OPL-Receiver.ino

[kfjl]

View attachment 21831

Reçus la semaine dernière: XL1276-DO1. Compatibles avec les AI Ra-01 ET la planche à pain.
L'antenne est minable, si on pète à coté, elle pète aussi. Les pattes ne sont pas fournies.

https://fr.aliexpress.com/item/LOra...-Wireless-Transceiver-Module/32322065279.html

/* ARDUINO One Page LoRa RECEIVER 
 *  
 * AI Ra-01_V1.0 Semtech SX1278 ****** NOT BREADBOARD FRIENDLY !!!! ******
 *  
 *  LoRa       Arduino
 *  3.3V        VCC       THREE POINT THREE VOLTS !!!.!!!       
 *  GND         GND
 *  SCK         SCK       (13)
 *  MISO        MISO      (12)
 *  MOSI        MOSI      (11)
 *  NSS         10
 *  RESET       9
 */

 #include <SPI.h>

 const int nss = 10;
 const int reset = 9;
 const int lora_int = 2;
 byte data = 0;
 byte regIrqFlags = 0;
 byte lastpacket = 0;
 
void setup() {

  pinMode(reset,OUTPUT);
  pinMode(nss, OUTPUT);
  digitalWrite(nss,HIGH);
  
  SPI.begin();
  Serial.begin(9600);

  // CONFIG RX

  digitalWrite(reset,LOW);
  delayMicroseconds(100);                               // reset low 100 usec
  digitalWrite(reset,HIGH);
  delay(10);                                            // time to reset, mini 5 msec

  digitalWrite(nss,LOW);
  SPI.transfer(0x81);  SPI.transfer(0x00);              // Can only set LoRa mode from sleep mode
  digitalWrite(nss,HIGH);

  digitalWrite(nss,LOW);
  SPI.transfer(0x81);  SPI.transfer(0x88);              // LoRa, low freq mode
  digitalWrite(nss,HIGH);

  digitalWrite(nss,LOW);
  SPI.transfer(0x91);  SPI.transfer(0xBF);              // Set up flag for RX done
  digitalWrite(nss,HIGH);

  digitalWrite(nss,LOW);
  SPI.transfer(0x81);  SPI.transfer(0x8D);              // RXCONTINUOUS, low freq, LoRa mode (Listen)
  digitalWrite(nss,HIGH);

  Serial.print("Waiting for data....");

}

void loop() {
  
  digitalWrite(nss,LOW);
  SPI.transfer(0x12);  regIrqFlags = SPI.transfer(0x00); // Get regIRQFlags
  digitalWrite(nss,HIGH);

  if (regIrqFlags && 0x40){                              // RxDone

    digitalWrite(nss,LOW);
    SPI.transfer(0x10); lastpacket = SPI.transfer(0x00);     // Read last packet address
    digitalWrite(nss,HIGH);

    digitalWrite(nss,LOW);
    SPI.transfer(0x8D); SPI.transfer(lastpacket);    // Set FifoAddrPtr to last packet address
    digitalWrite(nss,HIGH);
    
    digitalWrite(nss,LOW);
    SPI.transfer(0x00);  data = SPI.transfer(0x00);    // Read character from FIFO
    digitalWrite(nss,HIGH);

    digitalWrite(nss,LOW);
    SPI.transfer(0x92);  SPI.transfer(0xFF);            // Clear LoRa IRQ flags
    digitalWrite(nss,HIGH);

    Serial.print("Received ");
    Serial.println(data);

    delay(50);
  } 
}