12位AD DS1621與12864液晶的單片機(jī)程序概述
DS1621與lcd12864和單片機(jī)接口的仿真原理圖
//EDM12864B DRIVE//
/**************************************
PAGEADD為頁地址起使
TIERADD為行地址起使
DIS_STARTADD為開始命令
CTABLE為漢字字庫數(shù)組
ETABLE為英文字庫數(shù)組
***************************************/
#include
#define uchar unsigned char
#define uint unsigned int
#define High 1
#define Low 0
#define _nop {}
#define PAGEADD 0xb8
#define TIERADD 0x40
#define DIS_STARADD 0xc0
uint key_value;
sbit DI=P1^4;
sbit E=P1^2;
sbit CS1=P1^1;
sbit CS2=P1^0;
sbit RW=P1^3;
sbit cs=P1^7;
sbit sclk=P1^6;
sbit dout=P1^5;
sbit I2C_SCL = P3^7;
sbit I2C_SDA = P3^6;
//uchar ntable[]={61,49,57,60,19,49,62,49,60,63,55,2,0,0,6,22,56,
//63,68,61,49,57,60,17,51,63,61};//email:analog2006@hotmail.com
uchar data voltage_display[8];
/*****************************
字符表
顯示"Welcome Use"
******************************/
uchar code table1[]={
0x00,0x3e,0x51,0x49,0x45,0x3e,0x00,0x00,//0(0)
0x00,0x00,0x42,0x7f,0x40,0x00,0x00,0x00,//1
0x00,0x42,0x61,0x51,0x49,0x46,0x00,0x00,//2
0x00,0x21,0x41,0x45,0x4b,0x31,0x00,0x00,//3
0x00,0x18,0x14,0x12,0x7f,0x10,0x00,0x00,//4
0x00,0x27,0x45,0x45,0x45,0x39,0x00,0x00,//5
0x00,0x3c,0x4a,0x49,0x49,0x30,0x00,0x00,//6
0x00,0x01,0x01,0x79,0x05,0x03,0x00,0x00,//7
0x00,0x36,0x49,0x49,0x49,0x36,0x00,0x00,//8
0x00,0x06,0x49,0x49,0x29,0x1e,0x00,0x00,//9
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,// (10)
0x00,0x00,0x00,0x47,0x00,0x00,0x00,0x00,//!
0x00,0x23,0x13,0x08,0x64,0x62,0x00,0x00,//%
0x00,0x36,0x49,0x55,0x22,0x50,0x00,0x00,//&
0x00,0x14,0x08,0x3e,0x08,0x14,0x00,0x00,//*
0x00,0x08,0x08,0x3e,0x08,0x08,0x00,0x00,//+
0x00,0x08,0x08,0x08,0x08,0x08,0x00,0x00,//-
0x00,0x00,0x60,0x60,0x00,0x00,0x00,0x00,//.
0x00,0x20,0x10,0x08,0x04,0x02,0x00,0x00,///
0x00,0x00,0x36,0x36,0x00,0x00,0x00,0x00,//:(19)
0x00,0x14,0x14,0x14,0x14,0x14,0x00,0x00,//=
0x00,0x02,0x01,0x51,0x09,0x06,0x00,0x00,//?
