57 lines
1.0 KiB
C
57 lines
1.0 KiB
C
/*
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* WS2812_SPI.c
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*
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* Created on: Sep 4, 2023
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* Author: controllerstech
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*/
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#include "main.h"
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#include "WS2812_SPI.h"
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#define NUM_LED 25
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uint8_t LED_Data[NUM_LED][4];
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extern SPI_HandleTypeDef hspi2;
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#define USE_BRIGHTNESS 1
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extern int brightness;
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void setLED (int led, int RED, int GREEN, int BLUE)
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{
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LED_Data[led][0] = led;
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LED_Data[led][1] = GREEN;
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LED_Data[led][2] = RED;
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LED_Data[led][3] = BLUE;
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}
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void ws2812_spi (int GREEN, int RED, int BLUE)
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{
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#if USE_BRIGHTNESS
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if (brightness>100)brightness = 100;
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GREEN = GREEN*brightness/100;
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RED = RED*brightness/100;
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BLUE = BLUE*brightness/100;
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#endif
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uint32_t color = GREEN<<16 | RED<<8 | BLUE;
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uint8_t sendData[24];
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int indx = 0;
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for (int i=23; i>=0; i--)
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{
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if (((color>>i)&0x01) == 1) sendData[indx++] = 0b110; // store 1
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else sendData[indx++] = 0b100; // store 0
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}
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HAL_SPI_Transmit(&hspi2, sendData, 24, 1000);
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}
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void WS2812_Send (void)
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{
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for (int i=0; i<NUM_LED; i++)
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{
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ws2812_spi(LED_Data[i][1], LED_Data[i][2], LED_Data[i][3]);
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}
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//HAL_Delay (1);
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}
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