diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..69a8b9e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,32 @@
+#Ignore List for Microchip's MPLAB X IDE
+#It's a form of NetBeans with vendor specific changes
+#Taken from zeha on GIST https://gist.github.com/zeha/5999375
+#Updated by Cristian Cristea (https://github.com/cristiancristea00)
+
+*.d
+*.pre
+*.p1
+*.lst
+*.sym
+*.obj
+*.o
+*.sdb
+*.obj.dmp
+*.mk
+*.map
+*.properties
+*.production
+*.debug
+html/
+nbproject/private/
+nbproject/Package-*.bash
+build/
+nbbuild/
+dist/
+nbdist/
+nbactions.xml
+nb-configuration.xml
+funclist
+nbproject/Makefile-*
+disassembly/
+.generated_files/
diff --git a/Analog to Digital Conversion/Makefile b/Analog to Digital Conversion/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/Analog to Digital Conversion/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/Analog to Digital Conversion/Proteus Simulation/adc.pdsprj b/Analog to Digital Conversion/Proteus Simulation/adc.pdsprj
new file mode 100644
index 0000000..cdd8140
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diff --git a/Analog to Digital Conversion/README.md b/Analog to Digital Conversion/README.md
new file mode 100644
index 0000000..ab5ea58
--- /dev/null
+++ b/Analog to Digital Conversion/README.md
@@ -0,0 +1,52 @@
+## ADC - Analog to Digital Conversion
+
+
+
+
+
+The Analog-to-Digital (A/D) Converter module has five inputs for the 28-pin devices and eight for the 40/44-pin devices. The conversion of an analog input signal results in a corresponding `10-bit` digital number. The A/D module has high and low-voltage `reference input` that is software selectable to some combination of VDD, VSS, RA2 or RA3. The A/D converter has a unique feature of being able to operate while the device is in Sleep mode. To operate in Sleep, the A/D clock must be derived from the A/D’s internal RC oscillator.
+
+**The A/D module has four registers. These registers are:**
+- A/D Result High Register `(ADRESH)`
+- A/D Result Low Register `(ADRESL)`
+- A/D Control Register 0 `(ADCON0)`
+- A/D Control Register 1 `(ADCON1)`
+
+**Steps in A/D Conversion**
+- Configure `ADCON0` register to set the clock frequency, set up channels and powering up the A/D module.
+```c
+ ADCON0bits.ADCS = 0b00; // set A/D conversion clock = fosc/2
+ ADCON0bits.CHS = 0b000; // set all adc channels off
+ ADCON0bits.ADON = 0; // a/d module is powered off
+```
+- Configure `ADCON1` to set the justification of 10bit output (Ouptut is stored in both `ADRESH` and `ADRESL`), clock frequency and data direction of analog input pins.
+```c
+ ADCON1bits.ADFM = 1; // set right justification for ADRESH
+ ADCON1bits.ADCS2 = 0; // set A/D conversion clock = fosc/2
+ ADCON1bits.PCFG = 0b0000; // set all pins as adc input
+```
+- Read analog input value
+```c
+ int __adc_read(int adc_channel) {
+ ADCON0bits.ADON = 1; // turn on a/d module
+ ADCON0bits.CHS = adc_channel; // turn on adc channel
+ __delay_ms(10); // wait for capacitors to charge up
+ ADCON0bits.GO = 1; // begin conversion
+ while(ADCON0bits.GO_DONE == 1) {
+ // wait for conversion to finish
+ }
+ int adc_value = (ADRESH << 8) + (ADRESL);
+ return adc_value;
+ }
+```
+
+### Circuit Diagram
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/Analog to Digital Conversion/adc.PNG b/Analog to Digital Conversion/adc.PNG
new file mode 100644
index 0000000..392fcba
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diff --git a/Analog to Digital Conversion/main.c b/Analog to Digital Conversion/main.c
new file mode 100644
index 0000000..a720206
--- /dev/null
+++ b/Analog to Digital Conversion/main.c
@@ -0,0 +1,103 @@
+/*
+ * Code: Analog to Digital Conversion
+ * Author: Atick Faisal
+ * License: GPL-3.0
+ * Created on March 18, 2019, 2:29 AM
+ */
+
+
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 16000000
+#define PRESCALAR 16
+#define ADC_PIN 1
+
+float PWM_FREQ;
+float PWM_PERIOD;
+int counter;
+
+void __init_adc() {
+ /*
+ * ADCON0 Register
+ * +---------------------------------------------------------------+
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * +---------------------------------------------------------------+
+ * | ADCS | CSH |GO/DONE| - | ADON |
+ * +---------------------------------------------------------------+
+ */
+
+ ADCON0bits.ADCS = 0b00; // set A/D conversion clock = fosc/2
+ ADCON0bits.CHS = 0b000; // set all adc channels off
+ ADCON0bits.ADON = 0; // a/d module is powered off
+
+ /*
+ * ADCON1 Register
+ * +---------------------------------------------------------------+
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * +---------------------------------------------------------------+
+ * | ADFM | ADCS2 | - | - | PCFG |
+ * +---------------------------------------------------------------+
+ */
+
+ ADCON1bits.ADFM = 1; // set right justification for ADRESH
+ ADCON1bits.ADCS2 = 0; // set A/D conversion clock = fosc/2
+ ADCON1bits.PCFG = 0b0000; // set all pins as adc input
+}
+
+int __adc_read(int adc_channel) {
+ ADCON0bits.ADON = 1; // turn on a/d module
+ ADCON0bits.CHS = (unsigned char) adc_channel; // turn on adc channel
+ __delay_ms(10); // wait for capacitors to charge up
+ ADCON0bits.GO = 1; // begin conversion
+ while (ADCON0bits.GO_DONE == 1) {
+ // wait for conversion to finish
+ }
+ int adc_value = (ADRESH << 8) + (ADRESL);
+ return adc_value;
+}
+
+///////////////////////////// PWM Configuration ////////////////////////////////
+
+void __set_pwm_freq(int f) {
+ PWM_FREQ = f;
+ PWM_PERIOD = 1 / PWM_FREQ;
+ int PR2_value = (int) ((PWM_PERIOD * _XTAL_FREQ) / (4 * PRESCALAR) - 1);
+ PR2 = (uint8_t) PR2_value;
+
+}
+
+void __init_pwm() {
+ TRISCbits.TRISC2 = 0; // set RC2 as output
+ T2CONbits.TMR2ON = 1; // set timer 2 on
+ T2CONbits.T2CKPS = 0b10; // set pre scalar of 16
+ CCP1CONbits.CCP1M = 0b1100; // set PWM mode of operation
+}
+
+void __set_duty_cycle(int duty_cycle) {
+ float dc = (float) duty_cycle / 100;
+ float dc_period = dc * PWM_PERIOD;
+ uint8_t reg_value = (uint8_t) ((dc_period * _XTAL_FREQ) / PRESCALAR);
+ /*
+ * PWM has 10 bit resolution
+ * 8 bits of MSB is stored in CCPR1L
+ * 2 bits of LSB is stored in CCP1CON(5:4)
+ */
+ CCPR1L = reg_value >> 2;
+ CCP1CONbits.CCP1X = (reg_value & 0b00000001);
+ CCP1CONbits.CCP1Y = (reg_value & 0b00000010);
+}
+////////////////////////////////////////////////////////////////////////////////
+
+void main(void) {
+ __set_pwm_freq(2000);
+ __init_pwm();
+ __set_duty_cycle(0);
+
+ __init_adc();
+
+ while (1) {
+ float adc_value = (float) __adc_read(ADC_PIN);
+ int pwm_value = (int) (adc_value * 100) / 1023; // scale value between 0 to 100
+ __set_duty_cycle(pwm_value);
+ }
+}
diff --git a/Analog to Digital Conversion/nbproject/Package-default.bash b/Analog to Digital Conversion/nbproject/Package-default.bash
new file mode 100644
index 0000000..f6c84c9
--- /dev/null
+++ b/Analog to Digital Conversion/nbproject/Package-default.bash
@@ -0,0 +1,73 @@
+#!/bin/bash -x
+
+#
+# Generated - do not edit!
+#
+
+# Macros
+TOP=`pwd`
+CND_CONF=default
+CND_DISTDIR=dist
+TMPDIR=build/${CND_CONF}/${IMAGE_TYPE}/tmp-packaging
+TMPDIRNAME=tmp-packaging
+OUTPUT_PATH=dist/${CND_CONF}/${IMAGE_TYPE}/ADC.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+OUTPUT_BASENAME=ADC.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+PACKAGE_TOP_DIR=adc.x/
+
+# Functions
+function checkReturnCode
+{
+ rc=$?
