【MCU实战经验】STM32F407使用位绑定区操作IO引脚

scotthsl · 2014-04-21T02:03:05+00:00

参考正点原子F103系列的代码，对F407进行了适配，同时代码也兼容F1系列的1 ?# {: Q6 w: H/ L6 Y q5 h. | ' [* n1 `+ f$ D4 o% q9 c代码在F4Discovery上验证通过，使用位绑定别名区来操作板子上的四个用户LED7 ?& U5 o+ Y9 ]5 ~" l$ I) l 8 t1 c% ]6 ~! o$ D : _, B7 T# f. \' f// Header : - p% I$ I( _: v// File Name:bit_banding.h" {+ l+ c4 a2 b4 I // Author :***8 [, ^$ K3 x( Z0 l5 @ // Date :2014/04/04 - ?4 f/ o! D* [5 J6 V( X// Explain : " N$ h: L4 k: _4 ? #ifndef __BIT_BANDING_H__3 c; J& L; a2 ] D #define __BIT_BANDING_H__* W' O% l8 a7 |' i+ M ( [/ k) o* m3 V9 E7 _( @ 6 Y' Z$ H4 K6 x: _6 l8 o+ } //M4内核的GPIO寄存器基地址等' H% \4 z+ [' e1 c! X' H# q #if defined (STM32F40_41xxx) || defined (STM32F427_437xx) || defined (STM32F429_439xx) || defined (STM32F401xx) || defined (STM32F40XX) || defined (STM32F427X) 4 a8 e: {% e" [) o- `8 H' Z) I+ U//这些宏定义在使用最新库函数时，都会有定义1 T2 ~- k0 k n# s3 p * t K. F& ~7 S8 l. S6 F #include "stm32f4xx.h". z [$ s5 w$ p0 n 8 M6 z- d7 g) P4 @. B6 i #define GPIO_REG_ADDR_BASE 0x40020000ul 7 j1 N& h3 S% o#define GPIO_REG_ADDR_OFFSET 0x400ul( t8 A9 y4 d( V) g* h9 u5 } . R- ^8 Z* o2 u: D% I( z#define GPIO_ODR_OFFSET 0x14ul 4 ~4 _; b. _, U#define GPIO_IDR_OFFSET 0x10ul( G0 e2 A* \) ]! w0 L* {" `- k$ f ! L( ?9 D! ^4 ^ #endif8 }8 m" _$ D+ y' O* n0 d 7 L9 ^ G9 N2 _" d' u/ [//M3内核的GPIO寄存器基地址2 Y1 W( [$ w4 m #if defined (STM32F10X_LD) || defined (STM32F10X_LD_VL) || defined (STM32F10X_MD) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD) || defined (STM32F10X_HD_VL) || defined (STM32F10X_XL) || defined (STM32F10X_CL) . ^! ?/ S7 ^# q( n) v9 D7 }$ Y ) [$ n) T5 s6 _2 E) Y #include "stm32f10x.h"7 K7 W& ?! s) {( S+ i, G' k8 K, j+ j& } 1 X( u$ D3 C; a8 }0 H- {+ s#define GPIO_REG_ADDR_BASE 0x40010800ul, Z0 [1 f* B; f: P" E @" a/ c8 u #define GPIO_REG_ADDR_OFFSET 0x400ul ) X% W* v- p. }6 i; q' d 1 F! ~" {) A! b; V# V0 {+ } #define GPIO_ODR_OFFSET 0x0Cul" Z# k% b* z2 o) y9 p #define GPIO_IDR_OFFSET 0x08ul { d" W, _4 X2 r. M5 B( a1 g4 P ; B7 q( @9 c( o6 `#endif! Z, G9 y2 k% n" P% }. {+ C+ E 1 K; N/ u0 W# \3 g 1 f0 R" |9 ^+ S' G# \' c# U+ ^//别名区的基地址的末地址，在M3和M4中是一样的，位地址的计算公式也是一样的8 S& V& f1 r* A+ n 6 W9 \' _) v3 A! D& j8 Z //外设别名区的基地址) ~$ h$ N, l; g; F/ E #define BIT_BAND_ALIAS_PERIPHERAL_BASE 0x42000000ul 3 f' U9 ?8 M$ S- }# X) a& U # a3 I- f: J. m) R8 i #define BIT_BAND_ALIAS_PERIPHERAL_END 0x43FFFFFFul6 L4 e2 c! r4 n4 y( r% T- P , S5 E' Y6 m$ i //SRAM别名区基地址 ) d7 ?, S, r- `/ ^. k1 T0 @#define BIT_BAND_ALIAS_SRAM_BASE 0x22000000ul6 d; ]' h, u% b" x: l // ! E9 Z) G- D2 c2 y% y#define BIT_BAND_ALIAS_SRAM_END 0x23FFFFFFul3 ^; w! D4 o5 Z3 J9 o- k& ^ 8 P9 D' p8 N. G5 I8 k2 p; w _7 ~4 ]9 ]- @8 ], |. I: i/ |7 ? //在bitband区中位地址的计算公式 , }6 u8 M4 M: i2 \( @#define BIT_WORD_ADDR(ByteAddr, BitNumber) ((ByteAddr&0xF0000000) + 0x2000000 + (ByteAddr&0x000FFFFF)*32 + (BitNumber&0x0000000F)*4)' d. e9 A4 j) \, M % c e: i, h- Y- E0 g4 m* m " y [4 e$ b# ?) w @ //将地址转换成指针，这样才能读写地址中的值 8 D8 Z2 f6 j3 d6 h+ [; M#define CONVERT_TO_PTR(BitWordAddr) ( *( (volatile unsigned long *)BitWordAddr ) ) ) R5 k2 c0 c) \; x$ A( s( l7 t8 h f 1 W) }) w; e: w6 I" I3 ]4 Q) X0 ~2 L: s6 F$ @" ]1 y //BitNumber

