Keil代码移植_轮询串口1

Tutorial: 卓越工程师 Category: 嵌入式 Published: 2026-10-23 11:05:29 Views: 0 Likes: 0 Comments: 0

126.4.16Keil代码移植_轮询串口1

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Inc/main.h
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.h
  * @brief          : Header for main.c file.
  *                   This file contains the common defines of the application.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"

#define KEY1_Pin GPIO_PIN_3 /* KEY1 接 PE3。 */
#define KEY1_GPIO_Port GPIOE
#define KEY2_Pin GPIO_PIN_4
#define KEY2_GPIO_Port GPIOE
#define LED2_Pin GPIO_PIN_5 /* LED2 接 PE5。 */
#define LED2_GPIO_Port GPIOE
#define SUN_Pin GPIO_PIN_11
#define SUN_GPIO_Port GPIOB
#define LED1_Pin GPIO_PIN_5 /* LED1 接 PB5。 */
#define LED1_GPIO_Port GPIOB
#define BEEP_Pin GPIO_PIN_8
#define BEEP_GPIO_Port GPIOB

/* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);

/* USER CODE BEGIN EFP */

/* USER CODE END EFP */

/* Private defines -----------------------------------------------------------*/

/* USER CODE BEGIN Private defines */

/* USER CODE END Private defines */

#ifdef __cplusplus
}
#endif

#endif /* __MAIN_H */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Inc/gpio.h
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    gpio.h
  * @brief   This file contains all the function prototypes for
  *          the gpio.c file
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __GPIO_H__
#define __GPIO_H__

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* USER CODE BEGIN Private defines */

/* USER CODE END Private defines */

void MDK_GPIO_Init(void);

/* USER CODE BEGIN Prototypes */

/* USER CODE END Prototypes */

#ifdef __cplusplus
}
#endif
#endif /*__ GPIO_H__ */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Inc/uart.h
 * ======================================================================== */
#ifndef __UART_H__
#define __UART_H__

#include "main.h"
#include <stdio.h>

extern UART_HandleTypeDef huart1;

extern uint8_t u_buf[256]; /* printf 重定向使用的全局发送缓冲区。 */
#define printf(...)  HAL_UART_Transmit(&huart1, (uint8_t *)u_buf, sprintf((char*)u_buf, __VA_ARGS__), 0xffff) /* 先格式化，再由 USART1 阻塞发送。 */

void MDK_USART1_UART_Init(void);


#endif /* __UART_H__ */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Inc/stm32f1xx_it.h
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    stm32f1xx_it.h
  * @brief   This file contains the headers of the interrupt handlers.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F1xx_IT_H
#define __STM32F1xx_IT_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */

/* USER CODE END ET */

/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */

/* USER CODE END EC */

/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */

/* USER CODE END EM */

/* Exported functions prototypes ---------------------------------------------*/
void NMI_Handler(void);
void HardFault_Handler(void);
void MemManage_Handler(void);
void BusFault_Handler(void);
void UsageFault_Handler(void);
void SVC_Handler(void);
void DebugMon_Handler(void);
void PendSV_Handler(void);
void SysTick_Handler(void);
/* USER CODE BEGIN EFP */

/* USER CODE END EFP */

#ifdef __cplusplus
}
#endif

#endif /* __STM32F1xx_IT_H */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Inc/stm32f1xx_hal_conf.h
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    stm32f1xx_hal_conf.h
  * @brief   HAL configuration file.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2017 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 */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F1xx_HAL_CONF_H
#define __STM32F1xx_HAL_CONF_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/

/* ########################## Module Selection ############################## */
/**
  * @brief This is the list of modules to be used in the HAL driver
  */