+ if [ $rc != 0 ]
+ then
+ exit $rc
+ fi
+}
+function makeDirectory
+# $1 directory path
+# $2 permission (optional)
+{
+ mkdir -p "$1"
+ checkReturnCode
+ if [ "$2" != "" ]
+ then
+ chmod $2 "$1"
+ checkReturnCode
+ fi
+}
+function copyFileToTmpDir
+# $1 from-file path
+# $2 to-file path
+# $3 permission
+{
+ cp "$1" "$2"
+ checkReturnCode
+ if [ "$3" != "" ]
+ then
+ chmod $3 "$2"
+ checkReturnCode
+ fi
+}
+
+# Setup
+cd "${TOP}"
+mkdir -p ${CND_DISTDIR}/${CND_CONF}/package
+rm -rf ${TMPDIR}
+mkdir -p ${TMPDIR}
+
+# Copy files and create directories and links
+cd "${TOP}"
+makeDirectory ${TMPDIR}/adc.x/bin
+copyFileToTmpDir "${OUTPUT_PATH}" "${TMPDIR}/${PACKAGE_TOP_DIR}bin/${OUTPUT_BASENAME}" 0755
+
+
+# Generate tar file
+cd "${TOP}"
+rm -f ${CND_DISTDIR}/${CND_CONF}/package/adc.x.tar
+cd ${TMPDIR}
+tar -vcf ../../../../${CND_DISTDIR}/${CND_CONF}/package/adc.x.tar *
+checkReturnCode
+
+# Cleanup
+cd "${TOP}"
+rm -rf ${TMPDIR}
diff --git a/Analog to Digital Conversion/nbproject/configurations.xml b/Analog to Digital Conversion/nbproject/configurations.xml
new file mode 100644
index 0000000..b7efcc2
--- /dev/null
+++ b/Analog to Digital Conversion/nbproject/configurations.xml
@@ -0,0 +1,165 @@
+
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+
+ XC8
+ 2.45
+ 2
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ false
+ false
+
+
+
+
+
+
+ false
+ false
+
+ false
+
+ false
+ false
+ false
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Analog to Digital Conversion/nbproject/private/configurations.xml b/Analog to Digital Conversion/nbproject/private/configurations.xml
new file mode 100644
index 0000000..2c1c4a6
--- /dev/null
+++ b/Analog to Digital Conversion/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/Analog to Digital Conversion/nbproject/private/private.xml b/Analog to Digital Conversion/nbproject/private/private.xml
new file mode 100644
index 0000000..9487430
--- /dev/null
+++ b/Analog to Digital Conversion/nbproject/private/private.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+ file:/home/ai/Embedded/PIC16F877a/Analog%20to%20Digital%20Conversion/main.c
+
+
+
diff --git a/Analog to Digital Conversion/nbproject/project.xml b/Analog to Digital Conversion/nbproject/project.xml
new file mode 100644
index 0000000..4c30519
--- /dev/null
+++ b/Analog to Digital Conversion/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ ADC
+ 0a3385fc-9132-48dd-9bc5-8dc94a82b230
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/Analog to Digital Conversion/pic16f877a.h b/Analog to Digital Conversion/pic16f877a.h
new file mode 100644
index 0000000..1c4e8a7
--- /dev/null
+++ b/Analog to Digital Conversion/pic16f877a.h
@@ -0,0 +1,17 @@
+/*
+ * File: pic16f877a.h
+ * Author: Atick Faisal
+ * License: GPL-3.0
+ * Created on March 18, 2019, 2:28 AM
+ */
+
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+#include
diff --git a/Datasheet/MPLAB_X_IDE_Users_Guide.pdf b/Datasheet/MPLAB_X_IDE_Users_Guide.pdf
new file mode 100644
index 0000000..fda43e0
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diff --git a/Datasheet/pic16f877a.pdf b/Datasheet/pic16f877a.pdf
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index 0000000..1721746
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diff --git a/Datasheet/pickit.pdf b/Datasheet/pickit.pdf
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index 0000000..272efdd
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diff --git a/LCD Display/Makefile b/LCD Display/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/LCD Display/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/LCD Display/Proteus Simulation/pic_lcd_display.pdsprj b/LCD Display/Proteus Simulation/pic_lcd_display.pdsprj
new file mode 100644
index 0000000..99c1f29
Binary files /dev/null and b/LCD Display/Proteus Simulation/pic_lcd_display.pdsprj differ
diff --git a/LCD Display/README.md b/LCD Display/README.md
new file mode 100644
index 0000000..0d3f6e6
--- /dev/null
+++ b/LCD Display/README.md
@@ -0,0 +1,62 @@
+## LCD Display Control
+
+
+
+
+
+LCD (Liquid Crystal Display) screen is an electronic display module and find a wide range of applications. A `16x2` LCD display is very basic module and is very commonly used in various devices and circuits. These modules are preferred over seven segments and other multi segment LEDs. The reasons being: LCDs are economical; easily programmable; have no limitation of displaying special & even custom characters (unlike in seven segments), animations and so on.
+
+### 1. Initialize the Display
+- Turn on Display by writing 1 to `DB3`
+- Set display by writting 1 to `DB2`
+- Turn on cursor by setting `DB1` bit
+- Turn on blinking cursor by writting to `DB0`
+
+ ```c
+ DATA_PORT = 0b00001111;
+ ```
+
+### 2. Clear the display
+- Set the `DB0` bit to clear display
+
+ ```c
+ DATA_PORT = 0b00000001;
+ ```
+
+### 3. Writing character to the display
+- Set register select `RS` pin high
+- Put the character in data port
+
+ ```c
+ SETUP_PORT |= (1 << RS);
+ DATA_PORT = character_ascii_value;
+ ```
+
+### 4. Writting a String
+- Call `lcd_write_char` function looping through the string
+
+ ```c
+ void lcd_write(char data[]) {
+ int i;
+ for(i=0; i<(strlen(data)); i++) {
+ lcd_write_char(data[i]);
+ }
+ }
+ ```
+
+### 5. Writting any changes to display
+- Set `EN` pin
+- write values to `RS` or `DATA_PORT`
+- wait for a while
+- clear `EN` pin
+
+### Circuit Diagram
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/LCD Display/lcd.PNG b/LCD Display/lcd.PNG
new file mode 100644
index 0000000..1dc9884
Binary files /dev/null and b/LCD Display/lcd.PNG differ
diff --git a/LCD Display/lcd_datasheet.pdf b/LCD Display/lcd_datasheet.pdf
new file mode 100644
index 0000000..81ad817
Binary files /dev/null and b/LCD Display/lcd_datasheet.pdf differ
diff --git a/LCD Display/main.c b/LCD Display/main.c
new file mode 100644
index 0000000..e4c5511
--- /dev/null
+++ b/LCD Display/main.c
@@ -0,0 +1,90 @@
+/*
+ * File: main.c
+ * Author: Atick Faisal
+ * Project: LCD Display
+ * Created on February 13, 2019, 4:36 PM
+ */
+
+
+#include
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 16000000
+
+#define DATA_PORT PORTC
+#define SETUP_PORT PORTB
+#define EN 7 //enable pin
+#define RS 6 //register select pin
+#define WRITING_DELAY 1
+
+void setup() {
+ TRISB = 0x00;
+ TRISC = 0x00;
+}
+
+void __init_display() {
+ SETUP_PORT &= ~(1 << RS);
+ DATA_PORT = 0b00001111;
+ SETUP_PORT |= (1 << EN);
+ __delay_ms(WRITING_DELAY);
+ SETUP_PORT &= ~(1 << EN);
+ SETUP_PORT |= (1 << RS);
+}
+
+void clear_display() {
+ SETUP_PORT &= ~(1 << RS);
+ DATA_PORT = 0b00000001;
+ SETUP_PORT |= (1 << EN);
+ __delay_ms(WRITING_DELAY);
+ SETUP_PORT &= ~(1 << EN);
+ SETUP_PORT |= (1 << RS);
+}
+
+void lcd_write_char(char i) {
+ DATA_PORT = i;
+ SETUP_PORT |= (1 << EN);
+ __delay_ms(WRITING_DELAY);
+ SETUP_PORT &= ~(1 << EN);
+}
+
+void lcd_write(char data[]) {
+ int i;
+ for(i=0; i<(strlen(data)); i++) {
+ lcd_write_char(data[i]);
+ }
+}
+
+void home() {
+ SETUP_PORT &= ~(1 << RS);
+ DATA_PORT = 0b00000010;
+ SETUP_PORT |= (1 << EN);
+ __delay_ms(WRITING_DELAY);
+ SETUP_PORT &= ~(1 << EN);
+ SETUP_PORT |= (1 << RS);
+}
+
+void shift_cursor_right() {
+ SETUP_PORT &= ~(1 << RS);
+ DATA_PORT = 0b00010100;
+ SETUP_PORT |= (1 << EN);
+ __delay_ms(WRITING_DELAY);
+ SETUP_PORT &= ~(1 << EN);
+ SETUP_PORT |= (1 << RS);
+}
+
+void set_cursor(int horizontal_shift) {
+ home();
+ int count;
+ for(count=0; count
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+
+ XC8
+ 2.45
+ 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ false
+ false
+
+
+
+
+
+
+ false
+ false
+
+ false
+
+ false
+ false
+ false
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/LCD Display/nbproject/private/configurations.xml b/LCD Display/nbproject/private/configurations.xml
new file mode 100644
index 0000000..2c1c4a6
--- /dev/null
+++ b/LCD Display/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/LCD Display/nbproject/private/private.xml b/LCD Display/nbproject/private/private.xml
new file mode 100644
index 0000000..6807a2b
--- /dev/null
+++ b/LCD Display/nbproject/private/private.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/LCD Display/nbproject/project.xml b/LCD Display/nbproject/project.xml
new file mode 100644
index 0000000..16348c5
--- /dev/null
+++ b/LCD Display/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ LCD Display
+ a87f8c64-9bc4-4392-8087-0efcd56c560a
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/LCD Display/pic16f877a.h b/LCD Display/pic16f877a.h
new file mode 100644
index 0000000..8a05136
--- /dev/null
+++ b/LCD Display/pic16f877a.h
@@ -0,0 +1,21 @@
+/*
+ Atick Faisal, 2019
+ */
+// PIC16F877A Configuration Bit Settings
+
+// 'C' source line config statements
+
+// CONFIG
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+// #pragma config statements should precede project file includes.
