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pass thru gps test and cleaned up parsing code (interrupts dont work well, but we don't need them anyways)

This commit is contained in:
ladyada 2012-11-09 12:10:30 -05:00
parent bd05ebfce9
commit 0658de0de0
2 changed files with 33 additions and 44 deletions
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19
examples/flora_gpstest/flora_gpstest.ino Normal file
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@ -0,0 +1,19 @@
// test a passthru between USB and hardware serial
void setup() {
while (!Serial);
Serial.begin(9600);
Serial1.begin(9600);
}
void loop() {
if (Serial.available()) {
char c = Serial.read();
Serial1.write(c);
}
if (Serial1.available()) {
char c = Serial1.read();
Serial.write(c);
}
}

58
examples/flora_parsing/flora_parsing.ino
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@ -6,17 +6,17 @@
// desired.
//
// Tested and works great with the Adafruit Flora GPS module
// ------> http://adafruit.com/products/1059
// ------> http://adafruit.com/products/1059
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada
// and help support open source hardware & software! -ada
#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>
Adafruit_GPS GPS(&Serial1);
#include &lt;Adafruit_GPS.h&gt;
#include &lt;SoftwareSerial.h&gt;
Adafruit_GPS GPS(&amp;Serial1);
// 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 true
#define GPSECHO false
// this keeps track of whether we're using the interrupt
// off by default!
@ -44,68 +44,38 @@ void setup()
// 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
// the nice thing about this code is you can have a timer0 interrupt go off
// every 1 millisecond, and read data from the GPS for you. that makes the
// loop code a heck of a lot easier!
useInterrupt(true);
delay(1000);
// Ask for firmware version
Serial1.println(PMTK_Q_RELEASE);
}
// Interrupt is called once a millisecond, looks for any new GPS data, and stores it
SIGNAL(TIMER0_COMPA_vect) {
char c = GPS.read();
// if you want to debug, this is a good time to do it!
if (GPSECHO)
if (c) Serial.print(c);
}
void useInterrupt(boolean v) {
if (v) {
// Timer0 is already used for millis() - we'll just interrupt somewhere
// in the middle and call the "Compare A" function above
OCR0A = 0xAF;
TIMSK0 |= _BV(OCIE0A);
usingInterrupt = true;
} else {
// do not call the interrupt function COMPA anymore
TIMSK0 &= ~_BV(OCIE0A);
usingInterrupt = false;
}
}
uint32_t timer = millis();
void loop() // run over and over again
{
// in case you are not using the interrupt above, you'll
// need to 'hand query' the GPS, not suggested :(
if (! usingInterrupt) {
// 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)
// 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
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 millis() or timer wraps around, we'll just reset it
if (timer > millis()) timer = millis();
if (timer &gt; millis()) timer = millis();
// approximately every 2 seconds or so, print out the current stats
if (millis() - timer > 2000) {
if (millis() - timer &gt; 2000) {
timer = millis(); // reset the timer
Serial.print("\nTime: ");