Added new example to go along with Getting Started tutorial blog post.
This commit is contained in:
maniacbug
parent
d92ac14f86
commit
3a2d94b698
|
|
@ -0,0 +1,227 @@
|
|||
/*
|
||||
Copyright (C) 2011 J. Coliz <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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* Example for Getting Started with nRF24L01+ radios.
|
||||
*
|
||||
* This is an example of how to use the RF24 class. Write this sketch to two
|
||||
* different nodes. Put one of the nodes into 'transmit' mode by connecting
|
||||
* with the serial monitor and sending a 'T'. The ping node sends the current
|
||||
* time to the pong node, which responds by sending the value back. The ping
|
||||
* node can then see how long the whole cycle took.
|
||||
*/
|
||||
|
||||
#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(9,10);
|
||||
|
||||
//
|
||||
// Topology
|
||||
//
|
||||
|
||||
// Radio pipe addresses for the 2 nodes to communicate.
|
||||
const uint64_t pipes[2] = { 0xF0F0F0F0E1LL, 0xF0F0F0F0D2LL };
|
||||
|
||||
//
|
||||
// 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_ping_out = 1, role_pong_back } role_e;
|
||||
|
||||
// The debug-friendly names of those roles
|
||||
const char* role_friendly_name[] = { "invalid", "Ping out", "Pong back"};
|
||||
|
||||
// The role of the current running sketch
|
||||
role_e role = role_pong_back;
|
||||
|
||||
void setup(void)
|
||||
{
|
||||
//
|
||||
// Print preamble
|
||||
//
|
||||
|
||||
Serial.begin(57600);
|
||||
printf_begin();
|
||||
printf("\n\rRF24/examples/pingpair/\n\r");
|
||||
printf("ROLE: %s\n\r",role_friendly_name[role]);
|
||||
printf("*** PRESS 'T' to begin transmitting to the other node\n\r");
|
||||
|
||||
//
|
||||
// Setup and configure rf radio
|
||||
//
|
||||
|
||||
radio.begin();
|
||||
|
||||
// optionally, increase the delay between retries & # of retries
|
||||
radio.setRetries(15,15);
|
||||
|
||||
// optionally, reduce the payload size. seems to
|
||||
// improve reliability
|
||||
radio.setPayloadSize(8);
|
||||
|
||||
//
|
||||
// Open pipes to other nodes for communication
|
||||
//
|
||||
|
||||
// This simple sketch opens two pipes for these two nodes to communicate
|
||||
// back and forth.
|
||||
// Open 'our' pipe for writing
|
||||
// Open the 'other' pipe for reading, in position #1 (we can have up to 5 pipes open for reading)
|
||||
|
||||
if ( role == role_ping_out )
|
||||
{
|
||||
radio.openWritingPipe(pipes[0]);
|
||||
radio.openReadingPipe(1,pipes[1]);
|
||||
}
|
||||
else
|
||||
{
|
||||
radio.openWritingPipe(pipes[1]);
|
||||
radio.openReadingPipe(1,pipes[0]);
|
||||
}
|
||||
|
||||
//
|
||||
// Start listening
|
||||
//
|
||||
|
||||
radio.startListening();
|
||||
|
||||
//
|
||||
// Dump the configuration of the rf unit for debugging
|
||||
//
|
||||
|
||||
radio.printDetails();
|
||||
}
|
||||
|
||||
void loop(void)
|
||||
{
|
||||
//
|
||||
// Ping out role. Repeatedly send the current time
|
||||
//
|
||||
|
||||
if (role == role_ping_out)
|
||||
{
|
||||
// First, stop listening so we can talk.
|
||||
radio.stopListening();
|
||||
|
||||
// Take the time, and send it. This will block until complete
|
||||
unsigned long time = millis();
|
||||
printf("Now sending %lu...",time);
|
||||
bool ok = radio.write( &time, sizeof(unsigned long) );
|
||||
|
||||
if (ok)
|
||||
printf("ok...");
|
||||
else
|
||||
printf("failed.\n\r");
|
||||
|
||||
// Now, continue listening
|
||||
radio.startListening();
|
||||
|
||||
// Wait here until we get a response, or timeout (250ms)
|
||||
unsigned long started_waiting_at = millis();
|
||||
bool timeout = false;
|
||||
while ( ! radio.available() && ! timeout )
|
||||
if (millis() - started_waiting_at > 200 )
|
||||
timeout = true;
|
||||
|
||||
// Describe the results
|
||||
if ( timeout )
|
||||
{
|
||||
printf("Failed, response timed out.\n\r");
|
||||
}
|
||||
else
|
||||
{
|
||||
// Grab the response, compare, and send to debugging spew
|
||||
unsigned long got_time;
|
||||
radio.read( &got_time, sizeof(unsigned long) );
|
||||
|
||||
// Spew it
|
||||
printf("Got response %lu, round-trip delay: %lu\n\r",got_time,millis()-got_time);
|
||||
}
|
||||
|
||||
// Try again 1s later
|
||||
delay(1000);
|
||||
}
|
||||
|
||||
//
|
||||
// Pong back role. Receive each packet, dump it out, and send it back
|
||||
//
|
||||
|
||||
if ( role == role_pong_back )
|
||||
{
|
||||
// if there is data ready
|
||||
if ( radio.available() )
|
||||
{
|
||||
// Dump the payloads until we've gotten everything
|
||||
unsigned long got_time;
|
||||
bool done = false;
|
||||
while (!done)
|
||||
{
|
||||
// Fetch the payload, and see if this was the last one.
