这样使用任意地址位带特性

huo_hu

这样使用任意地址位带特性 [复制链接]

#define RAM_BASE       0x20000000
#define RAM_BB_BASE    0x22000000
#define DEV_BASE       0x40000000
#define DEV_BB_BASE    0x42000000
#define Var_XORBit_BB(VarAddr, BitNumber) (*(vu32 *)(RAM_BB_BASE|((VarAddr - RAM_BASE)<<5)|((BitNumber)<<2))^= 1)
#define Var_ResBit_BB(VarAddr, BitNumber)  (*(vu32 *)(RAM_BB_BASE|((VarAddr - RAM_BASE)<<5)|((BitNumber)<<2)) = 0)
#define Var_SetBit_BB(VarAddr, BitNumber)  (*(vu32 *)(RAM_BB_BASE|((VarAddr - RAM_BASE)<<5)|((BitNumber)<<2)) = 1)
#define Var_GetBit_BB(VarAddr, BitNumber)  (*(vu32 *)(RAM_BB_BASE|((VarAddr - RAM_BASE)<<5)|((BitNumber)<<2)))
#define Dev_XORBit_BB(DevAddr, BitNumber) (*(vu32 *)(DEV_BB_BASE|((DevAddr - DEV_BASE)<<5)|((BitNumber)<<2))^= 1)
#define Dev_ResBit_BB(DevAddr, BitNumber)  (*(vu32 *)(DEV_BB_BASE|((DevAddr - DEV_BASE)<<5)|((BitNumber)<<2)) = 0)
#define Dev_SetBit_BB(DevAddr, BitNumber)  (*(vu32 *)(DEV_BB_BASE|((DevAddr - DEV_BASE)<<5)|((BitNumber)<<2)) = 1)
#define Dev_GetBit_BB(DevAddr, BitNumber)  (*(vu32 *)(DEV_BB_BASE|((DevAddr - DEV_BASE)<<5)|((BitNumber)<<2)))

 

#define  TIM_IT_Update_Bit  0

 

if (Dev_GetBit_BB(((u32)&(TIM3->SR)),TIM_IT_Update_Bit)

huo_hu

自己顶，应该很有用