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added wrapping fix for timer

This commit is contained in:
Ladyada 2012-04-16 16:28:16 -04:00
parent 0d52221ff1
commit df8764f196
1 changed files with 5 additions and 2 deletions
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7
examples/parsing/parsing.pde
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@ -94,7 +94,7 @@ void useInterrupt(boolean v) {
} }
} }
uint16_t timer = millis(); uint32_t timer = millis();
void loop() // run over and over again void loop() // run over and over again
{ {
// in case you are not using the interrupt above, you'll // in case you are not using the interrupt above, you'll
@ -119,7 +119,10 @@ void loop() // run over and over again
if (!GPS.parse(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 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();
// approximately every 2 seconds or so, print out the current stats // approximately every 2 seconds or so, print out the current stats
if (millis() - timer > 2000) { if (millis() - timer > 2000) {
timer = millis(); // reset the timer timer = millis(); // reset the timer