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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/esp32s3/esp_adc_cal_legacy.c
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@@ -167,7 +167,7 @@ uint32_t esp_adc_cal_raw_to_voltage(uint32_t adc_reading, const esp_adc_cal_char
uint64_t v_cali_1 = 0;
//raw * gradient * 1000000
v_cali_1 = adc_reading * chars->coeff_a;
v_cali_1 = (uint64_t)adc_reading * chars->coeff_a;
//convert to real number
v_cali_1 = v_cali_1 / coeff_a_scaling;
ESP_LOGV(LOG_TAG, "v_cali_1 is %llu", v_cali_1);