Raspberry Pi support
Added support for hardware SPI on RPI per jscrane fork: - Fixed a few bugs with single SPI transfers - Aligned with optimized RF24 library fork - Updated bmc2835 files per http://www.airspayce.com/mikem/bcm2835/index.html - Merged bcm files with changes from https://github.com/farconada/RF24Network - Added example files - Added setup info to readme
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TMRh20
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#############################################################################
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#
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# Makefile for librf24 examples on Raspberry Pi
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#
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# License: GPL (General Public License)
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# Author: gnulnulf <arco@appeltaart.mine.nu>
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# Date: 2013/02/07 (version 1.0)
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#
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# Description:
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# ------------
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# use make all and make install to install the examples
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# You can change the install directory by editing the prefix line
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#
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prefix := /usr/local
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# The recommended compiler flags for the Raspberry Pi
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CCFLAGS=-Ofast -mfpu=vfp -mfloat-abi=hard -march=armv6zk -mtune=arm1176jzf-s
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#CCFLAGS=
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# define all programs
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PROGRAMS = rpi-hub scanner
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SOURCES = ${PROGRAMS:=.cpp}
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all: ${PROGRAMS}
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${PROGRAMS}: ${SOURCES}
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g++ ${CCFLAGS} -Wall -I../ -lrf24-bcm $@.cpp -o $@
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clean:
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rm -rf $(PROGRAMS)
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install: all
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test -d $(prefix) || mkdir $(prefix)
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test -d $(prefix)/bin || mkdir $(prefix)/bin
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for prog in $(PROGRAMS); do \
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install -m 0755 $$prog $(prefix)/bin; \
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done
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.PHONY: install
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/*
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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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* 03/17/2013 : Charles-Henri Hallard (http://hallard.me)
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* Modified to use with Arduipi board http://hallard.me/arduipi
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* Changed to use modified bcm2835 and RF24 library
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*
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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] =
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{ 0xF0F0F0F0D2LL, 0xF0F0F0F0E1LL,
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0xF0F0F0F0E2LL, 0xF0F0F0F0E3LL,
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0xF0F0F0F0F1, 0xF0F0F0F0F2
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};
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// CE Pin, CSN Pin, SPI Speed
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// Setup for GPIO 22 CE and GPIO 25 CSN with SPI Speed @ 1Mhz
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//RF24 radio(RPI_V2_GPIO_P1_22, RPI_V2_GPIO_P1_18, BCM2835_SPI_SPEED_1MHZ);
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// Setup for GPIO 22 CE and CE0 CSN with SPI Speed @ 4Mhz
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//RF24 radio(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_4MHZ);
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// Setup for GPIO 22 CE and CE1 CSN with SPI Speed @ 8Mhz
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RF24 radio(RPI_V2_GPIO_P1_15, RPI_V2_GPIO_P1_26, BCM2835_SPI_SPEED_8MHZ);
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int main(int argc, char** argv)
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{
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uint8_t len;
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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("Output below : \n");
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delay(1);
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while(1)
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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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{
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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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{
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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",len,receivePayload,pipe);
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}
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else
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{
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printf("\n");
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}
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pipe++;
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// reset pipe to 0
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if ( pipe > 6 )
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pipe = 0;
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}
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delayMicroseconds(20);
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}
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return 0;
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}
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@@ -0,0 +1,147 @@
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/*
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Copyright (C) 2011 J. Coliz <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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03/17/2013 : Charles-Henri Hallard (http://hallard.me)
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Modified to use with Arduipi board http://hallard.me/arduipi
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Changed to use modified bcm2835 and RF24 library
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*/
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/**
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* Channel scanner
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*
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* Example to detect interference on the various channels available.
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* This is a good diagnostic tool to check whether you're picking a
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* good channel for your application.
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*
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* Inspired by cpixip.
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* See http://arduino.cc/forum/index.php/topic,54795.0.html
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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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//
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// Hardware configuration
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//
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// CE Pin, CSN Pin, SPI Speed
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// Setup for GPIO 22 CE and GPIO 25 CSN with SPI Speed @ 1Mhz
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//RF24 radio(RPI_V2_GPIO_P1_22, RPI_V2_GPIO_P1_18, BCM2835_SPI_SPEED_1MHZ);
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// Setup for GPIO 22 CE and CE0 CSN with SPI Speed @ 4Mhz
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//RF24 radio(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_4MHZ);
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// Setup for GPIO 22 CE and CE1 CSN with SPI Speed @ 8Mhz
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RF24 radio(RPI_V2_GPIO_P1_15, RPI_V2_GPIO_P1_26, BCM2835_SPI_SPEED_8MHZ);
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//
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// Channel info
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//
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//const uint8_t num_channels = 128;
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const uint8_t num_channels = 120;
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uint8_t values[num_channels];
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const int num_reps = 100;
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int reset_array=0;
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int main(int argc, char** argv)
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{
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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("RF24/examples/scanner/\n");
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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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radio.setAutoAck(false);
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// Get into standby mode
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radio.startListening();
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radio.stopListening();
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radio.printDetails();
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// Print out header, high then low digit
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int i = 0;
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while ( i < num_channels )
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{
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printf("%x",i>>4);
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++i;
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}
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printf("\n");
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i = 0;
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while ( i < num_channels )
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{
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printf("%x",i&0xf);
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++i;
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}
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printf("\n");
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// forever loop
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while(1)
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{
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if ( reset_array == 1 )
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{
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// Clear measurement values
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memset(values,0,sizeof(values));
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printf("\n");
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}
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// Scan all channels num_reps times
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int i = num_channels;
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while (i--)
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{
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// Select this channel
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radio.setChannel(i);
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// Listen for a little
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radio.startListening();
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delayMicroseconds(128);
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//radio.stopListening();
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// Did we get a carrier?
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if ( radio.testCarrier() )
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++values[i];
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if ( values[i] == 0xf )
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{
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reset_array = 2;
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}
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radio.stopListening();
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}
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// Print out channel measurements, clamped to a single hex digit
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i = 0;
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while ( i < num_channels )
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{
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printf("%x",min(0xf,(values[i]&0xf)));
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++i;
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}
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printf("\n");
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}
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return 0;
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}
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// vim:ai:cin:sts=2 sw=2 ft=cpp
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