0x00,0x32,0x49,0x79,0x41,0x3E,0x00,0x00,//@(22)
0x00,0x7e,0x11,0x11,0x11,0x7f,0x00,0x00,//A
0x00,0x41,0x7f,0x49,0x49,0x36,0x00,0x00,//B
0x00,0x3e,0x41,0x41,0x41,0x22,0x00,0x00,//C
0x00,0x41,0x7f,0x41,0x41,0x3e,0x00,0x00,//D
0x00,0x7f,0x49,0x49,0x49,0x49,0x00,0x00,//E
0x00,0x7f,0x09,0x09,0x09,0x01,0x00,0x00,//F
0x00,0x3e,0x41,0x41,0x49,0x7a,0x00,0x00,//G(29)
0x00,0x7f,0x08,0x08,0x08,0x7f,0x00,0x00,//H
0x00,0x00,0x41,0x7f,0x41,0x00,0x00,0x00,//I
0x20,0x40,0x41,0x3f,0x01,0x01,0x00,0x00,//J
0x00,0x7f,0x08,0x14,0x22,0x41,0x00,0x00,//K
0x00,0x7f,0x40,0x40,0x40,0x40,0x00,0x00,//L
0x00,0x7f,0x02,0x0c,0x02,0x7f,0x00,0x00,//M
0x00,0x7f,0x06,0x08,0x30,0x7f,0x00,0x00,//N
0x00,0x3e,0x41,0x41,0x41,0x3e,0x00,0x00,//O
0x00,0x7f,0x09,0x09,0x09,0x06,0x00,0x00,//P
0x00,0x3e,0x41,0x51,0x21,0x5e,0x00,0x00,//Q(39)
0x00,0x7f,0x09,0x19,0x29,0x46,0x00,0x00,//R
0x00,0x26,0x49,0x49,0x49,0x32,0x00,0x00,//S
0x00,0x01,0x01,0x7f,0x01,0x01,0x00,0x00,//T
0x00,0x3f,0x40,0x40,0x40,0x3f,0x00,0x00,//U
0x00,0x1f,0x20,0x41,0x20,0x1f,0x00,0x00,//V
0x00,0x7f,0x20,0x80,0x20,0x7f,0x00,0x00,//W
0x00,0x63,0x14,0x08,0x14,0x63,0x00,0x00,//X
0x00,0x07,0x08,0x70,0x08,0x07,0x00,0x00,//Y
0x00,0x61,0x51,0x49,0x45,0x43,0x00,0x00,//Z
0x00,0x20,0x54,0x54,0x54,0x78,0x00,0x00,//a(49)
0x00,0x20,0x54,0x54,0x54,0x78,0x00,0x00,//b
0x00,0x38,0x44,0x44,0x44,0x28,0x00,0x00,//c
0x00,0x38,0x44,0x44,0x48,0x7f,0x00,0x00,//d
0x00,0x38,0x54,0x54,0x54,0x18,0x00,0x00,//e
0x00,0x00,0x08,0x7e,0x09,0x02,0x00,0x00,//f
0x00,0x0c,0x52,0x52,0x4c,0x3e,0x00,0x00,//g
0x00,0x7f,0x08,0x04,0x04,0x78,0x00,0x00,//h
0x00,0x00,0x44,0x7d,0x40,0x00,0x00,0x00,//i
0x00,0x20,0x40,0x44,0x3d,0x00,0x00,0x00,//j
0x00,0x00,0x7f,0x10,0x28,0x44,0x00,0x00,//k(59)
0x00,0x00,0x41,0x7f,0x40,0x00,0x00,0x00,//l
0x00,0x7c,0x04,0x78,0x04,0x78,0x00,0x00,//m
0x00,0x7c,0x08,0x04,0x04,0x78,0x00,0x00,//n
0x00,0x38,0x44,0x44,0x44,0x38,0x00,0x00,//o
0x00,0x7e,0x0c,0x12,0x12,0x0c,0x00,0x00,//p
0x00,0x0c,0x12,0x12,0x0c,0x7e,0x00,0x00,//q
0x00,0x7C,0x08,0x04,0x04,0x08,0x00,0x00,//r
0x00,0x58,0x54,0x54,0x54,0x64,0x00,0x00,//s
0x00,0x04,0x3f,0x44,0x40,0x20,0x00,0x00,//t
0x00,0x3c,0x40,0x40,0x3c,0x40,0x00,0x00,//u(69)
0x00,0x1c,0x20,0x40,0x20,0x1c,0x00,0x00,//v
0x00,0x3c,0x40,0x30,0x40,0x3c,0x00,0x00,//w
0x00,0x44,0x28,0x10,0x28,0x44,0x00,0x00,//x
0x00,0x1c,0xa0,0xa0,0x90,0x7c,0x00,0x00,//y
0x00,0x44,0x64,0x54,0x4c,0x44,0x00,0x00,//z(74)
};
/****************************
中文字符表
顯示"歡迎使用液晶模塊"
*****************************/
uchar code table2[]={
0x14,0x24,0x44,0x84,0x64,0x1c,0x20,0x18,
