在Keil中使用HAL库时出现.\Objects\test.axf: Error: L6218E: Undefined symbol SystemInit (referred from start）等

港控/mmm° 2023-06-18 03:55 6阅读 0赞

## 在Keil中使用HAL库时出现.\\Objects\\test.axf: Error: L6218E: Undefined symbol SystemInit (referred from startup\_stm32f107xc.o).等问题。 ##

在上一篇中谈到使用stm32f107的HAL库，实践中出现以下问题：  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol SystemInit (referred from startup\_stm32f107xc.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol \_\_UNALIGNED\_UINT32\_WRITE (referred from stm32f1xx\_ll\_usb.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol \_\_UNALIGNED\_UINT32\_READ (referred from stm32f1xx\_ll\_usb.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol SystemCoreClock (referred from stm32f1xx\_hal.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol AHBPrescTable (referred from stm32f1xx\_hal\_rcc.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol APBPrescTable (referred from stm32f1xx\_hal\_rcc.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol \_\_UNALIGNED\_UINT32\_READ (referred from stm32f1xx\_ll\_usb.o).

## 原因 ##

问题是未定义一些东西，即使我去定义

void SystemInit()
    {
        
    }

仍然有些问题，后来发现是没有添加头文件stm32f107xc.h.

## 解决办法 ##

目录：（你在官网上下载的STM32Cube\_FW\_F1\_V1.8.0下的目录）\\STM32Cube\_FW\_F1\_V1.8.0\\Drivers\\CMSIS\\Device\\ST\\STM32F1xx\\Include  
复制到你的工程文件下\\KEIL files\\Hal\_test\\STM32F1xx\_HAL\_Driver 下

### 至于下面的两个错误解决办法是c文件中添加定义 ###

.\\Objects\\test.axf: Error: L6218E: Undefined symbol \_\_UNALIGNED\_UINT32\_WRITE (referred from stm32f1xx\_ll\_usb.o).  
.\\Objects\\test.axf: Error: L6218E: Undefined symbol \_\_UNALIGNED\_UINT32\_READ (referred from stm32f1xx\_ll\_usb.o).

void __UNALIGNED_UINT32_READ(){
        }
    void __UNALIGNED_UINT32_WRITE(){
        }

![在这里插入图片描述][20191129222314474.png]

## 注：如遇到这种问题"Please select first the target STM32F1xx device used in your application (in stm32f1xx.h file)" ##

### 解决办法：就在stm32f1xx.h文件下取消你所用的mcu的注释就可以了，我用的是STM32F107VC,所以修改如图 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NmOTA5MA_size_16_color_FFFFFF_t_70]

### 这是我测试好的f107工程直接用[link][] ###

[20191129222314474.png]: https://img-blog.csdnimg.cn/20191129222314474.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NmOTA5MA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191129222558152.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NmOTA5MA==,size_16,color_FFFFFF,t_70
[link]: https://download.csdn.net/download/sf9090/12006144