[riot-notifications] [RIOT-OS/RIOT] cpu/qn908x: ADC support (#15847)
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Sun Jan 24 23:35:23 CET 2021
@iosabi commented on this pull request.
> +config BOARD_HAS_ADC_PA06_CAP
+ Indicates that the board has an external capacitor connected to PA06
+ which shold be used to stabilize the ADC reference voltage.
+ This external capacitor is optional but it can reduce the noise of the
+ ADC sampling.
It looks like it does. I just tried:
rm tests/periph_adc/bin -r
make BOARD=qn9080dk -C tests/periph_adc
grep BOARD_HAS_XTAL32K tests/periph_adc -r
and the macro shows up in `tests/periph_adc/bin/qn9080dk/riotbuild/riotbuild.h`.
I honestly don't know if Kconfig or periph_cpu.h is the preferred way for this sort of config, but the "BOARD_HAS_..." macros where here so I added it here.
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