/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "fatfs.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdbool.h> // 解决 bool 类型未定义
#include <string.h>
#include "usart.h"
#include "rf433.h"
#include "ymodem.h"
#include "tmr.h"
#include "eeprom.h"
#include "power.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
typedef enum {
SYSTEM_ACTIVE, // 正常工作状态
SYSTEM_SLEEP_PENDING,// 准备进入睡眠
SYSTEM_SLEEPING // 睡眠状态
} SystemState;
volatile SystemState systemState = SYSTEM_ACTIVE;
volatile bool wakeupFlag = false;
#define WORK_DURATION 10000 // 正常工作持续时间(ms)
#define ENTER_CRITICAL_SECTION() __disable_irq()
#define EXIT_CRITICAL_SECTION() __enable_irq()
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
// uint8_t rx_buffer[RX_BUFFER_SIZE] = {0}; // 全局接收缓冲区
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
CRC_HandleTypeDef hcrc;
IWDG_HandleTypeDef hiwdg;
RTC_HandleTypeDef hrtc;
SPI_HandleTypeDef hspi1;
TIM_HandleTypeDef htim1;
UART_HandleTypeDef huart1;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_TIM1_Init(void);
static void MX_CRC_Init(void);
static void MX_RTC_Init(void);
static void MX_IWDG_Init(void);
/* USER CODE BEGIN PFP */
// main.c 顶部
//static void Wakeup_Init(void);
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
// memcpy((void*)0x20000000, (void*)0x08003000, 0xB4); //0x8000000,0x8000,0x20000000,0x1000
// __HAL_SYSCFG_REMAPMEMORY_SRAM(); //0x8004800，0x10000，0x200000C0，0x1F30
// __enable_irq();
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI1_Init();
MX_USART1_UART_Init();
MX_TIM1_Init();
MX_CRC_Init();
MX_FATFS_Init();
MX_RTC_Init();
MX_IWDG_Init();
/* USER CODE BEGIN 2 */
// Configure_Wakeup_Pin();
// MX_TIM17_Init();
// printf("ok...\r\n");
LED1_ON(); LED2_OFF();
LED_Control(4, 50, 50, 1);
// HAL_IWDG_Refresh(&hiwdg);
// FLASH_ReadData(FLASH_USER_START_ADDR, (uint8_t*)&readBuf, sizeof(readBuf));
// FLASH_ReadData(FLASH_USER_START_ADDR, &readBuffer, 1);
HAL_UART_Receive_IT(&huart1, rx_buffer, RX_BUFFER_SIZE); // 启动接收中断，长度为 RX_BUFFER_SIZE
// LED_Control(2,80,15,0);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
Key_Scan(); // 按键扫描
RF433(); // RF433处理
FLASH_Demo(); // Flash操作演示
ECU_Sleep_Wakeup();
// HAL_IWDG_Refresh(&hiwdg);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_RTC;
PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1;
PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief CRC Initialization Function
* @param None
* @retval None
*/
static void MX_CRC_Init(void)
{
/* USER CODE BEGIN CRC_Init 0 */
/* USER CODE END CRC_Init 0 */
/* USER CODE BEGIN CRC_Init 1 */
/* USER CODE END CRC_Init 1 */
hcrc.Instance = CRC;
hcrc.Init.DefaultInitValueUse = DEFAULT_INIT_VALUE_ENABLE;
hcrc.Init.InputDataInversionMode = CRC_INPUTDATA_INVERSION_NONE;
hcrc.Init.OutputDataInversionMode = CRC_OUTPUTDATA_INVERSION_DISABLE;
hcrc.InputDataFormat = CRC_INPUTDATA_FORMAT_BYTES;
if (HAL_CRC_Init(&hcrc) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN CRC_Init 2 */
/* USER CODE END CRC_Init 2 */
}
/**
* @brief IWDG Initialization Function
* @param None
* @retval None
*/
static void MX_IWDG_Init(void)
{
/* USER CODE BEGIN IWDG_Init 0 */
/* USER CODE END IWDG_Init 0 */
/* USER CODE BEGIN IWDG_Init 1 */
/* USER CODE END IWDG_Init 1 */
// hiwdg.Instance = IWDG;
// hiwdg.Init.Prescaler = IWDG_PRESCALER_128;
// hiwdg.Init.Window = 4095;
// hiwdg.Init.Reload = 3750;
// if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
// {
// Error_Handler();
// }
/* USER CODE BEGIN IWDG_Init 2 */
/* USER CODE END IWDG_Init 2 */
}
/**