|
||||
done = radio.read( &got_time, sizeof(unsigned long) );
|
||||
|
||||
// Spew it
|
||||
printf("Got payload %lu...",got_time);
|
||||
|
||||
// Delay just a little bit to let the other unit
|
||||
// make the transition to receiver
|
||||
delay(20);
|
||||
}
|
||||
|
||||
// First, stop listening so we can talk
|
||||
radio.stopListening();
|
||||
|
||||
// Send the final one back.
|
||||
radio.write( &got_time, sizeof(unsigned long) );
|
||||
printf("Sent response.\n\r");
|
||||
|
||||
// Now, resume listening so we catch the next packets.
|
||||
radio.startListening();
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// Change roles
|
||||
//
|
||||
|
||||
if ( Serial.available() )
|
||||
{
|
||||
char c = toupper(Serial.read());
|
||||
if ( c == 'T' && role == role_pong_back )
|
||||
{
|
||||
printf("*** CHANGING TO TRANSMIT ROLE -- PRESS 'R' TO SWITCH BACK\n\r");
|
||||
|
||||
// Become the primary transmitter (ping out)
|
||||
role = role_ping_out;
|
||||
radio.openWritingPipe(pipes[0]);
|
||||
radio.openReadingPipe(1,pipes[1]);
|
||||
}
|
||||
else if ( c == 'R' && role == role_ping_out )
|
||||
{
|
||||
printf("*** CHANGING TO RECEIVE ROLE -- PRESS 'T' TO SWITCH BACK\n\r");
|
||||
|
||||
// Become the primary receiver (pong back)
|
||||
role = role_pong_back;
|
||||
radio.openWritingPipe(pipes[1]);
|
||||
radio.openReadingPipe(1,pipes[0]);
|
||||
}
|
||||
}
|
||||
}
|
||||
// vim:cin:ai:sts=2 sw=2 ft=cpp
|
||||
|
|
@ -0,0 +1,219 @@
|
|||
PROJECT_NAME = $(PWD:B) ;
|
||||
PROJECT_DIR = . ;
|
||||
PROJECT_LIBS = SPI RF24 ;
|
||||
|
||||
F_CPU ?= 16000000 ;
|
||||
MCU = atmega328p ;
|
||||
PORTS = /dev/tty.usbserial-A600eHIs /dev/tty.usbserial-A40081RP /dev/tty.usbserial-A9007LmI ;
|
||||
OUT_DIR = $(F_CPU) ;
|
||||
|
||||
UPLOAD_RATE = 57600 ;
|
||||
AVRDUDE_PROTOCOL = stk500v1 ;
|
||||
COM = 33 ;
|
||||
|
||||
# Host-specific overrides for locations
|
||||
if $(OS) = MACOSX
|
||||
{
|
||||
ARDUINO_VERSION = 100 ;
|
||||
OLD_DIR = /opt/arduino-0021 ;
|
||||
AVR_TOOLS_PATH = $(OLD_DIR)/hardware/tools/avr/bin ;
|
||||
AVRDUDECONFIG_PATH = $(OLD_DIR)/hardware/tools/avr/etc ;
|
||||
ARDUINO_DIR = /opt/Arduino ;
|
||||
ARDUINO_AVR = /usr/lib/avr/include ;
