Update ADC module.

update adc module ,add ads7830.

Code/C_Code/07.1.1_ADC/ADC.cpp

@@ -0,0 +1,39 @@
+/**********************************************************************
+* Filename    : ADC.cpp
+* Description : Use ADC module to read the voltage value of potentiometer.
+* Author      : www.freenove.com
+* modification: 2020/03/06
+**********************************************************************/
+#include <wiringPi.h>
+#include <stdio.h>
+#include <ADCDevice.hpp>
+
+ADCDevice *adc;  // Define an ADC Device class object
+
+int main(void){
+    adc = new ADCDevice();
+    printf("Program is starting ... \n");
+
+    if(adc->detectI2C(0x48)){    // Detect the pcf8591.
+        delete adc;                // Free previously pointed memory
+        adc = new PCF8591();    // If detected, create an instance of PCF8591.
+    }
+    else if(adc->detectI2C(0x4b)){// Detect the ads7830
+        delete adc;               // Free previously pointed memory
+        adc = new ADS7830();      // If detected, create an instance of ADS7830.
+    }
+    else{
+        printf("No correct I2C address found, \n"
+        "Please use command 'i2cdetect -y 1' to check the I2C address! \n"
+        "Program Exit. \n");
+        return -1;
+    }
+
+    while(1){
+        int adcValue = adc->analogRead(0);    //read analog value of A0 pin
+        float voltage = (float)adcValue / 255.0 * 3.3;  // Calculate voltage
+        printf("ADC value : %d  ,\tVoltage : %.2fV\n",adcValue,voltage);
+        delay(100);
+    }
+    return 0;
+}

Code/C_Code/08.1.1_Softlight/Softlight.cpp

@@ -0,0 +1,44 @@
+/**********************************************************************
+* Filename    : Softlight.cpp
+* Description : Use potentiometer to control LED
+* Author      : www.freenove.com
+* modification: 2020/03/07
+**********************************************************************/
+#include <wiringPi.h>
+#include <stdio.h>
+#include <softPwm.h>
+#include <ADCDevice.hpp>
+
+#define ledPin 0
+
+ADCDevice *adc;  // Define an ADC Device class object
+
+int main(void){
+    adc = new ADCDevice();
+    printf("Program is starting ... \n");
+
+    if(adc->detectI2C(0x48)){    // Detect the pcf8591.
+        delete adc;                // Free previously pointed memory
+        adc = new PCF8591();    // If detected, create an instance of PCF8591.
+    }
+    else if(adc->detectI2C(0x4b)){// Detect the ads7830
+        delete adc;               // Free previously pointed memory
+        adc = new ADS7830();      // If detected, create an instance of ADS7830.
+    }
+    else{
+        printf("No correct I2C address found, \n"
+        "Please use command 'i2cdetect -y 1' to check the I2C address! \n"
+        "Program Exit. \n");
+        return -1;
+    }
+    wiringPiSetup();
+    softPwmCreate(ledPin,0,100);
+    while(1){
+        int adcValue = adc->analogRead(0);    //read analog value of A0 pin
+        softPwmWrite(ledPin,adcValue*100/255);    // Mapping to PWM duty cycle
+        float voltage = (float)adcValue / 255.0 * 3.3;  // Calculate voltage
+        printf("ADC value : %d  ,\tVoltage : %.2fV\n",adcValue,voltage);
+        delay(30);
+    }
+    return 0;
+}

Code/C_Code/09.1.1_ColorfulSoftlight/ColorfulSoftlight.c → Code/C_Code/09.1.1_ColorfulSoftlight/ColorfulSoftlight.cpp

@@ -1,40 +1,46 @@
 /**********************************************************************
-* Filename    : ColorfulSoftlight.c
-* Description : Potentiometer control RGBLED
+* Filename    : Softlight.cpp
+* Description : Use potentiometer to control LED
 * Author      : www.freenove.com
-* modification: 2019/12/27
+* modification: 2020/03/07
 **********************************************************************/
 #include <wiringPi.h>
-#include <pcf8591.h>
 #include <stdio.h>
 #include <softPwm.h>
-
-#define address 0x48        //pcf8591 default address
-#define pinbase 64          //any number above 64
-#define A0 pinbase + 0
-#define A1 pinbase + 1
-#define A2 pinbase + 2
-#define A3 pinbase + 3
+#include <ADCDevice.hpp>
 
