STM32F334R8T6-NUCLEO小实验

[复制链接]

二宽发布时间：2015-5-21 12:16

技术帖
文章封面:	-
文章简介:	-

小弟初学者，0521一上午的成果
功能描述：STM32F334R8T6-NUCLEO开发板平台，使用USER按键为中断源，每按一下按键，LD2改变一下状态。

赞收藏评论4 发布时间：2015-5-21 12:16

4个回答

二宽回答时间：2015-5-21 12:19:03

#include "stm32f30x.h"

#define uint unsigned int
#define uchar unsigned char

uint i,j,k;
uchar h=0;
void NVIC_Configuration ();
void GPIO_Configuration ();
int main()
{

GPIO_Configuration ();
NVIC_Configuration ();

GPIO_SetBits(GPIOA, GPIO_Pin_5);
while(1)
{

}
}

void NVIC_Configuration (void)
{

NVIC_InitTypeDef NVIC_Initstructure;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_Initstructure.NVIC_IRQChannel=EXTI15_10_IRQn;
NVIC_Initstructure.NVIC_IRQChannelPreemptionPriority=0;
NVIC_Initstructure.NVIC_IRQChannelSubPriority=0;
NVIC_Initstructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_Initstructure);
}

void GPIO_Configuration (void)
   {
   GPIO_InitTypeDef GPIO_InitStructure;
   EXTI_InitTypeDef EXTI_InitStructure;
   RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA|RCC_AHBPeriph_GPIOC, ENABLE);

GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
   GPIO_Init(GPIOC,&GPIO_InitStructure);
   //GPIO_PinAFConfig(GPIOC, GPIO_PinSource13, GPIO_AF);

   GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
   GPIO_Init(GPIOA,&GPIO_InitStructure);

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
   SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource13);
EXTI_InitStructure.EXTI_Line = EXTI_Line13;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

   }
下面是中断服务函数  放在it.c中
void EXTI15_10_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line13)==1)
{
   GPIO_WriteBit(GPIOA,GPIO_Pin_5,(BitAction)((1-GPIO_ReadOutputDataBit(GPIOA,GPIO_Pin_5))));
   EXTI_ClearFlag(EXTI_Line13);
}

