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if(PassCount == I2C_NUMBYTES) {

pass(); } else {

fail(); }

//检查完毕

} }

} // end of stop condition detected // Interrupt source = Register Access Ready

// This interrupt is used to determine when the EEPROM address setup portion of the //该中断用于判断读数据通讯中何时完成EEPROM数据地址的设置；

// read data communication is complete. Since no stop bit is commanded, this flag //由于不产生停止位，这个标志（ARDY）告诉我们地址数据是否发送完成。

// tells us when the message has been sent instead of the SCD flag. If a NACK is //如果收到NACK，清除NACK位，并设置产生一个停止位。

// received, clear the NACK bit and command a stop. Otherwise, move on to the read //否则，继续读取通讯数据。

// data portion of the communication. else if(IntSource == I2C_ARDY_ISRC) //IIC模块准备好中断：包括【复位，发完一个数据单元（1~8bits的数据）

{ //却没收到ACK/STOP或者出现counter=0】都可引发该中断 ARDY_ISRC_number++;

if(I2caRegs.I2CSTR.bit.NACK == 1) //因为EEPROM处理数据忙而回复的NACK {

I2caRegs.I2CMDR.bit.STP = 1; //产生一个STOP停止位，从而引发一次SCD中断。 I2caRegs.I2CSTR.all = I2C_CLR_NACK_BIT; //清除NACK位 }

else if(CurrentMsgPtr->MsgStatus == I2C_MSGSTAT_SEND_NOSTOP_BUSY) {

CurrentMsgPtr->MsgStatus = I2C_MSGSTAT_RESTART;//更新为重发START位状态，为接收数据准备 }

} // end of register access ready else {

// Generate some error due to invalid interrupt source asm(\

ARDY_ISRC_NACK_number++;

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}

// Enable future I2C (PIE Group 8) interrupts

PieCtrlRegs.PIEACK.all = PIEACK_GROUP8; //重启中断允许 }

void pass() {

asm(\ for(;;); }

void fail() {

asm(\ for(;;); }

//=========================================================================== // No more.

//===========================================================================

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