yzfh
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
#ifndef __BITBAND_H
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#define __BITBAND_H
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#include <stm32f10x_conf.h>
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// 计算位带地址的宏，addr表示实际地址，
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// bitnum表示实际地址位的编号
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// 0x2000 0101 - 5 ---> 0x2202 0214
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#define BITBAND(addr, bitnum) \
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((addr&0xF0000000) + 0x2000000 + \
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((addr & 0xFFFFF) << 5) + (bitnum << 2))
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#define MEM_ADDR(addr) *(volatile unsigned int *)(addr)
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// 根据实际地址和位编号，返回位带的地址的指针并解引用。
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#define BIT_BAND(addr, bitnum) MEM_ADDR(BITBAND(addr, bitnum))
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#define GPIOA_IDR_ADDR (GPIOA_BASE + 0x08)
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#define GPIOA_ODR_ADDR (GPIOA_BASE + 0x0C)
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#define GPIOB_IDR_ADDR (GPIOB_BASE + 0x08)
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#define GPIOB_ODR_ADDR (GPIOB_BASE + 0x0C)
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#define GPIOC_IDR_ADDR (GPIOC_BASE + 0x08)
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#define GPIOC_ODR_ADDR (GPIOC_BASE + 0x0C)
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#define GPIOD_IDR_ADDR (GPIOD_BASE + 0x08)
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#define GPIOD_ODR_ADDR (GPIOD_BASE + 0x0C)
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#define GPIOE_IDR_ADDR (GPIOE_BASE + 0x08)
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#define GPIOE_ODR_ADDR (GPIOE_BASE + 0x0C)
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#define PAOut(n) BIT_BAND(GPIOA_ODR_ADDR, n)
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#define PAIn(n) BIT_BAND(GPIOA_IDR_ADDR, n)
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#define PBOut(n) BIT_BAND(GPIOB_ODR_ADDR, n)
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#define PBIn(n) BIT_BAND(GPIOB_IDR_ADDR, n)
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#define PCOut(n) BIT_BAND(GPIOC_ODR_ADDR, n)
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#define PCIn(n) BIT_BAND(GPIOC_IDR_ADDR, n)
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#define PDOut(n) BIT_BAND(GPIOD_ODR_ADDR, n)
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#define PDIn(n) BIT_BAND(GPIOD_IDR_ADDR, n)
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#define PEOut(n) BIT_BAND(GPIOE_ODR_ADDR, n)
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#define PEIn(n) BIT_BAND(GPIOE_IDR_ADDR, n)
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#endif // __BITBAND_H
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