+// Use project enums instead of #define for ON and OFF.
+
+#include
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
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+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
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+
+ To protect your rights, we need to prevent others from denying you
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+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received. You must make sure that they, too, receive
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+know their rights.
+
+ Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+ For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software. For both users' and
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+
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+ Nothing in this License shall be construed as excluding or limiting
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+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
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+ 14. Revised Versions of this License.
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+ 16. Limitation of Liability.
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+ 17. Interpretation of Sections 15 and 16.
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
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+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/PWM/Makefile b/PWM/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/PWM/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/PWM/Proteus Simulation/PIC16F877A_PWM.pdsprj b/PWM/Proteus Simulation/PIC16F877A_PWM.pdsprj
new file mode 100644
index 0000000..1dd7b81
Binary files /dev/null and b/PWM/Proteus Simulation/PIC16F877A_PWM.pdsprj differ
diff --git a/PWM/README.md b/PWM/README.md
new file mode 100644
index 0000000..5b5a584
--- /dev/null
+++ b/PWM/README.md
@@ -0,0 +1,94 @@
+## PWM - LED Brightness Control
+
+
+
+
+
+Pulse Width Modulation `(PWM)` is a digital signal which is most commonly used in control circuitry. This signal is set high (5v) and low (0v) in a predefined time and speed. The time during which the signal stays high is called the “on time” and the time during which the signal stays low is called the “off time”.
+
+**Duty Cycle of PWM**
+
+The percentage of time in which the PWM signal remains HIGH (on time) is called as duty cycle. If the signal is always ON it is in 100% duty cycle and if it is always off it is 0% duty cycle.
+
+ `Duty Cycle =Turn ON time/ (Turn ON time + Turn OFF time)`
+
+![](https://circuitdigest.com/sites/default/files/inlineimages/pulse-width-modulation-duty-cycle.gif)
+
+**Frequency of PWM**
+
+The frequency of a PWM signal determines how fast a PWM completes one period. One Period is complete ON and OFF of a PWM signal as shown in the above figure.
+
+### Setting Up PWM signal
+- PWM signals can be generated in our PIC Microcontroller by using the CCP (Compare Capture PWM) module. The resolution of our PWM signal is 10-bit, that is for a value of 0 there will be a duty cycle of 0% and for a value of 1024 (2^10) there be a duty cycle of 100%. There are two CCP modules in our PIC MCU (CCP1 And CCP2), this means we can generate two PWM signals on two different pins (pin 17 and 16) simultaneously, in our tutorial we are using CCP1 to generate PWM signals on pin 17.
+
+**1. Required Registers**
+
+- `CCP1CON` (CCP1 control Register)
+- `T2CON` (Timer 2 Control Register)
+- `PR2` (Timer 2 modules Period Register)
+- `CCPR1L` (CCP Register 1 Low)
+
+**2. Set up PWM2 module**
+
+- `T2CON` Register:
+
+ | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ |-------|-------|-------|-------|-------|-------|-------|-------|
+ | - |TOUTPS3|TOUTPS2|TOUTPS1|TOUTPS0|TMR2ON |T2CKPS1|T2CKPS0|
+
+```c
+ void __init_pwm() {
+ TRISCbits.TRISC2 = 0; // set RC2 as output
+ T2CONbits.TMR2ON = 1; // set timer 2 on
+ T2CONbits.T2CKPS = 0b10; // set pre scalar of 16
+ CCP1CONbits.CCP1M = 0b1100; // set PWM mode of operation
+ }
+```
+
+**3. Set PWM Period**
+
+- Set the PWM period by writing to the `PR2` register.
+
+- `PWM Period = [(PR2) + 1] • 4 • TOSC •(TMR2 Prescale Value)`
+
+```c
+ void __set_pwm_freq(int f) {
+ PWM_FREQ = f;
+ PWM_PERIOD = 1 / PWM_FREQ;
+ int PR2_value = ((PWM_PERIOD * _XTAL_FREQ) / (4 * PRESCALAR) - 1);
+ PR2 = PR2_value;
+
+ }
+```
+
+**4. Set Duty Cycle**
+
+- Set the PWM duty cycle by writing to the `CCPR1L` register and `CCP1CON<5:4>` bits.
+- `PWM Duty Cycle =(CCPR1L:CCP1CON<5:4>) •TOSC • (TMR2 Prescale Value)`
+
+```c
+ void __set_duty_cycle(int duty_cycle) {
+ float dc = (float) duty_cycle / 100;
+ float dc_period = dc * PWM_PERIOD;
+ int reg_value = (int) ((dc_period * _XTAL_FREQ) / PRESCALAR);
+ /*
+ * PWM has 10 bit resolution
+ * 8 bits of MSB is stored in CCPR1L
+ * 2 bits of LSB is stored in CCP1CON(5:4)
+ */
+ CCPR1L = reg_value >> 2;
+ CCP1CONbits.CCP1X = (reg_value & 0b00000001);
+ CCP1CONbits.CCP1Y = (reg_value & 0b00000010);
+ }
+```
+
+### Circuit Diagram
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/PWM/diagram.PNG b/PWM/diagram.PNG
new file mode 100644
index 0000000..85d7d73
Binary files /dev/null and b/PWM/diagram.PNG differ
diff --git a/PWM/main.c b/PWM/main.c
new file mode 100644
index 0000000..f475057
--- /dev/null
+++ b/PWM/main.c
@@ -0,0 +1,95 @@
+/*
+ * Code: PIC16F877A PWM control
+ * Author: Atick Faisal
+ * License: GPL-3.0
+ * Created on March 6, 2019, 6:55 PM
+ */
+
+
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 16000000
+#define PRESCALAR 16
+
+/*
+ The following steps should be taken when configuring
+ the CCP module for PWM operation:
+ 1. Set the PWM period by writing to the PR2 register.
+ 2. Set the PWM duty cycle by writing to the
+ CCPR1L register and CCP1CON<5:4> bits.
+ 3. Make the CCP1 pin an output by clearing the
+ TRISC<2> bit.
+ 4. Set the TMR2 pre scale value and enable Timer2
+ by writing to T2CON.
+ 5. Configure the CCP1 module for PWM operation.
+ */
+
+float PWM_FREQ;
+float PWM_PERIOD;
+int counter;
+
+void __set_pwm_freq(int f) {
+ PWM_FREQ = f;
+ PWM_PERIOD = 1 / PWM_FREQ;
+ int PR2_value = ((PWM_PERIOD * _XTAL_FREQ) / (4 * PRESCALAR) - 1);
+ PR2 = PR2_value;
+
+}
+
+/*
+ * T2CON Register
+ * +---------------------------------------------------------------+
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * +---------------------------------------------------------------+
+ * | - |TOUTPS3|TOUTPS2|TOUTPS1|TOUTPS0|TMR2ON |T2CKPS1|T2CKPS0|
+ * +---------------------------------------------------------------+
+ */
+
+void __init_pwm() {
+ TRISCbits.TRISC2 = 0; // set RC2 as output
+ T2CONbits.TMR2ON = 1; // set timer 2 on
+ T2CONbits.T2CKPS = 0b10; // set pre scalar of 16
+ CCP1CONbits.CCP1M = 0b1100; // set PWM mode of operation
+}
+
+/*
+ * CCP1CON Register
+ * +---------------------------------------------------------------+
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * +---------------------------------------------------------------+
+ * | - | - | CCP1X | CCP1Y |CCP1M3 |CCP1M2 |CCP1M1 |CCP1M0 |
+ * +---------------------------------------------------------------+
+ */
+
+void __set_duty_cycle(int duty_cycle) {
+ float dc = (float) duty_cycle / 100;
+ float dc_period = dc * PWM_PERIOD;
+ int reg_value = (int) ((dc_period * _XTAL_FREQ) / PRESCALAR);
+ /*
+ * PWM has 10 bit resolution
+ * 8 bits of MSB is stored in CCPR1L
+ * 2 bits of LSB is stored in CCP1CON(5:4)
+ */
+ CCPR1L = reg_value >> 2;
+ CCP1CONbits.CCP1X = (reg_value & 0b00000001);
+ CCP1CONbits.CCP1Y = (reg_value & 0b00000010);
+}
+
+void main(void) {
+ __set_pwm_freq(2000);
+ __init_pwm();
+ __set_duty_cycle(0);
+
+ // continuously increase and decrease LED Brightness
+
+ while(1) {
+ for(counter = 0; counter < 100; counter++) {
+ __set_duty_cycle(counter);
+ __delay_ms(10);
+ }
+ for(counter = 100; counter > 0; counter--) {
+ __set_duty_cycle(counter);
+ __delay_ms(10);
+ }
+ }
+}
diff --git a/PWM/nbproject/Package-default.bash b/PWM/nbproject/Package-default.bash
new file mode 100644
index 0000000..93b73d2
--- /dev/null
+++ b/PWM/nbproject/Package-default.bash
@@ -0,0 +1,73 @@
+#!/bin/bash -x
+
+#
+# Generated - do not edit!
+#
+
+# Macros
+TOP=`pwd`
+CND_CONF=default
+CND_DISTDIR=dist
+TMPDIR=build/${CND_CONF}/${IMAGE_TYPE}/tmp-packaging
+TMPDIRNAME=tmp-packaging
+OUTPUT_PATH=dist/${CND_CONF}/${IMAGE_TYPE}/PWM.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+OUTPUT_BASENAME=PWM.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+PACKAGE_TOP_DIR=pwm/
+
+# Functions
+function checkReturnCode
+{
+ rc=$?
