RF22

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rf22_router_server2.pde

Server node for RF22Router network chain

// rf22_router_server2.pde
// -*- mode: C++ -*-
// Example sketch showing how to create a simple addressed, routed reliable messaging server
// with the RF22Router class.
// It is designed to work with the other example rf22_router_client
#include <RF22Router.h>
#include <SPI.h>
// In this small artifical network of 4 nodes,
// messages are routed via intermediate nodes to their destination
// node. All nodes can act as routers
// CLIENT_ADDRESS <-> SERVER1_ADDRESS <-> SERVER2_ADDRESS<->SERVER3_ADDRESS
#define CLIENT_ADDRESS 1
#define SERVER1_ADDRESS 2
#define SERVER2_ADDRESS 3
#define SERVER3_ADDRESS 4
// Singleton instance of the radio
RF22Router rf22(SERVER2_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
// Manually define the routes for this network
// rf22.addRouteTo(CLIENT_ADDRESS, CLIENT_ADDRESS);
rf22.addRouteTo(CLIENT_ADDRESS, SERVER1_ADDRESS);
rf22.addRouteTo(SERVER1_ADDRESS, SERVER1_ADDRESS);
rf22.addRouteTo(SERVER3_ADDRESS, SERVER3_ADDRESS);
}
uint8_t data[] = "And hello back to you from server2";
// Dont put this on the stack:
uint8_t buf[RF22_ROUTER_MAX_MESSAGE_LEN];
void loop()
{
while (1)
{
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) != RF22_ROUTER_ERROR_NONE)
Serial.println("sendtoWait failed");
}
}
}