Other Parts Discussed in Thread: C2000WARE
Dear team:
My customer uses the Lin port as SCI function according to the following configuration. When the sysclk clock is tested at 100MHz, the pin has no data, and the oscilloscope can not see the waveform.
Is there a problem with the configuration?
CpuSysRegs.PCLKCR19.bit.LIN_A = 1; // LIN Drv_GPIO_SetupPinMux(33, GPIO_MUX_CPU1, 6);//LIN-A RX Drv_GPIO_SetupPinOptions(33, GPIO_INPUT, (GPIO_PULLUP + GPIO_ASYNC)); Drv_GPIO_SetupPinMux(58, GPIO_MUX_CPU1, 9);//LIN-A TX Drv_GPIO_SetupPinOptions(58, GPIO_OUTPUT, GPIO_PULLUP); //Allow write to protected registers EALLOW; LinaRegs.SCIGCR0.bit.RESET = 0; //Into reset LinaRegs.SCIGCR0.bit.RESET = 1; //Out of reset LinaRegs.SCIGCR1.bit.SWnRST = 0; //Into software reset //SCI Configurations LinaRegs.SCIGCR1.bit.COMMMODE = 0; //Idle-Line Mode LinaRegs.SCIGCR1.bit.TIMINGMODE = 1; //Asynchronous Timing LinaRegs.SCIGCR1.bit.PARITYENA = 1; //Parity enabled. A parity bit is generated during transmission and is expected during reception LinaRegs.SCIGCR1.bit.PARITY = 0; //Odd Parity LinaRegs.SCIGCR1.bit.STOP = 0; //One Stop Bit LinaRegs.SCIGCR1.bit.CLK_MASTER = 1; //Enable SCI Clock LinaRegs.SCIGCR1.bit.LINMODE = 0; //SCI Mode LinaRegs.SCIGCR1.bit.SLEEP = 0; //Ensure Out of Sleep LinaRegs.SCIGCR1.bit.MBUFMODE = 1; //The multi-buffer mode is enabled. LinaRegs.SCIGCR1.bit.LOOPBACK = 0; //External Loopback 0 LinaRegs.SCIGCR1.bit.CONT = 1; //Continue on Suspend //Set baudrate LinaRegs.BRSR.bit.M = 8; LinaRegs.BRSR.bit.SCI_LIN_PSL = 324; //Baud = 9600bps(9600bps) LinaRegs.BRSR.bit.SCI_LIN_PSH = 0; LinaRegs.SCIGCR1.bit.RXENA = 1; //Enable RX LinaRegs.SCIGCR1.bit.TXENA = 1; //Enable TX LinaRegs.SCIPIO0.bit.RXFUNC = 1; // configure the LINRX and LINTX pins for SCI LinaRegs.SCIPIO0.bit.TXFUNC = 1; //Ensure IODFT is disabled LinaRegs.IODFTCTRL.bit.IODFTENA = 0x0; //Set transmission length LinaRegs.SCIFORMAT.bit.CHAR = 7; //Eight bits LinaRegs.SCIFORMAT.bit.LENGTH = 0; //4 byte 3 LinaRegs.SCIGCR1.bit.SWnRST = 1; //bring out of software reset //Disable write to protected registers EDIS;
Best regards