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esp_adc: add a kconfig to disable dac on certain adc IOs

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Added a kconfig option. By default, when using ADC oneshot
driver, it will disable
DAC channels:
- ESP32:   IO25, IO26
- ESP32S2: IO17, IO18
if ADC2 is in use.

You can disable this option, to measure DAC output, via internal ADC.
This is for test usage.
This commit is contained in:
Armando
2022-08-22 11:17:08 +08:00
parent 5e31d4bb2b
commit 236ba48efc
2 changed files with 16 additions and 4 deletions
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14
components/esp_adc/Kconfig
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@@ -41,7 +41,19 @@ menu "ADC and ADC Calibration"
This option will allow the ADC calibration component to use Lookup Tables
to correct for non-linear behavior in 11db attenuation. Other attenuations
do not exhibit non-linear behavior hence will not be affected by this option.
endmenu
config ADC_DISABLE_DAC_OUTPUT
depends on SOC_DAC_SUPPORTED
bool "Disable DAC when ADC2 is in use"
default y
help
By default, this is set. The ADC oneshot driver will disable the output of the
corresponding DAC channels:
ESP32: IO25 and IO26
ESP32S2: IO17 and IO18
Disable this option so as to measure the output of DAC by internal ADC, for test usage.
endmenu