0x0f,0xe8,0x08,0x08,0x28,0x18,0x08,0x00,
0x20,0x10,0x4c,0x43,0x43,0x2c,0x20,0x10,
0x0c,0x03,0x06,0x18,0x30,0x60,0x20,0x00,//歡(0)
0x40,0x41,0xce,0x04,0x00,0xfc,0x04,0x02,
0x02,0xfc,0x04,0x04,0x04,0xfc,0x00,0x00,
0x40,0x20,0x1f,0x20,0x40,0x47,0x42,0x41,
0x40,0x5f,0x40,0x42,0x44,0x43,0x40,0x00,//迎(1)
0x40,0x20,0xf0,0x1c,0x07,0xf2,0x94,0x94,
0x94,0xff,0x94,0x94,0x94,0xf4,0x04,0x00,
0x00,0x00,0x7f,0x00,0x40,0x41,0x22,0x14,
0x0c,0x13,0x10,0x30,0x20,0x61,0x20,0x00,//使(2)
0x00,0x00,0x00,0xfe,0x22,0x22,0x22,0x22,
0xfe,0x22,0x22,0x22,0x22,0xfe,0x00,0x00,
0x80,0x40,0x30,0x0f,0x02,0x02,0x02,0x02,
0xff,0x02,0x02,0x42,0x82,0x7f,0x00,0x00,//用(3)
0x10,0x61,0x06,0xe0,0x18,0x84,0xe4,0x1c,
0x84,0x65,0xbe,0x24,0xa4,0x64,0x04,0x00,
0x04,0x04,0xff,0x00,0x01,0x00,0xff,0x41,
0x21,0x12,0x0c,0x1b,0x61,0xc0,0x40,0x00,//液(4)
0x00,0x00,0x00,0x00,0x7e,0x2a,0x2a,0x2a,
0x2a,0x2a,0x2a,0x7e,0x00,0x00,0x00,0x00,
0x00,0x7f,0x25,0x25,0x25,0x25,0x7f,0x00,
0x00,0x7f,0x25,0x25,0x25,0x25,0x7f,0x00,//晶(5)
0x10,0xd0,0xff,0x50,0x90,0x04,0xf4,0x54,
0x5f,0x54,0x54,0x5f,0xf4,0x04,0x00,0x00,
0x03,0x00,0xff,0x00,0x00,0x84,0x85,0x45,
0x35,0x0f,0x15,0x25,0x65,0xc4,0x44,0x00,//模(6)
0x10,0x10,0xff,0x10,0x10,0x00,0x08,0x08,
0xff,0x08,0x08,0x08,0xf8,0x00,0x00,0x00,
0x08,0x18,0x0f,0x04,0x85,0x41,0x31,0x0d,
0x03,0x05,0x09,0x11,0x31,0x61,0x21,0x00,//塊(7)
0x00,0x00,0xF8,0x48,0x48,0x48,0x48,0xFF,
0x48,0x48,0x48,0x48,0xF8,0x00,0x00,0x00,
0x00,0x00,0x0F,0x04,0x04,0x04,0x04,0x3F,
0x44,0x44,0x44,0x44,0x4F,0x40,0x70,0x00,//電(8)
0x00,0x00,0xFE,0x02,0x42,0x42,0x42,0x42,
0xFA,0x42,0x42,0x42,0x62,0x42,0x02,0x00,
0x20,0x18,0x27,0x20,0x20,0x20,0x20,0x20,
0x3F,0x20,0x21,0x2E,0x24,0x20,0x20,0x00,//壓(9)
0x10,0x21,0x86,0x70,0x00,0x7E,0x4A,0x4A,
0x4A,0x4A,0x4A,0x7E,0x00,0x00,0x00,0x00,
0x02,0xFE,0x01,0x40,0x7F,0x41,0x41,0x7F,
0x41,0x41,0x7F,0x41,0x41,0x7F,0x40,0x00,//溫(10)
0x00,0x00,0xFC,0x04,0x24,0x24,0xFC,0xA5,
0xA6,0xA4,0xFC,0x24,0x24,0x24,0x04,0x00,
0x80,0x60,0x1F,0x80,0x80,0x42,0x46,0x2A,
0x12,0x12,0x2A,0x26,0x42,0xC0,0x40,0x00,//度(11)
0x08,0x31,0x86,0x60,0x00,0xFE,0x02,0xF2,
0x02,0xFE,0x00,0xF8,0x00,0x00,0xFF,0x00,
0x04,0xFC,0x03,0x00,0x80,0x47,0x30,0x0F,
0x10,0x67,0x00,0x07,0x40,0x80,0x7F,0x00,//測(12)
0x40,0x40,0x40,0xDF,0x55,0x55,0x55,0xD5,
0x55,0x55,0x55,0xDF,0x40,0x40,0x40,0x00,
0x40,0x40,0x40,0x57,0x55,0x55,0x55,0x7F,
0x55,0x55,0x55,0x57,0x50,0x40,0x40,0x00,//量(13)
};
/********************************
顯示用的延時函數(shù)
延時長度有參數(shù) n 決定
*********************************/
Delay_nms(uchar n)
{ uchar a;
for(;n>0;n--)
{
