STM32F103控制WS2812 5050RGB灯
WS2812智能外控集成LED光源：
- 控制电路与RGB芯片集成在一个5050封装的元器件中，构成一个完整的外空像素点。
- 内置信号整形电路，任何一个像素点收到信号后经过波形整形再输出，保证线路波形畸变不会累加。
- 内置上电复位和掉电复位电路。
- 每个像素点的三基色颜色可实现256级亮度显示，完成16777216种颜色的全真彩色显示，扫描频率不低于400Hz/S。
- 串行级联接口，能通过一根信号线完成数据的接收与解码。
- 任意两点传输距离在不超过5米是无需增加任何电路。
- 当刷新速率30帧/秒时，低速模式级联数不小于512点，高速模式不小于1024点。
- 数据发送速度可达800Kbps。
- 光的颜色高度一致，性价比高。
/** ws2812.h** Created on: May 6, 2021* Author: song'yu'long*/#ifndef INC_WS2812_H_
#define INC_WS2812_H_
#include /** ws2812.c** Created on: May 6, 2021* Author: song'yu'long*/#include "gpio.h"
#include "ws2812.h"
#include "main.h"#define DIN_PORT GPIOB //5050RGB WS2812-DIN Port
#define DIN_PIN GPIO_PIN_9 //5050RGB WS2812-DIN Pin#define LEDS_NUM (9)
unsigned int rgbflow[][LEDS_NUM]={{COLOR_RED,COLOR_RED,COLOR_RED,COLOR_GREEN,COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW},{COLOR_RED,COLOR_RED,COLOR_GREEN,COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW,COLOR_RED},{COLOR_RED,COLOR_GREEN,COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW,COLOR_RED,COLOR_RED},{COLOR_GREEN,COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW,COLOR_RED,COLOR_RED,COLOR_RED},{COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW,COLOR_RED,COLOR_RED,COLOR_RED,COLOR_GREEN},{COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW,COLOR_RED,COLOR_RED,COLOR_RED,COLOR_GREEN,COLOR_GREEN},{COLOR_YELLOW,COLOR_YELLOW,COLOR_YELLOW,COLOR_RED,COLOR_RED,COLOR_RED,COLOR_GREEN,COLOR_GREEN,COLOR_GREEN},{COLOR_YELLOW,COLOR_YELLOW,COLOR_RED,COLOR_RED,COLOR_RED,COLOR_GREEN,COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW},{COLOR_YELLOW,COLOR_RED,COLOR_RED,COLOR_RED,COLOR_GREEN,COLOR_GREEN,COLOR_GREEN,COLOR_YELLOW,COLOR_YELLOW},
};/** @brief nop延时*/
void delay_xnop(int x)
{while(x--){asm("nop");}
}/** @brief WS2812 写入一个像素颜色* @param color:颜色RGB值#RRGGBB, 如0xff0000红色* @return none*/
void ws2812_onepixel(unsigned int color)
{// WS2812 颜色数据格式 G7~G0,R7~R0,B7~B0， RGB=>GRBunsigned int tmp = (((color&0x00ff00)<<8)|((color&0xff0000)>>8)|(color&0xff));// T0H 0码，高电平时间 0.35us ±150ns// T0L 0码，低电平时间 0.80us ±150ns// T1H 1码，高电平时间 0.70us ±150ns// T1L 1码，低电平时间 0.60us ±150ns// RES 帧单位，低电平时间 50us以上// 注意：因使用STM32库函数操作GPIO，满足不了最小电平反转时间，后来改为寄存器操作即可满足！STM32 8MHz晶振，72MHz主频。int i=0;for(i=23; i>=0; i--){if ((tmp>>i)&0x01) {DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BSRR = DIN_PIN;delay_xnop(6);DIN_PORT->BRR = DIN_PIN;delay_xnop(1);} else {DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BSRR = DIN_PIN;DIN_PORT->BRR = DIN_PIN;DIN_PORT->BRR = DIN_PIN;DIN_PORT->BRR = DIN_PIN;}}
}/** @brief WS2812 写入一个帧间隔* @param none* @note DIN Low RES:>50us* @return none*/
void ws2812_oneframe(void)
{HAL_GPIO_WritePin(DIN_PORT, DIN_PIN, GPIO_PIN_RESET);delay_xnop(500);
}void ws2812_waterflow(void)
{int i=0,j=0;for (i=0; i<(sizeof(rgbflow)/sizeof(rgbflow[0])); i++){for(j=0; j<LEDS_NUM; j++){ws2812_onepixel(rgbflow[i][j]);}ws2812_oneframe();HAL_Delay(60);}
}/* USER CODE END Header_StartDefaultTask */
void StartDefaultTask(void *argument)
