RF24Gateway - TCP/IP over RF24Network v1.0.4
TMRh20 - Pushing the practical limits of RF24 modules
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A simple example of using RF24Gateway node to forward IP traffic automatically to a network interface, while managing standard RF24Network user payloads independently.

#include <RF24/RF24.h>
#include <RF24Network/RF24Network.h>
#include <RF24Mesh/RF24Mesh.h>
#include <RF24Gateway/RF24Gateway.h>
RF24 radio(22, 0);
RF24Network network(radio);
RF24Mesh mesh(radio, network);
RF24Gateway gw(radio, network, mesh);
uint32_t mesh_timer = 0;
int main(int argc, char** argv)
//Config for use with RF24Mesh as Master Node
//uint8_t nodeID=0;
//Config for use with RF24Mesh as child Node
// uint8_t nodeID = 2;
// gw.begin(nodeID);
//Config for use without RF24Mesh
// uint16_t RF24NetworkAddress = 0;
// gw.begin(RF24NetworkAddress);
//Set this to your chosen IP/Subnet
char ip[] = "";
char subnet[] = "";
gw.setIP(ip, subnet);
uint32_t failCounter = 0;
while (1)
// The gateway handles all IP traffic (marked as EXTERNAL_DATA_TYPE) and passes it to the associated network interface
// RF24Network user payloads are loaded into the user cache
if (network.available())
RF24NetworkHeader header;
size_t size = network.peek(header);
uint8_t buf[size];
network.read(header, &buf, size);
printf("Received Network Message, type: %d id %d from %d\n", header.type, header.id, mesh.getNodeID(header.from_node));
RF24NetworkFrame frame = RF24NetworkFrame(header, buf, size);
gw.sendUDP(mesh.getNodeID(header.from_node), frame);
if (millis() - mesh_timer > 30000 && mesh.getNodeID())
{ //Every 30 seconds, test mesh connectivity
mesh_timer = millis();
if (!mesh.checkConnection())
//refresh the network address
//This section checks for failures detected by RF24 & RF24Network as well as
//checking for deviations from the default configuration (1MBPS data rate)
//The mesh is restarted on failure and failure count logged to failLog.txt
//This makes the radios hot-swappable, disconnect & reconnect as desired, it should come up automatically
if (radio.failureDetected > 0 || radio.getDataRate() != RF24_1MBPS)
radio.failureDetected = 0;
std::ofstream myFile;
if (myFile.is_open())
myFile << ++failCounter << "\n";
return 0;