for(a=0;a<100;a++)
{
_nop;
_nop;
_nop;
_nop;
};
};
}
/*****************************************
DEM12864B狀態(tài)檢測,從EDM12864B讀出數(shù)
據(jù)檢測標(biāo)志位BF
******************************************/
void LCD_Busy()
{
uchar busy;
E=Low;
DI=Low;
RW=High;
while(1)
{
E=High;
_nop;
_nop;
busy=P2;//讀狀態(tài)標(biāo)志寄存器
_nop;
E=Low;
if((busy&0x90)==0)//檢測BF和RES位,兩者都為零時表示可進(jìn)行寫入
break;
};
}
/*********************************
寫指令
**********************************/
void WRCommand_L(uchar command)
{
CS1=High;
CS2=Low;
LCD_Busy();
DI=Low;
_nop;
RW=Low;
_nop;
E=High;
_nop;
P2=command;
_nop;
E=Low;
_nop;
}
void WRCommand_R(uchar command)
{
CS1=Low;
CS2=High;
LCD_Busy();
DI=Low;
_nop;
RW=Low;
_nop;
E=High;
_nop;
P2=command;
_nop;
E=Low;
_nop;
}
/***********************************
寫一個字節(jié)的顯示數(shù)據(jù)
************************************/
void WRdata_L(uchar ucdata)
{
CS1=High;
CS2=Low;
LCD_Busy();
DI=High;
_nop;
RW=Low;
_nop;
E=High;
_nop;
P2=ucdata;
_nop;
E=Low;
_nop;
}
void WRdata_R(uchar ucdata)
{
CS1=Low;
CS2=High;
LCD_Busy();
DI=High;
_nop;
RW=Low;
_nop;
E=High;
_nop;
P2=ucdata;
_nop;
E=Low;
_nop;
}
/************************************
讀顯示數(shù)據(jù)
*************************************/
/********************************************
RDdata_L()
{
uchar receiver;
CS1=High;
CS2=Low;
LCD_Busy();
DI=High;
_nop;
WR=High;
_nop;
E=High;
_nop;
receiver=P0;
E=Low;
return(receiver);
}
RDdata_R()
{
uchar receiver;
CS1=Low;
CS2=High;
LCD_Busy();
DI=High;
_nop;
WR=High;
_nop;
E=High;
_nop;
receiver=P0;
E=Low;
return(receiver);
}
/*****************************************
/**************************************
I2C時鐘時序要求的數(shù)據(jù)建立時間,
nop_可以用其它短延時替代,比如喂狗
***************************************/
I2C_delay()
{
uchar n=5;
while(n--)
{
_nop;
_nop;
}
}
/*********************************************
I2C的時鐘信號可發(fā)送和接收.
接收時通過判斷sample對寄存器的值加.
發(fā)送的時候只調(diào)用程序產(chǎn)生時序.
**********************************************/
bit I2C_clock(void)
{
bit sample;
I2C_delay();
I2C_SCL=High;
I2C_delay();
sample=I2C_SDA;
I2C_SCL=Low;
I2C_delay();
return(sample);
}
/********************************************
I2C確定接收有效的應(yīng)答信號Acknowledge
*********************************************/
I2C_ACK()
{
I2C_SDA=Low;
I2C_clock();
I2C_SDA=High;
}
/*****************************************
I2C的非應(yīng)答信號
******************************************/
I2C_NACK()
{
I2C_SDA=High;
I2C_clock();
I2C_SDA=High;
}
/*************************************************
I2C的開始信號.發(fā)送和接受數(shù)據(jù)時,必須先調(diào)用.
