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switch to setup for Arduino Boards Manager
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Erik Tylek Kettenburg
223
digistump-sam/libraries/RF24/tests/native/pingpair_irq.pde
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223
digistump-sam/libraries/RF24/tests/native/pingpair_irq.pde
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/*
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Copyright (C) 2011 James Coliz, Jr. <maniacbug@ymail.com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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version 2 as published by the Free Software Foundation.
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*/
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/**
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* Interrupt-driven test for native target
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*
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* This example is the friendliest for the native target because it doesn't do
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* any polling. Made a slight change to call done() at the end of setup.
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*/
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#include <SPI.h>
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#include "nRF24L01.h"
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#include "RF24.h"
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#include "printf.h"
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//
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// Hardware configuration
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//
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// Set up nRF24L01 radio on SPI bus plus pins 8 & 9
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RF24 radio(8,9);
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// sets the role of this unit in hardware. Connect to GND to be the 'pong' receiver
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// Leave open to be the 'ping' transmitter
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const short role_pin = 7;
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//
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// Topology
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//
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// Single radio pipe address for the 2 nodes to communicate.
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const uint64_t pipe = 0xE8E8F0F0E1LL;
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//
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// Role management
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//
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// Set up role. This sketch uses the same software for all the nodes in this
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// system. Doing so greatly simplifies testing. The hardware itself specifies
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// which node it is.
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//
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// This is done through the role_pin
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//
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// The various roles supported by this sketch
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typedef enum { role_sender = 1, role_receiver } role_e;
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// The debug-friendly names of those roles
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const char* role_friendly_name[] = { "invalid", "Sender", "Receiver"};
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// The role of the current running sketch
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role_e role;
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// Interrupt handler, check the radio because we got an IRQ
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void check_radio(void);
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void setup(void)
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{
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//
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// Role
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//
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// set up the role pin
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pinMode(role_pin, INPUT);
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digitalWrite(role_pin,HIGH);
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delay(20); // Just to get a solid reading on the role pin
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// read the address pin, establish our role
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if ( digitalRead(role_pin) )
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role = role_sender;
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else
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role = role_receiver;
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//
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// Print preamble
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//
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Serial.begin(57600);
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printf_begin();
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printf("\n\rRF24/examples/pingpair_irq/\n\r");
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printf("ROLE: %s\n\r",role_friendly_name[role]);
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//
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// Setup and configure rf radio
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//
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radio.begin();
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// We will be using the Ack Payload feature, so please enable it
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radio.enableAckPayload();
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//
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// Open pipes to other nodes for communication
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//
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// This simple sketch opens a single pipe for these two nodes to communicate
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// back and forth. One listens on it, the other talks to it.
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if ( role == role_sender )
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{
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radio.openWritingPipe(pipe);
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}
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else
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{
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radio.openReadingPipe(1,pipe);
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}
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//
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// Start listening
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//
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if ( role == role_receiver )
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radio.startListening();
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//
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// Dump the configuration of the rf unit for debugging
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//
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radio.printDetails();
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//
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// Attach interrupt handler to interrupt #0 (using pin 2)
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// on BOTH the sender and receiver
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//
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attachInterrupt(0, check_radio, FALLING);
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//
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// On the native target, this is as far as we get
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//
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#if NATIVE
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done();
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#endif
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}
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static uint32_t message_count = 0;
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void loop(void)
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{
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//
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// Sender role. Repeatedly send the current time
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//
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if (role == role_sender)
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{
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// Take the time, and send it.
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unsigned long time = millis();
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printf("Now sending %lu\n\r",time);
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radio.startWrite( &time, sizeof(unsigned long) );
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// Try again soon
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delay(2000);
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}
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//
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// Receiver role: Does nothing! All the work is in IRQ
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//
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}
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void check_radio(void)
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{
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// What happened?
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bool tx,fail,rx;
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radio.whatHappened(tx,fail,rx);
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// Have we successfully transmitted?
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if ( tx )
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{
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if ( role == role_sender )
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printf("Send:OK\n\r");
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if ( role == role_receiver )
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printf("Ack Payload:Sent\n\r");
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}
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// Have we failed to transmit?
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if ( fail )
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{
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if ( role == role_sender )
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printf("Send:Failed\n\r");
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if ( role == role_receiver )
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printf("Ack Payload:Failed\n\r");
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}
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// Transmitter can power down for now, because
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// the transmission is done.
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if ( ( tx || fail ) && ( role == role_sender ) )
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radio.powerDown();
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// Did we receive a message?
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if ( rx )
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{
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// If we're the sender, we've received an ack payload
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if ( role == role_sender )
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{
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radio.read(&message_count,sizeof(message_count));
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printf("Ack:%lu\n\r",(unsigned long)message_count);
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}
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// If we're the receiver, we've received a time message
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if ( role == role_receiver )
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{
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// Get this payload and dump it
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static unsigned long got_time;
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radio.read( &got_time, sizeof(got_time) );
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printf("Got payload %lu\n\r",got_time);
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// Add an ack packet for the next time around. This is a simple
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// packet counter
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radio.writeAckPayload( 1, &message_count, sizeof(message_count) );
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++message_count;
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}
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}
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}
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// vim:ai:cin:sts=2 sw=2 ft=cpp
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