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Fixed unused variables warnings and indentation

This commit is contained in:
Cristian Maglie 2015-05-29 20:01:31 +02:00
parent b7855ab7e1
commit 64dd45c3ce
1 changed files with 9 additions and 12 deletions
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21
cores/arduino/wiring_pulse.c
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@ -40,16 +40,14 @@ unsigned long pulseIn(uint8_t pin, uint8_t state, unsigned long timeout)
uint8_t bit = digitalPinToBitMask(pin);
uint8_t port = digitalPinToPort(pin);
uint8_t stateMask = (state ? bit : 0);
unsigned long width = 0; // keep initialization out of time critical area
// convert the timeout from microseconds to a number of times through
// the initial loop; it takes approximately 16 clock cycles per iteration
unsigned long numloops = 0;
unsigned long maxloops = microsecondsToClockCycles(timeout)/16;
width = countPulseASM(portInputRegister(port), bit, stateMask, maxloops);
unsigned long width = countPulseASM(portInputRegister(port), bit, stateMask, maxloops);
//prevent clockCyclesToMicroseconds to return bogus values if countPulseASM timed out
// prevent clockCyclesToMicroseconds to return bogus values if countPulseASM timed out
if (width)
return clockCyclesToMicroseconds(width * 16 + 16);
else
@ -72,7 +70,6 @@ unsigned long pulseInLong(uint8_t pin, uint8_t state, unsigned long timeout)
uint8_t bit = digitalPinToBitMask(pin);
uint8_t port = digitalPinToPort(pin);
uint8_t stateMask = (state ? bit : 0);
unsigned long width = 0; // keep initialization out of time critical area
// convert the timeout from microseconds to a number of times through
// the initial loop; it takes 16 clock cycles per iteration.
@ -89,11 +86,11 @@ unsigned long pulseInLong(uint8_t pin, uint8_t state, unsigned long timeout)
if (numloops++ == maxloops)
return 0;
unsigned long start = micros();
// wait for the pulse to stop
while ((*portInputRegister(port) & bit) == stateMask) {
if (numloops++ == maxloops)
return 0;
}
return micros() - start;
unsigned long start = micros();
// wait for the pulse to stop
while ((*portInputRegister(port) & bit) == stateMask) {
if (numloops++ == maxloops)
return 0;
}
return micros() - start;
}