基于STM32单片机的电子秤仿真程序:Proteus实现
编号:10
基于STM32单片机的电子秤
功能描述:
由STM32F103单片机最小系统+ 4*4矩阵键盘+LCD1602液晶显示+A/D转换模块
1、 采用STM32F103为主控芯片
2、 通过4*4矩阵键盘实输入、功能键,矩阵键盘排列如下
1 2 3 NC
4 5 6 重新测量
7 8 9 删除
NC 0 NC 确认
3、 通过电位器模称重传感器(量程0-5kg)
4、 0-9数字键可输入单价;
5、 按下确认键进行计费;
PROTEUS 8.11版本才可使用
视频演示链接:
10、基于STM32单片机的电子秤
仿真图:
程序源码:
#include "delay.h"
#include "LCD1602.h"
#include "key4.h"
#include "led.h"
#include "timer.h"
#include "adc.h"
#include "stdio.h"
#include "stdlib.h"
unsigned long HX711_Buffer = 0;
int Price_Count = 0;
unsigned char KEY_NUM = 0;
unsigned char Price_Buffer[3] = {0x00,0x00,0x00};
unsigned long Money = 0;
_Bool Flag_OK = 0;
unsigned int Weight = 0; //质量
void Get_Weight(void)
{
u16 adcx = 0; //AD值
float voltage = 0; //电压
adcx = Get_Adc_Average(ADC_Channel_0,10); //AD转换读取
voltage =(float)adcx*(3.3/4095); //ADC值转换为电压值
Weight = voltage * 5000/3.30 ;
}
int main(void)
{
unsigned char cnt=0;
unsigned char buf[20];
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置中断优先级分组为组2:2位抢占优先级,2位响应优先级
Lcd1602_Init(); //液晶1602初始化
loop:Price_Count = 0;
Price_Buffer[0] = 0;
Price_Buffer[1] = 0;
Price_Buffer[2] = 0;
Flag_OK = 0;
Adc_Init();
Key_Init(); //矩阵按键初始化
TIM2_Int_Init(499,7199); //10Khz的计数频率,计数到500为50ms
LED_Init(); //初始化与控制设备连接的硬件接口
Lcd1602_Write_Com(0x80+0x40); //指针设置
Lcd1602_String(0,1,"P: . M: ");
while(1)
{
Get_Weight();
sprintf((char *)buf,(const char *)"Weight:%4.3fkg",(float)Weight/1000);
Lcd1602_String(0,0,buf); //显示
cnt=KeyScan(); //扫描按键键值 值赋给cnt
if(cnt!=0xff) //如果有按键按下
{
if(cnt>='0'&&cnt<='9') //如果按下了0-9之间的数字键
{
Price_Buffer[Price_Count] = cnt - 0x30;
switch(Price_Count)
{
case 0:
Lcd1602_Write_Com(0x80+0x40+2);
Lcd1602_Write_Data(Price_Buffer[0] + 0x30);
break;
case 1:
Lcd1602_Write_Com(0x80+0x40+3);
Lcd1602_Write_Data(Price_Buffer[1] + 0x30);
break;
case 2:
Lcd1602_Write_Com(0x80+0x40+5);
Lcd1602_Write_Data(Price_Buffer[2] + 0x30);
break;
default : break;
}
Price_Count++;
if( Price_Count >= 3)
{
Price_Count = 3;
}
}
else if(cnt=='A') //如果按下了'A'键
{
}
else if(cnt=='B') //如果按下了'B'键 二次测量
{
goto loop;
}
else if(cnt=='C') //如果按下了'C'键
{
Price_Count--;
if( Price_Count < 0)
{
Price_Count = 0;
}
Price_Buffer[Price_Count] = 0; //清除上一个输入的数据
switch(Price_Count)
{
case 0:
Lcd1602_Write_Com(0x80+0x40+2);
Lcd1602_Write_Data(' ');
break;
case 1:
Lcd1602_Write_Com(0x80+0x40+3);
Lcd1602_Write_Data(' ');
break;
case 2:
Lcd1602_Write_Com(0x80+0x40+5);
Lcd1602_Write_Data(' ');
break;
default : break;
}
}
else if(cnt=='D') //如果按下了'D'键
{
Money = Price_Buffer[0] * 100 + Price_Buffer[1] * 10 + Price_Buffer[2];
Money = Money * Weight / 1000;
Lcd1602_Write_Com(0x80+0x40+10);
Lcd1602_Write_Data(Money/1000 + 0x30);
Lcd1602_Write_Data(Money%1000/100 + 0x30);
Lcd1602_Write_Data(Money%100/10 + 0x30);
Lcd1602_Write_Data('.');
Lcd1602_Write_Data(Money%10 + 0x30);
Flag_OK = 1;
}
}
}
}
软件免费下载地址:
1、Proteus仿真软件
文件内容:Proteus7.8安装包、Proteus8.6安装包、Proteus.8.10安装包、Proteus Professional 8.11 SP0安装包
链接:https://pan.baidu.com/s/11LNUZ9BJXWvXf1C4dPc3_w
提取码:2756
3、KEIL5 MDK软件(STM32开发软件)
链接:https://pan.baidu.com/s/1t3eY-3yRdTa7jZMlijq_jg
提取码:ab58
代码下载: