[PIC32/SAM] ATSAMD51 EVK评估板评测6串口发送

// *****************************************************************************

// *****************************************************************************

// Section: Included Files

// *****************************************************************************

// *****************************************************************************



#include <stddef.h>                     // Defines NULL

#include <stdbool.h>                    // Defines true

#include <stdlib.h>                     // Defines EXIT_FAILURE

#include "definitions.h"                // SYS function prototypes



char menu[]="How Are you?";

// *****************************************************************************

// *****************************************************************************

// Section: Main Entry Point

// *****************************************************************************

// *****************************************************************************



int main ( void )

{

    

    /* Initialize all modules */

    SYS_Initialize ( NULL );

    printf("\r\n--------------I am ATSAMD51--------\r\n");

    SERCOM2_USART_Write(menu,sizeof(menu));

    while ( true )

    {

        /* Maintain state machines of all polled MPLAB Harmony modules. */

        SYS_Tasks ( );

    }



    /* Execution should not come here during normal operation */



    return ( EXIT_FAILURE );

}





/*******************************************************************************

 End of File

*/

void SYS_Initialize ( void* data )

{

    /* MISRAC 2012 deviation block start */

    /* MISRA C-2012 Rule 2.2 deviated in this file.  Deviation record ID -  H3_MISRAC_2012_R_2_2_DR_1 */



    NVMCTRL_Initialize( );



    STDIO_BufferModeSet();





  

    PORT_Initialize();



    CLOCK_Initialize();









    SERCOM2_USART_Initialize();



    EVSYS_Initialize();











    NVIC_Initialize();



    /* MISRAC 2012 deviation block end */

}



void SERCOM2_USART_Initialize( void )

{

    /*

     * Configures USART Clock Mode

     * Configures TXPO and RXPO

     * Configures Data Order

     * Configures Standby Mode

     * Configures Sampling rate

     * Configures IBON

     */

    SERCOM2_REGS->USART_INT.SERCOM_CTRLA = SERCOM_USART_INT_CTRLA_MODE_USART_INT_CLK | SERCOM_USART_INT_CTRLA_RXPO(0x0UL) | SERCOM_USART_INT_CTRLA_TXPO(0x0UL) | SERCOM_USART_INT_CTRLA_DORD_Msk | SERCOM_USART_INT_CTRLA_IBON_Msk | SERCOM_USART_INT_CTRLA_FORM(0x0UL) | SERCOM_USART_INT_CTRLA_SAMPR(0UL) ;



    /* Configure Baud Rate */

    SERCOM2_REGS->USART_INT.SERCOM_BAUD = (uint16_t)SERCOM_USART_INT_BAUD_BAUD(SERCOM2_USART_INT_BAUD_VALUE);



    /*

     * Configures RXEN

     * Configures TXEN

     * Configures CHSIZE

     * Configures Parity

     * Configures Stop bits

     */

    SERCOM2_REGS->USART_INT.SERCOM_CTRLB = SERCOM_USART_INT_CTRLB_CHSIZE_8_BIT | SERCOM_USART_INT_CTRLB_SBMODE_1_BIT | SERCOM_USART_INT_CTRLB_RXEN_Msk | SERCOM_USART_INT_CTRLB_TXEN_Msk;



    /* Wait for sync */

    while((SERCOM2_REGS->USART_INT.SERCOM_SYNCBUSY) != 0U)

    {

        /* Do nothing */

    }





    /* Enable the UART after the configurations */

    SERCOM2_REGS->USART_INT.SERCOM_CTRLA |= SERCOM_USART_INT_CTRLA_ENABLE_Msk;



    /* Wait for sync */

    while((SERCOM2_REGS->USART_INT.SERCOM_SYNCBUSY) != 0U)

    {

        /* Do nothing */

    }

}