+ if [ $rc != 0 ]
+ then
+ exit $rc
+ fi
+}
+function makeDirectory
+# $1 directory path
+# $2 permission (optional)
+{
+ mkdir -p "$1"
+ checkReturnCode
+ if [ "$2" != "" ]
+ then
+ chmod $2 "$1"
+ checkReturnCode
+ fi
+}
+function copyFileToTmpDir
+# $1 from-file path
+# $2 to-file path
+# $3 permission
+{
+ cp "$1" "$2"
+ checkReturnCode
+ if [ "$3" != "" ]
+ then
+ chmod $3 "$2"
+ checkReturnCode
+ fi
+}
+
+# Setup
+cd "${TOP}"
+mkdir -p ${CND_DISTDIR}/${CND_CONF}/package
+rm -rf ${TMPDIR}
+mkdir -p ${TMPDIR}
+
+# Copy files and create directories and links
+cd "${TOP}"
+makeDirectory ${TMPDIR}/pwm/bin
+copyFileToTmpDir "${OUTPUT_PATH}" "${TMPDIR}/${PACKAGE_TOP_DIR}bin/${OUTPUT_BASENAME}" 0755
+
+
+# Generate tar file
+cd "${TOP}"
+rm -f ${CND_DISTDIR}/${CND_CONF}/package/pwm.tar
+cd ${TMPDIR}
+tar -vcf ../../../../${CND_DISTDIR}/${CND_CONF}/package/pwm.tar *
+checkReturnCode
+
+# Cleanup
+cd "${TOP}"
+rm -rf ${TMPDIR}
diff --git a/PWM/nbproject/configurations.xml b/PWM/nbproject/configurations.xml
new file mode 100644
index 0000000..15b9620
--- /dev/null
+++ b/PWM/nbproject/configurations.xml
@@ -0,0 +1,161 @@
+
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+ Simulator
+ XC8
+ 2.45
+ 3
+
+
+
+
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+ false
+ false
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+ false
+ false
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+ false
+
+ false
+ false
+ false
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
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+
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+
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+
+
+
diff --git a/PWM/nbproject/private/configurations.xml b/PWM/nbproject/private/configurations.xml
new file mode 100644
index 0000000..2c1c4a6
--- /dev/null
+++ b/PWM/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/PWM/nbproject/private/private.xml b/PWM/nbproject/private/private.xml
new file mode 100644
index 0000000..140e677
--- /dev/null
+++ b/PWM/nbproject/private/private.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+ file:/home/andromeda/Documents/PIC/pic16f877a/PWM/main.c
+
+
+
diff --git a/PWM/nbproject/project.xml b/PWM/nbproject/project.xml
new file mode 100644
index 0000000..01287ef
--- /dev/null
+++ b/PWM/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ PWM
+ 25261f61-aa7e-4dd5-8406-506b1bc9ca75
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/PWM/pic16f877a.h b/PWM/pic16f877a.h
new file mode 100644
index 0000000..824b55e
--- /dev/null
+++ b/PWM/pic16f877a.h
@@ -0,0 +1,20 @@
+/*
+ * File: pic16f877a.h
+ * Author: Atick Faisal
+ *
+ * Created on March 6, 2019, 6:56 PM
+ */
+
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+
+#include
+
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..412dfcd
--- /dev/null
+++ b/README.md
@@ -0,0 +1,45 @@
+# PIC16F877a
+## PIC16f877a basics with MPLAB X IDE and XC8 compiler
+[![Open Source Love](https://badges.frapsoft.com/os/v2/open-source.svg?v=103)](https://github.com/ellerbrock/open-source-badges/) [![GPL Licence](https://badges.frapsoft.com/os/gpl/gpl.svg?v=103)](https://opensource.org/licenses/GPL-3.0/) [![Maintenance](https://img.shields.io/badge/Maintained%3F-yes-green.svg)](https://GitHub.com/Naereen/StrapDown.js/graphs/commit-activity)
+### 1. Contents:
+- **[Timer Interrupt](https://github.com/atick-faisal/PIC16F877a/tree/master/Timer)**
+- **[Pulse Width Modulation](https://github.com/atick-faisal/PIC16F877a/tree/master/PWM)**
+- **[Analog to Digital Conversion](https://github.com/atick-faisal/PIC16F877a/tree/master/Analog%20to%20Digital%20Conversion)**
+- **[Serial Communication](https://github.com/atick-faisal/PIC16F877a/tree/master/Serial%20Communication%20(USART))**
+- **[Seven Segment Display Control](https://github.com/atick-faisal/PIC16F877a/tree/master/Seven%20Segment%20Display)**
+- **[LCD Display Control](https://github.com/atick-faisal/PIC16F877a/tree/master/LCD%20Display)**
+- **[Stepper Motor Control](https://github.com/atick-faisal/PIC16F877a/tree/master/Stepper%20Motor)**
+
+### 2. Required Softwares
+- **[Download](https://www.microchip.com/mplab/mplab-x-ide) and Install Mplab X IDE**
+- **[Download](https://www.microchip.com/mplab/compilers) and Install XC8 compiler**
+- **[Download](https://www.labcenter.com/downloads/) and Install Proteus Design Suite**
+
+### 3. How to Use
+- All the codes are written based on the pic16f877a **Datasheet**. The datasheeet provided [here](https://github.com/atick-faisal/PIC16F877a/blob/master/Datasheet/pic16f877a.pdf) contains all the necessary registers and bits descriptions. The `Datasheet` folder also contains user manual for Mplab X IDE and Pickit3.
+- **Source codes** are written in `main.c` file inside the `Project Directory`
+- **Simulation Files** can be found inside `Proteus Simulation` directory under `Project Directory`
+### 4. Running a project:
+- Open the project in `MPLAB X` IDE
+- Open `main.c` file inside `source`
+- Click on the `build` icon on the top
+- A `.hex` file is generated inside `Project Folder > dist > default > production > filename.hex`
+- Open the Simulation file (with a `.pdsprj` extension) in `Proteus`
+- Double Click on the mcu to bring out the configuration menu
+- Browse and select the `.hex` file and click Ok
+- Click on the run button at the bottom to simulate
+
+### 5. PIC16F877A Pinout Diagram
+PIC16F877a is a powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip's powerful PIC® architecture into an 40- or 44-pin package and is upwards compatible with the PIC16C5X, PIC12CXXX and PIC16C7X devices. The PIC16F877A features 256 bytes of `EEPROM` data memory, self programming, an `ICD`, 2 `Comparators`, 8 channels of 10-bit `Analog-to-Digital (A/D) converter`, 2 `capture/compare/PWM` functions, the synchronous `serial port`, Asynchronous Receiver Transmitter `(USART)`. All of these features make it ideal for more advanced level A/D applications in automotive, industrial, appliances and consumer applications.
+
+![](https://www.researchgate.net/profile/Paulo_Blikstein2/publication/288872085/figure/fig10/AS:614303967236126@1523472887787/A-very-popular-microcontroller-PIC-16F877A-and-its-pinout-diagram.png)
+
+### 6. Pickit3 Connections
+Microchip’s PICkit™ 3 In-Circuit Debugger/Programmer uses in-circuit debugging logic incorporated into each chip with Flash memory to provide a low-cost hardware debugger and programmer.
+
+![](https://mvdlande.files.wordpress.com/2016/02/pickit3-pickit3-5-connection-diagram.png)
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/Serial Communication (USART)/Makefile b/Serial Communication (USART)/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/Serial Communication (USART)/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/Serial Communication (USART)/Proteus Simulation/usart.pdsprj b/Serial Communication (USART)/Proteus Simulation/usart.pdsprj
new file mode 100644
index 0000000..562b9f5
Binary files /dev/null and b/Serial Communication (USART)/Proteus Simulation/usart.pdsprj differ
diff --git a/Serial Communication (USART)/README.md b/Serial Communication (USART)/README.md
new file mode 100644
index 0000000..80f6ba6
--- /dev/null
+++ b/Serial Communication (USART)/README.md
@@ -0,0 +1,94 @@
+## USART - Serial Communication
+
+
+
+
+
+The Universal Synchronous Asynchronous Receiver Transmitter `(USART)` module is one of the two serial I/O modules. (USART is also known as a Serial Communications Interface or `SCI`.) The USART can be configured as a full-duplex asynchronous system that can communicate with peripheral devices, such as CRT terminals and personal computers, or it can be configured as a half-duplex synchronous system that can communicate with peripheral devices, such as A/D or D/A integrated circuits, serial EEPROMs, etc.