#define HAL_MODULE_ENABLED
  /*#define HAL_ADC_MODULE_ENABLED   */
/*#define HAL_CRYP_MODULE_ENABLED   */
/*#define HAL_CAN_MODULE_ENABLED   */
/*#define HAL_CAN_LEGACY_MODULE_ENABLED   */
/*#define HAL_CEC_MODULE_ENABLED   */
/*#define HAL_CORTEX_MODULE_ENABLED   */
/*#define HAL_CRC_MODULE_ENABLED   */
/*#define HAL_DAC_MODULE_ENABLED   */
/*#define HAL_DMA_MODULE_ENABLED   */
/*#define HAL_ETH_MODULE_ENABLED   */
/*#define HAL_FLASH_MODULE_ENABLED   */
#define HAL_GPIO_MODULE_ENABLED
/*#define HAL_I2C_MODULE_ENABLED   */
/*#define HAL_I2S_MODULE_ENABLED   */
/*#define HAL_IRDA_MODULE_ENABLED   */
/*#define HAL_IWDG_MODULE_ENABLED   */
/*#define HAL_NOR_MODULE_ENABLED   */
/*#define HAL_NAND_MODULE_ENABLED   */
/*#define HAL_PCCARD_MODULE_ENABLED   */
/*#define HAL_PCD_MODULE_ENABLED   */
/*#define HAL_HCD_MODULE_ENABLED   */
/*#define HAL_PWR_MODULE_ENABLED   */
/*#define HAL_RCC_MODULE_ENABLED   */
/*#define HAL_RTC_MODULE_ENABLED   */
/*#define HAL_SD_MODULE_ENABLED   */
/*#define HAL_MMC_MODULE_ENABLED   */
/*#define HAL_SDRAM_MODULE_ENABLED   */
/*#define HAL_SMARTCARD_MODULE_ENABLED   */
/*#define HAL_SPI_MODULE_ENABLED   */
/*#define HAL_SRAM_MODULE_ENABLED   */
/*#define HAL_TIM_MODULE_ENABLED   */
#define HAL_UART_MODULE_ENABLED /* Keil 工程必须启用 UART HAL 模块。 */
#define HAL_USART_MODULE_ENABLED /* 同时保留 USART HAL 模块配置。 */
/*#define HAL_WWDG_MODULE_ENABLED   */

#define HAL_CORTEX_MODULE_ENABLED
#define HAL_DMA_MODULE_ENABLED
#define HAL_FLASH_MODULE_ENABLED
#define HAL_EXTI_MODULE_ENABLED
#define HAL_GPIO_MODULE_ENABLED
#define HAL_PWR_MODULE_ENABLED
#define HAL_RCC_MODULE_ENABLED

/* ########################## Oscillator Values adaptation ####################*/
/**
  * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
  *        This value is used by the RCC HAL module to compute the system frequency
  *        (when HSE is used as system clock source, directly or through the PLL).
  */
#if !defined  (HSE_VALUE)
  #define HSE_VALUE    8000000U /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */

#if !defined  (HSE_STARTUP_TIMEOUT)
  #define HSE_STARTUP_TIMEOUT    100U   /*!< Time out for HSE start up, in ms */
#endif /* HSE_STARTUP_TIMEOUT */

/**
  * @brief Internal High Speed oscillator (HSI) value.
  *        This value is used by the RCC HAL module to compute the system frequency
  *        (when HSI is used as system clock source, directly or through the PLL).
  */
#if !defined  (HSI_VALUE)
  #define HSI_VALUE    8000000U /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */

/**
  * @brief Internal Low Speed oscillator (LSI) value.
  */
#if !defined  (LSI_VALUE)
 #define LSI_VALUE               40000U    /*!< LSI Typical Value in Hz */
#endif /* LSI_VALUE */                     /*!< Value of the Internal Low Speed oscillator in Hz
                                                The real value may vary depending on the variations
                                                in voltage and temperature. */

/**
  * @brief External Low Speed oscillator (LSE) value.
  *        This value is used by the UART, RTC HAL module to compute the system frequency
  */
#if !defined  (LSE_VALUE)
  #define LSE_VALUE    32768U /*!< Value of the External oscillator in Hz*/
#endif /* LSE_VALUE */

#if !defined  (LSE_STARTUP_TIMEOUT)
  #define LSE_STARTUP_TIMEOUT    5000U   /*!< Time out for LSE start up, in ms */
#endif /* LSE_STARTUP_TIMEOUT */

/* Tip: To avoid modifying this file each time you need to use different HSE,
   ===  you can define the HSE value in your toolchain compiler preprocessor. */

/* ########################### System Configuration ######################### */
/**
  * @brief This is the HAL system configuration section
  */
#define  VDD_VALUE                    3300U /*!< Value of VDD in mv */
#define  TICK_INT_PRIORITY            15U    /*!< tick interrupt priority (lowest by default)  */
#define  USE_RTOS                     0U
#define  PREFETCH_ENABLE              1U

