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#include <reg52.h> //調(diào)用單片機(jī)頭文件
#define uchar unsigned char //無符號字符型宏定義變量范圍0~255
#define uint unsigned int //無符號整型宏定義變量范圍0~65535
#include <intrins.h>
//數(shù)碼管段選定義 0 1 2 3 4 5 6 7 8 9
uchar code smg_du[]={0x28,0xe1,0x32,0xa2,0x54,0xa1,0x21,0xea,0x20,0xa0,
0x60,0x25,0x39,0x26,0x31,0x71,0xff}; //斷碼
//數(shù)碼管位選定義
uchar code smg_we[]={0xef,0xdf,0xbf,0x7f};
uchar dis_smg[8] = {0};
uchar smg_i = 4; //顯示數(shù)碼管的個位數(shù)
sbit beep = P2^3; //蜂鳴器IO口定義
bit flag_lj_en; //按鍵連加使能
bit flag_lj_3_en; //按鍵連3次連加后使能加的數(shù)就越大了
uchar key_time,key_value; //用做連加的中間變量
bit key_500ms ;
bit flag_300ms ;
uchar menu_1; //菜單設(shè)計的變量
uint t_high = 300; //上限報警值
sbit hx711_dout=P2^7;
sbit hx711_sck=P2^6;
long weight;
unsigned long HX711_Buffer = 0;
unsigned long Weight_Maopi = 0;
uint temp,qi_weight;
bit chaozhong_flag;
bit leiji_flag;
uchar flag_200ms ;
#define GapValue 437.0
uint temp,qi_weight;
bit chaozhong_flag;
bit leiji_flag;
/***********************1ms延時函數(shù)*****************************/
void delay_1ms(uint q)
{
uint i,j;
for(i=0;i<q;i++)
for(j=0;j<120;j++);
}
/***********************數(shù)碼顯示函數(shù)*****************************/
void display()
{
static uchar i;
i++;
if(i >= smg_i)
i = 0;
P1 = 0xff; //消隱
P3 = smg_we[i]; //位選
P1 = dis_smg[i]; //段選
}
/*************定時器0初始化程序***************/
void time_init()
{
EA = 1; //開總中斷
TMOD = 0X01; //定時器0、定時器1工作方式1
ET0 = 1; //開定時器0中斷
TR0 = 1; //允許定時器0定時
}
/********************獨(dú)立按鍵程序*****************/
uchar key_can; //按鍵值
void key() //獨(dú)立按鍵程序
{
static uchar key_new;
key_can = 20; //按鍵值還原
P2 |= 0x07;
if((P2 & 0x07) != 0x07) //按鍵按下
{
if(key_500ms == 1) //連加
{
key_500ms = 0;
key_new = 1;
}
delay_1ms(1); //按鍵消抖動
if(((P2 & 0x07) != 0x07) && (key_new == 1))
{ //確認(rèn)是按鍵按下
key_new = 0;
switch(P2 & 0x07)
{
case 0x06: key_can = 3; break; //得到k2鍵值
case 0x05: key_can = 2; break; //得到k3鍵值
case 0x03: key_can = 1; break; //得到k4鍵值
}
flag_lj_en = 1; //連加使能
}
}
else
{
if(key_new == 0)
{
key_new = 1;
flag_lj_en = 0; //關(guān)閉連加使能
flag_lj_3_en = 0; //關(guān)閉3秒后使能
key_value = 0; //清零
key_time = 0;
key_500ms = 0;
}
}
}
/****************按鍵處理數(shù)碼管顯示函數(shù)***************/
void key_with()
{
if(key_can == 1) //設(shè)置鍵
{
menu_1 ++;
if(menu_1 >= 2)
{
menu_1 = 0;
smg_i = 4; //數(shù)碼管顯示3位
flag_300ms = 1;
}
}
if(menu_1 == 1) //設(shè)置高溫報警
{
smg_i = 4; //數(shù)碼管顯示4位
if(key_can == 2)
{
if(flag_lj_3_en == 0)
t_high += 10 ; //按鍵按下未松開自動加三次
else
t_high += 100; //按鍵按下未松開自動加三次之后每次自動加10
if(t_high > 9990)
t_high = 9990;
}
if(key_can == 3)
{
if(flag_lj_3_en == 0)
t_high -= 10 ; //按鍵按下未松開自動減三次
else
t_high -= 100; //按鍵按下未松開自動減三次之后每次自動減10
if(t_high <= 10)
t_high = 10;
}
dis_smg[0] = smg_du[t_high / 10 % 10]; //取小數(shù)顯示
dis_smg[1] = smg_du[t_high / 100 % 10] ; //取個位顯示
dis_smg[2] = smg_du[t_high / 1000 % 10] & 0xdf; //取十位顯示
dis_smg[3] = 0x64; //H
}
}
/****************報警函數(shù)***************/
void clock_h_l()
{
static uchar value;
if(weight >= t_high)
{
value ++; //消除實(shí)際距離在設(shè)定距離左右變化時的干擾
if(value >= 2)
{
beep = ~beep; //蜂鳴器報警
}
}
else
{
beep = 1;
}
}
void Delay__hx711_us(void)
{
_nop_();
_nop_();
}
unsigned long HX711_Read(void) //增益128
{
unsigned long count;
unsigned char i;
hx711_sck=0;
Delay__hx711_us();
hx711_dout=1;
while(hx711_dout==0);
for(i=0;i<24;i++)
{
hx711_sck=0;
count=count<<1;
hx711_sck=1;
if(hx711_dout)
count++;
}
hx711_sck=1;
count=count^0x8000;//下降沿來時，轉(zhuǎn)換數(shù)據(jù)
Delay__hx711_us();
hx711_sck=0;
return(count);
}
void get_weight() //獲取被測物體重量
{
weight = HX711_Read();
weight = weight - Weight_Maopi; //獲取凈重
if(weight > 0)
{
weight = (unsigned int)((float)weight/GapValue); //計算實(shí)物的實(shí)際重量
}
else
{
weight = 0;
}
}
/****************主函數(shù)***************/
void main()
{
time_init(); //初始化定時器
while(1)
{
key(); //按鍵程序
if(key_can < 10)
{
key_with(); //設(shè)置報警壓力
}
if(flag_300ms == 1) //300ms 處理一次壓力程序
{
flag_300ms = 0;
get_weight(); //獲取被測物體重量
clock_h_l(); //報警函數(shù)
if(menu_1 == 0)
{
smg_i = 4;
dis_smg[0] = smg_du[weight % 10]; //取壓力的小數(shù)顯示
dis_smg[1] = smg_du[weight / 10 % 10] ; //取壓力的個位顯示
dis_smg[2] = smg_du[weight / 100 % 10] ; //取壓力的十位顯示
dis_smg[3] = smg_du[weight / 1000 % 10] & 0xdf; //取壓力的百位顯示
}
}
display(); //數(shù)碼管顯示函數(shù)
}
}
/*************定時器0中斷服務(wù)程序***************/
void time0_int() interrupt 1
{
static uchar value; //定時2ms中斷一次
TH0 = 0xf8;
TL0 = 0x30; //2ms
value++;
if(value >= 100)
{
value = 0;
flag_300ms = 1;
}
if(flag_lj_en == 1) //按下按鍵使能
{
key_time ++;
if(key_time >= 250) //500ms
{
key_time = 0;
key_500ms = 1; //500ms
key_value ++;
if(key_value > 3)
{
key_value = 10;
flag_lj_3_en = 1; //3次后1.5秒連加大些
}
}
}
}

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