單片機(jī)+DSL-08模塊PM2.5_10檢測LCD1602顯示+DS1302時鐘源程序

ID:224782 · 發(fā)表于 2020-3-18 13:52

一款以DSL-08PM2.5/10檢測模塊為主的檢測裝置，控制器為STC89C52RC，顯示屏為LCD1602。主要可顯示PM2.5和PM10濃度，有報警功能，且報警閾值可通過按鍵設(shè)置。硬件包含DS1302，可按鍵切換顯示時間。附件包含傳感器資料、源程序、PCB工程文件及操作說明供參考。

制作出來的實物圖如下：

1. 模塊上電默認(rèn)顯示PM2.5/10數(shù)據(jù)，按一下“顯示切換”鍵可切換至PM2.5/10報警值設(shè)置界面；再按一次則進(jìn)入時間顯示界面，顯示北京時間；再按可返回初始界面。
2. 在PM2.5/10報警值設(shè)置界面時，按“M“鍵開始設(shè)置數(shù)據(jù)。按下“M”鍵后首位數(shù)據(jù)光標(biāo)閃爍，此時可以按“▲”修改數(shù)值，該位可在0~9內(nèi)遞增變換。“ ”鍵可切換數(shù)據(jù)位，切換到哪一位，該位的光標(biāo)閃爍。
3. 在設(shè)置過程中（即光標(biāo)閃爍時）“顯示切換”鍵不可用，所有數(shù)據(jù)設(shè)置完后再按一次“M“鍵可確認(rèn)數(shù)據(jù)，此時“顯示切換”鍵恢復(fù)功能。
4. 在設(shè)置過程中（即光標(biāo)閃爍時）報警功能暫停，所有數(shù)據(jù)設(shè)置完后再按一次“M“鍵可確認(rèn)數(shù)據(jù)，此時報警功能恢復(fù)。

Altium Designer畫的原理圖和PCB圖如下：(51hei附件中可下載工程文件)

單片機(jī)源程序如下:

#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
#define FOSC 11059200L
#define T1MS (65536 - FOSC / 12 / 500)
sbit DS1302_CLK = P3 ^ 7; //實時時鐘時鐘線引腳
sbit DS1302_IO = P3 ^ 6; //實時時鐘數(shù)據(jù)線引腳
sbit DS1302_RST = P3 ^ 5; //實時時鐘復(fù)位線引腳
sbit ACC0 = ACC^0;
sbit ACC7 = ACC^7;
unsigned char t0,t1,t2,t3,t4,t5;
unsigned char d0,d1,d2,d3,d4,d5;
typedef struct __SYSTEMTIME__
{
unsigned char Second;
unsigned char Minute;
unsigned char Hour;
unsigned char Week;
unsigned char Day;
unsigned char Month;
unsigned char Year;
unsigned char DateString[9];
unsigned char TimeString[9];
}SYSTEMTIME; //定義的時間類型
#define AM(X) X
#define PM(X) (X+12) // 轉(zhuǎn)成24小時制
#define DS1302_SECOND 0x80
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84
#define DS1302_WEEK 0x8A
#define DS1302_DAY 0x86
#define DS1302_MONTH 0x88
#define DS1302_YEAR 0x8C
#define DS1302_RAM(X) (0xC0+(X)*2) //用于計算 DS1302_RAM 地址的宏
uchar cnt_PM25 = 0;//數(shù)碼管PM2.5循環(huán)計數(shù)
uchar R_data = 0;//讀數(shù)據(jù)標(biāo)志
uchar USART_RX_STB = 0;
uchar complete_flag = 0;
uchar USART_RX_BUF[32];//接收緩沖,最大32個字節(jié).
