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Fix compilation warning #168

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Merged
merged 1 commit into from
Aug 25, 2019
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Fix compilation warning #168

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2 changes: 1 addition & 1 deletion cores/arduino/pulse.c
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ uint32_t pulseIn(uint32_t pin, uint32_t state, uint32_t timeout)
* No assembly required, no conversion of loop counts to times (which is
* worrisome in the presence of cache.)
*/
volatile uint32_t *port = &(PORT->Group[p.ulPort].IN.reg);
const volatile uint32_t *port = &(PORT->Group[p.ulPort].IN.reg);
uint32_t usCallStart; // microseconds at start of call, for timeout.
uint32_t usPulseStart; // microseconds at start of measured pulse.
usCallStart = usPulseStart = micros();
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