#define  USE_HAL_ADC_REGISTER_CALLBACKS         0U /* ADC register callback disabled       */
#define  USE_HAL_CAN_REGISTER_CALLBACKS         0U /* CAN register callback disabled       */
#define  USE_HAL_CEC_REGISTER_CALLBACKS         0U /* CEC register callback disabled       */
#define  USE_HAL_DAC_REGISTER_CALLBACKS         0U /* DAC register callback disabled       */
#define  USE_HAL_ETH_REGISTER_CALLBACKS         0U /* ETH register callback disabled       */
#define  USE_HAL_HCD_REGISTER_CALLBACKS         0U /* HCD register callback disabled       */
#define  USE_HAL_I2C_REGISTER_CALLBACKS         0U /* I2C register callback disabled       */
#define  USE_HAL_I2S_REGISTER_CALLBACKS         0U /* I2S register callback disabled       */
#define  USE_HAL_MMC_REGISTER_CALLBACKS         0U /* MMC register callback disabled       */
#define  USE_HAL_NAND_REGISTER_CALLBACKS        0U /* NAND register callback disabled      */
#define  USE_HAL_NOR_REGISTER_CALLBACKS         0U /* NOR register callback disabled       */
#define  USE_HAL_PCCARD_REGISTER_CALLBACKS      0U /* PCCARD register callback disabled    */
#define  USE_HAL_PCD_REGISTER_CALLBACKS         0U /* PCD register callback disabled       */
#define  USE_HAL_RTC_REGISTER_CALLBACKS         0U /* RTC register callback disabled       */
#define  USE_HAL_SD_REGISTER_CALLBACKS          0U /* SD register callback disabled        */
#define  USE_HAL_SMARTCARD_REGISTER_CALLBACKS   0U /* SMARTCARD register callback disabled */
#define  USE_HAL_IRDA_REGISTER_CALLBACKS        0U /* IRDA register callback disabled      */
#define  USE_HAL_SRAM_REGISTER_CALLBACKS        0U /* SRAM register callback disabled      */
#define  USE_HAL_SPI_REGISTER_CALLBACKS         0U /* SPI register callback disabled       */
#define  USE_HAL_TIM_REGISTER_CALLBACKS         0U /* TIM register callback disabled       */
#define  USE_HAL_UART_REGISTER_CALLBACKS        0U /* UART register callback disabled      */
#define  USE_HAL_USART_REGISTER_CALLBACKS       0U /* USART register callback disabled     */
#define  USE_HAL_WWDG_REGISTER_CALLBACKS        0U /* WWDG register callback disabled      */

/* ########################## Assert Selection ############################## */
/**
  * @brief Uncomment the line below to expanse the "assert_param" macro in the
  *        HAL drivers code
  */
/* #define USE_FULL_ASSERT    1U */

/* ################## Ethernet peripheral configuration ##################### */

/* Section 1 : Ethernet peripheral configuration */

/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
#define MAC_ADDR0   2U
#define MAC_ADDR1   0U
#define MAC_ADDR2   0U
#define MAC_ADDR3   0U
#define MAC_ADDR4   0U
#define MAC_ADDR5   0U

/* Definition of the Ethernet driver buffers size and count */
#define ETH_RX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for receive               */
#define ETH_TX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for transmit              */
#define ETH_RXBUFNB                    8U       /* 4 Rx buffers of size ETH_RX_BUF_SIZE  */
#define ETH_TXBUFNB                    4U       /* 4 Tx buffers of size ETH_TX_BUF_SIZE  */

/* Section 2: PHY configuration section */

/* DP83848_PHY_ADDRESS Address*/
#define DP83848_PHY_ADDRESS           0x01U
/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/
#define PHY_RESET_DELAY                 0x000000FFU
/* PHY Configuration delay */
#define PHY_CONFIG_DELAY                0x00000FFFU

#define PHY_READ_TO                     0x0000FFFFU
#define PHY_WRITE_TO                    0x0000FFFFU

