interrupt void ISRTxUart(void)
{
if (Uart.SendWritePtr != Uart.SendReadPtr)
{
SciaRegs.SCITXBUF = Uart.SendBuffer[Uart.SendReadPtr ++];
Uart.SendReadPtr &= 0xff;
}
Uart.SendBusy = Uart.SendWritePtr != Uart.SendReadPtr;
SciaRegs.SCIFFTX.bit.TXINTCLR = 1;
PieCtrlRegs.PIEACK.bit.ACK9 = 1;
}
interrupt void ISRRxUart(void)
{
Uart.ReceiveBuffer[Uart.ReceiveWritePtr ++] = SciaRegs.SCIRXBUF.all;
Uart.ReceiveWritePtr &= 0xff;
SciaRegs.SCIFFRX.bit.RXFFOVRCLR = 1;
SciaRegs.SCIFFRX.bit.RXFFINTCLR = 1;
PieCtrlRegs.PIEACK.bit.ACK9 = 1;
}
void UartObj::Init(void)
{
unsigned int i;
for (i = 0; i < sizeof(ReceiveBuffer); i ++) {
ReceiveBuffer = 0;
SendBuffer = 0;
}
ReceiveWritePtr = 0;
ReceiveReadPtr = 0;
ReceivePosition = 0;
ReceiveCount = 0;
SendWritePtr = 0;
SendReadPtr = 0;
SendBusy = false;
State = 0;
EALLOW;
GpioMuxRegs.GPFMUX.bit.SCITXDA_GPIOF4 = 1;
GpioMuxRegs.GPFMUX.bit.SCIRXDA_GPIOF5 = 1;
EDIS;
/* loopback 8 bit data */
SciaRegs.SCICCR.all = 0x07; // 1 bit stop, disable parity, idle mode, 8 bits data
SciaRegs.SCICTL1.all = 0x03; // enable TX
SciaRegs.SCICTL2.all = 0x03; //
SciaRegs.SCIHBAUD = 0;
SciaRegs.SCILBAUD = 0xf3;//SCI_PRD & 0xff;//0xF3;
SciaRegs.SCICTL1.all = 0x23;
// PieCtrlRegs.PIECRTL.bit.ENPIE = 1; // Enable the PIE block
PieCtrlRegs.PIEIER9.bit.INTx1 = 1;
PieCtrlRegs.PIEIER9.bit.INTx2 = 1;
/*设置中断服务程序入口地址*/
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.TXAINT = &ISRTxUart;
PieVectTable.RXAINT = &ISRRxUart;
EDIS; // This is needed to disable write to EALLOW protected registers
/*开中断*/
IER |= M_INT9;
}
//KEY7压键事件处理
void KeyboardObj::Key17(void)
{
System.BeepOn();
Lcd.SetDisplayPos(2, 0);//汉字定位到上行左端
Lcd.Display("KEY7键单击事件!!");
Uart.puts("KEY7键单击事件");
}本贴地址:http://www.hellodsp.com/bbs/viewthread.php?tid=9289
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