Port Example Code with new RadioHead Library

Firmware/Arduino/examples/01-RadioHead-Simple_RFLink_Tx/01-RadioHead-Simple_RFLink_Tx.ino

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+/*RF ASK Tx and Rx Example Code
+  Created in 2011 by NPoole @ SparkFun Electronics
+
+  modified 13 Oct 2022
+  by Bobby Chan @ SparkFun Electronics
+
+  Description:
+  This code depends on the RadioHead Library for Arduino and is
+  based on the example code provided by Mike McCauley.
+  It is based on the ask_transmitter.pde example.
+  To download the most recent RadioHead Library =>
+  http://www.airspayce.com/mikem/arduino/RadioHead/index.html
+  See RH_ASK.h for detailed API docs. You will need to use this code
+  with the 02-RadioHead-Simple_RFLink_Rx.ino.
+
+  This example shows how to use the RadioHead Library to send and receive
+  simple messages and use them to control digital I/O pins with the RF Links.
+  Can be used for either the 314MHz or 434MHz frequency bands. Be sure that the
+  transmitter and the receiver are using the same frequency in order to transmit
+  data. Buttons are connected to the transmitting Arduino on pins 8-11 and ground.
+  Arduino's internal pullup resistor is used with the button. Pin 13 is enabled
+  as a status LED to indicate when characters are being sent.
+
+  For the receiving side, they are set up in the same fashion, where LEDs are
+  connected to the receiving Arduino on pin 8. When a button is pressed on the
+  transmitter, the corresponding LED will light on the receiver if the character
+  matches what is expected. Pin 13 is enabled as a status LED to indicate
+  when characters are being received.
+
+  Note: You may need to check out the ASCII Table
+  when viewing the output as it is the ASCII value
+  http://www.asciitable.com/ for more information.
+
+  This was tested on an Arduino Uno w/ ATmega328P and RF Link Transmitters (315MHz 434MHz)
+*/
+
+// RF LINK RECEIVER LIBRARY
+#include <RH_ASK.h>
+#ifdef RH_HAVE_HARDWARE_SPI
+#include <SPI.h> // Not actually used but needed to compile
+#endif
+
+RH_ASK driver(2000, 2, 3, 0);  //2000bps, rxPin = 2, txPin = 3
+//RH_ASK driver;  //defaults 2000bps, rxPin = 11, txPin = 1
+// RH_ASK driver(2000, 4, 5, 0); // ESP8266 or ESP32: do not use pin 11 or 2
+// RH_ASK driver(2000, 3, 4, 0); // ATTiny, RX on D3 (pin 2 on attiny85) TX on D4 (pin 3 on attiny85),
+// RH_ASK driver(2000, PD14, PD13, 0); STM32F4 Discovery: see tx and rx on Orange and Red LEDS
+
+void setup() {
+#ifdef RH_HAVE_SERIAL
+  Serial.begin(9600);	  // Debugging only
+  Serial.println("Initialize RF Link Tx Code");
+#endif
+  if (!driver.init())
+#ifdef RH_HAVE_SERIAL
+    Serial.println("init failed");
+#else
+    ;
+#endif
+
+  //Set pin for LED as status indicator
+  pinMode (13, OUTPUT);
+
+  //Set pins as input for buttons
+  pinMode(8, INPUT_PULLUP);
+
+  //Initialize button pins
+  digitalWrite(8, HIGH);
+
+  const char *msg = "hello";
+
+  tx_debug(msg);
+  driver.send((uint8_t *)msg, strlen(msg));
+  driver.waitPacketSent();
+  delay(200);
+}
+
+void loop() {
+
+  if (digitalRead(8) == LOW) {
+    digitalWrite(13, true);  //Flash status LED to show transmitting
+    char *msg_button1 = "1"; //message to send
+    tx_debug(msg_button1);
+    driver.send((uint8_t *)msg_button1, strlen(msg_button1));
+    driver.waitPacketSent();
+    delay(200);
+  }
+
+  //Turn off status LED
+  digitalWrite(13, false);
+
+  //Short delay to see the LEDs toggle, comment out if necessary
+  delay(200);
+
+}
+
+
+void tx_debug(char *temp_msg) {
+  //output to serial monitor to indicate which button pressed
+  Serial.print("Button was pressed, sending msg = ");
+  Serial.println(temp_msg);
+}

Firmware/Arduino/examples/02-RadioHead-Simple_RFLink_Rx/02-RadioHead-Simple_RFLink_Rx.ino

