03 基于 STM32 的温度控制系统

前言

Protues、KeilC

设计内容：使用STM32设计一个空调温度的显示控制系统

设计要求：

1.温度显示范围为16-30摄氏度

2.按键K1实现显示温度加1，按键K2实现显示温度减1，低于16°或高于30°，显示数值不变

3.正常按键蜂鸣器响一次，超出阈值蜂鸣器报警两下

示例代码

#include "utils.h"

u8 emptyLedCols[8] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};

/**
 * main related
 */
long counter = 1;
long number = 17;
int isOutOfRangeBeepTouched = 0;
int outOfRangeCounter = 0;

/**
 * reset all
 */
void resetAll();


void main() {

    u8 keyPressed;

    resetAll();

    while (1) {

        lightTubeByInt(number);

        keyPressed = independentKeyboardScan(0);
        if(keyPressed == KEY1_PRESS) {
			number ++;
			BEEP = !BEEP;
			isOutOfRangeBeepTouched = 0;
			outOfRangeCounter = counter;
        } else if(keyPressed == KEY2_PRESS) {
            number --;
			BEEP = !BEEP;
			isOutOfRangeBeepTouched = 0;
			outOfRangeCounter = counter;
        }

		if(number < 16 || number > 30) {
			if(!isOutOfRangeBeepTouched) {
				if(counter - outOfRangeCounter > 50) {
					BEEP = !BEEP;
					isOutOfRangeBeepTouched = 1;
				}
			}
		}

		delay_ms(5);
        counter++;

    }
}

void resetAll() {
    u8 i;
    printLedWord(8, emptyLedCols);
    for(i=0; i<8; i++) {
        ledCtl(i, 0);
    }
}

实际效果

初始化状态

按一下 KEY_1, 带蜂鸣效果

按两下 KEY_2, 带蜂鸣效果

完