stm32 led闪烁实验调试问题
时间：10-02
整理：3721RD
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..\工程模板.axf: Error: L6218E: Undefined symbol GPIO_Init (referred from led.o).
..\工程模板.axf: Error: L6218E: Undefined symbol GPIO_ResetBits (referred from led.o).
..\工程模板.axf: Error: L6218E: Undefined symbol GPIO_SetBits (referred from led.o).
..\工程模板.axf: Error: L6218E: Undefined symbol RCC_APB2PeriphClockCmd (referred from led.o).
..\工程模板.axf: Not enough information to list image symbols.
..\工程模板.axf: Finished: 1 information, 0 warning and 4 error messages.
求教这是怎么回事，具体应该怎么操作解决，谢谢
..\工程模板.axf: Error: L6218E: Undefined symbol GPIO_ResetBits (referred from led.o).
..\工程模板.axf: Error: L6218E: Undefined symbol GPIO_SetBits (referred from led.o).
..\工程模板.axf: Error: L6218E: Undefined symbol RCC_APB2PeriphClockCmd (referred from led.o).
..\工程模板.axf: Not enough information to list image symbols.
..\工程模板.axf: Finished: 1 information, 0 warning and 4 error messages.
求教这是怎么回事，具体应该怎么操作解决，谢谢
头文件
额，，，，，，，，怎么弄。