[DemoCode下载] M261系列的IO输出输入演示

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

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * [url=home.php?mod=space&uid=895143]@version[/url]  V3.00

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Show how to set GPIO pin mode and use pin data input/output control.

 *

 * [url=home.php?mod=space&uid=17282]@CopyRight[/url] (C) 2019 Nuvoton Technology Corp. All rights reserved.

 *

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

#include <stdio.h>

#include "NuMicro.h"







void SYS_Init(void)

{



    /* Set PF multi-function pins for XT1_OUT(PF.2) and XT1_IN(PF.3) */

    SYS->GPF_MFPL = (SYS->GPF_MFPL & (~SYS_GPF_MFPL_PF2MFP_Msk)) | SYS_GPF_MFPL_PF2MFP_XT1_OUT;

    SYS->GPF_MFPL = (SYS->GPF_MFPL & (~SYS_GPF_MFPL_PF3MFP_Msk)) | SYS_GPF_MFPL_PF3MFP_XT1_IN;



    /*---------------------------------------------------------------------------------------------------------*/

    /* Init System Clock                                                                                       */

    /*---------------------------------------------------------------------------------------------------------*/



    /* Enable HIRC clock */

    CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);



    /* Wait for HIRC clock ready */

    CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);



    /* Select HCLK clock source as HIRC and HCLK clock divider as 1 */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));



    /* Enable HXT clock */

    CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);



    /* Wait for HXT clock ready */

    CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);



    /* Enable PLL */

    CLK->PLLCTL = CLK_PLLCTL_128MHz_HIRC;



    /* Waiting for PLL stable */

    CLK_WaitClockReady(CLK_STATUS_PLLSTB_Msk);



    /* Select HCLK clock source as PLL and HCLK source divider as 2 */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_PLL, CLK_CLKDIV0_HCLK(2));



    /* Enable UART module clock */

    CLK_EnableModuleClock(UART0_MODULE);



    /* Select UART module clock source as HIRC and UART module clock divider as 1 */

    CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART0SEL_HIRC, CLK_CLKDIV0_UART0(1));



    /*---------------------------------------------------------------------------------------------------------*/

    /* Init I/O Multi-function                                                                                 */

    /*---------------------------------------------------------------------------------------------------------*/



    /* Set multi-function pins for UART0 RXD and TXD */

    SYS->GPB_MFPH = (SYS->GPB_MFPH & (~(UART0_RXD_PB12_Msk | UART0_TXD_PB13_Msk))) | UART0_RXD_PB12 | UART0_TXD_PB13;



}



void UART0_Init(void)

{

    /*---------------------------------------------------------------------------------------------------------*/

    /* Init UART                                                                                               */

    /*---------------------------------------------------------------------------------------------------------*/

    /* Reset UART0 */

    SYS_ResetModule(UART0_RST);



    /* Configure UART0 and set UART0 baud rate */

    UART_Open(UART0, 115200);

}



/*---------------------------------------------------------------------------------------------------------*/

/*  Main Function                                                                                          */

/*---------------------------------------------------------------------------------------------------------*/

int32_t main(void)

{



    int32_t i32Err, i32TimeOutCnt;



    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Init System, peripheral clock and multi-function I/O */

    SYS_Init();



    /* Lock protected registers */

    SYS_LockReg();



    /* Init UART0 for printf */

    UART0_Init();



    printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %dHz\n", SystemCoreClock);



    printf("+-------------------------------------------------+\n");

    printf("|    PB.3(Output) and PD.7(Input) Sample Code     |\n");

    printf("+-------------------------------------------------+\n\n");



    /*-----------------------------------------------------------------------------------------------------*/

    /* GPIO Basic Mode Test --- Use Pin Data Input/Output to control GPIO pin                              */

    /*-----------------------------------------------------------------------------------------------------*/

    printf("  >> Please connect PB.3 and PD.7 first << \n");

    printf("     Press any key to start test by using [Pin Data Input/Output Control] \n\n");

    getchar();



    /* Configure PB.3 as Output mode and PD.7 as Input mode then close it */

    GPIO_SetMode(PB, BIT3, GPIO_MODE_OUTPUT);

    GPIO_SetMode(PD, BIT7, GPIO_MODE_INPUT);



    i32Err = 0;

    printf("GPIO PB.3(output mode) connect to PD.7(input mode) ......");



    /* Use Pin Data Input/Output Control to pull specified I/O or get I/O pin status */

    /* Set PB.3 output pin value is low */

    PB3 = 0;



    /* Set time out counter */

    i32TimeOutCnt = 100;



    /* Wait for PD.7 input pin status is low for a while */

    while(PD7 != 0)

    {

        if(i32TimeOutCnt > 0)

        {

            i32TimeOutCnt--;

        }

        else

        {

            i32Err = 1;

            break;

        }

    }



    /* Set PB.3 output pin value is high */

    PB3 = 1;



    /* Set time out counter */

    i32TimeOutCnt = 100;



    /* Wait for PD.7 input pin status is high for a while */

    while(PD7 != 1)

    {

        if(i32TimeOutCnt > 0)

        {

            i32TimeOutCnt--;

        }

        else

        {

            i32Err = 1;

            break;

        }

    }



    /* Print test result */

    if(i32Err)

    {

        printf("  [FAIL].\n");

    }

    else

    {

        printf("  [OK].\n");

    }



    /* Configure PB.3 and PD.7 to default Quasi-bidirectional mode */

    GPIO_SetMode(PB, BIT3, GPIO_MODE_QUASI);

    GPIO_SetMode(PD, BIT7, GPIO_MODE_QUASI);



    while(1);



}



/*** (C) COPYRIGHT 2019 Nuvoton Technology Corp. ***/