C8051F392无法进入中断，求助

只看该作者 · 2015-1-9 19:49

仿真进入不了中断，函数 EEPROM_ByteWrite  没执行，求大神解答！
#include "c8051F392.h"
#include "iic.h"
void delay(int);
sbit EN_1151P = P0^5;
main(void)
{
unsigned char temp_char[1];
EN_1151P = 0;
PCA0MD &= ~0x40;          //WDT
Port_IO_Init();
Oscillator_Init();
I2C_Init();
Timer3_Init();
EA  = 1 ;       //开中断

while(1)
{
   EEPROM_ByteWrite(0X00, 0x08);
   EEPROM_ByteWrite(0X01, 0x01);
   EEPROM_ByteWrite(0X02, 0x05);
   EEPROM_ByteWrite(0X03, 0x07);
   EEPROM_ByteWrite(0X07, 0x01);
   EEPROM_ByteWrite(0X0B, 0x80);
   EEPROM_ByteWrite(0X0C, 0x80);
   EEPROM_ByteWrite(0X0D, 0x80);
   temp_char[0] = EEPROM_ByteRead(0x0F);
   delay(1000);
   SMBus_ISR ();
}
}

void delay (int i)
{
int m;
for(m=0;m<i;m++);
}

//以下中断函数：

char Tran_Flag;
char xdata sRecComBuf[8];
char *pointer;

void Timer3_ISR (void) interrupt 14       //Timer3_ISR
{
SMB0CF &= ~0x80;       // 禁止
SMB0CF |= 0x80;          // 打开
TMR3CN &= ~0x80;    // 清除
SMB_BUSY=0;    //MARK
}

void SMBus_ISR (void) interrupt 7          //SMBus_ISR
{
bit FAIL = 0;                            // 标志位---ISR
static char i;                         // 发或收的计数
static bit SEND_START = 0;
switch (SMB0CN & 0xF0)                //状态
{
   case SMB_MTSTA:
   SMB0DAT = TARGET;                // 连接目标从机地址
   SMB0DAT |= SMB_RW;                // 连接R/W
   STA = 0;                         // 清除开始位
   i = 0;                            // 重置数据字节计数
   break;

   case SMB_MTDB:
      if (ACK)                         // 应答
      {
         if (SEND_START)
         {
            STA = 1;
            SEND_START = 0;
            break;
         }
         if(SMB_SENDWORDADDR)          // 是否发送？
         {
            SMB_SENDWORDADDR = 0;       // 清标志位
            SMB0DAT = WORD_ADDR;       // 发高8位地址
            /* if (SMB_RANDOMREAD)
            {
               SEND_START = 1;
               SMB_RW = READ;
            }*/
            break;
         }
         else if(SMB_SENDWORDADDR1)
         {
            SMB_SENDWORDADDR1 = 0;
            SMB0DAT = WORD_ADDR1;       // 发低8位地址
            if (SMB_RANDOMREAD)
            {
               SEND_START = 1;          // 在下一个ACK后发STA
               SMB_RW = READ;
            }
            break;
         }
         if (SMB_RW==WRITE)             // 写？
         {

            if (i < SMB_DATA_LEN)
            {
               SMB0DAT = *pSMB_DATA_OUT;
               pSMB_DATA_OUT++;
               i++;
            }
            else
            {
               STO = 1;                   // 停止传输
               SMB_BUSY = 0;             // 清除
            }
         }
         else {}
      }
      else                               // NACK,
      {
         if(SMB_ACKPOLL)
         {
            STA = 1;                   // 重发
         }
         else
         {
            FAIL = 1;                   // 发送失败
         }
      }
      break;

   case SMB_MRDB:                      //接收
      if ( i < SMB_DATA_LEN )
      {
         *pSMB_DATA_IN = SMB0DAT;
         pSMB_DATA_IN++;
         i++;
         ACK = 1;                      //设定ACK
      }
      if (i == SMB_DATA_LEN)
      {
         SMB_BUSY = 0;                   // 释放SMB
         ACK = 0;
         STO = 1;
      }
      break;
      default:
      FAIL = 1;
      break;
}
if (FAIL)
{
   SMB0CN &= ~0x40;                      // 复位
   SMB0CN |= 0x40;
   SMB_BUSY = 0;
}
SI=0;                                  // 清除终端标志位
}

void EEPROM_ByteWrite( unsigned int addr, unsigned char dat ) //EEPROM_ByteWrite
{
while (SMB_BUSY);                      // 等待SMB空闲
SMB_BUSY = 0;

// ISR参数设置
TARGET = EEPROM_ADDR;                   // 设置目标从机地址
SMB_RW = WRITE;                         // 写标记
SMB_SENDWORDADDR = 1;                   // 高8位
SMB_SENDWORDADDR1 = 1;                   // 低8位
SMB_RANDOMREAD = 0;                      // 不发STA
SMB_ACKPOLL = 1;                         //如从机无应答将自动重发
WORD_ADDR = addr/256;
WORD_ADDR1 = addr%256;
SMB_SINGLEBYTE_OUT = dat;
pSMB_DATA_OUT = &SMB_SINGLEBYTE_OUT;
SMB_DATA_LEN = 1;
STA = 1;
}

unsigned char EEPROM_ByteRead( unsigned int addr)
{
unsigned char retval;
while (SMB_BUSY);
SMB_BUSY = 0;
TARGET = EEPROM_ADDR;
SMB_RW = WRITE;
SMB_SENDWORDADDR = 1;
SMB_SENDWORDADDR1 = 1;
SMB_RANDOMREAD = 1;
SMB_ACKPOLL = 1;
WORD_ADDR = addr/256;
WORD_ADDR1 = addr%256;
pSMB_DATA_IN = &retval;
SMB_DATA_LEN = 1;
STA = 1;
while(SMB_BUSY);
return retval;
}