uchar time_js = 0;//判斷串口一幀數(shù)據(jù)是否接收完成的計數(shù)變量
uchar PM25_data[2] = {0};
uchar PM10_data[2] = {0};
uchar PM_ASC[8];//數(shù)據(jù)分解后的存儲數(shù)組
uint PM25_1, PM25_2, PM10_1, PM10_2;
sbit RS = P2 ^ 5; //定義端口
sbit RW = P2 ^ 6;
sbit EN = P2 ^ 7;
#define RS_CLR RS = 0
#define RS_SET RS = 1
#define RW_CLR RW = 0
#define RW_SET RW = 1
#define EN_CLR EN = 0
#define EN_SET EN = 1
#define DataPort P0
uchar key_temp, key_num, display_num = 0, KKK = 0;
uchar mode_flag = 0;
uchar bit_select_counter;
uchar PM_data_buf[8] = {0, 2, 0, 0, 0, 2, 0, 0};
//-------開機(jī)、讀數(shù)據(jù)、關(guān)機(jī)指令----------------------------------
uchar code open[9] = {0xAA, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x66, 0xBB};
uchar code autodata[9] = {0xAA, 0x06, 0x00, 0x00, 0x00, 0x00, 0x01, 0x6B, 0xBB};
//void Delay500ms( ) //@11.0592MHz
//{
// unsigned char i, j, k;
// _nop_( );
// i = 4;
// j = 129;
// k = 119;
// do
// {
// do
// {
// while (--k);
// } while (--j);
// } while (--i);
//}
/*------------------------------------------------
uS延時函數(shù)，含有輸入?yún)?shù) unsigned char t，無返回值
unsigned char 是定義無符號字符變量，其值的范圍是
0~255 這里使用晶振12M，精確延時請使用匯編,大致延時
長度如下 T=tx2+5 uS
------------------------------------------------*/
void DelayUs2x(unsigned int t)
{
while(-- t);
}
/*------------------------------------------------
mS延時函數(shù)，含有輸入?yún)?shù) unsigned char t，無返回值
unsigned char 是定義無符號字符變量，其值的范圍是
0~255 這里使用晶振12M，精確延時請使用匯編
------------------------------------------------*/
void DelayMs(unsigned char t)
{
while(t --)
{
//大致延時1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
/*------------------------------------------------
判忙函數(shù)
------------------------------------------------*/
bit LCD_Check_Busy(void)
{
DataPort= 0xFF;
RS_CLR;
RW_SET;
EN_CLR;
_nop_( );
EN_SET;
return (bit)(DataPort & 0x80);
}
/*------------------------------------------------
寫入命令函數(shù)
------------------------------------------------*/
void LCD_Write_Com(unsigned char com)
{
while(LCD_Check_Busy( )); //忙則等待
RS_CLR;
RW_CLR;
EN_SET;
DataPort = com;
_nop_( );
EN_CLR;
}
//=======數(shù)據(jù)解析===========
void shuju_jiexi(void)
{
uint PM25, PM10;
uint sss;
PM25 = (((uint)PM25_data[0]) << 8) + PM25_data[1];
PM10 = (((uint)PM10_data[0]) << 8) + PM10_data[1];
//------------------------
if(PM25 > 999)
PM25 = 999;
if(PM10 > 1500)
PM10 = 1500;
PM25_1 = PM25;
PM10_1 = PM10;
//===========分解PM2.5的值=========================
sss = PM25;
PM_ASC[0] = sss / 1000;
sss = sss % 1000;
PM_ASC[1] = sss / 100;
sss = sss % 100;
PM_ASC[2] = sss / 10;
PM_ASC[3] = sss % 10;
//
//============分解PM10的值=========================
sss = PM10;
PM_ASC[4] = sss / 1000;
sss = sss % 1000;
PM_ASC[5] = sss / 100;
sss = sss % 100;
PM_ASC[6] = sss / 10;
PM_ASC[7] = sss % 10;
}
void Display_cal( )//顯示切換