/* Section 3: Common PHY Registers */

#define PHY_BCR                         ((uint16_t)0x00)    /*!< Transceiver Basic Control Register   */
#define PHY_BSR                         ((uint16_t)0x01)    /*!< Transceiver Basic Status Register    */

#define PHY_RESET                       ((uint16_t)0x8000)  /*!< PHY Reset */
#define PHY_LOOPBACK                    ((uint16_t)0x4000)  /*!< Select loop-back mode */
#define PHY_FULLDUPLEX_100M             ((uint16_t)0x2100)  /*!< Set the full-duplex mode at 100 Mb/s */
#define PHY_HALFDUPLEX_100M             ((uint16_t)0x2000)  /*!< Set the half-duplex mode at 100 Mb/s */
#define PHY_FULLDUPLEX_10M              ((uint16_t)0x0100)  /*!< Set the full-duplex mode at 10 Mb/s  */
#define PHY_HALFDUPLEX_10M              ((uint16_t)0x0000)  /*!< Set the half-duplex mode at 10 Mb/s  */
#define PHY_AUTONEGOTIATION             ((uint16_t)0x1000)  /*!< Enable auto-negotiation function     */
#define PHY_RESTART_AUTONEGOTIATION     ((uint16_t)0x0200)  /*!< Restart auto-negotiation function    */
#define PHY_POWERDOWN                   ((uint16_t)0x0800)  /*!< Select the power down mode           */
#define PHY_ISOLATE                     ((uint16_t)0x0400)  /*!< Isolate PHY from MII                 */

#define PHY_AUTONEGO_COMPLETE           ((uint16_t)0x0020)  /*!< Auto-Negotiation process completed   */
#define PHY_LINKED_STATUS               ((uint16_t)0x0004)  /*!< Valid link established               */
#define PHY_JABBER_DETECTION            ((uint16_t)0x0002)  /*!< Jabber condition detected            */

/* Section 4: Extended PHY Registers */
#define PHY_SR                          ((uint16_t)0x10U)    /*!< PHY status register Offset                      */

#define PHY_SPEED_STATUS                ((uint16_t)0x0002U)  /*!< PHY Speed mask                                  */
#define PHY_DUPLEX_STATUS               ((uint16_t)0x0004U)  /*!< PHY Duplex mask                                 */

/* ################## SPI peripheral configuration ########################## */

/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
* Activated: CRC code is present inside driver
* Deactivated: CRC code cleaned from driver
*/

#define USE_SPI_CRC                     0U

/* Includes ------------------------------------------------------------------*/
/**
  * @brief Include module's header file
  */

#ifdef HAL_RCC_MODULE_ENABLED
#include "stm32f1xx_hal_rcc.h"
#endif /* HAL_RCC_MODULE_ENABLED */
#ifdef HAL_GPIO_MODULE_ENABLED
#include "stm32f1xx_hal_gpio.h"
#endif /* HAL_GPIO_MODULE_ENABLED */

#ifdef HAL_EXTI_MODULE_ENABLED
#include "stm32f1xx_hal_exti.h"
#endif /* HAL_EXTI_MODULE_ENABLED */

#ifdef HAL_DMA_MODULE_ENABLED
#include "stm32f1xx_hal_dma.h"
#endif /* HAL_DMA_MODULE_ENABLED */

#ifdef HAL_ETH_MODULE_ENABLED
#include "stm32f1xx_hal_eth.h"
#endif /* HAL_ETH_MODULE_ENABLED */

#ifdef HAL_CAN_MODULE_ENABLED
#include "stm32f1xx_hal_can.h"
#endif /* HAL_CAN_MODULE_ENABLED */

#ifdef HAL_CAN_LEGACY_MODULE_ENABLED
  #include "Legacy/stm32f1xx_hal_can_legacy.h"
#endif /* HAL_CAN_LEGACY_MODULE_ENABLED */

#ifdef HAL_CEC_MODULE_ENABLED
#include "stm32f1xx_hal_cec.h"
#endif /* HAL_CEC_MODULE_ENABLED */

#ifdef HAL_CORTEX_MODULE_ENABLED
#include "stm32f1xx_hal_cortex.h"
#endif /* HAL_CORTEX_MODULE_ENABLED */

#ifdef HAL_ADC_MODULE_ENABLED
#include "stm32f1xx_hal_adc.h"
#endif /* HAL_ADC_MODULE_ENABLED */