* @brief RTC Initialization Function
* @param None
* @retval None
*/
static void MX_RTC_Init(void)
{
/* USER CODE BEGIN RTC_Init 0 */
/* USER CODE END RTC_Init 0 */
/* USER CODE BEGIN RTC_Init 1 */
/* USER CODE END RTC_Init 1 */
/** Initialize RTC Only
*/
hrtc.Instance = RTC;
hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
hrtc.Init.AsynchPrediv = 127;
hrtc.Init.SynchPrediv = 255;
hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&hrtc) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN RTC_Init 2 */
/* USER CODE END RTC_Init 2 */
}
/**
* @brief SPI1 Initialization Function
* @param None
* @retval None
*/
static void MX_SPI1_Init(void)
{
/* USER CODE BEGIN SPI1_Init 0 */
/* USER CODE END SPI1_Init 0 */
/* USER CODE BEGIN SPI1_Init 1 */
/* USER CODE END SPI1_Init 1 */
/* SPI1 parameter configuration*/
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_4BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 7;
hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi1.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI1_Init 2 */
/* USER CODE END SPI1_Init 2 */
}
/**
* @brief TIM1 Initialization Function
* @param None
* @retval None
*/
static void MX_TIM1_Init(void)
{
/* USER CODE BEGIN TIM1_Init 0 */
/* USER CODE END TIM1_Init 0 */
TIM_ClockConfigTypeDef sClockSourceConfig = {0};
TIM_SlaveConfigTypeDef sSlaveConfig = {0};
TIM_MasterConfigTypeDef sMasterConfig = {0};
TIM_IC_InitTypeDef sConfigIC = {0};
/* USER CODE BEGIN TIM1_Init 1 */
/* USER CODE END TIM1_Init 1 */
htim1.Instance = TIM1;
htim1.Init.Prescaler = 80-1;
htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
htim1.Init.Period = 1000-1;
htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
htim1.Init.RepetitionCounter = 0;
htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
{
Error_Handler();
}
if (HAL_TIM_IC_Init(&htim1) != HAL_OK)
{
Error_Handler();
}
sSlaveConfig.SlaveMode = TIM_SLAVEMODE_RESET;
sSlaveConfig.InputTrigger = TIM_TS_ITR0;
if (HAL_TIM_SlaveConfigSynchro(&htim1, &sSlaveConfig) != HAL_OK)
{
Error_Handler();
}
sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
{
Error_Handler();
}
sConfigIC.ICPolarity = TIM_INPUTCHANNELPOLARITY_RISING;
sConfigIC.ICSelection = TIM_ICSELECTION_DIRECTTI;
sConfigIC.ICPrescaler = TIM_ICPSC_DIV1;
sConfigIC.ICFilter = 0;
if (HAL_TIM_IC_ConfigChannel(&htim1, &sConfigIC, TIM_CHANNEL_1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN TIM1_Init 2 */
HAL_NVIC_SetPriority(TIM1_CC_IRQn, 0, 2);
HAL_NVIC_EnableIRQ(TIM1_CC_IRQn);
HAL_TIM_Base_Start_IT(&htim1);
/* USER CODE END TIM1_Init 2 */
}
/**
* @brief USART1 Initialization Function
* @param None
* @retval None
*/
static void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 9600;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
// 在MX_USART1_UART_Init函数中添加
// HAL_UART_Receive_IT(&huart1, rx_analyse_buf, 1); // 启动接收中断
HAL_NVIC_SetPriority(USART1_IRQn, 0, 0); // 优先级设为最高
HAL_NVIC_EnableIRQ(USART1_IRQn);
/* USER CODE END USART1_Init 2 */
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3|GPIO_PIN_10|GPIO_PIN_11, GPIO_PIN_RESET);
/*Configure GPIO pins : PA1 PA2 */
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : PA3 PA10 PA11 */
GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_10|GPIO_PIN_11;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pin : PA4 */
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN MX_GPIO_Init_2 */
// 配置PB7为唤醒引脚（上升沿触发）
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
void Configure_Wakeup_Pin(void) {
GPIO_InitTypeDef GPIO_InitStruct = {0};
// 使能GPIOB时钟