{
if(P45 == 0)
{
Delay_1ms(100);
if(P45 == 0 && mode_flag == 0)
{
LCD_Clear( );//清屏
display_num ++;
if(display_num > 2)
{
display_num = 0;
}
}
}
else
{
display_num = display_num;
}
}
uchar Key_Drive( )//鍵值讀取
{
if(P20 == 0)
{
Delay_1ms(100);
if(P20 == 0)
{
key_temp = 1;
}
}
if(P21 == 0)
{
Delay_1ms(100);
if(P21 == 0)
{
key_temp = 2;
}
}
if(P22 == 0)
{
Delay_1ms(100);
if(P22 == 0)
{
key_temp = 3;
}
}
return key_temp;
}
void Set_Drive( )//設(shè)置數(shù)值
{
uchar temp;
temp = Key_Drive( );
key_temp = 0;
if(temp == 2)//選擇修改位置
{
if(mode_flag != 0)
{
bit_select_counter ++;
if(bit_select_counter > 7)
{
bit_select_counter = 0;
}
}
}
if(temp == 3)//修改數(shù)據(jù)值按鍵
{
if(mode_flag != 0)
{
PM_data_buf[bit_select_counter] += 1;
if(PM_data_buf[bit_select_counter] > 9)
{
PM_data_buf[bit_select_counter] = 0;
}
}
}
if(temp == 1)//M
{
bit_select_counter = 0;
mode_flag ++;
if(mode_flag > 1)
{
mode_flag = 0;
}
}
}
//定時器T2，用于顯示, 70ms刷新一次
/******定時器2初始化函數(shù)******/
void Timer2_Init( ) //初始化子函數(shù)
{
T2MOD = 0;//T2定時器，16位自動重裝
T2CON = 0;
TL2 = 0x00;
TH2 = 0x04;
RCAP2L = 0x00;
RCAP2H = 0x04;
TR2 = 1;
EA = 1;
ET2 = 1;
}
void DS1302InputByte(unsigned char d) //實時時鐘寫入一字節(jié)(內(nèi)部函數(shù))
{
unsigned char i;
ACC = d;
for(i=8; i>0; i--)
{
DS1302_IO = ACC0; //相當(dāng)于匯編中的 RRC
DS1302_CLK = 1;
DS1302_CLK = 0;
ACC = ACC >> 1;
}
}
unsigned char DS1302OutputByte(void) //實時時鐘讀取一字節(jié)(內(nèi)部函數(shù))
{
unsigned char i;
for(i=8; i>0; i--)
{
ACC = ACC >>1; //相當(dāng)于匯編中的 RRC
ACC7 = DS1302_IO;
DS1302_CLK = 1;
DS1302_CLK = 0;
}
return(ACC);
}
void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要寫的數(shù)據(jù)
{
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr); // 地址，命令
DS1302InputByte(ucDa); // 寫1Byte數(shù)據(jù)
// DS1302_CLK = 1;
DS1302_RST = 0;
}
unsigned char Read1302(unsigned char ucAddr) //讀取DS1302某地址的數(shù)據(jù)
{
unsigned char ucData;
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr|0x01); // 地址，命令
ucData = DS1302OutputByte(); // 讀1Byte數(shù)據(jù)
// DS1302_CLK = 1;
DS1302_RST = 0;
return(ucData);
}
void DS1302_SetProtect(bit flag) //是否寫保護(hù)
{
if(flag)
Write1302(0x8E,0x10);
else
Write1302(0x8E,0x00);
}
void DS1302_SetTime(unsigned char Address, unsigned char Value) // 設(shè)置時間函數(shù)
{
DS1302_SetProtect(0);
Write1302(Address, ((Value/10)<<4 | (Value%10)));
}
void DS1302_GetTime(SYSTEMTIME *Time)
{
unsigned char ReadValue;
ReadValue = Read1302(DS1302_SECOND);
Time->Second = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); //八進(jìn)制轉(zhuǎn)換成十進(jìn)制
ReadValue = Read1302(DS1302_MINUTE);
Time->Minute = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_HOUR);
Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_DAY);
Time->Day = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_WEEK);
