mdk编译器切换为v6.4后报错

[Qitas]

由MDK（5.20）默认的编译器v5.06切换到v6.4，会在core_cm3.c文件中报错，求解决方案。
*** Using Compiler 'V6.4', folder: 'C:\Keil_v5\ARM\ARMCLANG\Bin'
Build target 'Yuenjee'
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(445): error: non-ASM statement in naked function is not supported
uint32_t result=0;
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(442): note: attribute is here
uint32_t __get_PSP(void) __attribute__( ( naked ) );
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(465): error: parameter references not allowed in naked functions
"BX lr \n\t" : : "r" (topOfProcStack) );
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(461): note: attribute is here
void __set_PSP(uint32_t topOfProcStack) __attribute__( ( naked ) );
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(479): error: non-ASM statement in naked function is not supported
uint32_t result=0;
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(476): note: attribute is here
uint32_t __get_MSP(void) __attribute__( ( naked ) );
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(499): error: parameter references not allowed in naked functions
"BX lr \n\t" : : "r" (topOfMainStack) );
^
..\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c(495): note: attribute is here
void __set_MSP(uint32_t topOfMainStack) __attribute__( ( naked ) );
^
4 errors generated.
compiling core_cm3.c...
".\Obj\Project.axf" - 4 Error(s), 0 Warning(s).

[weixin_42607138]

这个问题是因为core_cm3.c和core_cm3.h文件太老导致的，没猜错的话这个文件还是2009年的版本，ST已经停止维护。
解决办法：下载STM32cube_FW软件包，Drivers\CMSIS\Include目录下拷贝cmsis_armcc_V6.h、core_cm3.h、core_cmFunc.h、core_cmInstr.h这几个文件覆盖掉老的core_cm3.h文件，然后停用core_cm3.c，改用CMSIS标准接口。
方法如下图：

这是ARM的官方标准接口，坏处是CMSIS标准接口屏蔽了实现细节，但这是趋势。
以上建议，希望采纳！