__HAL_RCC_GPIOB_CLK_ENABLE();
// 配置PB7为外部中断唤醒源
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING; // 上升沿触发
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
// 设置中断优先级
HAL_NVIC_SetPriority(EXTI4_15_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);
}
#if 1
#pragma import(__use_no_semihosting)
//标准库需要的支持函数
struct __FILE
{
int handle;
};
FILE __stdout;
//定义_sys_exit()以避免使用半主机模式
void _sys_exit(int x)
{
x = x;
}
//重定义fputc函数
int fputc(int ch, FILE *f)
{
while((USART1->ISR&0X40)==0);//循环发送,直到发送完毕
USART1->TDR = (uint8_t) ch;
return ch;
}
#endif
//bool flag_alarm_wakeup=false; //休眠唤醒标志位
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
/* Prevent unused argument(s) compilation warning */
if(flag_ecu_sleep==true)
{
flag_alarm_wakeup=true;
}
}
void ECU_Sleep_Config(void)
{
LED1_OFF(); LED2_OFF();
HAL_TIM_PWM_Stop(&htim1,TIM_CHANNEL_1); //deint不会关pwm，所以在这里确保一定关
// HAL_TIM_Base_Stop_IT(&htim3);
// HAL_ADC_DeInit(&hadc); //关闭ADC
HAL_TIM_Base_DeInit(&htim1); //关闭TIM
// HAL_TIM_Base_DeInit(&htim3); //关闭TIM
HAL_UART_DeInit(&huart1); //关闭串口
GPIO_Sleep_Config(); //全部配置为模拟输入
flag_exti_wakeup=false;
flag_alarm_wakeup=false;
MX_RTC_Init();
HAL_IWDG_Refresh(&hiwdg); //喂狗
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1); // PB7对应WAKEUP_PIN1
HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFI); //进入停止模式，中断唤醒
SystemClock_Config(); //唤醒后打开时钟 Pin(PWR_WAKEUP_PIN1
HAL_IWDG_Refresh(&hiwdg); //喂狗
}
void ECU_WakeUp_Config(void)
{
// Configure_Wakeup_Pin();
MX_GPIO_Init();
MX_IWDG_Init();
MX_RTC_Init();
MX_TIM1_Init();
MX_USART1_UART_Init();
HAL_TIM_PWM_Start(&htim1,TIM_CHANNEL_1); //使能TIM1的PWM Channel1 输出
LED1_ON();
LED2_OFF();
}
//void Enter_Stop_Mode(void) {
// // 关闭外设
// HAL_UART_DeInit(&huart1);
// HAL_SPI_DeInit(&hspi1);
// LED1_OFF(); LED2_OFF();
// // 禁用外设时钟
// __HAL_RCC_SPI1_CLK_DISABLE();
// __HAL_RCC_USART1_CLK_DISABLE();
//
// // 配置唤醒源
// Configure_Wakeup_Pin();
// // 关闭所有外设时钟（除必要唤醒源）
// HAL_SuspendTick(); // 挂起SysTick，避免唤醒后立即进入中断
//
// // 配置PB7为唤醒源（已在MX_GPIO_Init中配置）
// HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1); // PB7对应WAKEUP_PIN1
// // 进入停止模式（保留RAM内容，低功耗稳压器开启）
//// HAL_IWDG_Refresh(&hiwdg);
// systemState = SYSTEM_SLEEPING;
// HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
//
// // 唤醒后初始化（系统时钟恢复为HSI 16MHz）
// SystemClock_Config(); // 重新配置系统时钟
//// MX_GPIO_Init();
//// MX_USART1_UART_Init();
//// MX_SPI1_Init();
//// HAL_ResumeTick(); // 恢复SysTick
// Wakeup_Init();
//// HAL_IWDG_Refresh(&hiwdg);
//}
// void Wakeup_Init(void)
//{
// // 重新配置系统时钟
// SystemClock_Config();
//
// // 重新初始化外设
// MX_GPIO_Init();
// MX_USART1_UART_Init();
// MX_SPI1_Init();
// HAL_IWDG_Refresh(&hiwdg);
// // 恢复SysTick
// HAL_ResumeTick();
//
// // 重新启用UART接收中断
// HAL_UART_Receive_IT(&huart1, rx_buffer, RX_BUFFER_SIZE);
//
// // 更新系统状态
// systemState = SYSTEM_ACTIVE;
// wakeupFlag = false;
// LED1_ON(); LED2_OFF();
// // LED指示唤醒
// LED_Control(1, 100, 100, 3); // 快速闪烁3次
//}
// void Wakeup_Handler(void ){
//
//
// __disable_irq();
// while (1) {
// // 错误时LED持续闪烁
// LED_Control(1, 200, 200, 0);
// }
// }
// void EXTI4_15_IRQHandler(void) {
// if(__HAL_GPIO_EXTI_GET_IT(GPIO_PIN_7) != RESET) {
// __HAL_GPIO_EXTI_CLEAR_IT(GPIO_PIN_7); // 清除中断标志
// wakeupFlag = true; // 设置唤醒标志
// }
//}
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */脚PB7为唤醒脚
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本文探讨了一位开发者在将官方串口中断发送例程移植到自定义工程时遇到的问题。具体表现为程序异常跳转至WAKEUP_PIN_IRQHandler，经排查发现为中断向量定义缺失所致。详细分析了中断向量在不同文件间的引用问题，揭示了编译器未提示错误的潜在原因。
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