STM32绝对地址的问题

2915683887

1. #define PERIPH_BASE ((unsigned int)0x4000 0000)
   
2. #define APB1PERIPH_BASE PERIPH_BASE
   
3. #define APB2PERIPH_BASE (PERIPH_BASE+0x10000)
   
4. #define AHBPERIPH_BASE (PERIPH_BASE+0x20000)
   
5. 
   
6. #define RCC_BASE  (AHBPERIPH_BASE+0x1000)
   
7. #define GPIOB_BASE (APB2PERIPH_BASE+0x0C00)
   
8. 
   
9. #define RCC_APB2ENR  *(unsigned int*)(RCC_BASE+0x18)
   
10. #define GPIOB_CRL  *(unsigned int*)(GPIOB_BASE+0x00)
    
11. #define GPIOB_CRH  *(unsigned int*)(GPIOB_BASE+0x04)
    
12. #define GPIOB_ODR  *(unsigned int*)(GPIOB_BASE+0x0C)

复制代码

我的问题是：main.c(6): error:  #18: expected a ")"        RCC_APB2ENR|=((1)<<3);
main.c(8): error:  #18: expected a ")"
    GPIOB_CRL|=(1<<(4*0));
main.c(10): error:  #18: expected a ")"
    GPIOB_ODR=~(1<<0);
main.c: 1 warning, 3 errors
"main.c" - 3 Error(s), 1 Warning(s).

2915683887

感觉压力好大...学校不放假

2915683887

吃饱饭回来发现了问题的原因，原来是
#define PERIPH_BASE ((unsigned int)0x4000 0000)
中间的32位地址不能有空格