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+/*RF ASK Tx and Rx Example Code
+  Created in 2011 by NPoole @ SparkFun Electronics
+q
+  modified 13 Oct 2022
+  by Bobby Chan @ SparkFun Electronics
+
+  Description:
+  This code depends on the RadioHead Library for Arduino and is
+  based on the example code provided by Mike McCauley.
+  It is based on the ask_receivier.pde example.
+  To download the most recent RadioHead Library =>
+  http://www.airspayce.com/mikem/arduino/RadioHead/index.html
+  See RH_ASK.h for detailed API docs. You will need to use this code
+  with the 01-RadioHead-Simple_RFLink_Tx.ino.
+
+  This example shows how to use the RadioHead Library to send and receive
+  simple messages and use them to control digital I/O pins with the RF Links.
+  Can be used for either the 314MHz or 434MHz frequency bands. Be sure that the
+  transmitter and the receiver are using the same frequency in order to transmit
+  data. Buttons are connected to the transmitting Arduino on pins 8-11 and ground.
+  Arduino's internal pullup resistor is used with the button. Pin 13 is enabled
+  as a status LED to indicate when characters are being sent.
+
+  For the receiving side, they are set up in the same fashion, where LEDs are
+  connected to the receiving Arduino on pin 8. When a button is pressed on the
+  transmitter, the corresponding LED will light on the receiver if the character
+  matches what is expected. Pin 13 is enabled as a status LED to indicate
+  when characters are being received.
+
+  Note: You may need to check out the ASCII Table
+  when viewing the output as it is the ASCII value
+  http://www.asciitable.com/ for more information.
+
+  This was tested on an Arduino Uno w/ ATmega328P and RF Link Transmitters (315MHz 434MHz).
+*/
+
+// RF LINK RECEIVER LIBRARY
+#include <RH_ASK.h>
+#ifdef RH_HAVE_HARDWARE_SPI
+#include <SPI.h> // Not actually used but needed to compile
+#endif
+
+RH_ASK driver(2000, 2, 3, 0); //2000bps, rxPin = 2, txPin = 3
+//RH_ASK driver;  //defaults 2000bps, rxPin = 11, txPin = 1
+// RH_ASK driver(2000, 4, 5, 0); // ESP8266 or ESP32: do not use pin 11 or 2
+// RH_ASK driver(2000, 3, 4, 0); // ATTiny, RX on D3 (pin 2 on attiny85) TX on D4 (pin 3 on attiny85),
+// RH_ASK driver(2000, PD14, PD13, 0); STM32F4 Discovery: see tx and rx on Orange and Red LEDS
+
+void setup() {
+#ifdef RH_HAVE_SERIAL
+  Serial.begin(9600);	  // Debugging only
+  Serial.println("Initialize RF Link Rx Code");
+#endif
+  if (!driver.init())
+#ifdef RH_HAVE_SERIAL
+    Serial.println("init failed");
+#else
+    ;
+#endif
+
+  //Set pins for LED Output
+  pinMode(8, OUTPUT);
+
+  //Set pin for LED as status indicator
+  pinMode (13, OUTPUT);
+}
+
+void loop() {
+
+  //Initialize/reinitialize LEDs
+  digitalWrite(8, LOW);
+
+  //Set buffer array based on max message length
+  uint8_t buf[RH_ASK_MAX_MESSAGE_LEN];
+
+  //Set variable to indicate buffer length
+  uint8_t buflen = sizeof(buf);
+
+  if (driver.recv(buf, &buflen)) // Non-blocking
+  {
+    // Flash status LED to show received data
+    digitalWrite(13, true);
+
+    //Note: This line of code just prints the buffer with space
+    //      you will see the ASCII value instead of the character
+    // Message with a good checksum received, dump it.
+    //driver.printBuffer("Got:", buf, buflen);
+
+
+    // Message with a good checksum received, dump it.
+    Serial.print("Received message: ");
+
+    //print each character individually, this is useful if you are just checking for certain characters and printing it as character
+    //Note: The original code for the ask_receiver.pde used `int i` but it 
+    //doesn't appear to be used. Just in case, we'll create another variable `j`
+    for (int j = 0; j < buflen; j++) {
+
+      // Print message received in buffer through this loop as a character by typcasting it as a char
+      Serial.print((char)buf[j]);
+      //add space to distinguish characters from each other if showing ASCII decimal #
+      //Serial.print(" ");
+
+      //if character received matches, turn on associated LED
+      if (buf[j] == '1') {
+        digitalWrite(8, HIGH);
+      }
+
+    }
+    //Print next character on new line
+    Serial.println("");
+
+    //Short delay to see the LEDs toggle, comment out if necessary
+    delay(200);
+
+    //Turn off status LED
+    digitalWrite(13, false);
+
+  }
+}

