/*****************************************************************************
** Function Name: IIC_WritePage()
** Descriptions: 写一页数据
** Input: SlvAddr IIC从机地址
** MemAddr 要写数据开始地址
** pData 要写的数据
** Count 要写的字节数
** Output:
** Returned:
*****************************************************************************/
void IIC_WritePage(INT32U SlvAddr, INT32U MemAddr, INT8U *pData, INT32U Count)
{
INT32U i,tmp;
if(Count > IIC_Page_Size)
{
return;
}
pIIC->IICCON=(1<<7)|(0<<6)|(1<<5)|(0xf);
pIIC->IICDS = SlvAddr; // 从器件地址 0xa0
pIIC->IICSTAT = 0xf0; // MasTx,Start
while(!((pIIC->IICCON)&IIC_TXRXINT_PEND)); // 等待发送完从器件应答
//while((pIIC->IICSTAT)&IIC_RXACK); // 等待 应答
pIIC->IICDS = (MemAddr>>8)&0xff; // 高8位地址
for(i=0; i<10; i++); //for setup time until rising edge of IICSCL
pIIC->IICCON = 0xaf; //resumes IIC operation.
while(!((pIIC->IICCON)&IIC_TXRXINT_PEND)); // 等待发送完从器件应答
//while((pIIC->IICSTAT)&IIC_RXACK); //
pIIC->IICDS = (MemAddr)&0xff; // 低8位地址
for(i=0; i<10; i++); //for setup time until rising edge of IICSCL
pIIC->IICCON = 0xaf; //resumes IIC operation.
//while(!((pIIC->IICCON)&IIC_TXRXINT_PEND)); // 等待发送完从器件应答
//while((pIIC->IICSTAT)&IIC_RXACK);
// 写入地址发送完
while(1)
{
while(!((pIIC->IICCON)&IIC_TXRXINT_PEND)); // 等待发送完从器件应答
//while((pIIC->IICSTAT)&IIC_RXACK);
//for(i=0; i<2; i++);
if((Count--)==0)
{
pIIC->IICSTAT = 0xd0; //stop MasTx condition
pIIC->IICCON = 0xaf; //resumes IIC operation.
for(i=0; i<800; i++); //wait until stop condtion is in effect.
//The pending bit will not be set after issuing stop condition.
break;
}
pIIC->IICDS = *pData; //_iicData[0] has dummy.
pData++;
for(i=0; i<10; i++); //for setup time until rising edge of IICSCL
pIIC->IICCON = 0xaf; //resumes IIC operation.
}
while(1)
{
pIIC->IICDS = SlvAddr; // 从器件地址 0xa0
pIIC->IICSTAT = 0xf0; // MasTx,Start
pIIC->IICCON = 0xaf; //resumes IIC operation.
while(!((pIIC->IICCON)&IIC_TXRXINT_PEND)); // 等待发送完从器件应答
//while((pIIC->IICSTAT)&IIC_RXACK); // 等待 应答
if(!((pIIC->IICSTAT)&IIC_RXACK))
{
break;
}
}
pIIC->IICSTAT = 0xd0; //stop MasTx condition
pIIC->IICCON = 0xaf; //resumes IIC operation.
for(i=0; i<800; i++);
}
IIC采用软件查询中断的方式，
出现后部分数据写入错误，请大家看看问题在哪？谢谢了！ |
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