掉电检测

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

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

 * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00

 * $Revision: 11 $

 * $Date: 15/06/23 1:37p $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    Sample code which implements a function to test system state before

 *           entering power-down mode. If a system consumes more power than

 *           expected in power-down mode, this function can be used to check if

 *           there is any system setting that may cause power leakage.

 *

 * @note

 * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.

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

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdint.h>

#include "Nano1X2Series.h"

#include "sys.h"



#ifdef __DEBUG_MSG

#define DEBUG_MSG   printf

#else

#define DEBUG_MSG(...)

#endif





/* External functions */





/* Global variables */

__IO int32_t   _Wakeup_Flag = 0;    /* 1 indicates system wake up from power down mode */

__IO uint32_t  _Pin_Setting[11];    /* store Px_H_MFP and Px_L_MFP */

__IO uint32_t  _PullUp_Setting[6];  /* store GPIOx_PUEN */







/**

  * @brief  Store original setting of multi-function pin selection.

  * @param  None.

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

  */

void SavePinSetting()

{

    /* Save Pin selection setting */

    _Pin_Setting[0] = SYS->PA_L_MFP;

    _Pin_Setting[1] = SYS->PA_H_MFP;

    _Pin_Setting[2] = SYS->PB_L_MFP;

    _Pin_Setting[3] = SYS->PB_H_MFP;

    _Pin_Setting[4] = SYS->PC_L_MFP;

    _Pin_Setting[5] = SYS->PC_H_MFP;

    _Pin_Setting[6] = SYS->PD_L_MFP;

    _Pin_Setting[7] = SYS->PD_H_MFP;

    _Pin_Setting[8] = SYS->PE_L_MFP;

    _Pin_Setting[9] = SYS->PE_H_MFP;

    _Pin_Setting[10] = SYS->PF_L_MFP;



    /* Save Pull-up setting */

    _PullUp_Setting[0] =  PA->PUEN;

    _PullUp_Setting[1] =  PB->PUEN;

    _PullUp_Setting[2] =  PC->PUEN;

    _PullUp_Setting[3] =  PD->PUEN;

    _PullUp_Setting[4] =  PE->PUEN;

    _PullUp_Setting[5] =  PF->PUEN;

}







/**

  * @brief  Save multi-function pin setting and then go to power down.

  * @param  None.

  * @return None.

  */

void Enter_PowerDown()

{

    /* Back up original setting */

    SavePinSetting();



    /* Set function pin to GPIO mode */

    SYS->PA_L_MFP = 0;

    SYS->PA_H_MFP = 0;

    SYS->PB_L_MFP = 0;

    //SYS->PB_H_MFP = 0;

    SYS->PB_H_MFP = (SYS_PB_H_MFP_PB13_MFP_UART0_RX | SYS_PB_H_MFP_PB14_MFP_UART0_TX);

    SYS->PC_L_MFP = 0;

    SYS->PC_H_MFP = 0;

    SYS->PD_L_MFP = 0;

    SYS->PD_H_MFP = 0;

    SYS->PE_L_MFP = 0;

    SYS->PE_H_MFP = 0;

    //SYS->PF_L_MFP = 0x0000FF00;   // exclude GPF3:HXT_OUT, GPF2:HXT_IN

    SYS->PF_L_MFP = 0x00FFFF00; // exclude GPF5:ICE_DAT, GPF4:ICE_CLK, GPF3:HXT_OUT, GPF2:HXT_IN



    /* Enable GPIO pull up */

    PA->PUEN = 0xFFFF;

    PB->PUEN = 0xFFFF;

    PC->PUEN = 0xFFFF;

    PD->PUEN = 0xFFFF;

    PE->PUEN = 0xFFFF;

    //PF->PUEN = 0x0033;      /* exclude GPF3 and GPF2 which are HXT OUT/IN */

    PF->PUEN = 0x0003;      /* exclude GPF5:ICE_DAT, GPF4:ICE_CLK, GPF3:HXT_OUT, GPF2:HXT_IN */



    //CLK->PWRCTL |= CLK_PWRCTL_PD_WK_IE_Msk;  /* Enable wake up interrupt source */

    //NVIC_EnableIRQ(PDWU_IRQn);             /* Enable IRQ request for PDWU interrupt */



    SYS_UnlockReg();

    SCB->SCR = SCB_SCR_SLEEPDEEP_Msk;

    CLK->PWRCTL |= (CLK_PWRCTL_PD_EN_Msk | CLK_PWRCTL_WK_DLY_Msk );



    //__WFI();   /* system really enter power down here ! */

}





void PowerDown_Check()

{

    uint32_t i,j;

    volatile uint32_t Tmp_NVIC_ISER;

    uint32_t gpio_error_count = 0;

    char *symbo_gpio[6] = {"A", "B", "C", "D", "E", "F"};

    GPIO_T *tGPIO;

    uint32_t SYS_MFP = 0xffffffff;



    printf("\n/***** PowerDown Check *****/");



    printf("\n/***** GPIO Check: *****/");



    //save NVIC setting

    Tmp_NVIC_ISER = NVIC->ISER[0];



    //disables a device-specific interrupt in the NVIC interrupt controller

    NVIC->ICER[0] = 0xFFFFFFFF;



    for(j = 0; j < 11; j++) {

        SYS_MFP = *((volatile unsigned int *)(SYS_BASE + 0x30 + (j *4)));



        for(i = 0; i < 8; i++) {

            if(SYS_MFP & (0x7 << (i*4))) {

                gpio_error_count++;

                printf("\nGP%s Pin %d not set GPIO !!", symbo_gpio[(j/2)], (i+(8*(j%2))) );

