编写 HAL库 stm32f103程序 要求: A0为防抖按钮输入 按下A1时 B9 输出高电平 A1为防抖按钮输入 按下A2时B8输出高电平 A2为防抖按钮输入 按下A1时 B9 输出高电平 A3为防抖按钮输入 按下A2时B8输出高电平
时间: 2024-05-05 14:22:00 浏览: 29
以下是一个基本的程序框架,可以实现上述功能。需要注意的是,防抖处理需要根据实际情况进行调整,以确保准确性和稳定性。
```c
#include "stm32f10x.h"
#define BUTTON_A0_PIN GPIO_Pin_0
#define BUTTON_A0_PORT GPIOA
#define BUTTON_A1_PIN GPIO_Pin_1
#define BUTTON_A1_PORT GPIOA
#define BUTTON_A2_PIN GPIO_Pin_2
#define BUTTON_A2_PORT GPIOA
#define BUTTON_A3_PIN GPIO_Pin_3
#define BUTTON_A3_PORT GPIOA
#define OUTPUT_B8_PIN GPIO_Pin_8
#define OUTPUT_B8_PORT GPIOB
#define OUTPUT_B9_PIN GPIO_Pin_9
#define OUTPUT_B9_PORT GPIOB
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);
// A0, A1, A2, A3 as input with pull-up
GPIO_InitStructure.GPIO_Pin = BUTTON_A0_PIN | BUTTON_A1_PIN | BUTTON_A2_PIN | BUTTON_A3_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// B8, B9 as output
GPIO_InitStructure.GPIO_Pin = OUTPUT_B8_PIN | OUTPUT_B9_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void delay(uint32_t nCount)
{
uint32_t i;
for (i = 0; i < nCount; i++);
}
int main(void)
{
GPIO_Configuration();
while (1)
{
// check button A0
if (GPIO_ReadInputDataBit(BUTTON_A0_PORT, BUTTON_A0_PIN) == RESET)
{
// debounce delay
delay(1000);
// check again
if (GPIO_ReadInputDataBit(BUTTON_A0_PORT, BUTTON_A0_PIN) == RESET)
{
// button A0 pressed, do nothing
}
}
// check button A1
if (GPIO_ReadInputDataBit(BUTTON_A1_PORT, BUTTON_A1_PIN) == RESET)
{
// debounce delay
delay(1000);
// check again
if (GPIO_ReadInputDataBit(BUTTON_A1_PORT, BUTTON_A1_PIN) == RESET)
{
// button A1 pressed, set B9 high
GPIO_SetBits(OUTPUT_B9_PORT, OUTPUT_B9_PIN);
}
}
// check button A2
if (GPIO_ReadInputDataBit(BUTTON_A2_PORT, BUTTON_A2_PIN) == RESET)
{
// debounce delay
delay(1000);
// check again
if (GPIO_ReadInputDataBit(BUTTON_A2_PORT, BUTTON_A2_PIN) == RESET)
{
// button A2 pressed, set B8 high
GPIO_SetBits(OUTPUT_B8_PORT, OUTPUT_B8_PIN);
}
}
// check button A3
if (GPIO_ReadInputDataBit(BUTTON_A3_PORT, BUTTON_A3_PIN) == RESET)
{
// debounce delay
delay(1000);
// check again
if (GPIO_ReadInputDataBit(BUTTON_A3_PORT, BUTTON_A3_PIN) == RESET)
{
// button A3 pressed, set B8 high
GPIO_SetBits(OUTPUT_B8_PORT, OUTPUT_B8_PIN);
}
}
}
}
```