stm32f107 引脚remap问题

[tr10064471]

stm32f10x.h文件中程序

#if !defined (STM32F10X_LD) && !defined (STM32F10X_LD_VL) && !defined (STM32F10X_MD) && !defined (STM32F10X_MD_VL) && !defined (STM32F10X_HD) && !defined (STM32F10X_XL) && !defined (STM32F10X_CL)

/* #define STM32F10X_LD */
/* #define STM32F10X_LD_VL */
/* #define STM32F10X_MD */
/* #define STM32F10X_MD_VL */
/* #define STM32F10X_HD */
/* #define STM32F10X_XL */

#define STM32F10X_CL

#endif

main一段程序为（加了头文件stm32f10x.h）

#ifdef STM32F10X_CL
/*GPIOB Configuration: TIM3 channel1, 2, 3 and 4 */
GPIO_SetBits(GPIOD,GPIO_Pin_2);

GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOC, &GPIO_InitStructure);


#else
GPIO_SetBits(GPIOD,GPIO_Pin_3);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure);
#endif

用led灯测试，程序的是else分支，到底为何？

[Peasant_Lee]

#if !defined (STM32F10X_LD) && !defined (STM32F10X_LD_VL) && !defined (STM32F10X_MD) && !defined (STM32F10X_MD_VL) && !defined (STM32F10X_HD) && !defined (STM32F10X_XL) && !defined (STM32F10X_CL)

因为你上面的这些有些已经预编译，define 过了吧？

[li_hai_quan]

#define STM32F10X_CL 未被上面的定义通过，所以到ELSE中


GPIO_Mode_AF_PP引脚第2功能