@arturo_olvrs code:
/*
Copyright (C) 2011 James Coliz, Jr. <maniacbug@ymail.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 2 as published by the Free Software Foundation.
*/
/**
* Full test on single RF pair
*
* This sketches uses as many RF24 methods as possible in a single test.
*
* To operate:
* Upload this sketch on two nodes, each with IRQ -> pin 2
* One node needs pin 7 -> GND, the other NC. That's the receiving node
* Monitor the sending node's serial output
* Look for "+OK PASS" or "+OK FAIL"
*/
#include <SPI.h>
#include "nRF24L01.h"
#include "RF24.h"
#include "printf.h"
//
// Hardware configuration
//
// Set up nRF24L01 radio on SPI bus plus pins 8 & 9
RF24 radio(7, 8);
// sets the role of this unit in hardware. Connect to GND to be the 'pong' receiver
// Leave open to be the 'ping' transmitter
const short role_pin = 5;
//
// Topology
//
// Single radio pipe address for the 2 nodes to communicate.
const uint64_t pipe = 0xE8E8F0F0E1LL;
//
// Role management
//
// Set up role. This sketch uses the same software for all the nodes in this
// system. Doing so greatly simplifies testing. The hardware itself specifies
// which node it is.
//
// This is done through the role_pin
//
// The various roles supported by this sketch
typedef enum {
role_sender = 1,
role_receiver
} role_e;
// The debug-friendly names of those roles
const char* role_friendly_name[] = {"invalid", "Sender", "Receiver"};
// The role of the current running sketch
role_e role;
// Interrupt handler, check the radio because we got an IRQ
void check_radio(void);
//
// Payload
//
const int min_payload_size = 4;
const int max_payload_size = 32;
int payload_size_increments_by = 2;
int next_payload_size = min_payload_size;
char receive_payload[max_payload_size + 1]; // +1 to allow room for a terminating NULL char
//
// Test state
//
bool done; //*< Are we done with the test? */
bool passed; //*< Have we passed the test? */
bool notified; //*< Have we notified the user we're done? */
const int num_needed = 10; //*< How many success/failures until we're done? */
int receives_remaining = num_needed; //*< How many ack packets until we declare victory? */
int failures_remaining = num_needed; //*< How many more failed sends until we declare failure? */
const int interval = 100; //*< ms to wait between sends */
char configuration = '1'; //*< Configuration key, one char sent in by the test framework to tell us how to configure, this is the default */
uint8_t pipe_number = 1; // Which pipe to send on.
void one_ok(void)
{
// Have we received enough yet?
if (!--receives_remaining) {
done = true;
passed = true;
}
}
void one_failed(void)
{
// Have we failed enough yet?
if (!--failures_remaining) {
done = true;
passed = false;
}
}
//
// Setup
//
void setup(void)
{
//
// Role
//
// set up the role pin
pinMode(role_pin, INPUT);
digitalWrite(role_pin, HIGH);
delay(20); // Just to get a solid reading on the role pin
// read the address pin, establish our role
if (digitalRead(role_pin)) {
role = role_sender;
} else {
role = role_receiver;
}
//
// Print preamble
//
Serial.begin(115200);
printf_begin();
printf("\n\rRF24/tests/pingpair_test/\n\r");
printf("ROLE: %s\n\r", role_friendly_name[role]);
//
// Read configuration from serial
//
// It would be a much better test if this program could accept configuration
// from the serial port. Then it would be possible to run the same test under
// lots of different circumstances.
//
// The idea is that we will print "+READY" at this point. The python script
// will wait for it, and then send down a configuration script that we
// execute here and then run with.
//
// The test controller will need to configure the receiver first, then go run
// the test on the sender.
//
printf("+READY press any key to start\n\r\n\r");
while (!Serial.available()) {
}
configuration = Serial.read();
printf("Configuration\t = %c\n\r", configuration);
//
// Setup and configure rf radio
//
radio.begin();
// We will be using the Ack Payload feature, so please enable it
radio.enableAckPayload();
radio.enableDynamicPayloads(); // needed for using ACK payloads
// Config 2 is special radio config
if (configuration == '2'){
radio.setCRCLength(RF24_CRC_8);
radio.setDataRate(RF24_250KBPS);
radio.setChannel(10);
}else{
//Otherwise, default radio config
// Optional: Increase CRC length for improved reliability
radio.setCRCLength(RF24_CRC_16);
// Optional: Decrease data rate for improved reliability
radio.setDataRate(RF24_1MBPS);
// Optional: Pick a high channel
radio.setChannel(90);
}
// Config 3 is static payloads only
if (configuration == '3'){
next_payload_size = 16;
payload_size_increments_by = 0;
radio.setPayloadSize(next_payload_size);
}else{
// enable dynamic payloads
radio.enableDynamicPayloads();
}
// Config 4 tests out a higher pipe ##
if (configuration == '4' && role == role_sender){
// Set top 4 bytes of the address in pipe 1
radio.openReadingPipe(1, pipe & 0xFFFFFFFF00ULL);
// indicate the pipe to use
pipe_number = 5;
}else if (role == role_sender){
radio.openReadingPipe(5, 0);
}
//
// Open pipes to other nodes for communication
//
// This simple sketch opens a single pipe for these two nodes to communicate
// back and forth. One listens on it, the other talks to it.
