adding volatile to value where ADC output is stored to prevent compil…

…er from code optimization which lead for wrong value returned by function (#29) Co-authored-by: KajotSoft <[email protected]>
h2zero · Nov 29, 2023 · 1d005bd · 1d005bd
1 parent b9de789
commit 1d005bd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cores/nRF5/wiring_analog_nRF52.c b/cores/nRF5/wiring_analog_nRF52.c
@@ -106,7 +106,7 @@ uint32_t analogRead( uint32_t ulPin )
  uint32_t pin = SAADC_CH_PSELP_PSELP_NC;
  uint32_t saadcResolution;
  uint32_t resolution;
- int16_t value = 0;
+ volatile int16_t value = 0;
 
  if (ulPin >= PINS_COUNT) {
  return 0;