问题描述
我面临一个愚蠢的问题,尽管一切都必须正常进行。我的任务是-使用联合和结构的数据类型初始化I / O寄存器。我仅使用我的名字进行初始化,因此可以避免由于重新定义系统变量而导致的错误。但是,编译器仍然向我显示所有创建的变量的错误,因为它们已在项目中的其他地方初始化。我有用于初始化变量的代码:
volatile SYSCFG_t* mysyscfg=(volatile SYSCFG_t*)MYSYSCFG;
volatile RCC_AHB2ENR_t* myrcc_ahb2enr=(volatile RCC_AHB2ENR_t*)(MYRCC|MYAHB2ENR_OFFS);
volatile RCC_APB2ENR_t* myrcc_apb2enr=(volatile RCC_APB2ENR_t*)(MYRCC|MYAPB2ENR_OFFS);
volatile GPIO_t* mygpiob=(volatile GPIO_t*)MYGPIOB;
volatile GPIO_t* mygpioe=(volatile GPIO_t*)MYGPIOE;
volatile GPIO_t* mygpioa=(volatile GPIO_t*)MYGPIOA;
我成为的错误是跟随者:
src/main.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:262: multiple definition of `mysyscfg'
src/init.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:262: first defined here
src/main.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:263: multiple definition of `myrcc_ahb2enr'
src/init.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:263: first defined here
src/main.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:264: multiple definition of `myrcc_apb2enr'
src/init.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:264: first defined here
src/main.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:265: multiple definition of `mygpiob'
src/init.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:265: first defined here
src/main.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:266: multiple definition of `mygpioe'
src/init.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:266: first defined here
src/main.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:267: multiple definition of `mygpioa'
src/init.o:/home/bogdan/workspace/timers/Debug/../src/lib.h:267: first defined here
collect2: error: ld returned 1 exit status
make: *** [makefile:62: timers.elf] Error 1
解决方法
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