+
+The USART can be configured in the following modes:
+- Asynchronous (full-duplex)
+- Synchronous – Master (half-duplex)
+- Synchronous – Slave (half-duplex)
+
+### Setting Up USART
+**1. Associated Registers**
+- `TXSTA` Register:
+
+ | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ |-------|-------|-------|-------|-------|-------|-------|-------|
+ | CSRC | TX9 | TXEN | SYNC | - | BRGH | TRMT | TX9D |
+
+- `RCSTA` Register:
+
+ | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ |-------|-------|-------|-------|-------|-------|-------|-------|
+ | SPEN | RX9 | SREN | CREN | ADDEN | FERR | OERR | RX9D |
+
+**2. Configure `USART` module**
+
+- Set up `TXSTA` register
+
+ ```c
+ TXSTAbits.TX9 = 0; // set 8 bit transmission
+ TXSTAbits.TXEN = 1; // enable data transmit
+ TXSTAbits.SYNC = 0; // select asynchronous mode
+ TXSTAbits.BRGH = 1; // set high baud rate
+ ```
+
+- Set up `RCSTA` register
+
+ ```c
+ RCSTAbits.SPEN = 1; // enable serial ports
+ RCSTAbits.RX9 = 0; // select 8 bit reception
+ RCSTAbits.CREN = 1; // enable continuous receive
+ ```
+
+#### 3. Set the `BAUD RATE` of communication:
+
+- `Baud Rate = FOSC/(16 (SPBRG + 1))`
+
+ ```c
+ void __set_baud_rate(int baud_rate) {
+ SPBRG = ((_XTAL_FREQ / 16) / baud_rate) - 1;
+ }
+ ```
+
+#### 4. Writing a character
+
+- Wait for the previous transmission to complete. When it is completed the `TXIF` bit is set.
+- Write the character in `TXREG`
+
+ ```c
+ void __write_char(char c) {
+ while(!TXIF) {
+ // wait until byte is sent
+ }
+ TXREG = c; // transmit a bit
+ }
+ ```
+
+#### 5. Writting a String
+
+- Call the `__write_char(c)` function everytime looping through the string.
+
+ ```c
+ void __usart_write_ln(char data[]) {
+ int i;
+ for(i=0; i<(strlen(data)); i++) {
+ __write_char(data[i]);
+ }
+ __write_char('\r');
+ }
+ ```
+
+### Circuit Diagram
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/Serial Communication (USART)/main.c b/Serial Communication (USART)/main.c
new file mode 100644
index 0000000..0195972
--- /dev/null
+++ b/Serial Communication (USART)/main.c
@@ -0,0 +1,102 @@
+/*
+ * Code: Serial Communication
+ * Author: Atick Faisal
+ * License : GPL-3.0
+ * Created on March 18, 2019, 4:28 AM
+ */
+
+#include
+#include
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 16000000
+#define BAUD_RATE 9600
+#define ADC_PIN 1
+
+char buffer[50];
+
+void __init_usart() {
+ /*
+ * TXSTA Register
+ * +---------------------------------------------------------------+
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * +---------------------------------------------------------------+
+ * | CSRC | TX9 | TXEN | SYNC | - | BRGH | TRMT | TX9D |
+ * +---------------------------------------------------------------+
+ */
+
+ TXSTAbits.TX9 = 0; // set 8 bit transmission
+ TXSTAbits.TXEN = 1; // enable data transmit
+ TXSTAbits.SYNC = 0; // select asynchronous mode
+ TXSTAbits.BRGH = 1; // set high baud rate
+
+ /*
+ * RCSTA Register
+ * +---------------------------------------------------------------+
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * +---------------------------------------------------------------+
+ * | SPEN | RX9 | SREN | CREN | ADDEN | FERR | OERR | RX9D |
+ * +---------------------------------------------------------------+
+ */
+
+ RCSTAbits.SPEN = 1; // enable serial ports
+ RCSTAbits.RX9 = 0; // select 8 bit reception
+ RCSTAbits.CREN = 1; // enable continuous receive
+}
+
+void __set_baud_rate(int baud_rate) {
+ /*
+ * Baud Rate = FOSC/(16 (SPBRG + 1))
+ */
+ SPBRG = ((_XTAL_FREQ / 16) / baud_rate) - 1;
+}
+
+void __write_char(char c) {
+ while(!TXIF) {
+ // wait until byte is sent
+ }
+ TXREG = c; // transmit a bit
+}
+
+void __usart_write_ln(char data[]) {
+ int i;
+ for(i=0; i<(strlen(data)); i++) {
+ __write_char(data[i]);
+ }
+ __write_char('\r');
+}
+
+void __init_adc() {
+ ADCON0bits.ADCS = 0b00; // set A/D conversion clock = fosc/2
+ ADCON0bits.CHS = 0b000; // set all adc channels off
+ ADCON0bits.ADON = 0; // a/d module is powered off
+
+ ADCON1bits.ADFM = 1; // set right justification for ADRESH
+ ADCON1bits.ADCS2 = 0; // set A/D conversion clock = fosc/2
+ ADCON1bits.PCFG = 0b0000; // set all pins as adc input
+}
+
+int __adc_read(int adc_channel) {
+ ADCON0bits.ADON = 1; // turn on a/d module
+ ADCON0bits.CHS = adc_channel; // turn on adc channel
+ __delay_ms(10); // wait for capacitors to charge up
+ ADCON0bits.GO = 1; // begin conversion
+ while(ADCON0bits.GO_DONE == 1) {
+ // wait for conversion to finish
+ }
+ int adc_value = (ADRESH << 8) + (ADRESL);
+ return adc_value;
+}
+
+void main(void) {
+ __init_adc();
+ __init_usart();
+ __set_baud_rate(BAUD_RATE);
+
+ while(1) {
+ int adc_value = __adc_read(ADC_PIN);
+ sprintf(buffer, "Sensor Value = %d", adc_value);
+ __usart_write_ln(buffer);
+ __delay_ms(1000);
+ }
+}
diff --git a/Serial Communication (USART)/nbproject/Package-default.bash b/Serial Communication (USART)/nbproject/Package-default.bash
new file mode 100644
index 0000000..0dcc141
--- /dev/null
+++ b/Serial Communication (USART)/nbproject/Package-default.bash
@@ -0,0 +1,73 @@
+#!/bin/bash -x
+
+#
+# Generated - do not edit!
+#
+
+# Macros
+TOP=`pwd`
+CND_CONF=default
+CND_DISTDIR=dist
+TMPDIR=build/${CND_CONF}/${IMAGE_TYPE}/tmp-packaging
+TMPDIRNAME=tmp-packaging
+OUTPUT_PATH=dist/${CND_CONF}/${IMAGE_TYPE}/USART.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+OUTPUT_BASENAME=USART.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+PACKAGE_TOP_DIR=usart.x/
+
+# Functions
+function checkReturnCode
+{
+ rc=$?
+ if [ $rc != 0 ]
+ then
+ exit $rc
+ fi
+}
+function makeDirectory
+# $1 directory path
+# $2 permission (optional)
+{
+ mkdir -p "$1"
+ checkReturnCode
+ if [ "$2" != "" ]
+ then
+ chmod $2 "$1"
+ checkReturnCode
+ fi
+}
+function copyFileToTmpDir
+# $1 from-file path
+# $2 to-file path
+# $3 permission
+{
+ cp "$1" "$2"
+ checkReturnCode
+ if [ "$3" != "" ]
+ then
+ chmod $3 "$2"
+ checkReturnCode
+ fi
+}
+
+# Setup
+cd "${TOP}"
+mkdir -p ${CND_DISTDIR}/${CND_CONF}/package
+rm -rf ${TMPDIR}
+mkdir -p ${TMPDIR}
+
+# Copy files and create directories and links
+cd "${TOP}"
+makeDirectory ${TMPDIR}/usart.x/bin
+copyFileToTmpDir "${OUTPUT_PATH}" "${TMPDIR}/${PACKAGE_TOP_DIR}bin/${OUTPUT_BASENAME}" 0755
+
+
+# Generate tar file
+cd "${TOP}"
+rm -f ${CND_DISTDIR}/${CND_CONF}/package/usart.x.tar
+cd ${TMPDIR}
+tar -vcf ../../../../${CND_DISTDIR}/${CND_CONF}/package/usart.x.tar *
+checkReturnCode
+
+# Cleanup
+cd "${TOP}"
+rm -rf ${TMPDIR}
diff --git a/Serial Communication (USART)/nbproject/configurations.xml b/Serial Communication (USART)/nbproject/configurations.xml
new file mode 100644
index 0000000..88a2466
--- /dev/null
+++ b/Serial Communication (USART)/nbproject/configurations.xml
@@ -0,0 +1,161 @@
+
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+
+ XC8
+ 2.45
+ 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ false
+ false
+
+
+
+
+
+
+ false
+ false
+
+ false
+
+ false
+ false
+ false
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Serial Communication (USART)/nbproject/private/configurations.xml b/Serial Communication (USART)/nbproject/private/configurations.xml
new file mode 100644
index 0000000..2c1c4a6
--- /dev/null
+++ b/Serial Communication (USART)/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/Serial Communication (USART)/nbproject/private/private.xml b/Serial Communication (USART)/nbproject/private/private.xml
new file mode 100644
index 0000000..add19bf
--- /dev/null
+++ b/Serial Communication (USART)/nbproject/private/private.xml
@@ -0,0 +1,10 @@
+
+
+
+
+
+ file:/C:/Users/atick/MPLABXProjects/USART.X/pic16f877a.h
+ file:/C:/Users/atick/MPLABXProjects/USART.X/main.c
+
+
+
diff --git a/Serial Communication (USART)/nbproject/project.xml b/Serial Communication (USART)/nbproject/project.xml