|
||||
}
|
||||
|
||||
# Where is everything?
|
||||
ARDUINO_VERSION ?= 100 ;
|
||||
AVR_TOOLS_PATH ?= /usr/bin ;
|
||||
ARDUINO_DIR ?= /opt/arduino-00$(ARDUINO_VERSION) ;
|
||||
ARDUINO_AVR ?= $(ARDUINO_DIR)/hardware/tools/avr/avr/include/avr ;
|
||||
AVRDUDECONFIG_PATH ?= $(ARDUINO_DIR)/hardware/tools ;
|
||||
ARDUINO_CORE = $(ARDUINO_DIR)/hardware/arduino/cores/arduino $(ARDUINO_DIR)/hardware/arduino/variants/standard ;
|
||||
ARDUINO_LIB = $(ARDUINO_DIR)/libraries ;
|
||||
SKETCH_LIB = $(HOME)/Source/Arduino/libraries ;
|
||||
AVR_CC = $(AVR_TOOLS_PATH)/avr-gcc ;
|
||||
AVR_CXX = $(AVR_TOOLS_PATH)/avr-g++ ;
|
||||
AVR_LD = $(AVR_TOOLS_PATH)/avr-gcc ;
|
||||
AVR_OBJCOPY = $(AVR_TOOLS_PATH)/avr-objcopy ;
|
||||
AVRDUDE = $(AVR_TOOLS_PATH)/avrdude ;
|
||||
|
||||
DEFINES = F_CPU=$(F_CPU)L ARDUINO=$(ARDUINO_VERSION) VERSION_H ;
|
||||
CTUNING = -ffunction-sections -fdata-sections ;
|
||||
CXXTUNING = -fno-exceptions -fno-strict-aliasing ;
|
||||
CFLAGS = -Os -Wall -Wextra -mmcu=$(MCU) $(CTUNING) ;
|
||||
CXXFLAGS = $(CFLAGS) $(CXXTUNING) ;
|
||||
LDFLAGS = -Os -lm -Wl,--gc-sections -mmcu=atmega328p ;
|
||||
|
||||
# Search everywhere for headers
|
||||
HDRS = $(PROJECT_DIR) $(ARDUINO_AVR) $(ARDUINO_CORE) [ GLOB $(ARDUINO_LIB) $(SKETCH_LIB) : [^.]* ] ;
|
||||
|
||||
# Grab everything from the core directory
|
||||
CORE_MODULES = [ GLOB $(ARDUINO_CORE) : *.c *.cpp ] ;
|
||||
|
||||
# Grab everything from libraries. To avoid this "grab everything" behaviour, you
|
||||
# can specify specific modules to pick up in PROJECT_MODULES
|
||||
LIB_MODULES = [ GLOB $(ARDUINO_LIB)/$(PROJECT_LIBS) $(SKETCH_LIB)/$(PROJECT_LIBS) : *.cpp ] ;
|
||||
|
||||
# In addition to explicitly-specified program modules, pick up anything from the current
|
||||
# dir.
|
||||
PROJECT_MODULES += [ GLOB $(PROJECT_DIR) : *.c *.cpp *.pde ] ;
|
||||
|
||||
# Shortcut for the out files
|
||||
OUT = $(OUT_DIR)/$(PROJECT_NAME) ;
|
||||
|
||||
# AvrDude setup
|
||||
AVRDUDE_FLAGS = -V -F -D -C $(AVRDUDECONFIG_PATH)/avrdude.conf -p $(MCU) -c $(AVRDUDE_PROTOCOL) -b $(UPLOAD_RATE) ;
|
||||
|
||||
rule GitVersion
|
||||
{
|
||||
Always $(<) ;
|
||||
Depends all : $(<) ;
|
||||
}
|
||||
|
||||
actions GitVersion
|
||||
{
|
||||
echo "const char program_version[] = \"\\" > $(<)
|
||||
git log -1 --pretty=format:%h >> $(<)
|
||||
echo "\";" >> $(<)
|
||||
}
|
||||
|
||||
GitVersion version.h ;
|
||||
|
||||
rule AvrCc
|
||||
{
|
||||
Depends $(<) : $(>) ;
|
||||
Depends $(<) : $(<:D) ;
|
||||
Clean clean : $(<) ;
|
||||
|
||||
CCHDRS on $(<) = [ on $(<) FIncludes $(HDRS) ] ;
|
||||
CCDEFS on $(<) = [ on $(<) FDefines $(DEFINES) ] ;
|
||||
}
|
||||
|
||||
actions AvrCc
|
||||
{
|
||||
$(AVR_CC) -c -o $(<) $(CCHDRS) $(CCDEFS) $(CFLAGS) $(>)
|
||||
}
|
||||
|
||||
rule AvrC++
|
||||
{
|
||||
Depends $(<) : $(>) ;
|
||||
Depends $(<) : $(<:D) ;
|
||||
Clean clean : $(<) ;
|
||||
|
||||
CCHDRS on $(<) = [ on $(<) FIncludes $(HDRS) ] ;
|
||||
CCDEFS on $(<) = [ on $(<) FDefines $(DEFINES) ] ;
|
||||
}
|
||||
|
||||
actions AvrC++
|
||||
{
|
||||
$(AVR_CXX) -c -o $(<) $(CCHDRS) $(CCDEFS) $(CXXFLAGS) $(>)
