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以下是我程序中的SCI相关代码,我用中断方式接收,查询方式发送,但是不知为什么我用串口调试助手发送字符后不能接收到CPU发送回来的数据?
void sInitSCI(void)
{
EALLOW;
GpioCtrlRegs.GPAPUD.bit.GPIO28 = 0; // Enable pullup on GPIO28
GpioCtrlRegs.GPAQSEL2.bit.GPIO28 = 3; // asynch input
GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 1; // GPIO28 = SCIRXDA
GpioCtrlRegs.GPAPUD.bit.GPIO29 = 0; // Enable pullup on GPIO29
GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 1; // GPIO29 = SCITXDA
// GpioCtrlRegs.GPAQSEL2.bit.GPIO29 = 3; // asynch input
EDIS;
// One stop bit, no parity, 8-bit character length
SciaRegs.SCICCR.all=0x07;
// Enable transmit and receive, Relinquish SCI from Reset
SciaRegs.SCICTL1.all =0x03;
//bard= 115200
SciaRegs.SCIHBAUD=0x00;
SciaRegs.SCILBAUD=0x07;
// Enable Receive interrupt and transmit interrupt
SciaRegs.SCICTL2.bit.TXINTENA = 1;
SciaRegs.SCICTL2.bit.RXBKINTENA = 1;
// SciaRegs.SCICTL1.bit.SWRESET = 1;
SciaRegs.SCICTL1.all = 0x0023;
}
interrupt void sSciRxIsr(void) //接收中断函数
{
wSciRxTemp = SciaRegs.SCIRXBUF.bit.RXDT;
PieCtrlRegs.PIEACK.all = PIEACK_GROUP9;
}
void sSCITX(void)
{
if(SciaRegs.SCICTL2.bit.TXRDY == 1)
{
SciaRegs.SCITXBUF = wSciRxTemp;
}
}
请高手帮忙看看,谢谢!
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