new file mode 100644
index 0000000..8826f38
--- /dev/null
+++ b/Serial Communication (USART)/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ USART
+ 5e1021cf-e24f-4bfc-9dcc-0ee1462b429d
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/Serial Communication (USART)/pic16f877a.h b/Serial Communication (USART)/pic16f877a.h
new file mode 100644
index 0000000..1c4e8a7
--- /dev/null
+++ b/Serial Communication (USART)/pic16f877a.h
@@ -0,0 +1,17 @@
+/*
+ * File: pic16f877a.h
+ * Author: Atick Faisal
+ * License: GPL-3.0
+ * Created on March 18, 2019, 2:28 AM
+ */
+
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+#include
diff --git a/Serial Communication (USART)/usart.PNG b/Serial Communication (USART)/usart.PNG
new file mode 100644
index 0000000..5c392fc
Binary files /dev/null and b/Serial Communication (USART)/usart.PNG differ
diff --git a/Seven Segment Display/4511_bcd_decoder.pdf b/Seven Segment Display/4511_bcd_decoder.pdf
new file mode 100644
index 0000000..41e6657
Binary files /dev/null and b/Seven Segment Display/4511_bcd_decoder.pdf differ
diff --git a/Seven Segment Display/Makefile b/Seven Segment Display/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/Seven Segment Display/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/Seven Segment Display/Proteus Simulation/Seven Segment Display.pdsprj b/Seven Segment Display/Proteus Simulation/Seven Segment Display.pdsprj
new file mode 100644
index 0000000..b42c7a8
Binary files /dev/null and b/Seven Segment Display/Proteus Simulation/Seven Segment Display.pdsprj differ
diff --git a/Seven Segment Display/Proteus Simulation/Seven Segment Display.pdsprj.DESKTOP-JEVVEC1.atick.workspace b/Seven Segment Display/Proteus Simulation/Seven Segment Display.pdsprj.DESKTOP-JEVVEC1.atick.workspace
new file mode 100644
index 0000000..0bde40b
--- /dev/null
+++ b/Seven Segment Display/Proteus Simulation/Seven Segment Display.pdsprj.DESKTOP-JEVVEC1.atick.workspace
@@ -0,0 +1,10 @@
+
+
+
+ 2c0000000200000003000000ffffffffffffffffffffffffffffffff7b00000009000000db040000d9020000
+
+
+
+
+
+
diff --git a/Seven Segment Display/README.md b/Seven Segment Display/README.md
new file mode 100644
index 0000000..7ad515d
--- /dev/null
+++ b/Seven Segment Display/README.md
@@ -0,0 +1,41 @@
+## Seven Segment Display
+
+
+
+
+
+### BCD to Sven Segment Decoder
+
+
+
+
+
+### Truth Table
+
+
+
+
+
+### Writing to the Decoder
+- Loop through `0-9` and write the binary value to the `PORT`
+
+ ```c
+ void display() {
+ int i;
+ for(i=0; i<10; i++) {
+ PORTC = i;
+ __delay_ms(1000);
+ }
+ }
+ ```
+
+### Circuit Diagram
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/Seven Segment Display/main.c b/Seven Segment Display/main.c
new file mode 100644
index 0000000..e7c0ab3
--- /dev/null
+++ b/Seven Segment Display/main.c
@@ -0,0 +1,29 @@
+/*
+* Code: Seven Segment Display Control
+* Author: Atick Faisal
+* License: GPL-3.0
+*/
+
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 16000000
+
+void _init() {
+ TRISC = 0x00;
+ PORTC = 0x00;
+}
+
+void display() {
+ int i;
+ for(i=0; i<10; i++) {
+ PORTC = i;
+ __delay_ms(1000);
+ }
+}
+
+void main(void) {
+ _init();
+ while(1) {
+ display();
+ }
+}
diff --git a/Seven Segment Display/nbproject/Package-default.bash b/Seven Segment Display/nbproject/Package-default.bash
new file mode 100644
index 0000000..1582650
--- /dev/null
+++ b/Seven Segment Display/nbproject/Package-default.bash
@@ -0,0 +1,73 @@
+#!/bin/bash -x
+
+#
+# Generated - do not edit!
+#
+
+# Macros
+TOP=`pwd`
+CND_CONF=default
+CND_DISTDIR=dist
+TMPDIR=build/${CND_CONF}/${IMAGE_TYPE}/tmp-packaging
+TMPDIRNAME=tmp-packaging
+OUTPUT_PATH=dist/${CND_CONF}/${IMAGE_TYPE}/Seven_Segment_Display.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+OUTPUT_BASENAME=Seven_Segment_Display.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+PACKAGE_TOP_DIR=sevensegmentdisplay.x/
+
+# Functions
+function checkReturnCode
+{
+ rc=$?
+ if [ $rc != 0 ]
+ then
+ exit $rc
+ fi
+}
+function makeDirectory
+# $1 directory path
+# $2 permission (optional)
+{
+ mkdir -p "$1"
+ checkReturnCode
+ if [ "$2" != "" ]
+ then
+ chmod $2 "$1"
+ checkReturnCode
+ fi
+}
+function copyFileToTmpDir
+# $1 from-file path
+# $2 to-file path
+# $3 permission
+{
+ cp "$1" "$2"
+ checkReturnCode
+ if [ "$3" != "" ]
+ then
+ chmod $3 "$2"
+ checkReturnCode
+ fi
+}
+
+# Setup
+cd "${TOP}"
+mkdir -p ${CND_DISTDIR}/${CND_CONF}/package
+rm -rf ${TMPDIR}
+mkdir -p ${TMPDIR}
+
+# Copy files and create directories and links
+cd "${TOP}"
+makeDirectory ${TMPDIR}/sevensegmentdisplay.x/bin
+copyFileToTmpDir "${OUTPUT_PATH}" "${TMPDIR}/${PACKAGE_TOP_DIR}bin/${OUTPUT_BASENAME}" 0755
+
+
+# Generate tar file
+cd "${TOP}"
+rm -f ${CND_DISTDIR}/${CND_CONF}/package/sevensegmentdisplay.x.tar
+cd ${TMPDIR}
+tar -vcf ../../../../${CND_DISTDIR}/${CND_CONF}/package/sevensegmentdisplay.x.tar *
+checkReturnCode
+
+# Cleanup
+cd "${TOP}"
+rm -rf ${TMPDIR}
diff --git a/Seven Segment Display/nbproject/configurations.xml b/Seven Segment Display/nbproject/configurations.xml
new file mode 100644
index 0000000..88a2466
--- /dev/null
+++ b/Seven Segment Display/nbproject/configurations.xml
@@ -0,0 +1,161 @@
+
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+
+ XC8
+ 2.45
+ 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ false
+ false
+
+
+
+
+
+
+ false
+ false
+
+ false
+
+ false
+ false
+ false
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Seven Segment Display/nbproject/private/configurations.xml b/Seven Segment Display/nbproject/private/configurations.xml
new file mode 100644
index 0000000..2c1c4a6
--- /dev/null
+++ b/Seven Segment Display/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/Seven Segment Display/nbproject/project.xml b/Seven Segment Display/nbproject/project.xml
new file mode 100644
index 0000000..190fdb8
--- /dev/null
+++ b/Seven Segment Display/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ Seven Segment Display
+ e11f8d13-5d28-4834-80ca-17c1b95604bb
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/Seven Segment Display/pic16f877a.h b/Seven Segment Display/pic16f877a.h
new file mode 100644
index 0000000..9a492b3
--- /dev/null
+++ b/Seven Segment Display/pic16f877a.h
@@ -0,0 +1,23 @@
+/*
+ Atick Faisal, 2019
+ */
+// PIC16F877A Configuration Bit Settings
+
+// 'C' source line config statements
+
+// CONFIG
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+// #pragma config statements should precede project file includes.
+// Use project enums instead of #define for ON and OFF.
+
+#include
+
+
diff --git a/Seven Segment Display/seven_segment.png b/Seven Segment Display/seven_segment.png
new file mode 100644
index 0000000..7432d8e
Binary files /dev/null and b/Seven Segment Display/seven_segment.png differ
diff --git a/Seven Segment Display/tutorial.pdf b/Seven Segment Display/tutorial.pdf
new file mode 100644
index 0000000..f15a758
Binary files /dev/null and b/Seven Segment Display/tutorial.pdf differ
diff --git a/Stepper Motor/Makefile b/Stepper Motor/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/Stepper Motor/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/Stepper Motor/Proteus Simulation/Stepper_Motor_control.pdsprj b/Stepper Motor/Proteus Simulation/Stepper_Motor_control.pdsprj
new file mode 100644
index 0000000..89b2074
Binary files /dev/null and b/Stepper Motor/Proteus Simulation/Stepper_Motor_control.pdsprj differ
diff --git a/Stepper Motor/README.md b/Stepper Motor/README.md
new file mode 100644
index 0000000..eb14897
--- /dev/null
+++ b/Stepper Motor/README.md
@@ -0,0 +1,57 @@
+## Stepper motor control
+
+
+
+
+
+Stepper motors vary from regular DC motors in that, rather than just spinning in one direction or another, they can spin in very precise increments.
