[embassy-stm32] add PWM multi channel waveform generation using DMA burst mode #4232
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RaulIQ
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RaulIQ
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This PR adds the waveform_up_multi_channel method, enabling PWM waveform generation using DMA burst transfers triggered by timer update events (UEV).
DMA operates through the DMAR register using configured DBA/DBL to update multiple CCRx registers in one transfer.