基于stm32f103ze+WS2812b可调控RGB灯，使用spI+dma进行调光，调光编码可自己百度寻找修改本程序
单片机源程序如下:
- #include "ws2812.h"
- /*WS2812B Timing sequence
- ________
- | | T0L |
- 0 code |<------>|<-------------->|
- | T0H |________________|
-
-
- ___________
- | | T1L |
- 1 code |<--------->|<--------- -->|
- | T1H |______________|
-
-
- RET code
- | Treset |
- |<------------------------->|
- |___________________________|
-
- Data transefer time:
- T0H 0 code ,high voltage time 0.4us ±150ns
- T1H 1 code ,high voltage time 0.8us ±150ns
- T0L 0 code , low voltage time 0.85us ±150ns
- T1L 1 code ,low voltage time 0.45us ±150ns
- RES low voltage time Above 50us
-
- */
- int8_t WS2812_Init(void)
- {
- return 0;
- }
- static int8_t WS2812_BitCode_Packet(uint8_t bit_val,uint8_t *spi_packet_buf)
- {
- if(bit_val == 0){
- spi_packet_buf[0] = 0xFF;
- spi_packet_buf[1] = 0x00;
- spi_packet_buf[2] = 0x00;
- return 0;
- }
- else if(bit_val == 1){
- spi_packet_buf[0] = 0xFF;
- spi_packet_buf[1] = 0xFF;
- spi_packet_buf[2] = 0x00;
- return 0;
- }
- else
- return -1;
- }
- static int8_t WS2812_OnePixel_Packet(T_RGB_CTRL sRGBVal,uint8_t *packet_buf)
- {
- uint8_t bit_cnt;
- uint8_t color_cnt;
- uint8_t bit_pos;
- uint8_t singlecolor_val;
-
- for(color_cnt = 0; color_cnt < 3; color_cnt++){
- if(color_cnt == 0)
- singlecolor_val = sRGBVal.G_Val;
- else if(color_cnt == 1)
- singlecolor_val = sRGBVal.R_Val;
- else if(color_cnt == 2)
- singlecolor_val = sRGBVal.B_Val;
-
- for(bit_cnt = 0; bit_cnt < 8; bit_cnt++){
- bit_pos = (7 - bit_cnt);
- if(singlecolor_val & (1 << bit_pos) )
- WS2812_BitCode_Packet(1,packet_buf);
- else
- WS2812_BitCode_Packet(0,packet_buf);
- packet_buf += SPI_BYTE_LEN_PER_PIXEL;
- }
- }
- return 0;
- }
- uint32_t WS2812_Pixels_Packet(uint32_t pixel_num,uint32_t *rgb_buf,uint8_t* spi_packet_buf)
- {
- uint32_t pixel_index;
- T_RGB_CTRL rgb_ctrl_val;
- uint32_t spi_packet_buf_index = 0;
-
- for(pixel_index = 0; pixel_index < pixel_num; pixel_index++){
- rgb_ctrl_val.R_Val = (uint8_t)(rgb_buf[pixel_index] >> 16);
- rgb_ctrl_val.G_Val = (uint8_t)(rgb_buf[pixel_index] >> 8);
- rgb_ctrl_val.B_Val = (uint8_t)(rgb_buf[pixel_index] >> 0);
- WS2812_OnePixel_Packet(rgb_ctrl_val,spi_packet_buf + spi_packet_buf_index);
- spi_packet_buf_index += SPI_BYTE_LEN_PER_PIXEL * 24;
- }
- return spi_packet_buf_index;
- }
所有资料51hei提供下载:
WS2812_test.7z
(189.53 KB, 下载次数: 264)
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