Firmware/Arduino/examples/03-RadioHead-RFLink_Tx/03-RadioHead-RFLink_Tx.ino

@@ -0,0 +1,135 @@
+/*RF ASK Tx and Rx Example Code
+  Created in 2011 by NPoole @ SparkFun Electronics
+
+  modified 13 Oct 2022
+  by Bobby Chan @ SparkFun Electronics
+
+  Description:
+  This code depends on the RadioHead Library for Arduino and is
+  based on the example code provided by Mike McCauley.
+  It is based on the ask_transmitter.pde example.
+  To download the most recent RadioHead Library =>
+  http://www.airspayce.com/mikem/arduino/RadioHead/index.html
+  See RH_ASK.h for detailed API docs. You will need to use this code
+  with the 04-RadioHead-RFLink_Rx.ino.
+
+  This example shows how to use the RadioHead Library to send and receive
+  simple messages and use them to control digital I/O pins with the RF Links.
+  Can be used for either the 314MHz or 434MHz frequency bands. Be sure that the
+  transmitter and the receiver are using the same frequency in order to transmit
+  data. Buttons are connected to the transmitting Arduino on pins 8-11 and ground.
+  Arduino's internal pullup resistor is used with the button. Pin 13 is enabled
+  as a status LED to indicate when characters are being sent.
+
+  For the receiving side, they are set up in the same fashion, where LEDs are
+  connected to the receiving Arduino on pins 8-11. When a button is pressed on the
+  transmitter, the corresponding LED will light on the receiver if the character
+  matches what is expected. Pin 13 is enabled as a status LED to indicate
+  when characters are being received.
+
+  Note: You may need to check out the ASCII Table
+  when viewing the output as it is the ASCII value
+  http://www.asciitable.com/ for more information.
+
+  This was tested on an Arduino Uno w/ ATmega328P and RF Link Transmitters (315MHz 434MHz)
+*/
+
+// RF LINK RECEIVER LIBRARY
+#include <RH_ASK.h>
+#ifdef RH_HAVE_HARDWARE_SPI
+#include <SPI.h> // Not actually used but needed to compile
+#endif
+
+RH_ASK driver(2000, 2, 3, 0);  //2000bps, rxPin = 2, txPin = 3
+//RH_ASK driver;  //defaults 2000bps, rxPin = 11, txPin = 1
+// RH_ASK driver(2000, 4, 5, 0); // ESP8266 or ESP32: do not use pin 11 or 2
+// RH_ASK driver(2000, 3, 4, 0); // ATTiny, RX on D3 (pin 2 on attiny85) TX on D4 (pin 3 on attiny85),
+// RH_ASK driver(2000, PD14, PD13, 0); STM32F4 Discovery: see tx and rx on Orange and Red LEDS
+
+void setup() {
+#ifdef RH_HAVE_SERIAL
+  Serial.begin(9600);	  // Debugging only
+  Serial.println("Initialize RF Link Tx Code");
+#endif
+  if (!driver.init())
+#ifdef RH_HAVE_SERIAL
+    Serial.println("init failed");
+#else
+    ;
+#endif
+
+  //Set pin for LED as status indicator
+  pinMode (13, OUTPUT);
+
+  //Set pins as input for buttons
+  pinMode(8, INPUT_PULLUP);
+  pinMode(9, INPUT_PULLUP);
+  pinMode(10, INPUT_PULLUP);
+  pinMode(11, INPUT_PULLUP);
+
+  //Initialize button pins
+  digitalWrite(8, HIGH);
+  digitalWrite(9, HIGH);
+  digitalWrite(10, HIGH);
+  digitalWrite(11, HIGH);
+
+  const char *msg = "hello";
+
+  tx_debug(msg);
+  driver.send((uint8_t *)msg, strlen(msg));
+  driver.waitPacketSent();
+  delay(200);
+}
+
+void loop() {
+
+  if (digitalRead(8) == LOW) {
+    digitalWrite(13, true);  //Flash status LED to show transmitting
+    char *msg_button1 = "1"; //message to send
+    tx_debug(msg_button1);
+    driver.send((uint8_t *)msg_button1, strlen(msg_button1));
+    driver.waitPacketSent();
+    delay(200);
+  }
+
+  if (digitalRead(9) == LOW) {
+    digitalWrite(13, true);  //Flash status LED to show transmitting
+    char *msg_button2 = "2"; //message to send
+    tx_debug(msg_button2);
+    driver.send((uint8_t *)msg_button2, strlen(msg_button2));
+    driver.waitPacketSent();
+    delay(200);
+  }
+
+  if (digitalRead(10) == LOW) {
+    digitalWrite(13, true);  //Flash status LED to show transmitting
+    char *msg_button3 = "3"; //message to send
+    tx_debug(msg_button3);
+    driver.send((uint8_t *)msg_button3, strlen(msg_button3));
+    driver.waitPacketSent();
+    delay(200);
+  }
+
+  if (digitalRead(11) == LOW) {
+    digitalWrite(13, true);  //Flash status LED to show transmitting
+    char *msg_button4 = "4"; //message to send
+    tx_debug(msg_button4);
+    driver.send((uint8_t *)msg_button4, strlen(msg_button4));
+    driver.waitPacketSent();
+    delay(200);
+  }
+
+  //Turn off status LED
+  digitalWrite(13, false);
+
+  //Short delay to see the LEDs toggle, comment out if necessary
+  delay(200);
+
+}
+
+
+void tx_debug(char *temp_msg) {
+  //output to serial monitor to indicate which button pressed
+  Serial.print("Button was pressed, sending msg = ");
+  Serial.println(temp_msg);
+}