STM32F40xx搭建Keil工程编译错误（stm32f4xx

状况：

搭建完Keil工程后进行编译后发生如下的错误：

compiling stm32f4xx_fmc.c...
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(144): error:  #20: identifier "FMC_Bank1" is undefinedFMC_Bank1->BTCR[FMC_Bank] = 0x000030DB;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(149): error:  #20: identifier "FMC_Bank1" is undefinedFMC_Bank1->BTCR[FMC_Bank] = 0x000030D2;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(151): error:  #20: identifier "FMC_Bank1" is undefinedFMC_Bank1->BTCR[FMC_Bank + 1] = 0x0FFFFFFF;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(152): error:  #20: identifier "FMC_Bank1E" is undefinedFMC_Bank1E->BWTR[FMC_Bank] = 0x0FFFFFFF;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(191): error:  #20: identifier "FMC_Bank1" is undefinedtmpbcr = FMC_Bank1->BTCR[FMC_NORSRAMInitStruct->FMC_Bank];
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(195): error:  #20: identifier "FMC_BCR1_MBKEN" is undefinedtmpbcr &= ((uint32_t)~(FMC_BCR1_MBKEN   | FMC_BCR1_MUXEN    | FMC_BCR1_MTYP     | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(195): error:  #20: identifier "FMC_BCR1_MUXEN" is undefinedtmpbcr &= ((uint32_t)~(FMC_BCR1_MBKEN   | FMC_BCR1_MUXEN    | FMC_BCR1_MTYP     | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(195): error:  #20: identifier "FMC_BCR1_MTYP" is undefinedtmpbcr &= ((uint32_t)~(FMC_BCR1_MBKEN   | FMC_BCR1_MUXEN    | FMC_BCR1_MTYP     | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(196): error:  #20: identifier "FMC_BCR1_MWID" is undefinedFMC_BCR1_MWID     | FMC_BCR1_FACCEN   | FMC_BCR1_BURSTEN  | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(196): error:  #20: identifier "FMC_BCR1_FACCEN" is undefinedFMC_BCR1_MWID     | FMC_BCR1_FACCEN   | FMC_BCR1_BURSTEN  | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(196): error:  #20: identifier "FMC_BCR1_BURSTEN" is undefinedFMC_BCR1_MWID     | FMC_BCR1_FACCEN   | FMC_BCR1_BURSTEN  | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(197): error:  #20: identifier "FMC_BCR1_WAITPOL" is undefinedFMC_BCR1_WAITPOL  | FMC_BCR1_WRAPMOD  | FMC_BCR1_WAITCFG  | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(197): error:  #20: identifier "FMC_BCR1_WRAPMOD" is undefinedFMC_BCR1_WAITPOL  | FMC_BCR1_WRAPMOD  | FMC_BCR1_WAITCFG  | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(197): error:  #20: identifier "FMC_BCR1_WAITCFG" is undefinedFMC_BCR1_WAITPOL  | FMC_BCR1_WRAPMOD  | FMC_BCR1_WAITCFG  | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(198): error:  #20: identifier "FMC_BCR1_WREN" is undefinedFMC_BCR1_WREN     | FMC_BCR1_WAITEN   | FMC_BCR1_EXTMOD   | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(198): error:  #20: identifier "FMC_BCR1_WAITEN" is undefinedFMC_BCR1_WREN     | FMC_BCR1_WAITEN   | FMC_BCR1_EXTMOD   | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(198): error:  #20: identifier "FMC_BCR1_EXTMOD" is undefinedFMC_BCR1_WREN     | FMC_BCR1_WAITEN   | FMC_BCR1_EXTMOD   | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(199): error:  #20: identifier "FMC_BCR1_ASYNCWAIT" is undefinedFMC_BCR1_ASYNCWAIT| FMC_BCR1_CBURSTRW | FMC_BCR1_CCLKEN));
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(199): error:  #20: identifier "FMC_BCR1_CBURSTRW" is undefinedFMC_BCR1_ASYNCWAIT| FMC_BCR1_CBURSTRW | FMC_BCR1_CCLKEN));
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(199): error:  #20: identifier "FMC_BCR1_CCLKEN" is undefinedFMC_BCR1_ASYNCWAIT| FMC_BCR1_CBURSTRW | FMC_BCR1_CCLKEN));
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(253): error:  #20: identifier "FMC_Bank1E" is undefinedtmpbwr = FMC_Bank1E->BWTR[FMC_NORSRAMInitStruct->FMC_Bank];
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(256): error:  #20: identifier "FMC_BWTR1_ADDSET" is undefinedtmpbwr &= ((uint32_t)~(FMC_BWTR1_ADDSET  | FMC_BWTR1_ADDHLD | FMC_BWTR1_DATAST | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(256): error:  #20: identifier "FMC_BWTR1_ADDHLD" is undefinedtmpbwr &= ((uint32_t)~(FMC_BWTR1_ADDSET  | FMC_BWTR1_ADDHLD | FMC_BWTR1_DATAST | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(256): error:  #20: identifier "FMC_BWTR1_DATAST" is undefinedtmpbwr &= ((uint32_t)~(FMC_BWTR1_ADDSET  | FMC_BWTR1_ADDHLD | FMC_BWTR1_DATAST | \
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(257): error:  #20: identifier "FMC_BWTR1_BUSTURN" is undefinedFMC_BWTR1_BUSTURN | FMC_BWTR1_ACCMOD));
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(257): error:  #20: identifier "FMC_BWTR1_ACCMOD" is undefinedFMC_BWTR1_BUSTURN | FMC_BWTR1_ACCMOD));
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(269): error:  #20: identifier "FMC_Bank1E" is undefinedFMC_Bank1E->BWTR[FMC_NORSRAMInitStruct->FMC_Bank] = 0x0FFFFFFF;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(321): error:  #20: identifier "FMC_Bank1" is undefinedFMC_Bank1->BTCR[FMC_Bank] |= BCR_MBKEN_SET;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(326): error:  #20: identifier "FMC_Bank1" is undefinedFMC_Bank1->BTCR[FMC_Bank] &= BCR_MBKEN_RESET;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c(394): error:  #20: identifier "FMC_Bank2" is undefinedFMC_Bank2->PCR2 = 0x00000018;
..\..\CodeFile\Bsp\stm32f4xx_fmc.c: 0 warnings, 30 errors
compiling stm32f4xx_fsmc.c...

就是说一堆的宏没有定义。

原因：

stm32f4xx_fmc.c的在固件库中的一个外设，仅作用于STM32F429_439xx、STM32F446xx、STM32F469_479xx、STM32F427_437xx系列的芯片，如果不是这些芯片的话将不会引用stm32f4xx_fmc.h这个头文件，也就产生了宏没有定义的问题。

具体的说，我们在Option for Target的C++选项卡的Define填写了当前所使用芯片的所属系列。

而这个宏在stm32f4xx_conf.h文件中进入的分支并没有引用stm32f4xx_fmc.h这个头文件。

解决：

不要再Keil的分组中添加stm32f4xx_fmc.c文件，删除后重新编译即可。

参考博客1：https://blog.csdn.net/BobHHH/article/details/81018862
参考博客2：https://blog.csdn.net/Cowena/article/details/49994743

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STM32F40xx搭建Keil工程编译错误（stm32f4xx_fmc.c）

状况：

原因：

解决：

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