[DemoCode下载] NM1200GPIO演示

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

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

 * [url=home.php?mod=space&uid=895143]@version[/url]  V2.10

 * $Date: 15/04/08 4:36p $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Use GPIO driver to control the GPIO pin direction, control their

 *           high/low state, and how to use GPIO interrupts.

 *

 * @note

 * Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.

 *

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

#include <stdio.h>

#include "NM1200_NM1100.h"

#include "GPIO.h"



/**

 * @brief       Port0/Port1 IRQ

 *

 * @param       None

 *

 * [url=home.php?mod=space&uid=266161]@return[/url]      None

 *

 * [url=home.php?mod=space&uid=1543424]@Details[/url]     The Port0/Port1 default IRQ, declared in startup_NM1200_NM1100.s.

 */

void GPIO01_IRQHandler(void)

{

    /* To check if P1.5 interrupt occurred */

    if (P1->INTSRC & BIT5) {

        P1->INTSRC = BIT5;

        P30 = P30 ^ 1;

        printf("P1.5 INT occurred. \n");



    } else {

        /* Un-expected interrupt. Just clear all PORT0, PORT1 interrupts */

        P0->INTSRC = P0->INTSRC;

        P1->INTSRC = P1->INTSRC;

        printf("Un-expected interrupts. \n");

    }

}





/**

 * @brief       Port2/Port3/Port4 IRQ

 *

 * @param       None

 *

 * @return      None

 *

 * @details     The Port2/Port3/Port4 default IRQ, declared in startup_NM1200_NM1100.s.

 */

void GPIO234_IRQHandler(void)

{

    /* To check if P2.2 interrupt occurred */

    if (P2->INTSRC & BIT2) {

        P2->INTSRC = BIT2;

        P30 = P30 ^ 1;

        printf("P2.2 INT occurred. \n");

    } else {

        /* Un-expected interrupt. Just clear all PORT2, PORT3 and PORT4 interrupts */

        P2->INTSRC = P2->INTSRC;

        P3->INTSRC = P3->INTSRC;

        P4->INTSRC = P4->INTSRC;

        printf("Un-expected interrupts. \n");

    }

}





/**

 * @brief       External INT0 IRQ

 *

 * @param       None

 *

 * @return      None

 *

 * @details     The External INT0(P3.2) default IRQ, declared in startup_NM1200_NM1100.s.

 */

void EINT0_IRQHandler(void)

{

    /* For P3.2, clear the INT flag */

    P3->INTSRC = BIT2;

    P30 = P30 ^ 1;

    printf("P3.2 EINT0 occurred. \n");

}





/**

 * @brief       External INT1 IRQ

 *

 * @param       None

 *

 * @return      None

 *

 * @details     The External INT1(P5.2) default IRQ, declared in startup_NM1200_NM1100.s.

 */

void EINT1_IRQHandler(void)

{

    /* For P5.2, clear the INT flag */

    P5->INTSRC = BIT2;

    P30 = P30 ^ 1;

    printf("P5.2 EINT1 occurred. \n");

}



void SYS_Init(void)

{

    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Read User Config to select internal high speed RC */

    SystemInit();



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

    /* Init System Clock                                                                                       */

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



    /* Enable HIRC */

    CLK->PWRCTL |= CLK_PWRCTL_HIRCEN_Msk;



    /* Waiting for clock ready */

    CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);



    /* Switch HCLK clock source to XTL */

    CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_XTAL,CLK_CLKDIV_HCLK(1));



    /* STCLK to XTL STCLK to HCLK/2 */

    CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);



    /* Enable IP clock */

    CLK_EnableModuleClock(UART0_MODULE);



    /* Select IP clock source */

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



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

    /* Init I/O Multi-function                                                                                 */

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

    /* Set P0 multi-function pins for UART RXD and TXD */

    SYS->P0_MFP &= ~(SYS_MFP_P01_Msk | SYS_MFP_P00_Msk);

    SYS->P0_MFP |= (SYS_MFP_P01_RXD | SYS_MFP_P00_TXD);



    /* Set P3 multi-function pins for Clock Output */

    SYS->P3_MFP = SYS_MFP_P36_CKO;



