[N32G45x] +突然烧录不了的解决方法

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/**

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

 * [url=home.php?mod=space&uid=187600]@author[/url] Nations

 * [url=home.php?mod=space&uid=895143]@version[/url] v1.0.0

 *

 * [url=home.php?mod=space&uid=17282]@CopyRight[/url] Copyright (c) 2019, Nations Technologies Inc. All rights reserved.

 */

#include "main.h"

#include <stdio.h>

#include <stdint.h>



/**

 * [url=home.php?mod=space&uid=247401]@brief[/url]  Inserts a delay time.

 * @param count specifies the delay time length.

 */

void Delay(uint32_t count)

{

    for (; count > 0; count--)

        ;

}

/**

 * [url=home.php?mod=space&uid=247401]@brief[/url]  Configures LED GPIO.

 * @param GPIOx x can be A to G to select the GPIO port.

 * @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.

 */

void LedInit(GPIO_Module* GPIOx, uint16_t Pin)

{

    GPIO_InitType GPIO_InitStructure;



    /* Check the parameters */

    assert_param(IS_GPIO_ALL_PERIPH(GPIOx));

        

                        //使用PB4作为IO。

                GPIO_ConfigPinRemap(GPIO_RMP_SW_JTAG_SW_ENABLE,ENABLE);

                RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_AFIO, ENABLE);



    /* Enable the GPIO Clock */

    if (GPIOx == GPIOA)

    {

        RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);

    }

    else if (GPIOx == GPIOB)

    {

        RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOB, ENABLE);

    }

    else if (GPIOx == GPIOC)

    {

        RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOC, ENABLE);

    }

    else if (GPIOx == GPIOD)

    {

        RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOD, ENABLE);

    }

    else if (GPIOx == GPIOE)

    {

        RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOE, ENABLE);

    }

    else if (GPIOx == GPIOF)

    {

        RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOF, ENABLE);

    }

    else

    {

        if (GPIOx == GPIOG)

        {

            RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOG, ENABLE);

        }

    }



    /* Configure the GPIO pin */

    if (Pin <= GPIO_PIN_ALL)

    {

        GPIO_InitStructure.Pin        = Pin;

        GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_Out_PP;

        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

        GPIO_InitPeripheral(GPIOx, &GPIO_InitStructure);

    }

}

/**

 * [url=home.php?mod=space&uid=247401]@brief[/url]  Turns selected Led on.

 * @param GPIOx x can be A to G to select the GPIO port.

 * @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.

 */

void LedOn(GPIO_Module* GPIOx, uint16_t Pin)

{

    GPIOx->PBSC = Pin;

}

/**

 * [url=home.php?mod=space&uid=247401]@brief[/url]  Turns selected Led Off.

 * @param GPIOx x can be A to G to select the GPIO port.

 * @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.

 */

void LedOff(GPIO_Module* GPIOx, uint16_t Pin)

{

    GPIOx->PBC = Pin;

}

/**

 * @brief  Turns selected Led on or off.

 * @param GPIOx x can be A to G to select the GPIO port.

 * @param Pin This parameter can be one of the following values:

 *  [url=home.php?mod=space&uid=2817080]@ARG[/url] GPIO_PIN_0~GPIO_PIN_15: set related pin on

 *      [url=home.php?mod=space&uid=2817080]@ARG[/url] (GPIO_PIN_0<<16)~(GPIO_PIN_15<<16): clear related pin off

 */

void LedOnOff(GPIO_Module* GPIOx, uint32_t Pin)

{

    GPIOx->PBSC = Pin;

}

/**

 * @brief  Toggles the selected Led.

 * @param GPIOx x can be A to G to select the GPIO port.

 * @param Pin This parameter can be GPIO_PIN_0~GPIO_PIN_15.

 */

void LedBlink(GPIO_Module* GPIOx, uint16_t Pin)

{

    GPIOx->POD ^= Pin;

}



/**

 * @brief Assert failed function by user.

 * @param file The name of the call that failed.

 * @param line The source line number of the call that failed.

 */

#ifdef USE_FULL_ASSERT

void assert_failed(const uint8_t* expr, const uint8_t* file, uint32_t line)

{

    while (1)

    {

    }

}

#endif // USE_FULL_ASSERT



/**

 * @brief  Main program.

 */

int main(void)

{

    /*SystemInit() function has been called by startup file startup_n32g45x.s*/



    LedInit(GPIOB, GPIO_PIN_ALL);

    LedInit(GPIOA, GPIO_PIN_ALL);

                LedOnOff(GPIOA, GPIO_PIN_ALL);

                LedOnOff(GPIOB, GPIO_PIN_ALL);        



    while (1)

    {

                        LedBlink(GPIOB,GPIO_PIN_ALL);

                        LedBlink(GPIOA,GPIO_PIN_ALL);

                        Delay(0x28FFFF);

    }

}

/**

 * @}

 */

1.板子上电之前先将BOOT0引脚接到3.3V高电平

2.板子上电

3.BOOT0置低电平

4.重新烧录程序