#ifdef HAL_CRC_MODULE_ENABLED
#include "stm32f1xx_hal_crc.h"
#endif /* HAL_CRC_MODULE_ENABLED */

#ifdef HAL_DAC_MODULE_ENABLED
#include "stm32f1xx_hal_dac.h"
#endif /* HAL_DAC_MODULE_ENABLED */

#ifdef HAL_FLASH_MODULE_ENABLED
#include "stm32f1xx_hal_flash.h"
#endif /* HAL_FLASH_MODULE_ENABLED */

#ifdef HAL_SRAM_MODULE_ENABLED
#include "stm32f1xx_hal_sram.h"
#endif /* HAL_SRAM_MODULE_ENABLED */

#ifdef HAL_NOR_MODULE_ENABLED
#include "stm32f1xx_hal_nor.h"
#endif /* HAL_NOR_MODULE_ENABLED */

#ifdef HAL_I2C_MODULE_ENABLED
#include "stm32f1xx_hal_i2c.h"
#endif /* HAL_I2C_MODULE_ENABLED */

#ifdef HAL_I2S_MODULE_ENABLED
#include "stm32f1xx_hal_i2s.h"
#endif /* HAL_I2S_MODULE_ENABLED */

#ifdef HAL_IWDG_MODULE_ENABLED
#include "stm32f1xx_hal_iwdg.h"
#endif /* HAL_IWDG_MODULE_ENABLED */

#ifdef HAL_PWR_MODULE_ENABLED
#include "stm32f1xx_hal_pwr.h"
#endif /* HAL_PWR_MODULE_ENABLED */

#ifdef HAL_RTC_MODULE_ENABLED
#include "stm32f1xx_hal_rtc.h"
#endif /* HAL_RTC_MODULE_ENABLED */

#ifdef HAL_PCCARD_MODULE_ENABLED
#include "stm32f1xx_hal_pccard.h"
#endif /* HAL_PCCARD_MODULE_ENABLED */

#ifdef HAL_SD_MODULE_ENABLED
#include "stm32f1xx_hal_sd.h"
#endif /* HAL_SD_MODULE_ENABLED */

#ifdef HAL_NAND_MODULE_ENABLED
#include "stm32f1xx_hal_nand.h"
#endif /* HAL_NAND_MODULE_ENABLED */

#ifdef HAL_SPI_MODULE_ENABLED
#include "stm32f1xx_hal_spi.h"
#endif /* HAL_SPI_MODULE_ENABLED */

#ifdef HAL_TIM_MODULE_ENABLED
#include "stm32f1xx_hal_tim.h"
#endif /* HAL_TIM_MODULE_ENABLED */

#ifdef HAL_UART_MODULE_ENABLED
#include "stm32f1xx_hal_uart.h"
#endif /* HAL_UART_MODULE_ENABLED */

#ifdef HAL_USART_MODULE_ENABLED
#include "stm32f1xx_hal_usart.h"
#endif /* HAL_USART_MODULE_ENABLED */

#ifdef HAL_IRDA_MODULE_ENABLED
#include "stm32f1xx_hal_irda.h"
#endif /* HAL_IRDA_MODULE_ENABLED */

#ifdef HAL_SMARTCARD_MODULE_ENABLED
#include "stm32f1xx_hal_smartcard.h"
#endif /* HAL_SMARTCARD_MODULE_ENABLED */

#ifdef HAL_WWDG_MODULE_ENABLED
#include "stm32f1xx_hal_wwdg.h"
#endif /* HAL_WWDG_MODULE_ENABLED */

#ifdef HAL_PCD_MODULE_ENABLED
#include "stm32f1xx_hal_pcd.h"
#endif /* HAL_PCD_MODULE_ENABLED */

#ifdef HAL_HCD_MODULE_ENABLED
#include "stm32f1xx_hal_hcd.h"
#endif /* HAL_HCD_MODULE_ENABLED */

#ifdef HAL_MMC_MODULE_ENABLED
#include "stm32f1xx_hal_mmc.h"
#endif /* HAL_MMC_MODULE_ENABLED */