{/* USER CODE BEGIN StartDefaultTask *//* Infinite loop */for(;;){// 流水灯测试9LEDws2812_waterflow();#if 0//TODO:UPDATE RGB LEDws2812_onepixel(0xff0000);ws2812_onepixel(0xff0000);ws2812_onepixel(0xff0000);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x0000ff);ws2812_onepixel(0x0000ff);ws2812_onepixel(0x0000ff);ws2812_oneframe();osDelay(500);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x0000ff);ws2812_onepixel(0x0000ff);ws2812_onepixel(0x0000ff);ws2812_onepixel(0xff0000);ws2812_onepixel(0xff0000);ws2812_onepixel(0xff0000);ws2812_oneframe();osDelay(500);ws2812_onepixel(0x0000ff);ws2812_onepixel(0x0000ff);ws2812_onepixel(0x0000ff);ws2812_onepixel(0xff0000);ws2812_onepixel(0xff0000);ws2812_onepixel(0xff0000);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x00ff00);ws2812_onepixel(0x00ff00);ws2812_oneframe();osDelay(500);
#endif}/* USER CODE END StartDefaultTask */
}
main.h和gpio.h是IDE配置工具自动生成的：
main.h
/* USER CODE BEGIN Header */
/********************************************************************************* @file : main.h* @brief : Header for main.c file.* This file contains the common defines of the application.******************************************************************************* @attention** © Copyright (c) 2021 STMicroelectronics.* All rights reserved.
** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:* opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header *//* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H#ifdef __cplusplus
extern "C" {
#endif/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes *//* USER CODE END Includes *//* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET *//* USER CODE END ET *//* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC *//* USER CODE END EC *//* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM *//* USER CODE END EM *//* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);/* USER CODE BEGIN EFP *//* USER CODE END EFP *//* Private defines -----------------------------------------------------------*/
/* USER CODE BEGIN Private defines *//* USER CODE END Private defines */#ifdef __cplusplus
}
#endif#endif /* __MAIN_H *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/gpio.h
/********************************************************************************* @file gpio.h* @brief This file contains all the function prototypes for* the gpio.c file******************************************************************************* @attention** © Copyright (c) 2021 STMicroelectronics.* All rights reserved.
** This software component is licensed by ST under Ultimate Liberty license* SLA0044, the "License"; You may not use this file except in compliance with* the License. You may obtain a copy of the License at:* www.st.com/SLA0044********************************************************************************/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __GPIO_H__
#define __GPIO_H__#ifdef __cplusplus
extern "C" {
#endif/* Includes ------------------------------------------------------------------*/
#include "main.h"/* USER CODE BEGIN Includes *//* USER CODE END Includes *//* USER CODE BEGIN Private defines *//* USER CODE END Private defines */void MX_GPIO_Init(void);/* USER CODE BEGIN Prototypes *//* USER CODE END Prototypes */#ifdef __cplusplus
}
#endif
#endif /*__ GPIO_H__ *//************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/本文来自互联网用户投稿，文章观点仅代表作者本人，不代表本站立场，不承担相关法律责任。如若转载，请注明出处。 如若内容造成侵权/违法违规/事实不符，请点击【内容举报】进行投诉反馈！