[riot-notifications] [RIOT-OS/RIOT] cpu/qn908x: ADC support (#15847)
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Sun Jan 24 23:18:29 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.
Note that this block doesn't have a `prompt`, only a config so this doesn't show up in the user menu but it can be defined from the board's Kconfig. I did something similar for the clocks (whether there's a crystal on the board or not) although in that case there were Kconfig user prompts that depend on some of those settings.
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