 #define ledRedPin 3         //define 3 pins for RGBLED
 #define ledGreenPin 2
 #define ledBluePin 0
+
+ADCDevice *adc;  // Define an ADC Device class object
+
 int main(void){
-    int val_Red,val_Green,val_Blue;
-
+    adc = new ADCDevice();
     printf("Program is starting ... \n");
-
+
+    if(adc->detectI2C(0x48)){    // Detect the pcf8591.
+        delete adc;                // Free previously pointed memory
+        adc = new PCF8591();    // If detected, create an instance of PCF8591.
+    }
+    else if(adc->detectI2C(0x4b)){// Detect the ads7830
+        delete adc;               // Free previously pointed memory
+        adc = new ADS7830();      // If detected, create an instance of ADS7830.
+    }
+    else{
+        printf("No correct I2C address found, \n"
+        "Please use command 'i2cdetect -y 1' to check the I2C address! \n"
+        "Program Exit. \n");
+        return -1;
+    }
     wiringPiSetup();
-
     softPwmCreate(ledRedPin,0,100);     //creat 3 PMW output pins for RGBLED
     softPwmCreate(ledGreenPin,0,100);
     softPwmCreate(ledBluePin,0,100);
-    pcf8591Setup(pinbase,address);      //initialize PCF8591
-
     while(1){
-        val_Red = analogRead(A0);  //read analog value of 3 potentiometers
-        val_Green = analogRead(A1);
-        val_Blue = analogRead(A2);
+        int val_Red = adc->analogRead(0);  //read analog value of 3 potentiometers
+        int val_Green = adc->analogRead(1);
+        int val_Blue = adc->analogRead(2);
         softPwmWrite(ledRedPin,val_Red*100/255);    //map the read value of potentiometers into PWM value and output it
         softPwmWrite(ledGreenPin,val_Green*100/255);
         softPwmWrite(ledBluePin,val_Blue*100/255);

Code/C_Code/10.1.1_Nightlamp/Nightlamp.cpp

@@ -0,0 +1,44 @@
+/**********************************************************************
+* Filename    : Nightlamp.cpp
+* Description : Photoresistor control LED
+* Author      : www.freenove.com
+* modification: 2020/03/09
+**********************************************************************/
+#include <wiringPi.h>
+#include <stdio.h>
+#include <softPwm.h>
+#include <ADCDevice.hpp>
+
+#define ledPin 0
+
+ADCDevice *adc;  // Define an ADC Device class object
+
+int main(void){
+    adc = new ADCDevice();
+    printf("Program is starting ... \n");
+
+    if(adc->detectI2C(0x48)){    // Detect the pcf8591.
+        delete adc;              // Free previously pointed memory
+        adc = new PCF8591();     // If detected, create an instance of PCF8591.
+    }
+    else if(adc->detectI2C(0x4b)){// Detect the ads7830
+        delete adc;               // Free previously pointed memory
+        adc = new ADS7830();      // If detected, create an instance of ADS7830.
+    }
+    else{
+        printf("No correct I2C address found, \n"
+        "Please use command 'i2cdetect -y 1' to check the I2C address! \n"
+        "Program Exit. \n");
+        return -1;
+    } 
+    wiringPiSetup();    
+    softPwmCreate(ledPin,0,100);    
+    while(1){
+        int value = adc->analogRead(0);  //read analog value of A0 pin
+        softPwmWrite(ledPin,value*100/255);
+        float voltage = (float)value / 255.0 * 3.3;  // calculate voltage
+        printf("ADC value : %d  ,\tVoltage : %.2fV\n",value,voltage);
+        delay(100);
+    }
+    return 0;
+}

Code/C_Code/11.1.1_Thermometer/Thermometer.cpp

@@ -0,0 +1,43 @@
+/**********************************************************************
+* Filename    : Thermometer.cpp
+* Description : DIY Thermometer
+* Author      : www.freenove.com
+* modification: 2020/03/09
+**********************************************************************/
+#include <wiringPi.h>
+#include <stdio.h>
+#include <math.h>
+#include <ADCDevice.hpp>
+
+ADCDevice *adc;  // Define an ADC Device class object
+
+int main(void){
+    adc = new ADCDevice();
+    printf("Program is starting ... \n");
+
+    if(adc->detectI2C(0x48)){    // Detect the pcf8591.
+        delete adc;                // Free previously pointed memory
+        adc = new PCF8591();    // If detected, create an instance of PCF8591.
+    }
+    else if(adc->detectI2C(0x4b)){// Detect the ads7830
+        delete adc;               // Free previously pointed memory
+        adc = new ADS7830();      // If detected, create an instance of ADS7830.
+    }
+    else{
+        printf("No correct I2C address found, \n"
+        "Please use command 'i2cdetect -y 1' to check the I2C address! \n"
+        "Program Exit. \n");
+        return -1;
+    }
+    printf("Program is starting ... \n");
+    while(1){
+        int adcValue = adc->analogRead(0);  //read analog value A0 pin    
+        float voltage = (float)adcValue / 255.0 * 3.3;    // calculate voltage    
+        float Rt = 10 * voltage / (3.3 - voltage);        //calculate resistance value of thermistor
+        float tempK = 1/(1/(273.15 + 25) + log(Rt/10)/3950.0); //calculate temperature (Kelvin)
+        float tempC = tempK -273.15;        //calculate temperature (Celsius)
+        printf("ADC value : %d  ,\tVoltage : %.2fV, \tTemperature : %.2fC\n",adcValue,voltage,tempC);
+        delay(100);
+    }
+    return 0;
+}