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TMS320F28062 芯片，采用双串口工作，发送与接收都采用中断方式，。SCIA发送与接收可以正常工作，SCIB发送数据正常 ，问题是SCIB接收数据没有产生中断，请问一下，SCIB在初始化配置与SCIA有什么 不同，需要注意什么地方？
先用示波器测下SCIB对应的RX引脚，看是否有数据发过来。
数据有的，波形也是正常的
那相应的gpio是否配成成uart功能呢
配置了，所有配置参照SCIA配置的
// GPIO_setMode(obj->gpioHandle,GPIO_Number_18,GPIO_18_Mode_SPICLKA); GPIO_setDirection(obj->gpioHandle,GPIO_Number_18,GPIO_Direction_Output); GPIO_setMode(obj->gpioHandle,GPIO_Number_18,GPIO_18_Mode_SCITXDB);
// SPIA CS->Motor1_DRV8301// GPIO_setMode(obj->gpioHandle,GPIO_Number_19,GPIO_19_Mode_SPISTEA_NOT);
GPIO_setPullup(obj->gpioHandle, GPIO_Number_19, GPIO_Pullup_Enable); GPIO_setQualification(obj->gpioHandle, GPIO_Number_19, GPIO_Qual_ASync); GPIO_setMode(obj->gpioHandle,GPIO_Number_19,GPIO_19_Mode_SCIRXDB);
您中断函数是怎么写的呢？
有使用FIFO功能？那是否有清标志
SciaRegs.SCIFFRX.bit.RXFFOVRCLR=1; // Clear Overflow flag SciaRegs.SCIFFRX.bit.RXFFINTCLR=1; // Clear Interrupt flag PieCtrlRegs.PIEACK.all|=0x100; // Issue PIE ack位
例程：C:\ti\controlSUITE\device_support\f2806x\v151\F2806x_examples_ccsv5\scia_loopback_interrupts
清标志的，问题是一次中断也没进。
__interrupt void sciaRxFifoIsrB(void){ uint16_t rx2_status=0; test_c4 = 8 ; rece2_time=0; rx2_status=SCI_getDataBlocking(mySciB); /* if(rece2_size<(p_len-1)) { if(r2_mark==0) { rdataA2[rece2_size] = (rx2_status<<8) & 0xff00 ; r2_mark=1; } else { rdataA2[rece2_size] = rdataA2[rece2_size] + rx2_status; rece2_size=rece2_size+1; r2_mark=0; } } */ SCI_clearRxFifoOvf(mySciB); // Clear Overflow flag SCI_clearRxFifoInt(mySciB); // Clear Interrupt flag PIE_clearSCIInts(myPie); return;}
这个是串口配置
void mx_scib_Init(void){ mySciB = SCI_init((void *)SCIB_BASE_ADDR, sizeof(SCI_Obj)); // 1 stop bit, No loopback // No parity,8 char bits, // async mode, idle-line protocol SCI_disableParity(mySciB); //Odd parity SCI_setNumStopBits(mySciB, SCI_NumStopBits_One); //One stop bit SCI_setCharLength(mySciB, SCI_CharLength_8_Bits);//8 bit
// enable TX, RX, internal SCICLK, // Disable RX ERR, SLEEP, TXWAKE SCI_enableTx(mySciB); //enable TX, SCI_enableRx(mySciB); //enable RX, SCI_enableTxInt(mySciB); //enable TX interrupt SCI_enableRxInt(mySciB); //enable RX interrupt SCI_enableLoopBack(mySciB); SCI_setBaudRate(mySciB,SCI_BaudRate_9_6_kBaud); SCI_disableLoopBack(mySciB); // Enable loop back SCI_enable(mySciB); return;}
检查下中断有无使能，确保确实打开了串口时钟。
中断和时钟都开启了，数据发送是正常的，也进入了中断，就是接收不行，不进入中断
