周工;
你好,我做了串口中断处理程序,我通过通过中断来发送数据,结果发送数据中断不响应,请帮忙看看是怎么回事,程序如下:
//设置波特率
#include "config.h"
#define UART0BPS 115200
#define BEEPCON 1 << 7
static uint8 readData;
uint8* sentData;
//设置引脚
void Pinsel0_Init()
{
PINSEL0 = 0x05;
IO0DIR = BEEPCON;
IO0SET = BEEPCON;
}
//初始化串口0
void Uart0_Init(void)
{
uint16 bps = (Fpclk / 16) / UART0BPS;
U0LCR = 0x83; //设置DLAB = 1
U0DLL = bps % 256; //设置波特率余数
U0DLM = bps / 256; //设置波特率除数
U0FCR = 0x00; //
U0LCR = 0X03; //设置DLAB = 0，1位停止位，无奇偶校验 字长度8
U0FCR = 0x00;
//U0IER = 0x05;
}
//串口0中断程序
void __irq Uart0_IRQ(void)
{
uint8 iir;
uint8 lsr;
//IO0CLR = BEEPCON;
while(((iir = U0IIR) & 0x01) == 0) //清除中断 iir = U0IIR;
{
switch(iir &0x0e)
{
case 0x06: //接收线状态
lsr = U0LSR; //清除中断
break;
case 0x04:
readData = U0RBR; //接收数据，同时清除中断
break;
case 0x02:
while(*sentData++ != '\0')
U0THR = *sentData; //发送数据，同时清除中断
break;
case 0x0a: //字符超时中断
break;
}
}
VICVectAddr =0; //VIC控制器禁止中断
}
void Uart_INT()
{
VICIntSelect = 0x00000000;
VICVectCntl5 = 0x26;
VICVectAddr5 = (uint32)Uart0_IRQ;
VICIntEnable = 0x00000040;
}
//读取数据
uint8 ReadData(void)
{
while((U0LSR & 0x01) == 0x00);
U0IER = 0x01;
return readData;
}
int main (void)
{
uint8 test[23] = {"Hello,How old are you\n"};
//int num = 21;
Pinsel0_Init();
Uart0_Init();
Uart_INT();
sentData = test;
U0IER = 0x02;
while(1);
return 0;
}
/*********************************************************************************************************
** End Of File
********************************************************************************************************/
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