/* Exported macro ------------------------------------------------------------*/
#ifdef  USE_FULL_ASSERT
/**
  * @brief  The assert_param macro is used for function's parameters check.
  * @param  expr If expr is false, it calls assert_failed function
  *         which reports the name of the source file and the source
  *         line number of the call that failed.
  *         If expr is true, it returns no value.
  * @retval None
  */
#define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
/* Exported functions ------------------------------------------------------- */
void assert_failed(uint8_t* file, uint32_t line);
#else
#define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */

#ifdef __cplusplus
}
#endif

#endif /* __STM32F1xx_HAL_CONF_H */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Src/main.c
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "gpio.h"
#include "main.h"
#include "uart.h"


#include <string.h>

void SystemClock_Config(void);

uint8_t UART_Recv[5]; /* 接收 4 字节命令，第 5 字节作为字符串结束符。 */
uint8_t DHT11_Buf[30]; /* 保存格式化后的待发送文本。 */
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init(); /* 初始化 HAL 和系统节拍。 */

/* Configure the system clock */
  SystemClock_Config();

/* Initialize all configured peripherals */
  MDK_GPIO_Init(); /* 调用移植到 Keil 工程的 GPIO 初始化函数。 */
  MDK_USART1_UART_Init(); /* 调用移植后的 USART1 初始化函数。 */
  /* Infinite loop */

  while (1)
  {
	  HAL_UART_Receive(&huart1, UART_Recv, 4, 1000); /* 轮询等待 4 字节命令，超时 1 秒。 */
	  if(strcmp("LED1", (char *)UART_Recv)==0)
	  {
		  HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin); /* 收到 LED1 后翻转 LED1。 */
		  memset(UART_Recv, '\0', 4);
	  }
	  if(!strcmp("LED2", (char *)UART_Recv))
	  {
		  HAL_GPIO_TogglePin(LED2_GPIO_Port, LED2_Pin); /* 收到 LED2 后翻转 LED2。 */
		  memset(UART_Recv, '\0', 4);
	  }
	  sprintf((char *)DHT11_Buf,"H2:%f T2:%f\n",30.1,36.5);
	  HAL_UART_Transmit(&huart1, (char *)DHT11_Buf, strlen(DHT11_Buf), 1000); /* 按实际文本长度发送。 */
	  printf("Hellow world wfeng %d!\n",123);
  }

}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  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_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* 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 */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Src/gpio.c
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    gpio.c
  * @brief   This file provides code for the configuration
  *          of all used GPIO pins.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "gpio.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/*----------------------------------------------------------------------------*/
/* Configure GPIO                                                             */
/*----------------------------------------------------------------------------*/
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/** Configure pins as
        * Analog
        * Input
        * Output
        * EVENT_OUT
        * EXTI
*/
void MDK_GPIO_Init(void)
{

 GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOE_CLK_ENABLE(); /* LED2 所在端口。 */
  __HAL_RCC_GPIOA_CLK_ENABLE(); /* USART1 引脚所在端口。 */
  __HAL_RCC_GPIOB_CLK_ENABLE(); /* LED1 所在端口。 */

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin : PtPin */
  GPIO_InitStruct.Pin = LED2_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LED2_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : PtPin */
  GPIO_InitStruct.Pin = LED1_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(LED1_GPIO_Port, &GPIO_InitStruct);

}

/* USER CODE BEGIN 2 */

/* USER CODE END 2 */

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Src/uart.c
 * ======================================================================== */
#include "uart.h"

uint8_t u_buf[256]; /* printf 宏实际使用的发送缓冲区，仅在此定义一次。 */

UART_HandleTypeDef huart1;

void MDK_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; /* 选择 USART1 外设实例。 */
  huart1.Init.BaudRate = 115200; /* 波特率为 115200 bit/s。 */
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE; /* 无校验，帧格式为 8N1。 */
  huart1.Init.Mode = UART_MODE_TX_RX; /* 同时启用发送和接收。 */
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspInit 0 */

  /* USER CODE END USART1_MspInit 0 */
    /* USART1 clock enable */
    __HAL_RCC_USART1_CLK_ENABLE(); /* 开启 USART1 外设时钟。 */

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9; /* PA9 作为 USART1_TX。 */
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; /* 发送脚使用复用推挽输出。 */
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_10; /* PA10 作为 USART1_RX。 */
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT; /* 接收脚配置为输入。 */
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* USER CODE BEGIN USART1_MspInit 1 */

