?? lcd_main.c
字號:
/*----------------------------------------------------------------
***LCD顯示溫控器*** 2004-8-12
參考資料：《溫度控制器V1.5》、《使用1602液晶顯示和PS/2鍵盤的示例》
本軟件僅供學習與參考，引用時請注明版權
本程序源碼只供學習參考，不得應用于商業用途，如有需要請聯系作者。
http://www.cdle.net
明浩 2004/1/2
pnzwzw@cdle.net
----------------------------------------------------------------*/
#include <REGX51.H>
#include <string.h>
#include <intrins.h>
#define LCM_RW P2_0 //定義引腳
#define LCM_RS P2_1
#define LCM_E P2_2
#define LCM_Data P1
#define Busy 0x80 //用于檢測LCM狀態字中的Busy標識
#define Key_UP P2_3 //上調溫度
#define Key_DOWN P2_5 //下調溫度
#define Key_SET P2_4 //設定鍵（溫度設定，長按開電源）
#define RelayOutPort P2_6 //繼電器輸出
#define TMPort P2_7 //DS1820 DataPort
unsigned char code LCDDis[]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x20,0x2d}; //0-9的ASCII碼,0x20為空,0x2d為負號
unsigned char i;
static unsigned char bdata StateREG; //可位尋址的狀態寄存器
sbit DS1820ON = StateREG^0; //DS1820是否存在
sbit SetTF = StateREG^1; //是否是在溫度設置狀態
sbit KeySETDown = StateREG^2; //是否已按過SET鍵標識
sbit PowTF = StateREG^3; //電源標識
sbit KeyTF = StateREG^4; //鍵盤是否允許
//sbit KeySETDowning = StateREG^5; //SET是否正在按下
static unsigned char bdata TLV _at_ 0x0029; //溫度變量高低位
static unsigned char bdata THV _at_ 0x0028;
static signed char TMV; //轉換后的溫度值
static unsigned char KeyV,TempKeyV; //鍵值
static signed char TMRomV _at_ 0x0027; //高溫限制
static signed char TMSetV _at_ 0x0026; //溫度設定值
static unsigned char KSDNum; //SET鍵連按時的采集次數
static unsigned char IntNum,IntNum2,IntNum3; //中斷發生次數，IntNum用于SET長按檢測，IntNum2用于設定狀態時LCD閃爍
static signed char LCD_One,LCD_Two,LCD_Three; //LCD的顯示位 LCD_One為十位，LCD_Two為個位
static signed char LCD_One_set,LCD_Two_set,LCD_Three_set; //設置時的LCD值
static unsigned char Sign, Sign_Set; //負號標識
void WriteDataLCM(unsigned char WDLCM);
void WriteCommandLCM(unsigned char WCLCM,BuysC);
unsigned char ReadDataLCM(void);
unsigned char ReadStatusLCM(void);
void LCMInit(void);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char code *DData);
void Delay5Ms(void);
void Delay400Ms(void);
unsigned char code cdle_net[] = {" WellCome! "};
unsigned char code email[] = {" Press Power Key"};
unsigned char cur_temper[]={"Current Temp: "};
unsigned char cur_temper_set[]={"T_Set: "};
unsigned char BF = 0; //定時中斷標志，=1時顯示當前溫度值，=0顯示歡迎
void main(void)
{
void InitDS1820(void); //定義函數
void ROMDS1820(void);
void TMVDS1820(void);
void TMRDS1820(void);
void TMWDS1820(void);
void TMREDS1820(void);
void TMERDS1820(void);
void ReadDS1820(void);
void WriteDS1820(void);
void Delay_510(void);
void Delay_110(void);
void Delay_10ms(void);
void Delay_4s(void);
