RF22
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Server side of simple client/server pair using RF22ReliableDatagram class
// rf22_reliable_datagram_server.pde // -*- mode: C++ -*- // Example sketch showing how to create a simple addressed, reliable messaging server // with the RF22Datagram class. // It is designed to work with the other example rf22_reliable_datagram_client #include <RF22ReliableDatagram.h> #include <RF22.h> #include <SPI.h> #define CLIENT_ADDRESS 1 #define SERVER_ADDRESS 2 // Singleton instance of the radio RF22ReliableDatagram rf22(SERVER_ADDRESS); void setup() { Serial.begin(9600); if (!rf22.init()) Serial.println("RF22 init failed"); // Defaults after init are 434.0MHz, 0.05MHz AFC pull-in, modulation FSK_Rb2_4Fd36 } uint8_t data[] = "And hello back to you"; // Dont put this on the stack: uint8_t buf[RF22_MAX_MESSAGE_LEN]; void loop() { while (1) { // Wait for a message addressed to us from the client uint8_t len = sizeof(buf); uint8_t from; if (rf22.recvfromAck(buf, &len, &from)) { Serial.print("got request from : 0x"); Serial.print(from, HEX); Serial.print(": "); Serial.println((char*)buf); // Send a reply back to the originator client if (!rf22.sendtoWait(data, sizeof(data), from)) Serial.println("sendtoWait failed"); } } }