isr.c

采用811芯片实现单片机读写U盘的源代码

#define LSR_FILE
#include "include.h"

//extern XXGFLAGS bdata bXXGFlags;
//extern UART_CMD_BLOCK xdata inblock;
//extern unsigned char xdata UartInBuffer[2112];
//extern UART_CMD_BLOCK xdata UartCmdBlock;
//extern unsigned char xdata UARTBUF[UARTBUF_LENGTH];

//extern uchar data time;
//extern uint data r_in,r_out,t_in,t_out; /*队列指针*/
//extern bit r_full,t_empty,t_done;   /*缓冲区状态标志(满,空,发送完成)*/

//extern uchar xdata t_buf[];      /* 串行发送缓冲 */
//extern uchar xdata r_buf[];      /* 串行接收缓冲 */


void ISR_COMM(void) interrupt 4
{
	if(RI)
	{
		RI=0;
		if(!r_full)
		{
			r_buf[r_in]=SBUF;
			r_in=++r_in&0x3ff;
			if(r_in+1==r_out)	r_full=1;
		}
	}
	if(TI)
	{
		TI=0;
		if(!t_done)
		{
			SBUF=t_buf[t_out];
			t_out=++t_out&0x3ff;
			if(t_out==t_in)	t_done=1;	//正在发送最后一字节标志
		}
		else
		{
			t_empty=0;	//发送完成
			t_done=0;
		}
	}
}

void ISR_Timer0(void) interrupt 1
{
	DISABLE_INTERRUPTS;
	//lClockTicks ++;
	bXXGFlags.bits.bTimer = 1;
	if(time) time--;
	//if(bZBoardFlags.bits.bLED == LED_FLASH)
	//	IO_LED ^= 1;
	TL0 = 0xf0;         /* value set by user    *//*定时器0时间,5ms*/
	TH0 = 0xd8;         /* value set by user  */
	
	ENABLE_INTERRUPTS;
}

//void ISR_Timer1(void) interrupt 3
//{
//}

//void ISR_Timer2(void) interrupt 5
//{
//}

//void ISR_INT1(void) interrupt 2
//{
//}

void ISR_INT0(void) interrupt 0
{
	//unsigned char intr;
	DISABLE_INTERRUPTS;
	//ISRx_FN_USB();
	//intr=SL811Read(IntStatus);
	SL811Write(IntStatus,INT_CLEAR);
	ENABLE_INTERRUPTS;
}

//void Reset_Timer0(void)
//{
//	TR0=0;
//	TF0=0;
//	TL0 = 0x0;         /* value set by user    */
//	TH0 = 0x0;         /* value set by user  */
//	//ET0 = 1;           /* IE.1*/
//	TR0 = 1;           /* TCON.4 start timer  */
//}