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adc: fixed the issue that multiply overflow before type expand

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morris
2023-06-06 14:14:45 +08:00
parent 4bc762621d
commit a9d12c0fe9
3 changed files with 4 additions and 11 deletions
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2
components/esp_adc/deprecated/esp32c3/esp_adc_cal_legacy.c
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@@ -163,7 +163,7 @@ uint32_t esp_adc_cal_raw_to_voltage(uint32_t adc_reading, const esp_adc_cal_char
assert(chars != NULL);
int32_t error = 0;
uint64_t v_cali_1 = adc_reading * chars->coeff_a / coeff_a_scaling;
uint64_t v_cali_1 = (uint64_t)adc_reading * chars->coeff_a / coeff_a_scaling;
esp_adc_error_calc_param_t param = {
.v_cali_input = v_cali_1,
.term_num = (chars->atten == 3) ? 5 : 3,