TMRh20
99571d6530
Updated GettingStarted, pingpair, added medium speed version of transfer rate test
164 lines
4.2 KiB
Arduino
164 lines
4.2 KiB
Arduino
/*
|
|
TMRh20 2014
|
|
|
|
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.
|
|
*/
|
|
|
|
/** General Data Transfer Rate Test
|
|
* This example demonstrates basic data transfer functionality with the
|
|
updated library. This example will display the transfer rates acheived using
|
|
the slower form of high-speed transfer using blocking-writes.
|
|
*/
|
|
|
|
|
|
|
|
#include <SPI.h>
|
|
#include "nRF24L01.h"
|
|
#include "RF24.h"
|
|
#include "printf.h"
|
|
|
|
// Hardware configuration
|
|
// Set up nRF24L01 radio on SPI bus plus pins 9 & 10
|
|
|
|
RF24 radio(48,49);
|
|
|
|
// Topology
|
|
// Radio pipe addresses for the 2 nodes to communicate.
|
|
const uint64_t pipes[2] = { 0xABCDABCD71LL, 0x544d52687CLL };
|
|
|
|
// Role management
|
|
// Set up role. This sketch uses the same software for all the nodes
|
|
// in this system. Doing so greatly simplifies testing.
|
|
|
|
// The various roles supported by this sketch
|
|
typedef enum { role_TX = 1, role_RX } role_e;
|
|
|
|
// The debug-friendly names of those roles
|
|
const char* role_friendly_name[] = { "invalid", "Ping out", "Pong back"};
|
|
|
|
//Set this to determine the default role of the current running sketch
|
|
role_e role = role_RX;
|
|
|
|
//Data buffer for testing data transfer speeds
|
|
byte data[32];
|
|
|
|
//Counter and timer for keeping track transfer info
|
|
unsigned long counter, rxTimer;
|
|
float startTime, stopTime;
|
|
|
|
void setup(void)
|
|
{
|
|
|
|
Serial.begin(57600);
|
|
printf_begin();
|
|
printf("\n\rRF24/examples/GettingStarted/\n\r");
|
|
printf("ROLE: %s\n\r",role_friendly_name[role]);
|
|
printf("*** PRESS 'T' to begin transmitting to the other node\n\r");
|
|
|
|
radio.begin(); // Setup and configure rf radio
|
|
radio.setChannel(1);
|
|
radio.setPALevel(RF24_PA_MAX);
|
|
radio.setAutoAck(1); // Ensure autoACK is enabled
|
|
radio.setRetries(2,3); // Optionally, increase the delay between retries & # of retries
|
|
//radio.disableCRC();
|
|
radio.setCRCLength(RF24_CRC_8);
|
|
radio.openWritingPipe(pipes[1]);
|
|
radio.openReadingPipe(1,pipes[0]);
|
|
|
|
radio.startListening(); // Start listening
|
|
radio.printDetails(); // Dump the configuration of the rf unit for debugging
|
|
|
|
randomSeed(analogRead(0)); //Seed for random number generation
|
|
|
|
for(int i=0; i<32; i++){
|
|
data[i] = random(255); //Load the buffer with random data
|
|
}
|
|
radio.powerUp();
|
|
}
|
|
|
|
void loop(void){
|
|
|
|
|
|
//TX with pre-blocking writes
|
|
if(role == role_TX){
|
|
|
|
delay(1500);
|
|
|
|
printf("Initiating Basic Data Transfer\n\r");
|
|
|
|
|
|
float cycles = 10000;
|
|
|
|
startTime = millis();
|
|
|
|
for(int i=0; i<cycles; i++){
|
|
if(!radio.writeFast(&data,32)){
|
|
counter++;
|
|
}
|
|
}
|
|
stopTime = millis();
|
|
|
|
while(!radio.txStandBy()){ }
|
|
|
|
float numBytes = cycles * 32;
|
|
float rate = numBytes / (stopTime - startTime) / cycles;
|
|
|
|
|
|
printf("Transfer complete at "); Serial.print(rate); printf(" KB/s \n\r");
|
|
printf("%d of ",counter); Serial.print(cycles); printf(" Packets Failed to Send\n\r");
|
|
counter = 0;
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
if(role == role_RX){
|
|
while(radio.available()){
|
|
radio.read(&data,32);
|
|
counter++;
|
|
}
|
|
if(millis() - rxTimer > 1000){
|
|
rxTimer = millis();
|
|
// printf("Rx Rate: ");
|
|
// Serial.print(counter*32/1000);
|
|
// printf(" KB/s\n\r");
|
|
printf("Payload Count: %d \n\r", counter);
|
|
counter = 0;
|
|
}
|
|
|
|
}
|
|
|
|
//
|
|
// Change roles
|
|
//
|
|
|
|
if ( Serial.available() )
|
|
{
|
|
char c = toupper(Serial.read());
|
|
if ( c == 'T' && role == role_RX )
|
|
{
|
|
printf("*** CHANGING TO TRANSMIT ROLE -- PRESS 'R' TO SWITCH BACK\n\r");
|
|
radio.stopListening();
|
|
role = role_TX; // Become the primary transmitter (ping out)
|
|
//radio.openWritingPipe(pipes[0]);
|
|
//radio.openReadingPipe(1,pipes[1]);
|
|
}
|
|
else if ( c == 'R' && role == role_TX )
|
|
{
|
|
radio.startListening();
|
|
printf("*** CHANGING TO RECEIVE ROLE -- PRESS 'T' TO SWITCH BACK\n\r");
|
|
|
|
role = role_RX; // Become the primary receiver (pong back)
|
|
|
|
//radio.openWritingPipe(pipes[1]);
|
|
//radio.openReadingPipe(1,pipes[0]);
|
|
}
|
|
}
|
|
}
|
|
// vim:cin:ai:sts=2 sw=2 ft=cpp
|