+
+### Basic Operation
+
+
+
+
+### Bit Writting Sequence
+-
+ |A|B|C|D|Angle|
+ |-|-|-|-|-|
+ |0|0|0|1|0|
+ |0|0|1|1|45|
+ |0|0|1|0|90|
+ |0|1|1|0|135|
+ |0|1|0|0|180|
+ |1|1|0|0|225|
+ |1|0|0|0|270|
+ |1|0|0|1|315|
+
+- write values to connected `PORT`
+
+ ```c
+ void rotate_motor() {
+ PORTC = 0b00000001;
+ __delay_ms(40);
+ PORTC = 0b00000011;
+ __delay_ms(40);
+ PORTC = 0b00000010;
+ __delay_ms(40);
+ PORTC = 0b00000110;
+ __delay_ms(40);
+ PORTC = 0b00000100;
+ __delay_ms(40);
+ PORTC = 0b00001100;
+ __delay_ms(40);
+ PORTC = 0b00001000;
+ __delay_ms(40);
+ }
+ ```
+
+### Circuit Diagram
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/Stepper Motor/Stepper_Motor_control.png b/Stepper Motor/Stepper_Motor_control.png
new file mode 100644
index 0000000..64dbbd6
Binary files /dev/null and b/Stepper Motor/Stepper_Motor_control.png differ
diff --git a/Stepper Motor/main.c b/Stepper Motor/main.c
new file mode 100644
index 0000000..bc4bdcd
--- /dev/null
+++ b/Stepper Motor/main.c
@@ -0,0 +1,40 @@
+/*
+ * File: main.c
+ * Stepper Motor Control
+ * Author: Atick Faisal
+ *
+ * Created on February 12, 2019, 9:47 AM
+ */
+
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 16000000
+
+void _init() {
+ TRISC = 0x00;
+ PORTC = 0x00;
+}
+
+void rotate_motor() {
+ PORTC = 0b00000001;
+ __delay_ms(40);
+ PORTC = 0b00000011;
+ __delay_ms(40);
+ PORTC = 0b00000010;
+ __delay_ms(40);
+ PORTC = 0b00000110;
+ __delay_ms(40);
+ PORTC = 0b00000100;
+ __delay_ms(40);
+ PORTC = 0b00001100;
+ __delay_ms(40);
+ PORTC = 0b00001000;
+ __delay_ms(40);
+}
+
+void main(void) {
+ _init();
+ while(1) {
+ rotate_motor();
+ }
+}
diff --git a/Stepper Motor/nbproject/Package-default.bash b/Stepper Motor/nbproject/Package-default.bash
new file mode 100644
index 0000000..d3396a3
--- /dev/null
+++ b/Stepper Motor/nbproject/Package-default.bash
@@ -0,0 +1,73 @@
+#!/bin/bash -x
+
+#
+# Generated - do not edit!
+#
+
+# Macros
+TOP=`pwd`
+CND_CONF=default
+CND_DISTDIR=dist
+TMPDIR=build/${CND_CONF}/${IMAGE_TYPE}/tmp-packaging
+TMPDIRNAME=tmp-packaging
+OUTPUT_PATH=dist/${CND_CONF}/${IMAGE_TYPE}/Stepper_Motor.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+OUTPUT_BASENAME=Stepper_Motor.X.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+PACKAGE_TOP_DIR=steppermotor.x/
+
+# Functions
+function checkReturnCode
+{
+ rc=$?
+ if [ $rc != 0 ]
+ then
+ exit $rc
+ fi
+}
+function makeDirectory
+# $1 directory path
+# $2 permission (optional)
+{
+ mkdir -p "$1"
+ checkReturnCode
+ if [ "$2" != "" ]
+ then
+ chmod $2 "$1"
+ checkReturnCode
+ fi
+}
+function copyFileToTmpDir
+# $1 from-file path
+# $2 to-file path
+# $3 permission
+{
+ cp "$1" "$2"
+ checkReturnCode
+ if [ "$3" != "" ]
+ then
+ chmod $3 "$2"
+ checkReturnCode
+ fi
+}
+
+# Setup
+cd "${TOP}"
+mkdir -p ${CND_DISTDIR}/${CND_CONF}/package
+rm -rf ${TMPDIR}
+mkdir -p ${TMPDIR}
+
+# Copy files and create directories and links
+cd "${TOP}"
+makeDirectory ${TMPDIR}/steppermotor.x/bin
+copyFileToTmpDir "${OUTPUT_PATH}" "${TMPDIR}/${PACKAGE_TOP_DIR}bin/${OUTPUT_BASENAME}" 0755
+
+
+# Generate tar file
+cd "${TOP}"
+rm -f ${CND_DISTDIR}/${CND_CONF}/package/steppermotor.x.tar
+cd ${TMPDIR}
+tar -vcf ../../../../${CND_DISTDIR}/${CND_CONF}/package/steppermotor.x.tar *
+checkReturnCode
+
+# Cleanup
+cd "${TOP}"
+rm -rf ${TMPDIR}
diff --git a/Stepper Motor/nbproject/configurations.xml b/Stepper Motor/nbproject/configurations.xml
new file mode 100644
index 0000000..88a2466
--- /dev/null
+++ b/Stepper Motor/nbproject/configurations.xml
@@ -0,0 +1,161 @@
+
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+
+ XC8
+ 2.45
+ 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ false
+ false
+
+
+
+
+
+
+ false
+ false
+
+ false
+
+ false
+ false
+ false
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Stepper Motor/nbproject/private/configurations.xml b/Stepper Motor/nbproject/private/configurations.xml
new file mode 100644
index 0000000..2c1c4a6
--- /dev/null
+++ b/Stepper Motor/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/Stepper Motor/nbproject/private/private.xml b/Stepper Motor/nbproject/private/private.xml
new file mode 100644
index 0000000..8641e23
--- /dev/null
+++ b/Stepper Motor/nbproject/private/private.xml
@@ -0,0 +1,10 @@
+
+
+
+
+
+ file:/C:/Users/atick/MPLABXProjects/Stepper%20Motor.X/main.c
+ file:/C:/Users/atick/MPLABXProjects/Stepper%20Motor.X/pic16f877a.h
+
+
+
diff --git a/Stepper Motor/nbproject/project.xml b/Stepper Motor/nbproject/project.xml
new file mode 100644
index 0000000..52e5132
--- /dev/null
+++ b/Stepper Motor/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ Stepper Motor
+ 1183f567-7327-4af0-a1a0-77fba1869a85
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/Stepper Motor/pic16f877a.h b/Stepper Motor/pic16f877a.h
new file mode 100644
index 0000000..9a492b3
--- /dev/null
+++ b/Stepper Motor/pic16f877a.h
@@ -0,0 +1,23 @@
+/*
+ Atick Faisal, 2019
+ */
+// PIC16F877A Configuration Bit Settings
+
+// 'C' source line config statements
+
+// CONFIG
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+// #pragma config statements should precede project file includes.
+// Use project enums instead of #define for ON and OFF.
+
+#include
+
+
diff --git a/Timer/Makefile b/Timer/Makefile
new file mode 100644
index 0000000..fca8e2c
--- /dev/null
+++ b/Timer/Makefile
@@ -0,0 +1,113 @@
+#
+# There exist several targets which are by default empty and which can be
+# used for execution of your targets. These targets are usually executed
+# before and after some main targets. They are:
+#
+# .build-pre: called before 'build' target
+# .build-post: called after 'build' target
+# .clean-pre: called before 'clean' target
+# .clean-post: called after 'clean' target
+# .clobber-pre: called before 'clobber' target
+# .clobber-post: called after 'clobber' target
+# .all-pre: called before 'all' target
+# .all-post: called after 'all' target
+# .help-pre: called before 'help' target
+# .help-post: called after 'help' target
+#
+# Targets beginning with '.' are not intended to be called on their own.
+#
+# Main targets can be executed directly, and they are:
+#
+# build build a specific configuration
+# clean remove built files from a configuration
+# clobber remove all built files
+# all build all configurations
+# help print help mesage
+#
+# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
+# .help-impl are implemented in nbproject/makefile-impl.mk.
+#
+# Available make variables:
+#
+# CND_BASEDIR base directory for relative paths
+# CND_DISTDIR default top distribution directory (build artifacts)
+# CND_BUILDDIR default top build directory (object files, ...)
+# CONF name of current configuration
+# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
+# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
+# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
+# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
+# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
+# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
+#
+# NOCDDL
+
+
+# Environment
+MKDIR=mkdir
+CP=cp
+CCADMIN=CCadmin
+RANLIB=ranlib
+
+
+# build
+build: .build-post
+
+.build-pre:
+# Add your pre 'build' code here...
+
+.build-post: .build-impl
+# Add your post 'build' code here...
+
+
+# clean
+clean: .clean-post
+
+.clean-pre:
+# Add your pre 'clean' code here...
+# WARNING: the IDE does not call this target since it takes a long time to
+# simply run make. Instead, the IDE removes the configuration directories
+# under build and dist directly without calling make.
+# This target is left here so people can do a clean when running a clean
+# outside the IDE.
+
+.clean-post: .clean-impl
+# Add your post 'clean' code here...
+
+
+# clobber
+clobber: .clobber-post
+
+.clobber-pre:
+# Add your pre 'clobber' code here...
+
+.clobber-post: .clobber-impl
+# Add your post 'clobber' code here...
+
+
+# all
+all: .all-post
+
+.all-pre:
+# Add your pre 'all' code here...
+
+.all-post: .all-impl
+# Add your post 'all' code here...
+
+
+# help
+help: .help-post
+
+.help-pre:
+# Add your pre 'help' code here...
+
+.help-post: .help-impl
+# Add your post 'help' code here...