  /* USER CODE END USART1_MspInit 1 */
  }
}

/* ========================================================================
 * Project: KEIL/03UART1
 * File: Core/Src/stm32f1xx_it.c
 * ======================================================================== */
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    stm32f1xx_it.c
  * @brief   Interrupt Service Routines.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "stm32f1xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */

/* USER CODE END TD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/* External variables --------------------------------------------------------*/

/* USER CODE BEGIN EV */

/* USER CODE END EV */

/******************************************************************************/
/*           Cortex-M3 Processor Interruption and Exception Handlers          */
/******************************************************************************/
/**
  * @brief This function handles Non maskable interrupt.
  */
void NMI_Handler(void)
{
  /* USER CODE BEGIN NonMaskableInt_IRQn 0 */

  /* USER CODE END NonMaskableInt_IRQn 0 */
  /* USER CODE BEGIN NonMaskableInt_IRQn 1 */
   while (1)
  {
  }
  /* USER CODE END NonMaskableInt_IRQn 1 */
}

/**
  * @brief This function handles Hard fault interrupt.
  */
void HardFault_Handler(void)
{
  /* USER CODE BEGIN HardFault_IRQn 0 */

  /* USER CODE END HardFault_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_HardFault_IRQn 0 */
    /* USER CODE END W1_HardFault_IRQn 0 */
  }
}

/**
  * @brief This function handles Memory management fault.
  */
void MemManage_Handler(void)
{
  /* USER CODE BEGIN MemoryManagement_IRQn 0 */

  /* USER CODE END MemoryManagement_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
    /* USER CODE END W1_MemoryManagement_IRQn 0 */
  }
}

/**
  * @brief This function handles Prefetch fault, memory access fault.
  */
void BusFault_Handler(void)
{
  /* USER CODE BEGIN BusFault_IRQn 0 */

  /* USER CODE END BusFault_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_BusFault_IRQn 0 */
    /* USER CODE END W1_BusFault_IRQn 0 */
  }
}

/**
  * @brief This function handles Undefined instruction or illegal state.
  */
void UsageFault_Handler(void)
{
  /* USER CODE BEGIN UsageFault_IRQn 0 */

  /* USER CODE END UsageFault_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
    /* USER CODE END W1_UsageFault_IRQn 0 */
  }
}

/**
  * @brief This function handles System service call via SWI instruction.
  */
void SVC_Handler(void)
{
  /* USER CODE BEGIN SVCall_IRQn 0 */

  /* USER CODE END SVCall_IRQn 0 */
  /* USER CODE BEGIN SVCall_IRQn 1 */

  /* USER CODE END SVCall_IRQn 1 */
}

/**
  * @brief This function handles Debug monitor.
  */
void DebugMon_Handler(void)
{
  /* USER CODE BEGIN DebugMonitor_IRQn 0 */

  /* USER CODE END DebugMonitor_IRQn 0 */
  /* USER CODE BEGIN DebugMonitor_IRQn 1 */

  /* USER CODE END DebugMonitor_IRQn 1 */
}

/**
  * @brief This function handles Pendable request for system service.
  */
void PendSV_Handler(void)
{
  /* USER CODE BEGIN PendSV_IRQn 0 */

  /* USER CODE END PendSV_IRQn 0 */
  /* USER CODE BEGIN PendSV_IRQn 1 */

  /* USER CODE END PendSV_IRQn 1 */
}

/**
  * @brief This function handles System tick timer.
  */
void SysTick_Handler(void)
{
  /* USER CODE BEGIN SysTick_IRQn 0 */

  /* USER CODE END SysTick_IRQn 0 */
  HAL_IncTick();
  /* USER CODE BEGIN SysTick_IRQn 1 */

  /* USER CODE END SysTick_IRQn 1 */
}

/******************************************************************************/
/* STM32F1xx Peripheral Interrupt Handlers                                    */
/* Add here the Interrupt Handlers for the used peripherals.                  */
/* For the available peripheral interrupt handler names,                      */
/* please refer to the startup file (startup_stm32f1xx.s).                    */
/******************************************************************************/

