28335 SCI 通信 通信, 程序

yuyang911220

用的是SCI-B，问题是无法进入接收中断，接收引脚上有数据。

程序如下 ：

• EALLOW ;
• GpioCtrlRegs.GPAMUX1.bit.GPIO9 = 0 ;
• GpioCtrlRegs.GPAMUX1.bit.GPIO11 = 0 ;
• GpioCtrlRegs.GPAMUX1.bit.GPIO14 = 0 ;
• GpioCtrlRegs.GPAMUX1.bit.GPIO15 = 0 ;
• GpioCtrlRegs.GPAMUX2.bit.GPIO18 = 2 ; //设置为CAN总线，而不是SCI-B
• GpioCtrlRegs.GPAMUX2.bit.GPIO19 = 2 ; //设置为CAN总线，而不是SCI-B
• GpioCtrlRegs.GPAMUX2.bit.GPIO22 = 3 ;  //设置SCI-B引脚
• GpioCtrlRegs.GPAMUX2.bit.GPIO23 = 3 ;  //设置SCI-B引脚
• EDIS ;
• ScibRegs.SCICCR.all = 0x07; //1位结束位，无奇偶校验，8位数据位
• ScibRegs.SCICTL1.all = 0x03; //使能transmitter和receiver，禁用sleep，屏蔽接收错误中断，复位SCI
• ScibRegs.SCIHBAUD = 0;
• ScibRegs.SCILBAUD = 80 & 0x00FF; //波特率=37500000/((80+1)*8)=57870
• ScibRegs.SCICTL2.all = 0x0002; //起用Receiver-buffer  interrupt，禁用SCITXBUF-register interrupt
• ScibRegs.SCICTL1.all = 0x0023; //停止复位SCI
• PieVectTable.SCIRXINTB = &SCI_RX_ISR; //SCI接收中断处理程序
• PieCtrlRegs.PIEIER9.bit.INTx3 = 1;  // SCIB接收中断使能
• IER |= 0x0100;          // enable PIEIER9, and INT9
• EINT;
• ERTM;//全局中断使能