MSPM0L1306小练-串口初始化解析

1万 · 2023-4-27 13:37

static const DL_UART_Main_ClockConfig gUART_0ClockConfig = {//串口主时钟的配置

    .clockSel    = DL_UART_MAIN_CLOCK_BUSCLK,

    .divideRatio = DL_UART_MAIN_CLOCK_DIVIDE_RATIO_1

};



static const DL_UART_Main_Config gUART_0Config = {//串口0的配置

    .mode        = DL_UART_MAIN_MODE_NORMAL,

    .direction   = DL_UART_MAIN_DIRECTION_TX_RX,

    .flowControl = DL_UART_MAIN_FLOW_CONTROL_RTS_CTS,

    .parity      = DL_UART_MAIN_PARITY_NONE,

    .wordLength  = DL_UART_MAIN_WORD_LENGTH_8_BITS,

    .stopBits    = DL_UART_MAIN_STOP_BITS_ONE

};



SYSCONFIG_WEAK void SYSCFG_DL_UART_0_init(void)//串口的初始化

{

    DL_UART_Main_setClockConfig(UART_0_INST, (DL_UART_Main_ClockConfig *) &gUART_0ClockConfig);



    DL_UART_Main_init(UART_0_INST, (DL_UART_Main_Config *) &gUART_0Config);

    /*

     * Configure baud rate by setting oversampling and baud rate divisors.

     *  Target baud rate: 115200

     *  Actual baud rate: 115211.52

     */

    DL_UART_Main_setOversampling(UART_0_INST, DL_UART_OVERSAMPLING_RATE_16X);

    DL_UART_Main_setBaudRateDivisor(UART_0_INST,

        UART_0_IBRD_32_MHZ_115200_BAUD, UART_0_FBRD_32_MHZ_115200_BAUD);

    /* Configure Interrupts */

    DL_UART_Main_enableInterrupt(UART_0_INST,

                                 DL_UART_MAIN_INTERRUPT_RX |

                                 DL_UART_MAIN_INTERRUPT_RX_TIMEOUT_ERROR);



    /* Configure FIFOs */

    DL_UART_Main_enableFIFOs(UART_0_INST);

    DL_UART_Main_setRXFIFOThreshold(UART_0_INST, DL_UART_RX_FIFO_LEVEL_3_4_FULL);

    DL_UART_Main_setTXFIFOThreshold(UART_0_INST, DL_UART_TX_FIFO_LEVEL_1_2_EMPTY);



    DL_UART_Main_setRXInterruptTimeout(UART_0_INST, 15);



    DL_UART_Main_enable(UART_0_INST);

}