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

一、代码移植

本节把 CubeMX/CubeIDE 生成的 USART1 轮询工程手动整理到 Keil MDK。移植的本质不是简单复制文本，而是同时迁移应用源码、头文件搜索路径、HAL 模块开关、驱动源文件和硬件初始化。

1.1 复制新工程

以已经能点亮 LED 的 Keil 工程为基础复制一份，工程目录命名为 03UART1。复制工程可以保留芯片型号、启动文件、链接配置、系统时钟和下载设置。

开始前确认 Keil Target 仍选择 STM32F103ZET6，宏定义和启动文件与芯片容量等级一致。若误用其他器件的启动文件，中断向量和 Flash 布局都可能不匹配。

1.2 准备移植

USART1 轮询工程需要的应用层文件：

Core/
├─ Inc/
│  ├─ main.h
│  ├─ gpio.h
│  └─ uart.h
└─ Src/
   ├─ main.c
   ├─ gpio.c
   └─ uart.c

还要确认工程中已有：

  • CMSIS 芯片头文件和系统文件；
  • STM32F1 HAL 基础驱动；
  • stm32f1xx_hal_uart.c；
  • stm32f1xx_hal_conf.h 中的 UART 模块开关；
  • Core/Inc 等 Include Paths。

同一个函数实体只能编译一份。若工程同时保留生成版 usart.c 和手写版 uart.c，且两者定义相同句柄或 MSP 回调，会出现重复符号。

1.3 修改主函数

主函数的初始化顺序：

HAL_Init();
SystemClock_Config();
MDK_GPIO_Init();
MDK_USART1_UART_Init();

随后在主循环中用 HAL_UART_Receive() 接收 4 字节命令，控制 LED，并用 HAL_UART_Transmit() 或重定向 printf() 发送文本。

缓冲区应比命令多留一个终止字节：

uint8_t UART_Recv[5] = {0};

接收完成后设置 UART_Recv[4] = '\0'，并检查 HAL 返回值。工程代码重复包含了 main.h，虽有 include guard 通常不会重复定义，但应保留一处以保持清晰。

1.4 添加文件

在 Keil 的工程分组中添加 Core/Src/uart.c。头文件 uart.h 不需要作为编译单元加入 Source Group，但它所在目录必须出现在：

Options for Target
└─ C/C++
   └─ Include Paths
      └─ ..\Core\Inc

直接把空 TXT 改扩展名可以创建文件，但容易出现隐藏扩展名、编码和路径错误。更稳妥的是在 IDE 中创建 C Source/Header，保存到明确目录，再把 C 文件加入工程分组。

1.5 复制并修改代码

uart.h 负责对外声明：

extern UART_HandleTypeDef huart1;
void MDK_USART1_UART_Init(void);

uart.c 负责：

  1. 定义 UART_HandleTypeDef huart1；
  2. 配置 115200、8N1、收发双向；
  3. 调用 HAL_UART_Init()；
  4. 在 HAL_UART_MspInit() 中开启 USART1、GPIOA 时钟；
  5. 配置 PA9 为复用推挽 TX，PA10 为输入 RX。

如果使用宏实现 printf() 重定向，全局发送缓冲区必须只有一处定义，其他文件用 extern 声明。sprintf() 没有长度保护且宏不可重入，正式代码更适合实现 _write() 或使用 snprintf() 后发送。

1.6 编译并解决问题

常见问题对照：

报错/现象原因处理
UART_HandleTypeDef 未知UART HAL 头未启用或未包含打开模块宏并检查 include
HAL_UART_Init 未定义驱动 C 文件未参与链接加入 stm32f1xx_hal_uart.c
找不到 uart.hInclude Path 缺失添加 Core/Inc
huart1 重复定义多个 C 文件都定义句柄只保留一个定义，其余 extern
HAL_UART_MODULE_ENABLED 未生效stm32f1xx_hal_conf.h 中宏被注释启用该宏并重新编译
能编译但无输出时钟、GPIO、波特率或线路错误逐层检查初始化和硬件

Keil 一次错误可能引发大量连锁信息，应先处理最前面的根因。打开 HAL_UART_MODULE_ENABLED 会加入 UART HAL 代码，略微增加编译时间和 Flash 占用，这是条件编译节省资源的正常结果。

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