mrf24j40/examples/TX_only/TX_only.pde

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/**
* Example code for using a microchip mrf24j40 module to send simple packets
*
* Requirements: 3 pins for spi, 3 pins for reset, chip select and interrupt
* notifications
* This example file is considered to be in the public domain
* Originally written by Karl Palsson, karlp@tweak.net.au, March 2011
*/
#include <SPI.h>
#include <mrf24j.h>
const int pin_reset = 6;
const int pin_cs = 7;
const int pin_interrupt = 5;
Mrf24j mrf(pin_reset, pin_cs, pin_interrupt);
long last_time;
long tx_interval = 1000;
void setup() {
Serial.begin(9600);
mrf.set_pan(0xcafe);
// This is _our_ address
mrf.address16_write(0x6001);
attachInterrupt(0, interrupt_routine, CHANGE);
last_time = millis();
interrupts();
}
void interrupt_routine() {
// read and clear interrupt flags from the radio
byte last_interrupt = mrf.read_short(MRF_INTSTAT);
// we don't care about the rx acks, but we need them to be flushed so it can keep receiving
if (last_interrupt & MRF_I_RXIF) {
mrf.write_short(MRF_RXFLUSH, 0x01);
}
}
void loop() {
int tmp;
unsigned long current_time = millis();
if (current_time - last_time > tx_interval) {
last_time = current_time;
Serial.println("txxxing...");
char * msg = "hello world";
mrf.send16(0x4202, strlen(msg), msg);
}
}