我是最近才开始学习ARM的，许多知识还不是很明白，今天简单测试一下ARM的UART端口的功能，结果是发送能正常发送，接收却不能正常接收，接收数据时根本就进不了中断处理程序，不知道为什么，这是我写的测试代码，有点乱，但还是希望各位兄弟能给个解决的方法，谢谢
#include "config.h"
#include "stdlib.h"
#include "string.h"
unsigned char Size(void)
{
// return sizeof(HEAPNODE);
return 0;
}
unsigned char Free[1000];
extern void UartHandler(void);
//复位FIFO操作使用的宏
#define OSRxFIFOReset(X) if(X)U1FCR |= (1<<1);
else
U0FCR |=(1<<1);
#define OSTxFIFOReset(X) if(X)U1FCR |= (1<<2);
else
U0FCR |=(1<<2);
#define OSUartDisable(X)
#define OSUartEnable(X)
#define OSUartIOConfig(X) if(X) PINSEL0 = (PINSEL0&0xFFF0FFFF)&0x00050000;
else
PINSEL0 = (PINSEL0&0xFFFFFFF0)&0x00000005;
char *Name="gwsino@landwind.com.cn
thank you for your going home!";
void UartSendNBytes(unsigned char *nBytes,unsigned char size);
unsigned char idx = 0;
void RxComplete(void)
{
unsigned char Rec[8];
unsigned char *read = Rec;
unsigned char IIR;
switch(U0IIR & 0x0F)
{
case 0x02:
if(idx > strlen(Name))
break;
U0THR = Name[idx++];
//idx++;
break;
case 0x04:
case 0x0c:
Rec[1] = U0RBR;
break;
}
VICVectAddr = 0;
}
void UartSendByte(unsigned char nbyte)
{
U0THR = nbyte;
while((U0LSR & 0x40)==0)
continue;
}
void UartSendNBytes(unsigned char *nBytes,unsigned char size)
{
while(size--)
{
U0THR = *nBytes++;
while((U0LSR & 0x40) == 0)
continue;
}
}
int main (void)
{// add user source code
volatile unsigned int size;
unsigned int value;
unsigned short int fdiv;
//{21,23,43,53,54,65,76,67,78,34,34,34,34,54,45,32,31,0,0,0,0,5,23,34,0,0,0,0,0,0,0,255};
// strcpy((char*)Name,"gwsino@landwind.com.cn
thank you for your going home!");
fdiv = (Fpclk / 16)/9600;
U0LCR = 0X83;
U0DLM =(unsigned char)( fdiv / 256);
U0DLL = (unsigned char)(fdiv % 256);
U0LCR = 0X03;
PINSEL0 = (PINSEL0&0xFFFFFFF0)|0x00000005;
U0FCR = 0X07;
U0FCR |= 0xC0;
VICIntSelect = 0x0000000;
VICIntEnable |= (1<<6);
VICVectCntl0 = 0x26;
VICVectAddr0 = (int) UartHandler;
U0IER = 0X07;
U0THR = 0x00;
//UartSendNBytes((unsigned char*)Name,(unsigned char)strlen((char*)Name));
// OSRxFIFOReset(1);
size = Size();
if(size != 0)
{
value = value+size;
}
while(1)
{
}
return value;
} |
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