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| author | Sergey Vlasov <sigprof@gmail.com> | 2021-03-03 07:26:06 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-03-02 20:26:06 -0800 |
| commit | 18a333ec6bc9051ae7ec63a809d725c5c5f77046 (patch) | |
| tree | f2f34dfe316a4c5c6d1ad065c7512a32d46e5820 /docs | |
| parent | 8f5d2e546e69e09edd28ff68f3d3a894f96087a7 (diff) | |
| download | qmk_firmware-18a333ec6bc9051ae7ec63a809d725c5c5f77046.tar.gz qmk_firmware-18a333ec6bc9051ae7ec63a809d725c5c5f77046.zip | |
Add support for complementary outputs to the WS2812 PWM driver (#11988)
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ws2812_driver.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/ws2812_driver.md b/docs/ws2812_driver.md index cca6827ec8..fa14f02fdb 100644 --- a/docs/ws2812_driver.md +++ b/docs/ws2812_driver.md @@ -102,11 +102,14 @@ Configure the hardware via your config.h: #define WS2812_PWM_DRIVER PWMD2 // default: PWMD2 #define WS2812_PWM_CHANNEL 2 // default: 2 #define WS2812_PWM_PAL_MODE 2 // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 2 +//#define WS2812_PWM_COMPLEMENTARY_OUTPUT // Define for a complementary timer output (TIMx_CHyN); omit for a normal timer output (TIMx_CHy). #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. ``` +Note that using a complementary timer output (TIMx_CHyN) is possible only for advanced-control timers (TIM1, TIM8, TIM20 on STM32), and the `STM32_PWM_USE_ADVANCED` option in mcuconf.h must be set to `TRUE`. Complementary outputs of general-purpose timers are not supported due to ChibiOS limitations. + You must also turn on the PWM feature in your halconf.h and mcuconf.h #### Testing Notes |