DMX512 STM32F4控制程序源碼

ID:391473 · 發(fā)表于 2018-8-30 09:55

stm32單片機(jī)源程序如下:

#include "usart.h"
#include "delay.h"
#include "stm32f4xx.h"
#include "dmx512.h"
#define PD8 PDout(8) //串口3發(fā)送腳
#define PD9 PDin(9) //串口3接收腳
//------------------------------DMX512的通信驅(qū)動(dòng)程序段-----------------------------------------------------
u8 pDMX_buf ;
//***********************************************************************
u8 TXDData[512]; //發(fā)送緩沖區(qū)512個(gè)數(shù)據(jù)
u8 RXDData[512]; //接收緩沖區(qū)512個(gè)數(shù)據(jù)
void DMX_init(void) //DMX512初始化
{
USART_TX_EN=1;
// int i;
TXDData[0] = 0; //起始碼00
// for(i = 1; i<=512; i++)
// {
// TXDData[i] = 0;
// }
TXDData[1] = 0XFF;
TXDData[2] = 128;
TXDData[3] = 00;
TXDData[4] = 0;
TXDData[5] = 255;
TXDData[6] = 0;
GPIO_ResetBits(GPIOD,GPIO_Pin_8); //輸出低電平
delay_us(92); //延時(shí)92us
GPIO_SetBits(GPIOD,GPIO_Pin_8); //輸出高電平
delay_us(16); //延時(shí)15us
}
void DMX_SendPacket(void) //發(fā)送DMX512數(shù)據(jù)
{
pDMX_buf = 0;
USART_SendData1(USART3,TXDData[0]);
while(USART_GetFlagStatus(USART3, USART_FLAG_TXE) == RESET ); //這里做緩沖區(qū)是否發(fā)送完判斷
pDMX_buf ++;
for( pDMX_buf = 1; pDMX_buf<=6; pDMX_buf++)
{
USART_SendData(USART3,TXDData[pDMX_buf]);
while(USART_GetFlagStatus(USART3, USART_FLAG_TXE) == RESET ); //這里做緩沖區(qū)是否發(fā)送完判斷
}
}