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Due to HW limitation, we don't support this anymore. On c3, ADC2 under oneshot mode is not stable. However, you can enable CONFIG_ADC_ONESHOT_FORCE_USE_ADC2_ON_C3 to force use ADC2. Refer to errata to know more details: https://www.espressif.com/sites/default/files/documentation/esp32-s3_errata_en.pdf https://www.espressif.com/sites/default/files/documentation/esp32-c3_errata_en.pdf
80 lines
3.3 KiB
Plaintext
80 lines
3.3 KiB
Plaintext
menu "ADC and ADC Calibration"
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config ADC_ONESHOT_CTRL_FUNC_IN_IRAM
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bool "Place ISR version ADC oneshot mode read function into IRAM"
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default n
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help
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Place ISR version ADC oneshot mode read function into IRAM.
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config ADC_CONTINUOUS_ISR_IRAM_SAFE
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depends on SOC_ADC_DMA_SUPPORTED
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bool "ADC continuous mode driver ISR IRAM-Safe"
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default n
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select GDMA_ISR_IRAM_SAFE if SOC_ADC_DMA_SUPPORTED && SOC_GDMA_SUPPORTED
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help
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Ensure the ADC continuous mode ISR is IRAM-Safe. When enabled, the ISR handler
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will be available when the cache is disabled.
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menu "ADC Calibration Configurations"
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depends on IDF_TARGET_ESP32
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config ADC_CALI_EFUSE_TP_ENABLE
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bool "Use Two Point Values"
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default "y"
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help
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Some ESP32s have Two Point calibration values burned into eFuse BLOCK3.
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This option will allow the ADC calibration component to characterize the
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ADC-Voltage curve using Two Point values if they are available.
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config ADC_CALI_EFUSE_VREF_ENABLE
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bool "Use eFuse Vref"
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default "y"
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help
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Some ESP32s have Vref burned into eFuse BLOCK0. This option will allow
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the ADC calibration component to characterize the ADC-Voltage curve using
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eFuse Vref if it is available.
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config ADC_CALI_LUT_ENABLE
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bool "Use Lookup Tables"
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default "y"
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help
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This option will allow the ADC calibration component to use Lookup Tables
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to correct for non-linear behavior in 11db attenuation. Other attenuations
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do not exhibit non-linear behavior hence will not be affected by this option.
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endmenu
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config ADC_DISABLE_DAC_OUTPUT
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depends on SOC_DAC_SUPPORTED
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bool "Disable DAC when ADC2 is in use"
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default y
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help
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By default, this is set. The ADC oneshot driver will disable the output of the
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corresponding DAC channels:
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ESP32: IO25 and IO26
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ESP32S2: IO17 and IO18
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Disable this option so as to measure the output of DAC by internal ADC, for test usage.
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config ADC_CONTINUOUS_FORCE_USE_ADC2_ON_C3_S3
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depends on IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32S3
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bool "Force use ADC2 continumous mode on ESP32S3 or ESP32C3"
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default n
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help
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On ESP32C3 and ESP32S3, ADC2 Digital Controller is not stable. Therefore,
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ADC2 continuous mode is not suggested on ESP32S3 and ESP32C3
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If you stick to this, you can enable this option to force use ADC2 under above conditions.
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For more details, you can search for errata on espressif website.
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config ADC_ONESHOT_FORCE_USE_ADC2_ON_C3
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depends on IDF_TARGET_ESP32C3
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bool "Force use ADC2 oneshot mode on ESP32C3"
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default n
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help
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On ESP32C3, ADC2 Digital Controller is not stable. Therefore,
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ADC2 oneshot mode is not suggested on ESP32C3
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If you stick to this, you can enable this option to force use ADC2 under above conditions.
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For more details, you can search for errata on espressif website.
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endmenu
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