|
||||
}
|
||||
|
||||
rule Pde
|
||||
{
|
||||
Depends $(<) : $(>) ;
|
||||
Depends $(<) : $(<:D) ;
|
||||
Clean clean : $(<) ;
|
||||
|
||||
}
|
||||
|
||||
if ( $(ARDUINO_VERSION) < 100 )
|
||||
{
|
||||
actions Pde
|
||||
{
|
||||
echo "#include <WProgram.h>" > $(<)
|
||||
echo "#line 1 \"$(>)\"" >> $(<)
|
||||
cat $(>) >> $(<)
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
actions Pde
|
||||
{
|
||||
echo "#include <Arduino.h>" > $(<)
|
||||
echo "#line 1 \"$(>)\"" >> $(<)
|
||||
cat $(>) >> $(<)
|
||||
}
|
||||
}
|
||||
|
||||
rule AvrPde
|
||||
{
|
||||
local _CPP = $(OUT_DIR)/$(_I:B).cpp ;
|
||||
Pde $(_CPP) : $(>) ;
|
||||
AvrC++ $(<) : $(_CPP) ;
|
||||
}
|
||||
|
||||
rule AvrObject
|
||||
{
|
||||
switch $(>:S)
|
||||
{
|
||||
case .c : AvrCc $(<) : $(>) ;
|
||||
case .cpp : AvrC++ $(<) : $(>) ;
|
||||
case .pde : AvrPde $(<) : $(>) ;
|
||||
case .ino : AvrPde $(<) : $(>) ;
|
||||
}
|
||||
}
|
||||
|
||||
rule AvrObjects
|
||||
{
|
||||
for _I in $(<)
|
||||
{
|
||||
AvrObject $(OUT_DIR)/$(_I:B).o : $(_I) ;
|
||||
}
|
||||
}
|
||||
|
||||
rule AvrMainFromObjects
|
||||
{
|
||||
Depends $(<) : $(>) ;
|
||||
Depends $(<) : $(<:D) ;
|
||||
MkDir $(<:D) ;
|
||||
Depends all : $(<) ;
|
||||
Clean clean : $(<) ;
|
||||
}
|
||||
|
||||
actions AvrMainFromObjects
|
||||
{
|
||||
$(AVR_LD) $(LDFLAGS) -o $(<) $(>)
|
||||
}
|
||||
|
||||
rule AvrMain
|
||||
{
|
||||
AvrMainFromObjects $(<) : $(OUT_DIR)/$(>:B).o ;
|
||||
AvrObjects $(>) ;
|
||||
}
|
||||
|
||||
rule AvrHex
|
||||
{
|
||||
Depends $(<) : $(>) ;
|
||||
Depends $(<) : $(<:D) ;
|
||||
Depends hex : $(<) ;
|
||||
Clean clean : $(<) ;
|
||||
}
|
||||
|
||||
actions AvrHex
|
||||
{
|
||||
$(AVR_OBJCOPY) -O ihex -R .eeprom $(>) $(<)
|
||||
}
|
||||
|
||||
rule AvrUpload
|
||||
{
|
||||
Depends $(1) : $(2) ;
|
||||
Depends $(2) : $(3) ;
|
||||
NotFile $(1) ;
|
||||
Always $(1) ;
|
||||
Always $(2) ;
|
||||
AvrUploadAction $(2) : $(3) ;
|
||||
}
|
||||
|
||||
actions AvrUploadAction
|
||||
{
|
||||
$(AVRDUDE) $(AVRDUDE_FLAGS) -P $(<) $(AVRDUDE_WRITE_FLASH) -U flash:w:$(>):i
|
||||
}
|
||||
|
||||
AvrMain $(OUT).elf : $(CORE_MODULES) $(LIB_MODULES) $(PROJECT_MODULES) ;
|
||||
AvrHex $(OUT).hex : $(OUT).elf ;
|
||||
|
||||
AvrUpload p6 : /dev/tty.usbserial-A600eHIs : $(OUT).hex ;
|
||||
AvrUpload p4 : /dev/tty.usbserial-A40081RP : $(OUT).hex ;
|
||||
AvrUpload p9 : /dev/tty.usbserial-A9007LmI : $(OUT).hex ;
|
||||
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
/*
|
||||
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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @file printf.h
|
||||
*
|
||||
* Setup necessary to direct stdout to the Arduino Serial library, which
|
||||
* enables 'printf'
|
||||
*/
|
||||
|
||||
#ifndef __PRINTF_H__
|
||||
#define __PRINTF_H__
|
||||
|
||||
int serial_putc( char c, FILE * )
|
||||
{
|
||||
Serial.write( c );
|
||||
|
||||
return c;
|
||||
}
|
||||
|
||||
void printf_begin(void)
|
||||
{
|
||||
fdevopen( &serial_putc, 0 );
|
||||
}
|
||||
|
||||
#endif // __PRINTF_H__
|
||||
Loading…
Reference in New Issue