STM32错误代码L6218E解析与解决方案

.\Objects\LED-闪烁.axf: Error: L6218E: Undefined symbol USART_ReceiveDate (referred from serial.o).

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Finished: 2 information, 0 warning and 1 error messages.
".\Objects\LED-闪烁.axf" – 1 Error(s), 2 Warning(s).

解决:找到你写的未定义的变量USART…(可能你或函数内部定义过),挨个找选中后ctrl+f,

将USART_ReceiveDate(USART1)换为USART_ReceiveData(USART1),//我把a打成了e,我丢

结束

".\Objects\LED-闪烁.axf" – 0 Error(s), 1 Warning(s)..

还有1. 是extern声明只在.c文件,就会报错,必须在.h文件里声明外部调用才可解决.

       2.  .h文件里声明外部调用的数组，加内容也可能报错.如extern uint16_t Myrtc_Time[]={2023,1,1,23,59,55};//wrong

作者：Suger532