https://github.com/shpegun60/ws2812_dma

ws2812 project
https://github.com/shpegun60/ws2812_dma

nonblocking stm32 ws2812 ws2812-dma

Last synced: about 2 months ago
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ws2812 project

• Host: GitHub
• URL: https://github.com/shpegun60/ws2812_dma
• Owner: shpegun60
• License: apache-2.0
• Created: 2022-02-20T18:03:15.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2022-02-20T18:35:30.000Z (almost 3 years ago)
• Last Synced: 2023-09-13T07:45:59.113Z (over 1 year ago)
• Topics: nonblocking, stm32, ws2812, ws2812-dma
• Language: C
• Homepage:
• Size: 10.7 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
## Nonblocking continious ws2812 handler

```c

#include "ws2812b.h"

#define NUMBER_OF_LEDS 24

typedef struct {

	RGB_t colors [NUMBER_OF_LEDS]; // or HSV_t

	ws2812b_t ws2812b_obj;

} WS2812_Handle;

extern TIM_HandleTypeDef htim1;

WS2812_Handle ws2812;

int main () {

	ws2812b_Init(&ws2812->ws2812b_obj, &htim1, TIM_CHANNEL_4);

	

	//white color load

	for(uint32_t i = 0; i < NUMBER_OF_LEDS; ++i) {

		ws2812->colors[i].r = 0xFF;

		ws2812->colors[i].g = 0xFF;

		ws2812->colors[i].b = 0xFF;

	}

	

	while(1) {

		if(ws2812b_IsReady(&ws2812->ws2812b_obj))  {

			ws2812b_SendRGB(&ws2812->ws2812b_obj, ws2812->colors, NUMBER_OF_LEDS);

		}

	}

}

// callbacks overwriting

void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim) {

	if(htim->Instance == ws2812.ws2812b_obj.tim->Instance) {

		ws2812b_dma_handler(&ws2812.ws2812b_obj, 0);

	}

}

void HAL_TIM_PWM_PulseFinishedHalfCpltCallback(TIM_HandleTypeDef *htim) {

	if(htim->Instance == ws2812.ws2812b_obj.tim->Instance) {

		ws2812b_dma_handler(&ws2812.ws2812b_obj, 1);

	}

}

```