stm32f103 Bootload程序跑了RTT 要跳转到APP程序出错

发布于 2016-05-11 13:21:25 浏览：3153 订阅该版

2 个回答

aozima 2016-05-11

调网络不抓包，调I2C等时序不上逻辑分析仪，就像电工不用万用表！多用整理的好的文字，比截图更省流量，还能在整理过程中思考。

下面是F2和F4的，F1关于外设相关的需要小修改一下。
然后特别留意APP中是否又把中断向量给设回0了。

```c
/*
 * File      : rbl_jump_stm32f2_f4.c.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006 - 2015, RT-Thread Development Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2014-03-12     aozima       first version.
 * 2015-09-22     aozima       disable and clean up all interrupts.
 */

#include <stdint.h>

#include <board.h>

void jump_to_app(uint32_t app_address)
{
    typedef void (*_func)(void);

__disable_irq();

/* MCU peripherals re-initial. */
    {
        GPIO_InitTypeDef GPIO_InitStruct;

GPIO_InitStruct.GPIO_Mode  = GPIO_Mode_IN;
        GPIO_InitStruct.GPIO_Speed = GPIO_Speed_2MHz;
        GPIO_InitStruct.GPIO_OType = GPIO_OType_OD;
        GPIO_InitStruct.GPIO_PuPd  = GPIO_PuPd_NOPULL;

GPIO_InitStruct.GPIO_Pin = GPIO_Pin_All;
        GPIO_InitStruct.GPIO_Pin &= ~(GPIO_Pin_13 | GPIO_Pin_14); /* SWDIO/SWCLK */
        GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_InitStruct.GPIO_Pin = GPIO_Pin_All;
        GPIO_Init(GPIOB, &GPIO_InitStruct);
        GPIO_Init(GPIOC, &GPIO_InitStruct);
        GPIO_Init(GPIOD, &GPIO_InitStruct);
        GPIO_Init(GPIOE, &GPIO_InitStruct);
        GPIO_Init(GPIOF, &GPIO_InitStruct);
        GPIO_Init(GPIOG, &GPIO_InitStruct);
        GPIO_Init(GPIOH, &GPIO_InitStruct);
        GPIO_Init(GPIOI, &GPIO_InitStruct);

/* reset systick */
        SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;

/* disable all peripherals clock. */
        RCC->AHB1ENR = (1<<20); /* 20: F4 CCMDAT ARAMEN. */
        RCC->AHB2ENR = 0;
        RCC->AHB3ENR = 0;
        RCC->APB1ENR = 0;
        RCC->APB2ENR = 0;

/* Switch to default cpu clock. */
        RCC->CFGR = 0;
    } /* MCU peripherals re-initial. */

/* Disable MPU */
    MPU->CTRL &= ~MPU_CTRL_ENABLE_Msk;

/* disable and clean up all interrupts. */
    {
        int i;

for(i = 0; i < 8; i++)
        {
            /* disable interrupts. */
            NVIC->ICER[i] = 0xFFFFFFFF;

/* clean up interrupts flags. */
            NVIC->ICPR[i] = 0xFFFFFFFF;
        }
    }

/* Set new vector table pointer */
    SCB->VTOR = app_address;

/* reset register values */
    __set_BASEPRI(0);
    __set_FAULTMASK(0);

/* set up MSP and switch to it */
    __set_MSP(*(uint32_t*)app_address);
    __set_PSP(*(uint32_t*)app_address);
    __set_CONTROL(0);

/* ensure what we have done could take effect */
    __ISB();

__disable_irq();

/* never return */
    ((_func)(*(uint32_t*)(app_address + 4)))();
}
```