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Add support for DMAMUX-capable MCU configuration with WS2812 PWM driver. (#9471)

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This commit is contained in:
Nick Brassel 2020-07-16 16:39:49 +10:00 • committed by James Young
parent 8a4a0c25fd
commit c6b7a0d386
2 changed files with 10 additions and 1 deletions
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3
docs/ws2812_driver.md
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@ -92,6 +92,7 @@ Configure the hardware via your config.h:
#define WS2812_PWM_PAL_MODE 2 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 2
#define WS2812_DMA_STREAM STM32_DMA1_STREAM2 // DMA Stream for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
#define WS2812_DMA_CHANNEL 2 // DMA Channel for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
#define WS2812_DMAMUX_ID STM32_DMAMUX1_TIM2_UP // DMAMUX configuration for TIMx_UP -- only required if your MCU has a DMAMUX peripheral, see the respective reference manual for the appropriate values for your MCU.
```
You must also turn on the PWM feature in your halconf.h and mcuconf.h
@ -117,5 +118,5 @@ Note: This only applies to STM32 boards.
To configure the `RGB_DI_PIN` to open drain configuration add this to your config.h file:
```c
#define WS2812_EXTERNAL_PULLUP
#define WS2812_EXTERNAL_PULLUP
```