void V2ToV(void);
StateREG = 0; //初始化變量
//SetTF = 1;
PowTF = 1; //關電源
//KeyTF = 1;
THV = 0;
TLV = 0;
TMV = 0;
KeyV = 0;
TempKeyV = 0;
KSDNum = 0;
IntNum = 0;
IntNum2 = 0;
IntNum3 = 0;
InitDS1820(); //初始化
ROMDS1820(); //跳過ROM
TMERDS1820(); //E2PRAM中溫度上限值調入RAM
InitDS1820(); //初始化
ROMDS1820(); //跳過ROM
TMRDS1820(); //讀出溫度指令
ReadDS1820(); //讀出溫度值和上限值
TMSetV = TMRomV; //拷貝保存在DS18B20ROM里的上限值到TMSetV
Delay400Ms(); //啟動等待，等LCM講入工作狀態
LCMInit(); //LCM初始化
Delay5Ms(); //延時片刻(可不要)
EA = 1; //允許CPU中斷
ET0 = 1; //定時器0中斷打開
TMOD = 0x1; //設定時器0為模式1，16位模式
TH0=0xB1;
TL0=0xDF; //設定時值為20000us（20ms）
TR0 = 1; //開始定時
do
{
if (BF==0)
{
DisplayListChar(0, 0, cdle_net); //顯示歡迎信息
DisplayListChar(0, 1, email);
Delay_4s();
//PowTF = 1;
EA=1;
}
if (BF==1)
{
for (i=0;i<16;i++)
{
DisplayOneChar(i,0,cur_temper[i]);//LCD的第1行顯示當前溫度
}
for (i=0;i<16;i++)
{
DisplayOneChar(i,1,cur_temper_set[i]);//LCD的第二行顯示設置溫度和繼電器狀態
}
//ReadDataLCM();//測試用句無意義
EA=1;
}
}
while(1);
}
//定時器0中斷外理中鍵掃描和處理要顯示的值
void KeyAndDis_Time0(void) interrupt 1 using 2
{
TH0=0xB1;
TL0=0xDF; //設定時值為20000us（20ms)
if (!Key_UP) KeyV = 1;
if (!Key_DOWN) KeyV = 2;
if (!Key_SET) KeyV = 3;
//KeySETDowning = 0; //清除
if (KeyV != 0) //有鍵按下
{
Delay_10ms(); //延時防抖 按下10ms再測
if (!Key_UP) TempKeyV = 1;
if (!Key_DOWN) TempKeyV = 2;
if (!Key_SET) TempKeyV = 3;
if (KeyV == TempKeyV) //兩次值相等為確定接下了鍵
{
if (KeyV == 3) //按下SET鍵，如在SET狀態就退出，否則進入
{
//KeySETDowning = 1; //表明SET正在按下
PowTF = 0; //電源標識開
if (!KeyTF) //KeyTF=0,鍵盤允許
if (SetTF)
{
SetTF = 0; //標識位標識退出設定
InitDS1820(); //初始化
ROMDS1820(); //跳過ROM
TMWDS1820(); //寫溫度上限指令
WriteDS1820(); //寫溫度上限到DS18B20ROM
WriteDS1820(); //寫溫度上限到DS18B20ROM
WriteDS1820(); //寫溫度上限到DS18B20ROM
InitDS1820(); //初始化
ROMDS1820(); //跳過ROM
TMREDS1820(); //溫度上限值COPY回E2PRAM
// V2ToV();
}
else
SetTF = 1;
if (!KeySETDown) //沒有第一次按下SET時，KeySETDown標識置1
KeySETDown = 1;
else
KSDNum = KSDNum + 1; //前一秒內有按過SET則開始計數
}
if (SetTF==1) //在SET狀態下
{
cur_temper_set[9]=0x3d; //"=" 顯示set標志
cur_temper_set[10]=0x73; //"s"
cur_temper_set[11]=0x65; //"e"
cur_temper_set[12]=0x74; //"t"
if ((KeyV == 1) && (!KeyTF))
TMSetV = TMSetV + 1; //上調溫度
if ((KeyV == 2) && (!KeyTF))
TMSetV = TMSetV - 1; //下調溫度
if (TMSetV <= -55) //限制溫度上下限
TMSetV = -55;
if (TMSetV >= 125)
TMSetV = 125;
}
if ((!KeyTF) && (IntNum3 == 0))
{
KeyTF = 1; //當鍵盤處于可用時，鎖定
cur_temper_set[9]=0x20; // 顯示空白
cur_temper_set[10]=0x20;
cur_temper_set[11]=0x20;
cur_temper_set[12]=0x20;
}
}
if (KeySETDown) //在2秒內按下了SET則計中斷發生次數用于長按SET時計時用
IntNum = IntNum + 1;
if (IntNum > 55) //中斷發生了55次時（大約1.2秒）75為1.5秒左右
{
IntNum = 0;
KeySETDown = 0;
if (KSDNum == 55) //如一直長按了SET1.2秒左右
