我试图顺时针和逆时针点亮我的led灯。 我用MPU6050作为LED方向的控制。我检查了我的mpu6050驱动程序代码，它们还不错。 顺时针工作时效果很好，所有指示灯都以红色点亮。像这样 enter image description here 当它逆时针工作时，发生了一个问题 enter image description here
我尝试了许多方法来解决，但没有一个起作用。 这是我的领导司机代码
#include "../BOARD/ws2812/ws2812.h"
#include "bsp_usart1.h"
#include "delay.h"
uint8_t pixelBuffer[PIXEL_NUM][24] ;
void ws281x_init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
/* PA7 SPI1_MOSI */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //SPI-PA-7
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE);
SPI_I2S_DMACmd(SPI1, SPI_I2S_DMAReq_Tx, ENABLE);
DMA_DeInit(DMA1_Channel3);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t) &(SPI1 -> DR);
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)pixelBuffer; //cmar
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_BufferSize = PIXEL_NUM * 24; //cndtr;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel3, &DMA_InitStructure);
ws281x_closeAll(); //SHUT DOWN ALL LEDS
delay_ms(100); //SHUT DOWN DELAY
}
void ws281x_closeAll(void)
{
uint16_t i;
uint8_t j;
for(i = 0; i < PIXEL_NUM; ++i)
{
for(j = 0; j < 24; ++j)
{
pixelBuffer[i][j] = WS_LOW;
}
}
ws281x_show();
}
uint32_t ws281x_color(uint8_t red, uint8_t green, uint8_t blue)
{
return green << 16 | red << 8 | blue;
}
void ws281x_setPixelColor(uint16_t n ,uint32_t GRBcolor)
{
uint8_t i;
if(n < PIXEL_NUM)
{
for(i = 0; i < 24; ++i)
{
pixelBuffer[n][i] = (((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 < 24; ++i)
{
pixelBuffer[n][i] = (((ws281x_color(red,green,blue) << i) & 0X800000) ? WS_HIGH : WS_LOW);
}
}
}
void ws281x_show(void)
{
DMA_Cmd(DMA1_Channel3, DISABLE ); //shut down USART1 TX DMA1
DMA_ClearFlag(DMA1_FLAG_TC3);
DMA_SetCurrDataCounter(DMA1_Channel3,24 * PIXEL_NUM );
DMA_Cmd(DMA1_Channel3, ENABLE); //enable USART1 TX DMA1
}
// 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<PIXEL_NUM; i++) {
ws281x_setPixelColor(i, c);
ws281x_show();
delay_ms(wait);
}
}
//roll the opposite way
//doesnt enable the last led
void ws281x_colorWipe_rollback(uint32_t c, uint8_t wait){
uint16_t n;
for(uint16_t i = PIXEL_NUM ; i > 0; i --) {
ws281x_setPixelColor(i, c);
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<PIXEL_NUM; i++) {
ws281x_setPixelColor(i, ws281x_wheel((i+j) & 255));
}
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
}
}
}
}
让我不高兴的拖车功能是这些
// 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<PIXEL_NUM; i++) {
ws281x_setPixelColor(i, c);
ws281x_show();
delay_ms(wait);
}
}
//roll the opposite way
//doesnt enable the last led
void ws281x_colorWipe_rollback(uint32_t c, uint8_t wait){
uint16_t n;
for(uint16_t i = PIXEL_NUM ; i > 0; i --) {
ws281x_setPixelColor(i, c);
ws281x_show();
delay_ms(wait);
}
}
mcu：stm32f103c8 led：带有24个led的wsb2812
答案 0 :(得分：0)
您在CREATE PROCEDURE dbo.[Learning]
(
@StartDate DATE,
@EndDate DATE,
@Data VARCHAR(30),
@Cond_CID INT,
@Cond_PID INT,
@Cond_SSC VARCHAR(3)
)
AS
BEGIN
IF (@Cond_CID IS NULL OR @Cond_PID IS NULL OR @Cond_SSC IS NULL
OR @StartDate IS NULL OR @EndDate IS NULL OR @Data IS NULL
)
BEGIN
RAISERROR('Null values not allowed for the 3 last parameters!', 16, 1)
END
ELSE
BEGIN
UPDATE temp.dbo.Table6
SET StartDate = ISNULL(StartDate,@StartDate)
,EndDate = ISNULL(EndDate,@EndDate)
,Data = ISNULL(Data,@Data)
WHERE Table6.CID = @Cond_CID
AND
TABLE6.PID = @Cond_PID
AND
TABLE6.SSC = @Cond_SSc
END
END
函数中从24循环到1，但是您希望它从23下降到0：
ws281x_colorWipe_rollback答案 1 :(得分：0)
void ws281x_colorWipe_rollback(uint32_t c, uint8_t wait){
for(int i = PIXEL_NUM ; i > (-1); --i) {
ws281x_setPixelColor(i, c);
ws281x_show();
delay_ms(wait);
}
}
问题已解决