}

赞评论

二宽回答时间：2015-5-21 12:19:21

#include "stm32f30x.h"
6 k5 R+ v. G. Q- F6 ?
2 z D7 [- P% I
#define uint unsigned int3 D; `0 H/ D1 h
#define uchar unsigned char
; X' R; W' e. g. f2 S& |5 z
, D, ^8 R1 G) [% m3 e) o/ t# g
7 H/ ^; y4 {3 m+ M
1 h- V: w2 ?' x2 E
uint i,j,k;
( x9 F3 l: l7 ]
uchar h=0;
[2 o5 ~, J8 U- u L' j
void NVIC_Configuration ();8 z6 {# S7 M' X/ X2 Y
void GPIO_Configuration ();
! F' E9 x8 u6 M2 h' m) E
int main()( m6 F4 Q: s0 S/ g* t
{
4 Z7 a) m$ m. p, m& g M9 ~
_" R9 @2 h0 D3 l6 r# m
GPIO_Configuration ();6 j3 U) W# [1 D. J$ r
NVIC_Configuration ();
& Z& s5 }0 b- |; S6 T. u5 C
6 ^) w/ v; d6 f0 P
GPIO_SetBits(GPIOA, GPIO_Pin_5);! h# x7 G T6 j h3 [
while(1)
, W& h2 i7 c6 M8 c- }8 o1 O
{! j( h8 w6 i1 P2 @& N% k
! o8 Q! w. s; [6 K: `# [8 a7 Q: R
3 _# P6 [, B; W# \$ G Z( M& W
}
% ~, W3 T3 { Q( ^, R. @7 z; j* F
}
+ g' W6 F0 h* @. L- b
0 z$ m2 n7 e8 }" `- L
1 s$ p& C1 C. @1 Y
void NVIC_Configuration (void)
0 e0 r& K6 L2 G) i7 }( w
{+ I9 i- i8 U' n, L$ u7 e' G+ q
9 {; m, |4 b% ]9 H1 t
NVIC_InitTypeDef NVIC_Initstructure;) v3 n5 I/ t U/ R- N- O
3 k9 }9 X! L d1 r5 V7 l
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
2 R# h% N5 b5 `5 v; c3 E# D' u* y" ?
NVIC_Initstructure.NVIC_IRQChannel=EXTI15_10_IRQn;5 D# F" P: j w% O* {
NVIC_Initstructure.NVIC_IRQChannelPreemptionPriority=0;, W+ z1 X' k! P, V8 c
NVIC_Initstructure.NVIC_IRQChannelSubPriority=0;' g/ y. a: Q4 x1 r7 p
NVIC_Initstructure.NVIC_IRQChannelCmd=ENABLE;
# F X" S* y, z' ?' \2 `( S
NVIC_Init(&NVIC_Initstructure);
}4 b& R* n4 e! V2 W6 C# P/ y
5 Y3 {% ]3 d7 s$ R R3 H
1 u# p0 s' B8 \% O( c2 b
void GPIO_Configuration (void)+ t$ P1 j) H; {
{0 x5 s! F8 d8 z/ M& i& J
GPIO_InitTypeDef GPIO_InitStructure;8 K/ A7 R/ F/ P
EXTI_InitTypeDef EXTI_InitStructure;
7 W9 m1 p N- k
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA|RCC_AHBPeriph_GPIOC, ENABLE);
( {7 h' W2 x) |3 e( c3 `
2 U$ f8 Z8 ]! D3 r# k) X: ^# { o
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;7 [9 F1 z# X' I1 h' A& P3 @
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;. `7 Q: Y5 d% h
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;* G+ T, z Q% o# m& Q1 P O
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
^* n7 [: R( _& O& _
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;' d9 e, t2 J+ f7 D- A% y
GPIO_Init(GPIOC,&GPIO_InitStructure);: a: S9 @' K- {# `) x* Y
//GPIO_PinAFConfig(GPIOC, GPIO_PinSource13, GPIO_AF);
& r# p# ~* t( F: m0 q- A
5 ~1 }+ e! J' `/ o- g9 `4 Z
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;; s- U% U [/ o
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;4 q( z8 I: v( A. v8 c7 Z
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;' _8 u! X( l, g% G b& v
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;% X. H: `7 o0 J; X
//GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
0 p9 w4 q( j# @0 r
GPIO_Init(GPIOA,&GPIO_InitStructure);7 [4 V' ~* I& \% u7 @$ b! x* G8 _
/ J3 @* L4 l! y5 c+ o8 x
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
2 ]8 g% S2 Y E# t
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC, EXTI_PinSource13);. r) @- V7 s2 C8 w, ]6 e% H! O
EXTI_InitStructure.EXTI_Line = EXTI_Line13;
1 C# Q9 j% _2 z9 Y0 ~
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;! E S5 ~3 w4 d/ b4 j! T# p
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
% k, U! O; ?/ w7 G
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
U0 u7 b- e, c0 v1 Y. h* Z
EXTI_Init(&EXTI_InitStructure);$ q9 [& P3 K9 j3 i% l9 H, X" X8 V) g
5 r* T! V: S) K4 n
H& P5 N% D) S% `
}9 v' C+ N0 ?+ c. W& a, R- G
下面是中断服务函数放在it.c中: Q! d6 j. N" D% f7 X
void EXTI15_10_IRQHandler(void)
9 _! _3 V9 C6 J1 i, s. m4 z
{
( ]- _5 p: u& }. Z) R( q: S( p. t
if(EXTI_GetITStatus(EXTI_Line13)==1). I! d J0 r8 t( b* m/ {
{ r) X/ [& P+ h' C" [, O0 x; O% Z
GPIO_WriteBit(GPIOA,GPIO_Pin_5,(BitAction)((1-GPIO_ReadOutputDataBit(GPIOA,GPIO_Pin_5))));' Q# `+ d2 I( V+ s: e _4 N, K
EXTI_ClearFlag(EXTI_Line13);$ o8 q w8 b' J5 G* ?0 T+ K
}
/ Z* B0 {. N/ A7 Z% s! n2 V
7 U/ b: b+ T. E
}