MDK调试错误

Undefined symbol assert_failed (referred from dma.o).

链接过程中出现assert_param函数未定义的错误

解决方法：

　　　　　在Options->C/C++->preprocessor
Symboles有Define:项中输入USE_STDPERIPH_DRIVER，重新编译链接，无警告无错误。

　　　　　或其实，出现这种现象是由于你使用的main文件模板时将以下的函数删掉了！所以直接加上相应的函数就OK！

 1 #ifdef  USE_FULL_ASSERT

 2  /**

 3    * @brief  Reports the name of the source file and the source line number

 4    *   where the assert_param error has occurred.

 5    * @param file: pointer to the source file name

 6    * @param line: assert_param error line source number

 7    * @retval : None

 8    */

 9  #define assert_param(expr) ((expr) ? (void)0 : assert_failed((uint8_t *)__FILE__, __LINE__))

10  /* Exported functions ------------------------------------------------------- */

11    void assert_failed(uint8_t* file, uint32_t line);

12  #else

13    #define assert_param(expr) ((void)0)

14  #endif

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