Time->Week = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_MONTH);
Time->Month = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_YEAR);
Time->Year = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
}
void DateToStr(SYSTEMTIME *Time) //
{
Time->DateString[0] = Time->Year/10 ; //分離出個位和十位
Time->DateString[1] = Time->Year%10 ;
Time->DateString[2] = '-';
Time->DateString[3] = Time->Month/10;
Time->DateString[4] = Time->Month%10 ;
Time->DateString[5] = '-';
Time->DateString[6] = Time->Day/10 ;
Time->DateString[7] = Time->Day%10 ;
Time->DateString[8] = '\0';
}
void TimeToStr(SYSTEMTIME *Time)
{
Time->TimeString[0] = Time->Hour/10 ;
Time->TimeString[1] = Time->Hour%10 ;
Time->TimeString[2] = ':';
Time->TimeString[3] = Time->Minute/10 ;
Time->TimeString[4] = Time->Minute%10 ;
Time->TimeString[5] = ':';
Time->TimeString[6] = Time->Second/10;
Time->TimeString[7] = Time->Second%10 ;
Time->DateString[8] = '\0';
}
void Initial_DS1302(void)
{
unsigned char Second=Read1302(DS1302_SECOND);
if(Second&0x80)
DS1302_SetTime(DS1302_SECOND,0);
}
void main( )
{
uchar i;
uint HR_crc = 0;
uint check = 0;
SYSTEMTIME CurrentTime;
P44 = 0;
display_num = 0;
mode_flag = 0;
Serial_Init( ); //串口初始化
Timer0_Init( ); //T0 初始化
LCD_Init( );
LCD_Clear( );//清屏
Initial_DS1302( );
Timer2_Init( );
// DS1302_SetTime(DS1302_YEAR, 20); //設(shè)置時間
// DS1302_SetTime(DS1302_MONTH, 03);
// DS1302_SetTime(DS1302_DAY, 15);
// DS1302_SetTime(DS1302_HOUR, 18); //設(shè)置時間
// DS1302_SetTime(DS1302_MINUTE, 42);
// DS1302_SetTime(DS1302_SECOND, 30);
Delay_1ms(100);
//---------開機(jī)指令--------------------
for(i = 0; i < 9; i ++)
{
Serial_send(open[i]);
Delay_1ms(1);
}
Delay_1ms(10);
//---------將傳感器改為自動發(fā)送模式--------
for(i = 0; i < 9; i ++)
{
Serial_send(autodata[i]);
Delay_1ms(1);
}
Delay_1ms(10);
while(1)
{
Display_cal( );
DS1302_GetTime(&CurrentTime);
DateToStr(&CurrentTime);
TimeToStr(&CurrentTime);
d0=CurrentTime.DateString[0];
d1=CurrentTime.DateString[1];
d2=CurrentTime.DateString[3];
d3=CurrentTime.DateString[4];
d4=CurrentTime.DateString[6];
d5=CurrentTime.DateString[7];
t0=CurrentTime.TimeString[0];
t1=CurrentTime.TimeString[1];
t2=CurrentTime.TimeString[3];
t3=CurrentTime.TimeString[4];
t4=CurrentTime.TimeString[6];
t5=CurrentTime.TimeString[7];
R_data = 1;
/*------------------------------------------------
// 在接收一幀數(shù)據(jù)后，首先檢驗接收數(shù)據(jù)是否正確
// 若正確，將數(shù)據(jù)分解，然后顯示 */
if(complete_flag == 1)
{
//--------------計算校驗和-------------------
HR_crc = 0;
check = 0;
for(i = 0; i < 30; i ++)
{
HR_crc += USART_RX_BUF[i];
}
check = (((uint)USART_RX_BUF[30]) << 8) + USART_RX_BUF[31];
//---------------------------------------------
if((HR_crc == check)) //判斷接收的數(shù)據(jù)是否正確
{
//------------數(shù)據(jù)解析-------------------
