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feat(adc_cali): Add ADC calibration support for ESP32H2

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This commit is contained in:
gaoxu
2023-10-30 12:11:17 +08:00
parent 5bf1070143
commit 7f3221aa09
11 changed files with 251 additions and 18 deletions
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31
components/hal/esp32h2/include/hal/adc_ll.h
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@@ -592,6 +592,37 @@ static inline void adc_ll_calibration_init(adc_unit_t adc_n)
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_DREF_ADDR, 1);
}
/**
* Configure the registers for ADC calibration. You need to call the ``adc_ll_calibration_finish`` interface to resume after calibration.
*
* @note Different ADC units and different attenuation options use different calibration data (initial data).
*
* @param adc_n ADC index number.
* @param internal_gnd true: Disconnect from the IO port and use the internal GND as the calibration voltage.
* false: Use IO external voltage as calibration voltage.
*/
static inline void adc_ll_calibration_prepare(adc_unit_t adc_n, bool internal_gnd)
{
HAL_ASSERT(adc_n == ADC_UNIT_1);
/* Enable/disable internal connect GND (for calibration). */
if (internal_gnd) {
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_ENCAL_GND_ADDR, 1);
} else {
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_ENCAL_GND_ADDR, 0);
}
}
/**
* Resume register status after calibration.
*
* @param adc_n ADC index number.
*/
static inline void adc_ll_calibration_finish(adc_unit_t adc_n)
{
HAL_ASSERT(adc_n == ADC_UNIT_1);
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_ENCAL_GND_ADDR, 0);
}
/**
* Set the calibration result to ADC.
*