            }

        }

    }



    if( (SYS->PF_L_MFP & SYS_PF_L_MFP_PF2_MFP_XT1_IN) != SYS_PF_L_MFP_PF2_MFP_XT1_IN) {

        printf("\nGPF Pin 2 not set HXT_OUT !!!");

        printf("\nPlease Check GPF Pin 2 not connect crystal !!!");

    }



    if( (SYS->PF_L_MFP & SYS_PF_L_MFP_PF3_MFP_XT1_OUT) != SYS_PF_L_MFP_PF3_MFP_XT1_OUT) {

        printf("\nGPF Pin 3 not set HXT_IN !!!");

        printf("\nPlease Check GPF Pin 3 not connect crystal !!!");

    }



    for(j = 0; j < 6; j++) {

        tGPIO =(GPIO_T*)((uint32_t)PA + (j * (0x40)));



        for(i = 0; i < 16; i++) {

            if((j == 4) & (i > 9)) // GPE

                break;



            if((j == 5) & (i > 5)) // GPF

                break;



            if(!(tGPIO->PIN & (1 << i))) {

                gpio_error_count++;

                printf("\nGP%s Pin %d can not pull high!!", symbo_gpio[j], i);

            }

        }

    }



    if(gpio_error_count)

        printf("\nGPIO Check fail !!");

    else

        printf("\nGPIO Check pass");



    printf("\n");



    printf("\n/***** Clock Check: *****/");



    if(CLK->PWRCTL & CLK_PWRCTL_HXT_EN)

        printf("\nHXT Enable");

    else

        printf("\nHXT Disable");



    if(CLK->PWRCTL & CLK_PWRCTL_LXT_EN)

        printf("\nLXT Enable");

    else

        printf("\nLXT Disable");



    if(CLK->PWRCTL & CLK_PWRCTL_HIRC_EN)

        printf("\nHIRC Enable");

    else

        printf("\nHIRC Disable");



    if(CLK->PWRCTL & CLK_PWRCTL_LIRC_EN)

        printf("\nLIRC Enable");

    else

        printf("\nLIRC Disable");



    printf("\n");

    printf("\n/***** Power Down setting check: *****/");

    if(CLK->PWRCTL & CLK_PWRCTL_PWRDOWN_EN)

        printf("\nChip Power-down mode Enable ");

    else

        printf("\nChip Power-down mode Disable !!!");



    if(SCB->SCR & 0x04)

        printf("\nSCB->SCR set (0x%x) : ok", SCB->SCR);

    else

        printf("\nSCB->SCR set (0x%x) : error", SCB->SCR);



    //Restore NVIC->ISER setting

    NVIC->ISER[0] = Tmp_NVIC_ISER;



    printf("\n");

    printf("\n/***** Wake-up setting check: *****/");

    if(CLK->PWRCTL & CLK_PWRCTL_DELY_EN)

        printf("\nWake-up Delay Counter Enable");

    else

        printf("\nWake-up Delay Counter Disable");



    if(CLK->PWRCTL & CLK_PWRCTL_WAKEINT_EN)

        printf("\nPower-down Mode Wake-up Interrupt Enable");

    else

        printf("\nPower-down Mode Wake-up Interrupt Disable");



    if( NVIC->ISER[0] & (1 << ((uint32_t)(PDWU_IRQn) & 0x1F)) )

        printf("\nEnable PDWU_IRQn request for PDWU interrupt");

    else

        printf("\nDisable PDWU_IRQn request for PDWU interrupt");



    printf("\n");

    printf("\n/***** ISR check: *****/");

    if(NVIC_GetPendingIRQ(PDWU_IRQn))

        printf("\nPowerDown WakeUp Interrupt status is pending. (check fail)");

    else

        printf("\nPowerDown WakeUp Interrupt status is not pending. (check ok)");



    if(CLK->WK_INTSTS & 0x1)

        printf("\nWake-up Interrupt Status is set. (check fail)");

    else

        printf("\nWake-up Interrupt Status is not set. (check ok)");



    printf("\n");

    printf("\n/***** PowerDown Check End *****/");

}



void SYS_Init(void)

{

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

    /* Init System Clock                                                                                       */

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

    /* Unlock protected registers */

    SYS_UnlockReg();



    /* Enable IP clock */

    CLK->APBCLK |= CLK_APBCLK_UART0_EN; // UART0 Clock Enable



    /* Select IP clock source */

    CLK->CLKSEL1 &= ~CLK_CLKSEL1_UART_S_Msk;

    CLK->CLKSEL1 |= (0x3 << CLK_CLKSEL1_UART_S_Pos);// Clock source from HIRC



    /* Update System Core Clock */

    /* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */

    SystemCoreClockUpdate();



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

    /* Init I/O Multi-function                                                                                 */

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

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

    SYS->PB_L_MFP &= ~(SYS_PB_L_MFP_PB0_MFP_Msk|SYS_PB_L_MFP_PB1_MFP_Msk);

    SYS->PB_L_MFP |=  (SYS_PB_L_MFP_PB0_MFP_UART0_TX|SYS_PB_L_MFP_PB1_MFP_UART0_RX);



    /* Lock protected registers */

    SYS_LockReg();



}



void UART0_Init()

{

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

    /* Init UART                                                                                               */

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

    UART_Open(UART0, 115200);

}



/**

  * @brief  Main routine.

  * @param  None.

  * @return None.

  */

int32_t main(void)

{

    SYS_Init();

    UART0_Init();



    /* Prepare to enter power down mode, to demo the usage of PowerDown_Check(),

       this function does not actually put this system to  power down mode  */

    Enter_PowerDown();

    /* Check system state before enter power down mode */

    PowerDown_Check();



}







/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/