以下是stm32f4xx.h中对GPIO的定义。3 B$ `' J: N5 g/ g1 ?1 E
- typedef struct9 X) r6 Y D6 t; `6 p
- {
o2 M0 \2 I- g - __IO uint32_t MODER; /*!< GPIO port mode register, Address offset: 0x00 */' i8 ?5 W: Q! S$ [1 m
- __IO uint32_t OTYPER; /*!< GPIO port output type register, Address offset: 0x04 */0 n8 W$ ~& z( z- _( _
- __IO uint32_t OSPEEDR; /*!< GPIO port output speed register, Address offset: 0x08 */5 z$ F$ k0 a; j
- __IO uint32_t PUPDR; /*!< GPIO port pull-up/pull-down register, Address offset: 0x0C */. `! Z) P- s) ^9 k1 ]6 \- W
- __IO uint32_t IDR; /*!< GPIO port input data register, Address offset: 0x10 */
: g3 l4 E$ k" o - __IO uint32_t ODR; /*!< GPIO port output data register, Address offset: 0x14 */
; e1 Q7 R# t+ e3 u% Z+ [ - __IO uint16_t BSRRL; /*!< GPIO port bit set/reset low register, Address offset: 0x18 */, q! k( w0 H) X* U S1 W
- __IO uint16_t BSRRH; /*!< GPIO port bit set/reset high register, Address offset: 0x1A */7 ~" D) L8 X3 w+ Y
- __IO uint32_t LCKR; /*!< GPIO port configuration lock register, Address offset: 0x1C */$ s. `' n/ V$ h! k% ]
- __IO uint32_t AFR[2]; /*!< GPIO alternate function registers, Address offset: 0x20-0x24 */: s& L9 t" i e
- } GPIO_TypeDef;
8 @. h. p: v+ ?- F2 \4 M( D% y' |0 l9 A; T
以下是stm32f10x.h中对GPIO的定义。: P1 C1 J; C$ e& v N
- typedef struct
0 i+ A7 l. x8 S - {
& p# Z! P# k% [9 v5 H - __IO uint32_t CRL;; r6 M4 ?4 _* w6 E2 x' c
- __IO uint32_t CRH;
7 O2 q1 I0 ]% @2 [- R. U- l5 u* F - __IO uint32_t IDR;
4 s* [' B; j. e" d4 ]* H! @ - __IO uint32_t ODR;# i+ m6 U. [# k' f6 I& Z
- __IO uint32_t BSRR;
" N! f; d4 a, k' f8 k1 T5 r; d - __IO uint32_t BRR;
A# m% e! x. }2 [' d* d5 f - __IO uint32_t LCKR;
0 n# W! W# h8 V5 P/ Z& @% ~ - } GPIO_TypeDef;: f7 L ?; s8 B/ `6 m: s- `+ z
: @3 A7 n7 i$ PF1的CRL、CRH用于配置输入输出、推完开漏模式、速度、上下拉输入、复用输出，和F4的MODER、OTYPER、OSPEEDR、PUPDR、AFR[2]等效。# O! I% F# g) O
3 {, r& Z/ w0 C
IDR和ODR都是一样的，输入输出寄存器。0 T5 L; b# ]3 _; G# E) W7 D i
* n$ P) F- P& N I* h# O; S. G2 {F1的BSRR的低16位是置位，F4的BSRRL是置位。（F1的BSRR高16位和BRR等效，都是复位）4 }% F5 ^' H$ n( E
9 j% ]. |! h# g! X& I: bF1的BRR是复位，F4的BSRRH是复位。" l2 m) e5 z9 P8 G% M( L: L
3 g7 b/ b" z* U& L& x) G
LCKR是锁存配置，一般不用。/ C9 ^. ^3 v1 e; q7 s
' x! u- y: k# X V: b然后F1的AFIO是独立的，不在GPIO的结构体里。/ R9 u+ Q" |# o/ n4 m
; K r2 O8 r2 p p. }- U, I
下面举个F4设置IO电平的例子：4 v# h2 z5 s; Z1 z- q% S
- #define CONVST_1() GPIOC->BSRRL = GPIO_Pin_6: ^: A- N8 C- i2 ~4 H0 G
- #define CONVST_0() GPIOC->BSRRH = GPIO_Pin_63 p2 M5 l! A/ R2 W
F1设置IO电平的例子： q! f% p( X) v1 {. U1 ]9 _1 U
- #define CONVST_1() GPIOC->BSRR = GPIO_Pin_6) X3 v. M3 i* Z. _% D
- #define CONVST_0() GPIOC->BRR = GPIO_Pin_6
; z, p' r; {5 U8 d6 x) X
. V7 q7 P6 f- }) F O4 ~操作之前记得初始化！
. C) I5 |" E2 E. f————————————————% w" T. @) P4 j
版权声明：小盼你最萌哒3 h; M: D/ P0 u3 h
如有侵权请联系删除2 o& z c' X3 \1 n# |
|
微信公众号
手机版
