Bonjour !
Alors je vous explique mon soucis, j'ai un arduino uno et un GPS Ultimate de chez Adafruit et j'essaye de les utiliser en mettant le GPS et l'arduino en veille.
// Test code for Adafruit Flora GPS modules
//
// This code shows how to listen to the GPS module in an interrupt
// which allows the program to have more 'freedom' - just parse
// when a new NMEA sentence is available! Then access data when
// desired.
//
// Tested and works great with the Adafruit Flora GPS module
// ------> http://adafruit.com/products/1059
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada
#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>
#include <avr/sleep.h>
#include <avr/wdt.h>
#include <avr/power.h>
#include <avr/interrupt.h>
volatile int f_wdt = 0;
SoftwareSerial mySerial(3, 2);
Adafruit_GPS GPS(&mySerial);
// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
// Set to 'true' if you want to debug and listen to the raw GPS sentences
#define GPSECHO false
// this keeps track of whether we're using the interrupt
// off by default!
boolean usingInterrupt = false;
void setup()
{
// connect at 115200 so we can read the GPS fast enough and echo without dropping chars
// also spit it out
Serial.begin(115200);
Serial.println("Adafruit GPS library basic test!");
// 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
GPS.begin(9600);
// uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
//GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
// uncomment this line to turn on only the "minimum recommended" data
GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
// For parsing data, we don't suggest using anything but either RMC only or RMC+GGA since
// the parser doesn't care about other sentences at this time
// Set the update rate
GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ); // 100 mHz update rate
//GPS.sendCommand(PMTK_API_SET_FIX_CTL_1HZ);
// For the parsing code to work nicely and have time to sort thru the data, and
// print it out we don't suggest using anything higher than 1 Hz
// Request updates on antenna status, comment out to keep quiet
GPS.sendCommand(PGCMD_ANTENNA);
delay(1000);
// Ask for firmware version
mySerial.println(PMTK_Q_RELEASE);
noInterrupts();
setup_watchdog(8); // approximately 4s sleep
// Enable interrupts again.
interrupts();
}
int flag = 0;
void loop() // run over and over again
{ // read data from the GPS in the 'main loop'
char c = GPS.read();
// if you want to debug, this is a good time to do it!
if (GPSECHO)
if (c) Serial.print(c);
// if a sentence is received, we can check the checksum, parse it...
if (GPS.newNMEAreceived()) {
// a tricky thing here is if we print the NMEA sentence, or data
// we end up not listening and catching other sentences!
// so be very wary if using OUTPUT_ALLDATA and trytng to print out data
//Serial.println(GPS.lastNMEA()); // this also sets the newNMEAreceived() flag to false
if (!GPS.parse(GPS.lastNMEA())) // this also sets the newNMEAreceived() flag to false
return; // we can fail to parse a sentence in which case we should just wait for another
if(GPS.fix){
Serial.print("\nTime: ");
Serial.print(GPS.hour, DEC); Serial.print(':');
Serial.print(GPS.minute, DEC); Serial.print(':');
Serial.print(GPS.seconds, DEC); Serial.print('.');
Serial.println(GPS.milliseconds);
Serial.print("Date: ");
Serial.print(GPS.day, DEC); Serial.print('/');
Serial.print(GPS.month, DEC); Serial.print("/20");
Serial.println(GPS.year, DEC);
Serial.print("Fix: "); Serial.print((int)GPS.fix);
Serial.print(" quality: "); Serial.println((int)GPS.fixquality);
Serial.print("Location: ");
Serial.print(GPS.latitude, 4); Serial.print(GPS.lat);
Serial.print(", ");
Serial.print(GPS.longitude, 4); Serial.println(GPS.lon);
Serial.print("Speed (knots): "); Serial.println(GPS.speed);
Serial.print("Angle: "); Serial.println(GPS.angle);
Serial.print("Altitude: "); Serial.println(GPS.altitude);
Serial.print("Satellites: "); Serial.println((int)GPS.satellites);
flag = 1;
}
}
//delay(2000);
if(flag == 1) { flag = 0; /*while(!GPS.standby()) {}*/
mySerial.println("$PMTK161,0*28");
Serial.print("Standby !");
delay(4000);
// La veille !!
//system_sleep();
Serial.print("Wake up !");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
mySerial.println(" ");
}
}
void system_sleep() {
set_sleep_mode(SLEEP_MODE_PWR_DOWN); // sleep mode is set here
sleep_enable();
sleep_mode(); // System sleeps here
sleep_disable(); // System continues execution here when watchdog timed out
}
// 0=16ms, 1=32ms,2=64ms,3=128ms,4=250ms,5=500ms
// 6=1 sec,7=2 sec, 8=4 sec, 9= 8sec
void setup_watchdog(int ii) {
byte bb;
int ww;
if (ii > 9 ) ii=9;
bb=ii & 7;
if (ii > 7) bb|= (1<<5);
bb|= (1<<WDCE);
ww=bb;
// Clear the reset flag
MCUSR &= ~(1<<WDRF);
// start timed sequence
WDTCSR |= (1<<WDCE) | (1<<WDE);
// set new watchdog timeout value
WDTCSR = bb;
WDTCSR |= _BV(WDIE);
}
// Watchdog Interrupt Service / is executed when watchdog timed out
ISR(WDT_vect) {
f_wdt ++; // set global flag
}
Donc ce code fonctionne, le GPS se met en veille, on attend 4 sec et on le réveille pour travailler.
Mais quand j'active la veille de l'arduino c'est le drame. Au mieux le GPS me donne une première donnée et après le sleep plus rien. C'est rageant je n'en comprend pas la cause. C'est un genre d'incompatibilité ou j'ai codé avec des moufles ?
Merci d'avance pour l'aide que vous m'apporterez, je suis là pour toute question !