57 lines
1.5 KiB
Plaintext
57 lines
1.5 KiB
Plaintext
/**
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* Example code for using a microchip mrf24j40 module to receive only
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* packets using plain 802.15.4
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* Requirements: 3 pins for spi, 3 pins for reset, chip select and interrupt
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* notifications
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* This example file is considered to be in the public domain
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* Originally written by Karl Palsson, karlp@tweak.net.au, March 2011
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*/
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#include <SPI.h>
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#include <mrf24j.h>
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const int pin_reset = 6;
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const int pin_cs = 10; // default CS pin on ATMEGA8
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const int pin_interrupt = 2; // default interrupt pin on ATMEGA8
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Mrf24j mrf(pin_reset, pin_cs, pin_interrupt);
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void setup() {
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Serial.begin(9600);
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mrf.set_pan(0xcafe);
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// This is _our_ address
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mrf.address16_write(0x6001);
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mrf.set_channel(12);
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// uncomment if you want to receive any packet on this channel
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// mrf.set_promiscuous(true);
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attachInterrupt(0, interrupt_routine, CHANGE); // interrupt 0 equivalent to pin 2 on ATMEGA8
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interrupts();
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}
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void interrupt_routine() {
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mrf.interrupt_handler();
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}
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void loop() {
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mrf.check_flags(&handle_rx, &handle_tx);
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}
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void handle_rx() {
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Serial.print("received a packet ");Serial.print(mrf.get_rxinfo()->frame_length, DEC);Serial.println(" bytes long");
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Serial.println("Packet data:");
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for (int i = 0; i < mrf.rx_datalength(); i++) {
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Serial.write(mrf.get_rxinfo()->rx_data[i]);
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}
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Serial.print("\r\nLQI/RSSI=");
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Serial.print(mrf.get_rxinfo()->lqi, DEC);
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Serial.print("/");
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Serial.println(mrf.get_rxinfo()->rssi, DEC);
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}
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void handle_tx() {
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// code to transmit, nothing to do
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} |