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feat(adc): supported adc calibration on esp32c5

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Armando
2024-12-17 16:03:35 +08:00
committed by Armando (Dou Yiwen)
parent 3bdab3a191
commit b963c0f013
11 changed files with 318 additions and 88 deletions
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60
components/hal/esp32c5/include/hal/adc_ll.h
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@@ -788,6 +788,66 @@ static inline adc_atten_t adc_ll_get_atten(adc_unit_t adc_n, adc_channel_t chann
return (adc_atten_t)APB_SARADC.saradc_onetime_sample.saradc_saradc_onetime_atten;
}
/*---------------------------------------------------------------
Calibration
---------------------------------------------------------------*/
/**
* @brief Set common calibration configuration. Should be shared with other parts (PWDET).
*/
__attribute__((always_inline))
static inline void adc_ll_calibration_init(adc_unit_t adc_n)
{
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_DREF_ADDR, 4);
}
/**
* 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)
{
/* 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)
{
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_ENCAL_GND_ADDR, 0);
}
/**
* Set the calibration result to ADC.
*
* @note Different ADC units and different attenuation options use different calibration data (initial data).
*
* @param adc_n ADC index number.
*/
__attribute__((always_inline))
static inline void adc_ll_set_calibration_param(adc_unit_t adc_n, uint32_t param)
{
uint8_t msb = param >> 8;
uint8_t lsb = param & 0xFF;
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_INITIAL_CODE_HIGH_ADDR, msb);
REGI2C_WRITE_MASK(I2C_SAR_ADC, ADC_SAR1_INITIAL_CODE_LOW_ADDR, lsb);
}
#ifdef __cplusplus
}
#endif