Add STM32 PWM + DMA ws2812 driver#55
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petejohanson wants to merge 2 commits intozmkfirmware:v4.1.0+zmk-fixesfrom
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Add STM32 PWM + DMA ws2812 driver#55petejohanson wants to merge 2 commits intozmkfirmware:v4.1.0+zmk-fixesfrom
petejohanson wants to merge 2 commits intozmkfirmware:v4.1.0+zmk-fixesfrom
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Extend the PWM API with optional API functions for enabling DMA requests Possible solution for zephyrproject-rtos#88670 Signed-off-by: Vincent Surkijn <vincent.surkijn@siemens.com>
Implement an LED strip driver for WS2812 and and compatible LEDs using DMA to load compare values for the 0/1 bits for that protocol. Signed-off-by: Peter Johanson <peter@peterjohanson.com>
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This cherry picks the upstream work from zephyrproject-rtos#88671 and adds an STM32 PWM + DMA led_strip driver for the ws2812 family of LEDs.
This has been tested on wb55rg, f411ce, and g0b1 without any issues. Will work to get this upstreamed, another contributor may actually lead the work to integrate into Zephyr, so we'll track that for adjustment as needed when we move to a newer Zephyr version eventually.