if (role == role_sender){
radio.openWritingPipe(pipe);
}else{
radio.openReadingPipe(pipe_number, pipe);
}
//
// Start listening
//
if (role == role_receiver){
radio.startListening();
}
//
// Dump the configuration of the rf unit for debugging
//
radio.printDetails();
//
// Attach interrupt handler to interrupt #0 (using pin 2)
// on BOTH the sender and receiver
//
attachInterrupt(0, check_radio, FALLING);
delay(50);
if (role == role_receiver){
printf("\n\r+OK ");
}
}
//
// Print buffer
//
// Printing from the interrupt handler is a bad idea, so we print from there
// to this intermediate buffer
//
char prbuf[1000];
char* prbuf_end = prbuf + sizeof(prbuf);
char* prbuf_in = prbuf;
char* prbuf_out = prbuf;
//
// Loop
//
static uint32_t message_count = 0;
static uint32_t last_message_count = 0;
void loop(void){
//
// Sender role. Repeatedly send the current time
//
if (role == role_sender && !done){
// The payload will always be the same, what will change is how much of it we send.
static char send_payload[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ789012";
// First, stop listening so we can talk.
radio.stopListening();
// Send it. This will block until complete
printf("\n\rNow sending length %i...", next_payload_size);
radio.startWrite(send_payload, next_payload_size, 0);
// Update size for next time.
next_payload_size += payload_size_increments_by;
if (next_payload_size > max_payload_size){
next_payload_size = min_payload_size;
}
// Try again soon
delay(interval);
// Timeout if we have not received anything back ever
if (!last_message_count && millis() > interval * 100){
printf("No responses received. Are interrupts connected??\n\r");
done = true;
}
}
//
// Receiver role: Does nothing! All the work is in IRQ
//
//
// Spew print buffer
//
size_t write_length = prbuf_in - prbuf_out;
if (write_length){
Serial.write(reinterpret_cast<uint8_t*>(prbuf_out), write_length);
prbuf_out += write_length;
}
//
// Stop the test if we're done and report results
//
if (done && !notified){
notified = true;
printf("\n\r+OK ");
if (passed){
printf("PASS\n\r\n\r");
}else{
printf("FAIL\n\r\n\r");
}
}
}
void check_radio(void)
{
// What happened?
bool tx, fail, rx;
radio.whatHappened(tx, fail, rx);
// Have we successfully transmitted?
if (tx){
if (role == role_sender){
prbuf_in += sprintf(prbuf_in, "Send:OK ");
}
if (role == role_receiver){
prbuf_in += sprintf(prbuf_in, "Ack Payload:Sent\n\r");
}
}
// Have we failed to transmit?
if (fail){
if (role == role_sender){
prbuf_in += sprintf(prbuf_in, "Send:Failed ");
// log status of this line
one_failed();
}
if (role == role_receiver){
prbuf_in += sprintf(prbuf_in, "Ack Payload:Failed\n\r");
}
}
// Not powering down since radio is in standby mode
//if (( tx || fail ) && ( role == role_sender )){ radio.powerDown(); }
// Did we receive a message?
if (rx){
// If we're the sender, we've received an ack payload
if (role == role_sender){
radio.read(&message_count, sizeof(message_count));
prbuf_in += sprintf(prbuf_in, "Ack:%lu ", message_count);
// is this ack what we were expecting? to account
// for failures, we simply want to make sure we get a
// DIFFERENT ack every time.
if ((message_count != last_message_count) || (configuration == '3' && message_count == 16)){
prbuf_in += sprintf(prbuf_in, "OK ");
one_ok();
}else{
prbuf_in += sprintf(prbuf_in, "FAILED ");
one_failed();
}
last_message_count = message_count;
}
// If we're the receiver, we've received a time message
if (role == role_receiver){
// Get this payload and dump it
size_t len = max_payload_size;
memset(receive_payload, 0, max_payload_size);
if (configuration == '3'){
len = next_payload_size;
}else{
len = radio.getDynamicPayloadSize();
}
radio.read(receive_payload, len);
// Put a zero at the end for easy printing
receive_payload[len] = 0;
// Spew it
prbuf_in += sprintf(prbuf_in, "Recv size=%i val=%s len=%u\n\r", len, receive_payload, strlen(receive_payload));
// Add an ack packet for the next time around.
// Here we will report back how many bytes we got this time.
radio.writeAckPayload(pipe_number, &len, sizeof(len));
++message_count;
}
}
}