PM10_data[0] = USART_RX_BUF[8];
PM10_data[1] = USART_RX_BUF[9];
PM25_data[0] = USART_RX_BUF[6];
PM25_data[1] = USART_RX_BUF[7];
shuju_jiexi( ); //將檢測數(shù)值由十六進(jìn)制轉(zhuǎn)成ASCII碼
}
complete_flag = 0;
}
if(display_num == 0)
{
LCD_Write_String(0, 0, "PM2.5:");
LCD_Write_Char(6, 0, PM_ASC[0] + '0');
LCD_Write_Char(7, 0, PM_ASC[1] + '0');
LCD_Write_Char(8, 0, PM_ASC[2] + '0');
LCD_Write_Char(9, 0, PM_ASC[3] + '0');
LCD_Write_String(10, 0, "ug/m3");
LCD_Write_String(0, 1, "PM10:");
LCD_Write_Char(5, 1, PM_ASC[4] + '0');
LCD_Write_Char(6, 1, PM_ASC[5] + '0');
LCD_Write_Char(7, 1, PM_ASC[6] + '0');
LCD_Write_Char(8, 1, PM_ASC[7] + '0');
LCD_Write_String(9, 1, "ug/m3");
}
else if(display_num == 1)
{
Set_Drive( );
LCD_Write_String(0, 0, "SET PM2.5:");
LCD_Write_String(5, 1, "PM10:");
LCD_Write_Char(11, 0, PM_data_buf[0] + '0');
LCD_Write_Char(12, 0, PM_data_buf[1] + '0');
LCD_Write_Char(13, 0, PM_data_buf[2] + '0');
LCD_Write_Char(14, 0, PM_data_buf[3] + '0');
LCD_Write_Char(10, 1, PM_data_buf[4] + '0');
LCD_Write_Char(11, 1, PM_data_buf[5] + '0');
LCD_Write_Char(12, 1, PM_data_buf[6] + '0');
LCD_Write_Char(13, 1, PM_data_buf[7] + '0');
}
else
{
LCD_Write_String(3, 0, "20");
LCD_Write_Char(5, 0, d0 + '0');
LCD_Write_Char(6, 0, d1 + '0');
LCD_Write_Char(7, 0, '-');
LCD_Write_Char(8, 0, d2 + '0');
LCD_Write_Char(9, 0, d3 + '0');
LCD_Write_Char(10, 0, '-');
LCD_Write_Char(11, 0, d4 + '0');
LCD_Write_Char(12, 0, d5 + '0');
LCD_Write_Char(4, 1, t0 + '0');
LCD_Write_Char(5, 1, t1 + '0');
LCD_Write_Char(6, 1, ':');
LCD_Write_Char(7, 1, t2 + '0');
LCD_Write_Char(8, 1, t3 + '0');
LCD_Write_Char(9, 1, ':');
LCD_Write_Char(10, 1, t4 + '0');
LCD_Write_Char(11, 1, t5 + '0');
}
if(mode_flag == 1)//光標(biāo)閃爍
{
switch(bit_select_counter)
{
case 0:
LCD_Write_Com(0x80 + 11);
LCD_Write_Com(0x0f);
break;
case 1:
LCD_Write_Com(0x80 + 12);
LCD_Write_Com(0x0f);
break;
case 2:
LCD_Write_Com(0x80 + 13);
LCD_Write_Com(0x0f);
break;
case 3:
LCD_Write_Com(0x80 + 14);
LCD_Write_Com(0x0f);
break;
case 4:
LCD_Write_Com(0xC0 + 10);
LCD_Write_Com(0x0f);
break;
case 5:
LCD_Write_Com(0xC0 + 11);
LCD_Write_Com(0x0f);
break;
case 6:
LCD_Write_Com(0xC0 + 12);
LCD_Write_Com(0x0f);
break;
case 7:
LCD_Write_Com(0xC0 + 13);
LCD_Write_Com(0x0f);
break;
}
}
if(mode_flag == 0)
{
LCD_Write_Com(0x0C); /*顯示開及光標(biāo)設(shè)置*/
PM25_2 = PM_data_buf[0] * 1000 + PM_data_buf[1] * 100 + PM_data_buf[2] * 10 + PM_data_buf[3];
PM10_2 = PM_data_buf[4] * 1000 + PM_data_buf[5] * 100 + PM_data_buf[6] * 10 + PM_data_buf[7];
if(PM25_1 >= PM25_2 || PM10_1 >= PM10_2)
{
P44 = 1;
KKK = 1;
}
else
{
P44 = 0;
KKK = 0;
}
if(KKK == 1)
{
if(PM25_1 >= PM25_2)
{
P24 = 0;
Delay_1ms(20);
P24 = 1;
Delay_1ms(20);
}
else
{
P24 = 1;
……………………
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