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` /** ****************************************************** ****************************** * @文件 bsp_ws281x.c * @author Apex 元 * @版本 V1.0.0 * @日期 2019-8-16 * @brief 主程序主体 ****************************************************** ****************************** * @注意力 * 1. IO 要求 1 样来模拟 * 事情。 * 2. 轮询电话会议的实现方式,必须使用 SYSTIC 电话会议的实现方式进行故障诊断 * 3. 发送0、1个必须通过订阅的方式,才能达到需求。 ****************************************************** ****************************** */ /* 包括 ------------------------------------------------------------ -------------------*/ #include "bsp_ws281x.h" #include “bsp_systick.h” uint8_t 像素缓冲区[PIXEL_NUM][GRB]; /** * @brief 初始化 WS281x LED * @param 无 * @retval 无 */ 无效 ws281x_init(无效) { GPIO_InitTypeDef GPIO_InitStruct; WS281x_GPIO_CLK_FUNCTION(WS281x_GPIO_CLK,启用); GPIO_InitStruct.GPIO_Pin = WS281x_GPIO_PIN; GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(WS281x_GPIOx, &GPIO_InitStruct); GPIO_ResetBits(WS281x_GPIOx, WS281x_GPIO_PIN); ws281x_closeAll(); delay_ms(100); } /** * @brief 专用于WS281x灯珠驱动的延时函数 * @param count:延时数 (示波器测量延时时间 = delay_num * 440ns ) * @retval None */ static void ws281x_delay(uint32_t count) { while(count--); } /** * @brief 发送0码,此处对时间要求很高,操作IO端口只能通过寄存器方式操作, * @param None * @retval None */ void ws281x_sendTero(void) { //GPIO_SetBits(WS281x_GPIOx, WS281x_GPIO_PIN); GPIOA->BSRR = WS281x_GPIO_PIN; ws281x_delay(1); //GPIO_ResetBits(WS281x_GPIOx, WS281x_GPIO_PIN); GPIOA->BRR = WS281x_GPIO_PIN; ws281x_delay(2); } /** * @brief 发送1码,此处对时间要求很高,操作IO端口只能通过寄存器方式操作, * @param None * @retval None */ void ws281x_sendOne(void) { //GPIO_SetBits(WS281x_GPIOx, WS281x_GPIO_PIN); GPIOA->BSRR = WS281x_GPIO_PIN; ws281x_delay(2); //GPIO_ResetBits(WS281x_GPIOx, WS281x_GPIO_PIN); GPIOA->BRR = WS281x_GPIO_PIN; ws281x_delay(1); } /** * @brief 发送复位 * @param None * @retval None */ void ws281x_sendReset(void) { GPIO_ResetBits(WS281x_GPIOx, WS281x_GPIO_PIN); ws281x_delay(114); //延时50us //GPIO_SetBits(WS281x_GPIOx, WS281x_GPIO_PIN); } /** * @brief 显示函数,将显存数据显示到灯珠上。 * @param None * @retval None */ void ws281x_show(void) { for(uint16_t i = 0; i < PIXEL_NUM; ++i) { for(uint8_t j = 0; j < GRB; ++j) { if(pixelBuffer[j] == WS_HIGH) { ws281x_sendOne(); } else { ws281x_sendTero(); } } } } /** * @brief close all led * @param None * @retval None */ void ws281x_closeAll(void) { uint16_t i; uint8_t j; for(i = 0; i < PIXEL_NUM; ++i) { for(j = 0; j < 24; ++j) { pixelBuffer[j] = WS_LOW; } } ws281x_show(); } /** * @brief 将RGB颜色组合到一个32位数据中存储 * @param red: 0-255 * green:0-255 * blue: 0-255 * @retval None */ uint32_t ws281x_color(uint8_t red, uint8_t green, uint8_t blue) { return green << 16 | red << 8 | blue; } /** * @brief 给特定LED灯设定颜色 * @param n:LED灯号 * GRBClor: 32位的颜色值 * @retval None */ void ws281x_setPixelColor(uint16_t n, uint32_t GRBColor) { uint8_t i; if(n < PIXEL_NUM) { for(i = 0; i < GRB; i++) { pixelBuffer[n] = ((GRBColor << i) & 0x800000) ? WS_HIGH : WS_LOW; } } } void ws281x_setPixelRGB(uint16_t n ,uint8_t red, uint8_t green, uint8_t blue) { uint8_t i; if(n < PIXEL_NUM) { for(i = 0; i < GRB; ++i) { pixelBuffer[n] = (((ws281x_color(red,green,blue) << i) & 0X800000) ? WS_HIGH : WS_LOW); } } } // Input a value 0 to 255 to get a color value. // The colours are a transition r - g - b - back to r. uint32_t ws281x_wheel(uint8_t wheelPos) { wheelPos = 255 - wheelPos; if(wheelPos < 85) { return ws281x_color(255 - wheelPos * 3, 0, wheelPos * 3); } if(wheelPos < 170) { wheelPos -= 85; return ws281x_color(0, wheelPos * 3, 255 - wheelPos * 3); } wheelPos -= 170; return ws281x_color(wheelPos * 3, 255 - wheelPos * 3, 0); } // Fill the dots one after the other with a color void ws281x_colorWipe(uint32_t c, uint8_t wait) { for(uint16_t i=0; i ws281x_show(); delay_ms(wait); } } void ws281x_rainbow(uint8_t wait) { uint16_t i, j; for(j=0; j<256; j++) { for(i=0; i } ws281x_show(); delay_ms(wait); } } // Slightly different, this makes the rainbow equally distributed throughout void ws281x_rainbowCycle(uint8_t wait) { uint16_t i, j; for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel for(i=0; i< PIXEL_NUM; i++) { ws281x_setPixelColor(i,ws281x_wheel(((i * 256 / PIXEL_NUM) + j) & 255)); } ws281x_show(); delay_ms(wait); } } //Theatre-style crawling lights. void ws281x_theaterChase(uint32_t c, uint8_t wait) { for (int j=0; j<10; j++) { //do 10 cycles of chasing for (int q=0; q < 3; q++) { for (uint16_t i=0; i < PIXEL_NUM; i=i+3) { ws281x_setPixelColor(i+q, c); //turn every third pixel on } ws281x_show(); delay_ms(wait); for (uint16_t i=0; i < PIXEL_NUM; i=i+3) { ws281x_setPixelColor(i+q, 0); //turn every third pixel off } } } } //Theatre-style crawling lights with rainbow effect void ws281x_theaterChaseRainbow(uint8_t wait) { for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel for (int q=0; q < 3; q++) { for (uint16_t i=0; i < PIXEL_NUM; i=i+3) { ws281x_setPixelColor(i+q, ws281x_wheel( (i+j) % 255)); //turn every third pixel on } ws281x_show(); delay_ms(wait); for (uint16_t i=0; i < PIXEL_NUM; i=i+3) { ws281x_setPixelColor(i+q, 0); //turn every third pixel off } } } } #ifndef __BSP_WS281X_H #define __BSP_WS281X_H #include "stm32f10x.h" #define WS281x_GPIO_CLK RCC_APB2Periph_GPIOA #define WS281x_GPIO_CLK_FUNCTION RCC_APB2PeriphClockCmd #define WS281x_GPIOx GPIOA #define WS281x_GPIO_PIN GPIO_Pin_0 #define PIXEL_NUM 15 #define GRB 24 //3*8 #define WS_HIGH 1//0xff #define WS_LOW 0//0xaa void ws281x_sendOne(void); void ws281x_sendTero(void); void ws281x_init(void); void ws281x_closeAll(void); void ws281x_rainbowCycle(uint8_t wait); uint32_t ws281x_color(uint8_t red, uint8_t green, uint8_t blue); void ws281x_setPixelColor(uint16_t n ,uint32_t GRBcolor); void ws281x_show(void); void ws281x_theaterChase(uint32_t c, uint8_t wait); void ws281x_colorWipe(uint32_t c, uint8_t wait); void ws281x_rainbow(uint8_t wait); void ws281x_theaterChaseRainbow(uint8_t wait); #endif /* __BSP_WS281X_H */ ****************************************************************************** * @file main.c * @author Apex yuan * @version V1.0.0 * @date 2019-8-16 * @brief Main program body ****************************************************************************** * @attention ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include “stm32f10x.h” #包括“bsp.h” /** @addtogroup Template_Project * @{ */ /* 私有类型定义 ---------------------------------------------- -------------*/ /* 私有定义 ---------------------------------- --------------*/ /* 私有宏 ---------------------------------------------- ---------------*/ /* 私有变量 ---------------------------------------------- ------------*/ /* 私有函数原型 --------------------------------------------- --*/ /* 私有函数 ---------------------------------- ------------*/ /** * @brief 主程序 * @param 无 * @retval 无 */ 诠释主要(无效) { bsp_init(); /* 无限循环 */ 而 (1) { ws281x_rainbowCycle(20); //ws281x_theaterChase(0x005500, 200); // ws281x_colorWipe(ws281x_color(0x00, 0x00, 0xff), 250); ws281x_closeAll(); 延迟毫秒(1000); } } |
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