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STM32 WS2812 Open Drain Configuration (#9414)

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* update docs stm32 only and applies  to all 3 driver
* cformat
This commit is contained in:
Xelus22 2020-06-19 22:35:32 +00:00 • committed by GitHub
parent b43bdc1c69
commit c785148445
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4 changed files with 54 additions and 11 deletions
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22
drivers/chibios/ws2812_pwm.c
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@ -24,6 +24,22 @@
# define WS2812_DMA_CHANNEL 2 // DMA Channel for TIMx_UP
#endif
// Push Pull or Open Drain Configuration
// Default Push Pull
#ifndef WS2812_EXTERNAL_PULLUP
# if defined(USE_GPIOV1)
# define WS2812_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
# else
# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING
# endif
#else
# if defined(USE_GPIOV1)
# define WS2812_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
# else
# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING
# endif
#endif
#ifndef WS2812_PWM_TARGET_PERIOD
//# define WS2812_PWM_TARGET_PERIOD 800000 // Original code is 800k...?
# define WS2812_PWM_TARGET_PERIOD 80000 // TODO: work out why 10x less on f303/f4x1
@ -142,11 +158,7 @@ void ws2812_init(void) {
for (i = 0; i < WS2812_COLOR_BIT_N; i++) ws2812_frame_buffer[i] = WS2812_DUTYCYCLE_0; // All color bits are zero duty cycle
for (i = 0; i < WS2812_RESET_BIT_N; i++) ws2812_frame_buffer[i + WS2812_COLOR_BIT_N] = 0; // All reset bits are zero
#if defined(USE_GPIOV1)
palSetLineMode(RGB_DI_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
#else
palSetLineMode(RGB_DI_PIN, PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING);
#endif
palSetLineMode(RGB_DI_PIN, WS2812_OUTPUT_MODE);
// PWM Configuration
//#pragma GCC diagnostic ignored "-Woverride-init" // Turn off override-init warning for this struct. We use the overriding ability to set a "default" channel config