AT32F415 的Demo：
将附件解压到Project\AT_START_F415\Examples 即可使用；
目前Demo 是通过 “USER” 按键触发跳转到Bootloader。
/* Includes ------------------------------------------------------------------*/
#include <stdio.h>
#include "at32f4xx.h"
#include "at32_board.h"
/** @addtogroup AT32F415_StdPeriph_Templates
* @{
*/
/** @addtogroup Template
* @{
*/
/* Private define ------------------------------------------------------------*/
#define DELAY 100
#define FAST 1
#define SLOW 4
#define BOOTLOADER_ADDRESS 0x1FFFAC00
#define BKP_JUMP_FLAG 0x5AA5
#define SET_MSP(dwValue) __ASM volatile ("msr msp, "#dwValue)
void (*pfTarget)(void);
/* Extern variables ---------------------------------------------------------*/
extern GPIO_Type *BUTTON_GPIO_PORT[BUTTON_NUM];
extern uint16_t BUTTON_GPIO_PIN[BUTTON_NUM];
extern uint32_t BUTTON_GPIO_RCC_CLK [BUTTON_NUM];
/* Private variables ---------------------------------------------------------*/
uint16_t BUTTON_EXTI_LINE[BUTTON_NUM] = {EXTI_Line0, EXTI_Line13};
uint16_t BUTTON_EXTI_IRQ[BUTTON_NUM] = {EXTI0_IRQn, EXTI15_10_IRQn};
uint8_t BUTTON_EXTI_SOURCE_PORT[BUTTON_NUM] = {GPIO_PortSourceGPIOA, GPIO_PortSourceGPIOC};
uint8_t BUTTON_EXTI_SOURCE_PIN[BUTTON_NUM] = {GPIO_PinsSource0, GPIO_PinsSource13};
uint8_t gUpdateFlag = 0;
BUTTON_Type gButtonType = BUTTON_WAKEUP;
uint8_t gSpeed = FAST;
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/**
* @brief Configure Button EXTI
* @param Button: Specifies the Button to be configured.
* @retval None
*/
void BUTTON_EXTI_Init(BUTTON_Type button)
{
EXTI_InitType EXTI_InitStructure;
NVIC_InitType NVIC_InitStructure;
GPIO_EXTILineConfig(BUTTON_EXTI_SOURCE_PORT[button], BUTTON_EXTI_SOURCE_PIN[button]);
EXTI_StructInit(&EXTI_InitStructure);
EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[button];
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_LineEnable = ENABLE;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_Init(&EXTI_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = BUTTON_EXTI_IRQ[button];
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @brief Button EXTI0 Interrupt Handler
* @param None
* @retval None
*/
void EXTI0_IRQHandler(void)
{
Delay_ms(5);
EXTI_ClearIntPendingBit(BUTTON_EXTI_LINE[gButtonType]);
if ((GPIO_ReadInputData(BUTTON_GPIO_PORT[gButtonType]) & BUTTON_GPIO_PIN[gButtonType]) == \
BUTTON_GPIO_PIN[gButtonType])
{
gUpdateFlag = 1;
}
}
/**
* @brief Clear all System Status
1. Close All Peripherals Clock
2. Close PLL
3. Disable All interrupt
4. Clear All Pending Interrupt Flag
* @param None
* @retval None
*/
void APP_ClearSysStatus()
{
/*Close Peripherals Clock*/
RCC->APB2RST = 0xFFFFFFFF;
RCC->APB2RST = 0;
RCC->APB1RST = 0xFFFFFFFF;
RCC->APB1RST = 0;
RCC->APB2EN = 0;
RCC->APB1EN = 0;
RCC->AHBRST = 0xFFFFFFFF;
RCC->AHBRST = 0;
/*close USB clock*/
RCC_AHBPeriphClockCmd(RCC_AHBPERIPH_USB, DISABLE);
/*Close PLL*/
/* Reset SW, AHBPSC, APB1PSC, APB2PSC, ADCPSC and CLKOUT bits */
RCC_Reset();
/*Colse Systick*/
SysTick->CTRL = 0;
/*Disable ALL interrupt && Pending Interrupt Flag*/
/*这里需要根据用户开启的外设进行清除中断和挂起的中断标志*/
/*
user add code...
*/
}
/*
1. Close All Peripherals Clock
2. Close PLL
3. Disable All interrupt
4. Clear All Pending Interrupt Flag
*/
/**
* @brief Jump to bootloader
* @param None
* @retval None
*/
void APPJumpToBootloader(void)
{
uint32_t dwStkPtr, dwJumpAddr;
dwStkPtr = *(uint32_t *)BOOTLOADER_ADDRESS;
dwJumpAddr = *(uint32_t *)(BOOTLOADER_ADDRESS + sizeof(uint32_t));
/*跳转之前，需要保证所有外设Clock 关闭，PLL 关闭，关闭所有中断，清除所有的中断挂起标志*/
SET_MSP(dwStkPtr);
pfTarget = (void (*)(void))dwJumpAddr;
pfTarget();
}
/**
* @brief Main Function.
* @param None
* @retval None
*/
int main(void)
{
RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_AFIO, ENABLE);
AT32_Board_Init();
BUTTON_EXTI_Init(gButtonType);
for(;;)
{
if ( gUpdateFlag == 1 )
{
/*Jump to System Memory*/
APP_ClearSysStatus();
APPJumpToBootloader();
}
}
}
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