void I2c0Init(uint32 Fi2c)
{
if (Fi2c > 400000)
Fi2c = 400000;
PINSEL0 = (PINSEL0 & (~0xF0)) | 0x50; // 不影响其它管脚连接
I2C0SCLH = (Fpclk/Fi2c + 1) / 2; // 设定I2C时钟
I2C0SCLL = (Fpclk/Fi2c)/2;
I2C0CONCLR = 0x2C;
I2C0CONSET = 0x40;
}
/******************************************************
* 采用类似串口的发送方式 * *
* *
*******************************************************/
void Command_Aic23(uint8 sla,uint8 subaddr, uint8 data)
{
uint8 sub=0;;
// I2C0CONCLR = 1<<3;
I2C0CONSET = (1<<5)|(1<<6);
while(1)
{
switch(I2C0STAT & 0xf8)
{
case 0x08:
I2C0DAT = sla ; // 0位为0
I2C0CONCLR = 1<<3;
break;
case 0x10:
I2C0DAT = sla ;
I2C0CONCLR = 1<<3;
break;
case 0x18:
I2C0DAT = subaddr;
I2C0CONCLR = 1<<3 ;
break;
case 0x28:
if(sub==1)
{
I2C0CONCLR =0x28;
return;
}
I2C0DAT = data;
I2C0CONCLR = 1<<3 ;
sub=1;
break;
default :
I2C0CONCLR =0x28;
return;
break;
} //SWITCH
} // WHILE（1）
}
问题是每次执行完0X18分支之后就出错，望各位高手指点 |
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