void Send_N_byte(uint8 Sla,uint8 Subaddr,uint8 Data)
{
uint8 ii=0;
I2C0CONCLR =(1<<3);
I2C0CONSET = (1<<5);
I2C0DAT = Sla&0xfe; // 和屏蔽部分对照，改成这样，第2步读到的状态位正常--18，使用屏蔽部分，第2步读到的状态位为 20，不是18
// while ( ((I2C0STAT & 0xf8)!=0x08) && ((I2C0STAT & 0xf8)! =x10) ); // && (ii++<0xff) );
// temptemp = I2C0STAT;
// I2C0DAT = 0x34;
I2C0CONCLR = 1<<3;
while ( ((I2C0STAT & 0xf8)!=0x18) && ((I2C0STAT & 0xf8)!=0x20) );// && (ii++<0xffff) );
// temptemp = I2C0STAT;
// if((I2C0STAT & 0xf8)!=0x18)
// {
I2C0DAT = Subaddr;
I2C0CONCLR = 1<<3;
// }
// else
// {
// I2C0CONCLR =0x28;
// I2C0CONSET=1<<4;
// return ;
// }
// ii=0;
while ( ((I2C0STAT & 0xf8)!=0x28) && ((I2C0STAT & 0xf8)!=0x30) && (ii++<0xff) );
temptemp = I2C0STAT; //该句测试用 状态变为08H，不懂为什么，求助
if(((I2C0STAT & 0xf8)!=0x28))
{
I2C0DAT = Data;
I2C0CONCLR = 1<<3;
ii=0;
} else {
I2C0CONCLR =0x28;
I2C0CONSET=1<<4;
return ;
}
while ( ((I2C0STAT & 0xf8)!=0x28) && ((I2C0STAT & 0xf8)!=0x30) && (ii++<0xffff) );
temptemp = I2C0STAT;
I2C0CONCLR =0x28; // 清零 SI 和 STA
I2C0CONSET=1<<4; // 1<<3 he 1<<5
temptemp = I2C0STAT;
} |
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