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fix(u0): VREFINT_CAL value is not programmed during production #59

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Merged
merged 1 commit into from
Aug 26, 2024
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fix(u0): VREFINT_CAL value is not programmed during production #59

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7 changes: 7 additions & 0 deletions examples/Peripherals/ADC/Internal_channels/Internal_channels.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,13 @@ void setup() {

static int32_t readVref()
{
#ifdef STM32U0xx
/* On some devices Internal voltage reference calibration value not programmed
during production and return 0xFFFF. See errata sheet. */
if ((uint32_t)(*VREFINT_CAL_ADDR) == 0xFFFF) {
return 3300U;
}
#endif
#ifdef __LL_ADC_CALC_VREFANALOG_VOLTAGE
#ifdef STM32U5xx
return (__LL_ADC_CALC_VREFANALOG_VOLTAGE(ADC1, analogRead(AVREF), LL_ADC_RESOLUTION));
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