    /* To update the variable SystemCoreClock */

    SystemCoreClockUpdate();



    /* Lock protected registers */

    SYS_LockReg();

}



void UART_Init(void)

{

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

    /* Init UART                                                                                               */

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

    /* Reset IP */

    SYS_ResetModule(SYS_IPRST1_UART0RST_Msk);



    /* Configure UART and set UART Baudrate */

    UART_Open(UART0, 115200);



}



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

/* MAIN function                                                                                           */

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

int main (void)

{

    int32_t i32Err;



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

    SYS_Init(); //In the end of SYS_Init() will issue SYS_LockReg() to lock protected register. If user want to write protected register, please issue SYS_UnlockReg() to unlock protected register.



    /* Init UART for printf */

    UART_Init();



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



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

    printf("|       GPIO Driver Sample Code       | \n");

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



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

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

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

    printf("  >> Please connect P1.0 and P3.4 first << \n");

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

    getchar();



    /* Configure P1.0 as Output mode and P3.4 as Input mode then close it */

    GPIO_SetMode(P1, BIT0, GPIO_MODE_OUTPUT);

    GPIO_SetMode(P3, BIT4, GPIO_MODE_INPUT);



    i32Err = 0;

    printf("  GPIO Output/Input test ...... \n");



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

    P10 = 0;

    if (P34 != 0) {

        i32Err = 1;

    }



    P10 = 1;

    if (P34 != 1) {

        i32Err = 1;

    }



    if ( i32Err ) {

        printf("  [FAIL] --- Please make sure P1.0 and P3.4 are connected. \n");

    } else {

        printf("  [OK] \n");

    }



    /* Configure P1.0 and P3.4 to default Quasi-bidirectional mode */

    GPIO_SetMode(P1, BIT0, GPIO_MODE_QUASI);

    GPIO_SetMode(P3, BIT4, GPIO_MODE_QUASI);





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

    /* GPIO Interrupt Function Test                                                                        */

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

    printf("\n  P15, P22, P32(INT0) and P52(INT1) are used to test interrupt\n  and control LEDs(P30)\n");



    /*Configure P30 for LED control */

    GPIO_SetMode(P3, BIT0, GPIO_MODE_OUTPUT);



    /* Configure P1.5 as Input mode and enable interrupt by rising edge trigger */

    GPIO_SetMode(P1, BIT5, GPIO_MODE_INPUT);

    GPIO_EnableInt(P1, 5, GPIO_INT_RISING);

    NVIC_EnableIRQ(GPIO01_IRQn);





    /*  Configure P2.2 as Quasi-bidirection mode and enable interrupt by falling edge trigger */

    GPIO_SetMode(P2, BIT2, GPIO_MODE_QUASI);

    GPIO_EnableInt(P2, 2, GPIO_INT_FALLING);

    NVIC_EnableIRQ(GPIO234_IRQn);



    /* Configure P3.2 as EINT0 pin and enable interrupt by falling edge trigger */

    GPIO_SetMode(P3, BIT2, GPIO_MODE_INPUT);

    GPIO_EnableEINT0(P3, 2, GPIO_INT_FALLING);

    NVIC_EnableIRQ(EINT0_IRQn);



    /* Configure P5.2 as EINT1 pin and enable interrupt by rising and falling edge trigger */

    GPIO_SetMode(P5, BIT2, GPIO_MODE_INPUT);

    GPIO_EnableEINT1(P5, 2, GPIO_INT_BOTH_EDGE);

    NVIC_EnableIRQ(EINT1_IRQn);



    /* Enable interrupt de-bounce function and select de-bounce sampling cycle time */

    GPIO_SET_DEBOUNCE_TIME(GPIO_DBNCECON_DBCLKSRC_HCLK, GPIO_DBNCECON_DBCLKSEL_1);

    GPIO_ENABLE_DEBOUNCE(P1, BIT5);

    GPIO_ENABLE_DEBOUNCE(P2, BIT2);

    GPIO_ENABLE_DEBOUNCE(P3, BIT2);

    GPIO_ENABLE_DEBOUNCE(P5, BIT2);



    /* Waiting for interrupts */

    while (1);



}