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adc_cali: supported channel compensation of adc calibration on esp32c6

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laokaiyao
2023-05-05 19:56:44 +08:00
parent 3550a2d185
commit ffb40a89d9
32 changed files with 366 additions and 57 deletions
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docs/en/api-reference/peripherals/adc_calibration.rst
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@@ -80,16 +80,27 @@ For those users who use their custom ADC calibration schemes, you could either m
ESP_ERROR_CHECK(adc_cali_delete_scheme_line_fitting(handle));
.. only:: esp32c3 or esp32s3
.. only:: esp32c3 or esp32s3 or esp32c6
ADC Calibration Curve Fitting Scheme
````````````````````````````````````
{IDF_TARGET_NAME} supports :c:macro:`ADC_CALI_SCHEME_VER_CURVE_FITTING` scheme. To create this scheme, set up :cpp:type:`adc_cali_curve_fitting_config_t` first.
- :cpp:member:`adc_cali_curve_fitting_config_t::unit_id`, the ADC that your ADC raw results are from.
- :cpp:member:`adc_cali_curve_fitting_config_t::atten`, ADC attenuation that your ADC raw results use.
- :cpp:member:`adc_cali_curve_fitting_config_t::bitwidth`, the ADC raw result bitwidth.
.. only:: not esp32c6
- :cpp:member:`adc_cali_curve_fitting_config_t::unit_id`, the ADC that your ADC raw results are from.
- :cpp:member:`adc_cali_curve_fitting_config_t::chan`, this member is kept here for extensibility. The calibration scheme only differs by attenuation, there's no difference among different channels.
- :cpp:member:`adc_cali_curve_fitting_config_t::atten`, ADC attenuation that your ADC raw results use.
- :cpp:member:`adc_cali_curve_fitting_config_t::bitwidth`, the ADC raw result bitwidth.
.. only:: esp32c6
- :cpp:member:`adc_cali_curve_fitting_config_t::unit_id`, the ADC that your ADC raw results are from.
- :cpp:member:`adc_cali_curve_fitting_config_t::chan`, the ADC channel that your ADC raw results are from. The calibration scheme not only differs by attenuation but also related to the channels.
- :cpp:member:`adc_cali_curve_fitting_config_t::atten`, ADC attenuation that your ADC raw results use.
- :cpp:member:`adc_cali_curve_fitting_config_t::bitwidth`, the ADC raw result bitwidth.
After setting up the configuration structure, call :cpp:func:`adc_cali_create_scheme_curve_fitting` to create a Curve Fitting calibration scheme handle. This function may fail due to reasons such as :c:macro:`ESP_ERR_INVALID_ARG` or :c:macro:`ESP_ERR_NO_MEM`. Especially, when the function return :c:macro:`ESP_ERR_NOT_SUPPORTED`, this means the calibration scheme required eFuse bits are not burnt on your board.