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/**
* color_length 每種顏色漸變最大長度，總顏色長度：color_length * 3
* return 顏色數(shù)據(jù)總長度
*/
uint32_t set_Color_Loop(uint8_t color_length)
{
RGB = (uint32_t*)malloc(color_length*3*sizeof(uint32_t));//分配數(shù)組大小，（所有漸變色顏色長度）
color_length -= 1;
for(uint8_t i=0;i<=color_length;i++)
{
RGB[i] = (((0xff/color_length)*i)<<8)|((0xff/color_length)*(color_length-i)); //藍到綠
RGB[color_length + 1 +i] = (((0xff/color_length)*i)<<16)|((0xff/color_length)*(color_length-i))<<8; //綠到紅
RGB[((color_length+1)*2) +i] = ((0xff/color_length)*i)|((0xff/color_length)*(color_length-i))<<16; //紅到藍
}
return color_length*3;
}
無間斷位移獲取8位顏色數(shù)據(jù)
/**
* colorwidth 每次獲取多少位
*/
void out_RGB(uint16_t data_Max_Length,uint16_t colorwidth)
{
static uint32_t rgb_position = 0;
for(uint32_t i = 0;i < colorwidth; i++){
uint16_t c = (rgb_position + i) % data_Max_Length;//末尾顏色數(shù)據(jù)結(jié)束時將首位的收據(jù)填充到數(shù)組
send_Data(RGB[c]);
}
rgb_position ++;
rgb_position %= data_Max_Length;
}

復(fù)制代碼

#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "WS2812B.h"
#include <stdlib.h>
uint32_t *RGB;//顏色列表數(shù)組
void LED_Init(void);
void PWM_Init(void);
uint32_t set_Color_Loop(uint8_t color_length);
void out_RGB(uint16_t data_Max_Length,uint16_t colorwidth);
int main(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
uart_init(115200);
delay_init();
LED_Init();
WS2812B_TIM_init();
uint32_t len = set_Color_Loop(32);//每兩種顏色之間的位數(shù)
while(1)
{
out_RGB(len,8);//8個燈，每次輸出8個數(shù)據(jù)
delay_ms(80);
}
}
/**
* colorwidth 每次獲取多少位
*/
void out_RGB(uint16_t data_Max_Length,uint16_t colorwidth)
{
static uint32_t rgb_position = 0;
for(uint32_t i = 0;i < colorwidth; i++){
uint16_t c = (rgb_position + i) % data_Max_Length;//末尾顏色數(shù)據(jù)結(jié)束時將首位的收據(jù)填充到數(shù)組
send_Data(RGB[c]);
}
rgb_position ++;
rgb_position %= data_Max_Length;
}
/**
* color_length 每種顏色漸變最大長度，總顏色長度：color_length * 3
* return 顏色數(shù)據(jù)總長度
*/
uint32_t set_Color_Loop(uint8_t color_length)
{
RGB = (uint32_t*)malloc(color_length*3*sizeof(uint32_t));//分配數(shù)組大小，（所有漸變色顏色長度）
color_length -= 1;
for(uint8_t i=0;i<=color_length;i++)
{
RGB[i] = (((0xff/color_length)*i)<<8)|((0xff/color_length)*(color_length-i)); //藍到綠
RGB[color_length + 1 +i] = (((0xff/color_length)*i)<<16)|((0xff/color_length)*(color_length-i))<<8; //綠到紅
RGB[((color_length+1)*2) +i] = ((0xff/color_length)*i)|((0xff/color_length)*(color_length-i))<<16; //紅到藍
}
return color_length*3;
}
void LED_Init()
{
GPIO_InitTypeDef GPIO_InitTypeStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE|RCC_APB2Periph_GPIOB,ENABLE);
GPIO_InitTypeStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitTypeStruct.GPIO_Pin = GPIO_Pin_5;
GPIO_InitTypeStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOE,&GPIO_InitTypeStruct);
GPIO_InitTypeStruct.GPIO_Pin = GPIO_Pin_5;
GPIO_Init(GPIOB,&GPIO_InitTypeStruct);
GPIOB->ODR ^= GPIO_Pin_5;
GPIOE->ODR ^= GPIO_Pin_5;
}

復(fù)制代碼