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https://github.com/digistump/DigistumpArduino.git
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120 lines
2.7 KiB
C++
120 lines
2.7 KiB
C++
/*
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*
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* Filename : rpi-hub.cpp
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*
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* This program makes the RPi as a hub listening to all six pipes from the remote sensor nodes ( usually Arduino )
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* and will return the packet back to the sensor on pipe0 so that the sender can calculate the round trip delays
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* when the payload matches.
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*
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* I encounter that at times, it also receive from pipe7 ( or pipe0 ) with content of FFFFFFFFF that I will not sent
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* back to the sender
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*
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* Refer to RF24/examples/rpi_hub_arduino/ for the corresponding Arduino sketches to work with this code.
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*
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*
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* CE is not used and CSN is GPIO25 (not pinout)
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*
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* Refer to RPi docs for GPIO numbers
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*
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* Author : Stanley Seow
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* e-mail : stanleyseow@gmail.com
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* date : 6th Mar 2013
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*
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*/
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#include <cstdlib>
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#include <iostream>
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#include "../RF24.h"
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using namespace std;
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// Radio pipe addresses for the 2 nodes to communicate.
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// First pipe is for writing, 2nd, 3rd, 4th, 5th & 6th is for reading...
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const uint64_t pipes[6] = { 0xF0F0F0F0D2LL, 0xF0F0F0F0E1LL, 0xF0F0F0F0E2LL, 0xF0F0F0F0E3LL, 0xF0F0F0F0F1, 0xF0F0F0F0F2 };
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// CE and CSN pins On header using GPIO numbering (not pin numbers)
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RF24 radio("/dev/spidev0.0",8000000,25); // Setup for GPIO 25 CSN
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void setup(void)
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{
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//
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// Refer to RF24.h or nRF24L01 DS for settings
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radio.begin();
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radio.enableDynamicPayloads();
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radio.setAutoAck(1);
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radio.setRetries(15,15);
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radio.setDataRate(RF24_1MBPS);
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radio.setPALevel(RF24_PA_MAX);
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radio.setChannel(76);
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radio.setCRCLength(RF24_CRC_16);
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// Open 6 pipes for readings ( 5 plus pipe0, also can be used for reading )
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radio.openWritingPipe(pipes[0]);
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radio.openReadingPipe(1,pipes[1]);
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radio.openReadingPipe(2,pipes[2]);
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radio.openReadingPipe(3,pipes[3]);
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radio.openReadingPipe(4,pipes[4]);
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radio.openReadingPipe(5,pipes[5]);
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//
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// Start listening
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//
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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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printf("\n\rOutput below : \n\r");
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usleep(1000);
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}
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void loop(void)
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{
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char receivePayload[32];
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uint8_t pipe = 1;
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// Start listening
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radio.startListening();
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while ( radio.available(&pipe) ) {
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uint8_t len = radio.getDynamicPayloadSize();
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radio.read( receivePayload, len );
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// Display it on screen
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printf("Recv: size=%i payload=%s pipe=%i",len,receivePayload,pipe);
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// Send back payload to sender
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radio.stopListening();
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// if pipe is 7, do not send it back
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if ( pipe != 7 ) {
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radio.write(receivePayload,len);
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receivePayload[len]=0;
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printf("\t Send: size=%i payload=%s pipe:%i\n\r",len,receivePayload,pipe);
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} else {
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printf("\n\r");
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}
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pipe++;
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// reset pipe to 0
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if ( pipe > 6 ) pipe = 0;
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}
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usleep(20);
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}
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int main(int argc, char** argv)
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{
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setup();
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while(1)
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loop();
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return 0;
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}
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