+
+
+
+# include project implementation makefile
+include nbproject/Makefile-impl.mk
+
+# include project make variables
+include nbproject/Makefile-variables.mk
diff --git a/Timer/README.md b/Timer/README.md
new file mode 100644
index 0000000..38d9963
--- /dev/null
+++ b/Timer/README.md
@@ -0,0 +1,79 @@
+## Creating 1Hz pulse using `PIC` internal timer interrupt
+
+
+
+
+
+pic16f877a has 3 timers. they are:
+- Timer0 (8 bit)
+- Timer1 (16 bit)
+- Timer2 (8bit)
+
+### 1. Setting Up Timer1 `OPTION_REG` register
+- Set `prescale` of 8
+
+ ```c
+ T1CKPS0 = 1;
+ T1CKPS1 = 1;
+ ```
+- Enable Timer1
+
+ ```c
+ TMR1ON = 1;
+ ```
+
+### 2. Set up the Interrupt `INTCON` register
+- Enable Global an Peripheral interrupt
+
+ ```c
+ GIE = 1; // enable global interrupt
+ PEIE = 1; // enable peripheral interrupt
+ ```
+
+- Enable Timer1 `overflow` interupt
+
+ ```c
+ TMR1IE = 1; // enable timer1 overflow interrupt
+ ```
+
+- Clear the `interrupt flag` initially
+
+ ```c
+ TMR1IF = 0; // clear timer1 overflow interrupt flag
+ ```
+
+### 3. Timer value calculation for the desired delay
+
+- `RegValue = 65536-((Delay * Fosc)/(Prescalar*4))`
+
+ ```c
+ TMR1H=0x9E; // Load the time value(0xBDC) for 100 milli delay
+ TMR1L=0x58;
+ ```
+
+### 4. Writing the Interrupt Service Routine `ISR`
+- Clear overflow interrupt flag
+- Reset timer value
+
+ ```c
+ void __interrupt() isr(void) {
+ if(TMR1IF==1) {
+ TMR1H=0x9E; // Load the time value(0xBDC) for 100 milli delay
+ TMR1L=0x58;
+ TMR1IF=0; // reset overflow flag
+ count++; // counter increments every 100 milli
+ }
+ return;
+ }
+ ```
+
+### Circuit Diagram:
+
+
+
+
+
+## License
+[![licensebuttons by-nc-sa](https://licensebuttons.net/l/by-nc-sa/3.0/88x31.png)](https://creativecommons.org/licenses/by-nc-sa/4.0)
+
+This work is licensed under [GNU General Public License v3.0](https://github.com/atick-faisal/PIC16F877a/blob/master/LICENSE).
diff --git a/Timer/main.c b/Timer/main.c
new file mode 100644
index 0000000..4ac9fcd
--- /dev/null
+++ b/Timer/main.c
@@ -0,0 +1,57 @@
+/*
+ * File: main.c
+ * Blink LED at 1Hz using timer interrupt
+ * Author: Atick Faisal
+ *
+ * Created on February 2, 2019, 9:47 AM
+ */
+
+
+#include "pic16f877a.h"
+
+#define _XTAL_FREQ 8000000
+#define LED_PIN 1
+
+char state = 0;
+int count = 0;
+
+void __init_interrupt__() {
+ // setup for INTCON register
+ GIE = 1; // enable global interrupt
+ PEIE = 1; // enable peripheral interrupt
+ // setup PIE1 register
+ TMR1IE = 1; // enable timer1 overflow interrupt
+ // setup PIR1 register
+ TMR1IF = 0; // clear timer1 overflow interrupt flag
+}
+
+void __init_timer__() {
+ // setup T1CON register
+ // set pre scale of 8
+ T1CKPS0 = 1;
+ T1CKPS1 = 1;
+ TMR1CS = 0; // select internal clock
+ TMR1ON = 1; // enable timer1
+}
+
+void __interrupt() isr(void) {
+ if(TMR1IF==1) {
+ TMR1H=0x9E; // Load the time value(0xBDC) for 100 milli delay
+ TMR1L=0x58;
+ TMR1IF=0; // reset overflow flag
+ count++; // counter increments every 100 milli
+ }
+ return;
+}
+
+void main(void) {
+ TRISC &= ~(1 << LED_PIN);
+ __init_interrupt__();
+ __init_timer__();
+ while(1) {
+ if(count == 5) { // every 500 milli
+ count = 0;
+ PORTC ^= (1 << LED_PIN); // alter LED state
+ }
+ }
+}
diff --git a/Timer/nbproject/Package-default.bash b/Timer/nbproject/Package-default.bash
new file mode 100644
index 0000000..afb2464
--- /dev/null
+++ b/Timer/nbproject/Package-default.bash
@@ -0,0 +1,73 @@
+#!/bin/bash -x
+
+#
+# Generated - do not edit!
+#
+
+# Macros
+TOP=`pwd`
+CND_CONF=default
+CND_DISTDIR=dist
+TMPDIR=build/${CND_CONF}/${IMAGE_TYPE}/tmp-packaging
+TMPDIRNAME=tmp-packaging
+OUTPUT_PATH=dist/${CND_CONF}/${IMAGE_TYPE}/Timer.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+OUTPUT_BASENAME=Timer.${IMAGE_TYPE}.${OUTPUT_SUFFIX}
+PACKAGE_TOP_DIR=timer/
+
+# Functions
+function checkReturnCode
+{
+ rc=$?
+ if [ $rc != 0 ]
+ then
+ exit $rc
+ fi
+}
+function makeDirectory
+# $1 directory path
+# $2 permission (optional)
+{
+ mkdir -p "$1"
+ checkReturnCode
+ if [ "$2" != "" ]
+ then
+ chmod $2 "$1"
+ checkReturnCode
+ fi
+}
+function copyFileToTmpDir
+# $1 from-file path
+# $2 to-file path
+# $3 permission
+{
+ cp "$1" "$2"
+ checkReturnCode
+ if [ "$3" != "" ]
+ then
+ chmod $3 "$2"
+ checkReturnCode
+ fi
+}
+
+# Setup
+cd "${TOP}"
+mkdir -p ${CND_DISTDIR}/${CND_CONF}/package
+rm -rf ${TMPDIR}
+mkdir -p ${TMPDIR}
+
+# Copy files and create directories and links
+cd "${TOP}"
+makeDirectory ${TMPDIR}/timer/bin
+copyFileToTmpDir "${OUTPUT_PATH}" "${TMPDIR}/${PACKAGE_TOP_DIR}bin/${OUTPUT_BASENAME}" 0755
+
+
+# Generate tar file
+cd "${TOP}"
+rm -f ${CND_DISTDIR}/${CND_CONF}/package/timer.tar
+cd ${TMPDIR}
+tar -vcf ../../../../${CND_DISTDIR}/${CND_CONF}/package/timer.tar *
+checkReturnCode
+
+# Cleanup
+cd "${TOP}"
+rm -rf ${TMPDIR}
diff --git a/Timer/nbproject/configurations.xml b/Timer/nbproject/configurations.xml
new file mode 100644
index 0000000..da0bc29
--- /dev/null
+++ b/Timer/nbproject/configurations.xml
@@ -0,0 +1,245 @@
+
+
+
+
+ pic16f877a.h
+
+
+
+
+ main.c
+
+
+ Makefile
+
+
+ Makefile
+
+
+
+ localhost
+ PIC16F877A
+
+
+ PICkit3PlatformTool
+ XC8
+ 2.45
+ 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ false
+ false
+
+
+
+
+
+
+ false
+ false
+
+ false
+
+ false
+ false
+ false
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Timer/nbproject/private/configurations.xml b/Timer/nbproject/private/configurations.xml
new file mode 100644
index 0000000..70ecbe9
--- /dev/null
+++ b/Timer/nbproject/private/configurations.xml
@@ -0,0 +1,25 @@
+
+
+ Makefile
+ 0
+
+
+ :=MPLABComm-USB-Microchip:=<vid>04D8:=<pid>900A:=<rev>0002:=<man>Microchip Technology Inc.:=<prod>PICkit 3:=<sn>BUR132284452:=<drv>x:=<xpt>h:=end
+ /opt/microchip/xc8/v2.45/bin
+
+ place holder 1
+ place holder 2
+
+
+
+
+ true
+ 0
+ 0
+ 0
+
+
+
+
+
+
diff --git a/Timer/nbproject/private/private.xml b/Timer/nbproject/private/private.xml
new file mode 100644
index 0000000..6807a2b
--- /dev/null
+++ b/Timer/nbproject/private/private.xml
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/Timer/nbproject/project.xml b/Timer/nbproject/project.xml
new file mode 100644
index 0000000..63cbc8c
--- /dev/null
+++ b/Timer/nbproject/project.xml
@@ -0,0 +1,27 @@
+
+
+ com.microchip.mplab.nbide.embedded.makeproject
+
+
+ timer_interrupt
+ e2bb0450-b143-4741-8b75-29abe6b71d57
+ 0
+ c
+
+ h
+
+ ISO-8859-1
+
+
+
+
+ default
+ 2
+
+
+
+ false
+
+
+
+
diff --git a/Timer/pic16f877a.h b/Timer/pic16f877a.h
new file mode 100644
index 0000000..9a492b3
--- /dev/null
+++ b/Timer/pic16f877a.h
@@ -0,0 +1,23 @@
+/*
+ Atick Faisal, 2019
+ */
+// PIC16F877A Configuration Bit Settings
+
+// 'C' source line config statements
+
+// CONFIG
+#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
+#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
+#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
+#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
+#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
+#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
+#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
+#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
+
+// #pragma config statements should precede project file includes.
+// Use project enums instead of #define for ON and OFF.
+
+#include
+
+
diff --git a/Timer/timer.PNG b/Timer/timer.PNG
new file mode 100644
index 0000000..41b699d
Binary files /dev/null and b/Timer/timer.PNG differ
diff --git a/pic_pinout.png b/pic_pinout.png
new file mode 100644
index 0000000..b291768
Binary files /dev/null and b/pic_pinout.png differ