【stm32疑难杂症】：Error: L6218E: Undefined symbol TIM_Cmd (referred from timer.o).

项目场景：

        在使用工程是发现问题：

..\OBJ\OLED.axf: Error: L6218E: Undefined symbol TIM_Cmd (referred from timer.o).
..\OBJ\OLED.axf: Error: L6218E: Undefined symbol TIM_ITConfig (referred from timer.o).
..\OBJ\OLED.axf: Error: L6218E: Undefined symbol TIM_TimeBaseInit (referred from timer.o).

问题描述

Build started: Project: OLED
*** Using Compiler 'V5.06 update 7 (build 960)', folder: 'D:\Keil_v5\ARM\ARMCC\Bin'
Build target 'OLED'
linking...
..\OBJ\OLED.axf: Error: L6218E: Undefined symbol TIM_Cmd (referred from timer.o).
..\OBJ\OLED.axf: Error: L6218E: Undefined symbol TIM_ITConfig (referred from timer.o).
..\OBJ\OLED.axf: Error: L6218E: Undefined symbol TIM_TimeBaseInit (referred from timer.o).
Not enough information to list image symbols.
Not enough information to list load addresses in the image map.
Finished: 2 information, 0 warning and 3 error messages.
"..\OBJ\OLED.axf" - 3 Error(s), 0 Warning(s).
Target not created.
Build Time Elapsed:  00:00:00

解决方案：

前提保证自己的函数工程都没问题，不存在什么写错函数名的一类问题，建议你尝试我这种方法解决：

        其实就是忘了添加   stm32f10x_tim.c   文件

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