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scotthsl 发布时间：2014-4-21 10:03

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参考正点原子F103系列的代码，对F407进行了适配，同时代码也兼容F1系列的

代码在F4Discovery上验证通过，使用位绑定别名区来操作板子上的四个用户LED

// Header :
// File Name:bit_banding.h
// Author :***
// Date :2014/04/04
// Explain :
#ifndef __BIT_BANDING_H__
#define __BIT_BANDING_H__

//M4内核的GPIO寄存器基地址等
#if defined (STM32F40_41xxx) || defined (STM32F427_437xx) || defined (STM32F429_439xx) || defined (STM32F401xx) || defined (STM32F40XX) || defined (STM32F427X)
//这些宏定义在使用最新库函数时，都会有定义

#include "stm32f4xx.h"

#define GPIO_REG_ADDR_BASE 0x40020000ul
#define GPIO_REG_ADDR_OFFSET 0x400ul

#define GPIO_ODR_OFFSET 0x14ul
#define GPIO_IDR_OFFSET 0x10ul

#endif

//M3内核的GPIO寄存器基地址
#if defined (STM32F10X_LD) || defined (STM32F10X_LD_VL) || defined (STM32F10X_MD) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD) || defined (STM32F10X_HD_VL) || defined (STM32F10X_XL) || defined (STM32F10X_CL)

#include "stm32f10x.h"

#define GPIO_REG_ADDR_BASE 0x40010800ul
#define GPIO_REG_ADDR_OFFSET 0x400ul

#define GPIO_ODR_OFFSET 0x0Cul
#define GPIO_IDR_OFFSET 0x08ul

#endif

//别名区的基地址的末地址，在M3和M4中是一样的，位地址的计算公式也是一样的

//外设别名区的基地址
#define BIT_BAND_ALIAS_PERIPHERAL_BASE 0x42000000ul

#define BIT_BAND_ALIAS_PERIPHERAL_END 0x43FFFFFFul

//SRAM别名区基地址
#define BIT_BAND_ALIAS_SRAM_BASE 0x22000000ul
//
#define BIT_BAND_ALIAS_SRAM_END 0x23FFFFFFul

//在bitband区中位地址的计算公式
#define BIT_WORD_ADDR(ByteAddr, BitNumber) ((ByteAddr&0xF0000000) + 0x2000000 + (ByteAddr&0x000FFFFF)*32 + (BitNumber&0x0000000F)*4)

//将地址转换成指针，这样才能读写地址中的值
#define CONVERT_TO_PTR(BitWordAddr) ( *( (volatile unsigned long *)BitWordAddr ) )

//BitNumber