386 lines
8.8 KiB
Plaintext
386 lines
8.8 KiB
Plaintext
/*
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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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* Full test on single RF pair
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*
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* This sketches uses as many RF24 methods as possible in a single test.
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*
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* To operate:
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* Upload this sketch on two nodes, each with IRQ -> pin 2
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* One node needs pin 7 -> GND, the other NC. That's the receiving node
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* Monitor the sending node's serial output
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* Look for "+OK PASS" or "+OK FAIL"
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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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//
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// Payload
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//
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const int min_payload_size = 4;
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const int max_payload_size = 32;
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int payload_size_increments_by = 2;
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int next_payload_size = min_payload_size;
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char receive_payload[max_payload_size+1]; // +1 to allow room for a terminating NULL char
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//
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// Test state
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//
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bool done; //*< Are we done with the test? */
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bool passed; //*< Have we passed the test? */
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bool notified; //*< Have we notified the user we're done? */
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const int num_needed = 10; //*< How many success/failures until we're done? */
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int receives_remaining = num_needed; //*< How many ack packets until we declare victory? */
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int failures_remaining = num_needed; //*< How many more failed sends until we declare failure? */
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const int interval = 100; //*< ms to wait between sends */
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char configuration = '1'; //*< Configuration key, one char sent in by the test framework to tell us how to configure, this is the default */
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void one_ok(void)
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{
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// Have we received enough yet?
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if ( ! --receives_remaining )
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{
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done = true;
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passed = true;
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}
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}
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void one_failed(void)
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{
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// Have we failed enough yet?
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if ( ! --failures_remaining )
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{
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done = true;
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passed = false;
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}
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}
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//
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// Setup
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//
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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/tests/pingpair_test/\n\r");
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printf("ROLE: %s\n\r",role_friendly_name[role]);
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//
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// Read configuration from serial
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//
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// It would be a much better test if this program could accept configuration
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// from the serial port. Then it would be possible to run the same test under
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// lots of different circumstances.
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//
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// The idea is that we will print "+READY" at this point. The python script
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// will wait for it, and then send down a configuration script that we
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// execute here and then run with.
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//
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// The test controller will need to configure the receiver first, then go run
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// the test on the sender.
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//
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printf("+READY press any key to start\n\r\n\r");
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while (! Serial.available() ) {}
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configuration = Serial.read();
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printf("Configuration\t = %c\n\r",configuration);
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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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// Config 2 is special radio config
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if (configuration=='2')
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{
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radio.setCRCLength(RF24_CRC_8);
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radio.setDataRate(RF24_250KBPS);
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radio.setChannel(10);
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}
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else
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{
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//Otherwise, default radio config
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// Optional: Increase CRC length for improved reliability
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radio.setCRCLength(RF24_CRC_16);
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// Optional: Decrease data rate for improved reliability
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radio.setDataRate(RF24_1MBPS);
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// Optional: Pick a high channel
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radio.setChannel(90);
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}
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// Config 3 is static payloads only
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if (configuration == '3')
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{
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next_payload_size = 16;
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payload_size_increments_by = 0;
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radio.setPayloadSize(next_payload_size);
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}
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else
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{
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// enable dynamic payloads
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radio.enableDynamicPayloads();
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}
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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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//
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// Loop
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//
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static uint32_t message_count = 0;
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static uint32_t last_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 && !done)
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{
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// The payload will always be the same, what will change is how much of it we send.
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static char send_payload[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ789012";
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// First, stop listening so we can talk.
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radio.stopListening();
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// Send it. This will block until complete
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printf("\n\rNow sending length %i...",next_payload_size);
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radio.startWrite( send_payload, next_payload_size );
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// Update size for next time.
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next_payload_size += payload_size_increments_by;
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if ( next_payload_size > max_payload_size )
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next_payload_size = min_payload_size;
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// Try again soon
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delay(interval);
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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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// Stop the test if we're done and report results
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//
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if ( done && ! notified )
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{
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notified = true;
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printf("\n\r+OK ");
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if ( passed )
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printf("PASS\n\r\n\r");
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else
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printf("FAIL\n\r\n\r");
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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 ");
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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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{
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printf("Send:Failed ");
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// log status of this line
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one_failed();
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}
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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 ",message_count);
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// is this ack what we were expecting? to account
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// for failures, we simply want to make sure we get a
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// DIFFERENT ack every time.
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if ( ( message_count != last_message_count ) || ( configuration=='3' && message_count == 16 ) )
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{
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printf("OK ");
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one_ok();
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}
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else
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{
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printf("FAILED ");
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one_failed();
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}
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last_message_count = 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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size_t len = max_payload_size;
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memset(receive_payload,0,max_payload_size);
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if ( configuration == '3' )
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len = next_payload_size;
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else
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len = radio.getDynamicPayloadSize();
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radio.read( receive_payload, len );
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// Put a zero at the end for easy printing
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receive_payload[len] = 0;
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// Spew it
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printf("Got payload size=%i value=%s strlen=%u\n\r",len,receive_payload,strlen(receive_payload));
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// Add an ack packet for the next time around.
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// Here we will report back how many bytes we got this time.
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radio.writeAckPayload( 1, &len, sizeof(len) );
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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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