client_plain.c

#include <RF22ReliableDatagram.h>
#include <RF22.h>
#include <SPI.h>
#define CLIENT_ADDRESS 1
#define SERVER_ADDRESS 2

RF22ReliableDatagram rf22(CLIENT_ADDRESS);

void setup() {
  Serial.begin(9600);

  if (!rf22.init()) {
    Serial.println("RF22 init failed");
  }
}

// uint8_t data[] = "Hello World!";
uint8_t buf[RF22_MAX_MESSAGE_LEN];
uint8_t data[] = {
  255, 0, 0,
  255, 0, 0,
  255, 0, 0,
  0, 255, 0,
  0, 255, 0,
  0, 255, 0,
  0, 0, 255,
  0, 0, 255,
  0, 0, 255,
  255, 0, 0,
  255, 0, 0,
  255, 0, 0,
  0, 255, 0,
  0, 255, 0,
  0, 255, 0,
  255, 255, 255
};

void loop() {
  Serial.println("Sending to rf22_datagram_server");

  if (!rf22.sendtoWait(data, sizeof(data), SERVER_ADDRESS)) {
    Serial.println("sendtoWait failed");
  } else {
    // uint8_t len = sizeof(buf);
    // uint8_t from;

    // if (rf22.recvfromAckTimeout(buf, &len, 2000, &from)) {
    //   Serial.print("got reply from : 0x");
    //   Serial.print(from, HEX);
    //   Serial.print(": ");
    //   Serial.println((char*)buf);
    // } else {
    //   Serial.println("No reply, is rf22_datagram_server running?");
    // }
  }

  delay(500);
}