[参考译文] TMS570LS3137：SPI CLK 脉冲问题

void writeFRAM(uint8 Ad2, uint8 Ad1, uint8 Ad0, uint8 dat)
{
    spiDAT1_t dataconfig1_t;

    dataconfig1_t.CS_HOLD = 1;      // The chip select signal is deactivated at the end of a transfer after the T2CDELAY time has passed.
    dataconfig1_t.WDEL    = 0;       // After a transaction, WDELAY of the corresponding data format will be loaded into the delay counter.
    dataconfig1_t.DFSEL   = SPI_FMT_0;  // Data word format 0 is selected.
    dataconfig1_t.CSNR    = 0xFE;       // Chip select (CS) number.

    const uint16 WREN = 0x06;                                   //WREN: Write enable command.
    const uint16 WRITE = 0x02;                                  //WRITE: Write command.
    uint16 TX_Data_Master[5] = {WRITE, Ad2, Ad1, Ad0, dat};          //Set write command and direction in the output buffer.

    spiTransmitData(spiREG3, &dataconfig1_t, 1, (uint16*)&WREN);           //WREN command to enable writing operations.
    spiTransmitData(spiREG3, &dataconfig1_t, 5, TX_Data_Master); //WREN command to enable writing operations.
}

uint8 readFRAM(uint8 Ad2, uint8 Ad1, uint8 Ad0)
{
    spiDAT1_t dataconfig1_t;

    dataconfig1_t.CS_HOLD = 1;          // The chip select signal is deactivated at the end of a transfer after the T2CDELAY time has passed.
    dataconfig1_t.WDEL    = 0;          // After a transaction, WDELAY of the corresponding data format will be loaded into the delay counter.
    dataconfig1_t.DFSEL   = SPI_FMT_0;  // Data word format 0 is selected.
    dataconfig1_t.CSNR    = 0xFE;       // Chip select (CS) number.

    const uint16 READ = 0x03;                                  //READ: Command to read an specific external memory location.
    uint16 TX_Data_Master[4] = {READ, Ad2, Ad1, Ad0};          //Set read command and direction in the output buffer.
    uint8 data = 0;

    spiTransmitData(spiREG3, &dataconfig1_t, 4, TX_Data_Master); //WREN command to enable writing operations.
    spiReceiveData(spiREG3, &dataconfig1_t, 1, (uint16 *) data);

    return data;
}