[riot-notifications] [RIOT] [WIP] cpu/sam3x8e: Add pwm implementation (#3170)

A-Paul notifications at github.com
Mon Jun 8 18:02:00 CEST 2015


> +/*!
> + * Only handles one device with max. four channels.
> + *
> + * To ease initialisation the four channels (4-7) are controlled by a sync
> + * group. CH0 is master of sync group and inherently selected.
> + *
> + * - Selecting clock and mode.
> + * - Set period and other comparator paramters.
> + * - En/Disable.
> + *
> + * Duty-cycle update is selected individualy.
> + *
> + * \warning {Although channel 0 isn't routed to a pin, controlling th sync
> + * group means it MUST NOT used for other purposes, Channels 1-3 are still
> + * free usable}
> + * \todo { Use PWM_0_CHANNELS for selective initialisation }

Will be part of the next cleanup before further implementation.

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https://github.com/RIOT-OS/RIOT/pull/3170/files#r31930048
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