{
RelayOutPort = 1; //關閉繼電器輸出
PowTF = 1; //電源標識關
//Delay_4s(); //延時
IntNum = 0;
IntNum2 = 0;
IntNum3 = 0;
BF = 0; //顯示歡迎信息
EA=0;
}
KSDNum = 0;
}
}
KeyV = 0;
TempKeyV = 0; //清空變量準備下次鍵掃描
if (PowTF==0)
{
InitDS1820(); //初始化
ROMDS1820(); //跳過ROM
TMVDS1820(); //溫度轉換指令
Delay_510();
Delay_510(); //延時等待轉換完成
InitDS1820(); //初始化
ROMDS1820(); //跳過ROM
TMRDS1820(); //讀出溫度指令
ReadDS1820(); //讀出溫度值
V2ToV(); //轉換顯示值
if (TMV > TMSetV) //根據采集到的溫度值控制繼電器
{
RelayOutPort = 0;
cur_temper_set[13]=0x20; //" "
cur_temper_set[14]=0x4f; //"O"
cur_temper_set[15]=0x4e; //"N"
}
else
{
RelayOutPort = 1;
cur_temper_set[13]=0x4f; //"O"
cur_temper_set[14]=0x46; //"F"
cur_temper_set[15]=0x46; //"F"
}
if (SetTF) IntNum2 = IntNum2 + 1; //用于閃爍計數
if (IntNum2 > 50 ) IntNum2 = 0;
if (KeyTF) IntNum3 = IntNum3 + 1; //用于防止按鍵連按
if (IntNum3 > 25)
{
IntNum3 = 0;
KeyTF = 0;
}
if ((SetTF) && (IntNum2 < 25)) goto InitEnd; //計數在后半段時顯示
BF=1; //讓顯示溫度值
EA=0; //關中斷
}
InitEnd:;
}
void V2ToV(void) //數值轉換
{
TLV = TLV >> 4;
THV = THV << 4; //讀出的高低位數值移位
TMV = TLV | THV; //合并高低位放入TM為實際溫度值
Sign = 0; Sign_Set=0;
Sign_Set = TMSetV >> 7; //取符號
Sign = TMV >> 7;
if (Sign)
{
LCD_One = (~TMV) / 100; //轉換百位值
LCD_Two = ((~TMV) - LCD_One * 100)/10;
LCD_Three = (~TMV) - LCD_One * 100 - LCD_Two * 10;
}
else
{
LCD_One = (TMV) / 100; //轉換百位值
LCD_Two = (TMV - LCD_One * 100)/10;
LCD_Three = TMV - LCD_One * 100 - LCD_Two * 10;
}
if (Sign_Set)
{
LCD_One_set = (~(TMSetV-1)) / 100; //SET狀態下顯示設定值
LCD_Two_set = ((~(TMSetV-1)) - LCD_One_set * 100)/10;
LCD_Three_set = (~(TMSetV-1)) - LCD_One_set * 100 - LCD_Two_set * 10;
}
else
{
LCD_One_set = (TMSetV) / 100; //SET狀態下顯示設定值
LCD_Two_set = (TMSetV - LCD_One_set * 100)/10;
LCD_Three_set = TMSetV - LCD_One_set * 100 - LCD_Two_set * 10;
}
//轉LCD字段 溫度值
if (LCD_One) //超過百時十位的處理
LCD_Two = LCDDis[LCD_Two];
else
{
if (LCD_Two == 0)
LCD_Two = LCDDis[10];
else
LCD_Two = LCDDis[LCD_Two];
}
if (Sign)
LCD_One = LCDDis[11];
else
{
if (LCD_One == 0)
LCD_One = LCDDis[10];
else
LCD_One = LCDDis[LCD_One];
}
LCD_Three = LCDDis[LCD_Three];
cur_temper[13]=LCD_One; //把溫度值的ASCII碼放入cur_temper的13，14，15位
cur_temper[14]=LCD_Two;
cur_temper[15]=LCD_Three;
//轉LCD字段 設置值
if (LCD_One_set) //超過百時十位的處理
LCD_Two_set = LCDDis[LCD_Two_set];
else
{
if (LCD_Two_set == 0)
LCD_Two_set = LCDDis[10];
else
LCD_Two_set = LCDDis[LCD_Two_set];
}
if (Sign_Set)
LCD_One_set = LCDDis[11];
else
{
if (LCD_One_set == 0)
LCD_One_set = LCDDis[10];
else
LCD_One_set = LCDDis[LCD_One_set];
}
LCD_Three_set = LCDDis[LCD_Three_set];
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