*************************************************/
I2C_start()
{
I2C_SDA=High;
I2C_delay();
I2C_SCL=High;
I2C_delay();
I2C_SDA=Low;
I2C_delay();
I2C_SCL=Low;
I2C_delay();
}
/***************************************************
I2C停止信號.發(fā)送和接受數(shù)據(jù)時結(jié)束時,需要調(diào)用.
****************************************************/
I2C_stop()
{
I2C_SDA=Low;
I2C_delay();
I2C_SCL=High;
I2C_delay();
I2C_SDA=High;//產(chǎn)生停止控制信號,并且釋放數(shù)據(jù)線
I2C_delay();
}
/*****************************************
I2C初始化.在main函數(shù)中必須先調(diào)用它.
進(jìn)行初始化后才能調(diào)用其他函數(shù).
******************************************/
void I2C_init(void)
{
I2C_SDA=High;
I2C_SCL=High;
I2C_delay();
I2C_stop();
}
/*****************************************
I2C總線寫一個字節(jié),即發(fā)送一個字節(jié)
發(fā)送結(jié)束后,需要返回一個檢測應(yīng)答位
******************************************/
bit I2C_send(uchar I2C_data)
{
uchar a;
for(a=0;a<8;a++)
{
I2C_SDA=(bit)(I2C_data&0x80);
I2C_data=I2C_data<<1;
I2C_clock();
};
I2C_SDA=High;
I2C_delay();
return(I2C_clock()); //返回應(yīng)答信號
}
/***********************************************
I2C總線讀一個字節(jié),即接收一個字節(jié)數(shù)據(jù)
接收結(jié)束后需要發(fā)送一個應(yīng)答位acknowledge
***********************************************/
uchar I2C_receive()
{
uchar a,receive_data;
for(a=0;a<8;a++)
{
receive_data=receive_data<<1;
if(I2C_clock())
{
receive_data++;
};
};
//I2C_ACK();
return(receive_data);
}
DS1621_start()
{
do
{
I2C_start();
}
while(I2C_send(0x90));//發(fā)送數(shù)據(jù)完地址字節(jié)的數(shù)據(jù)時,檢測從機(jī)的應(yīng)答位
if(I2C_send(0xee)==0)
{
I2C_stop();
return 1;
}
else
return 0;
}
DS1621_stop()
{
do
{
I2C_start();
//I2C_send(0x90);
}
while(I2C_send(0x90));
if(I2C_send(0x22)==0)
{
I2C_stop();
return 1;
}
else
return 0;
}
char read_count_remain()
{
char temp_remain=0;
do
{
I2C_start();
}
while(I2C_send(0x90));//是否應(yīng)答
if(I2C_send(0xa8)==0)
{
I2C_start();
if(I2C_send(0x91)==0)
{
temp_remain=I2C_receive();
I2C_NACK();
I2C_stop();
return temp_remain;
}
else
return 0;
}
else
return 0;
}
char read_count_c()
{
char temp_c=0;
do
{
I2C_start();
}
while(I2C_send(0x90));//是否應(yīng)答
if(I2C_send(0xa9)==0)
{
I2C_start();
if(I2C_send(0x91)==0)
{
temp_c=I2C_receive();
I2C_NACK();
I2C_stop();
return temp_c;
}
else
return 0;
}
else
return 0;
}
bit read_temperature(char *point1)
{
do
{
I2C_start();
}
while(I2C_send(0x90));
if(I2C_send(0xaa)==0)
{
do{
I2C_start();
}
while(I2C_send(0x91));
(*point1)=I2C_receive();
I2C_ACK();
(*(point1+1))=I2C_receive();
I2C_NACK();
I2C_stop();
return 1;
}
else
return 0;
}
DS1621_state()
{
do
{
I2C_start();
}
while(I2C_send(0x90));
if(I2C_send(0xac)==0)
{
do
{
I2C_start();
}
while(I2C_send(0x90));
if(I2C_send(0x00)==0)
//if(I2C_send(0x01)==0)
{
I2C_stop();
return 1;
}
else
return 0;
}
else
return 0;
}
DS1621_th()
{
}
DS1621_tl()
{
}
DS1621_init()
{
while(DS1621_stop()==0)
{};
while(DS1621_state()==0)
{};
DS1621_th();
DS1621_tl();
}
/****************************************************
字符為16*16顯示,分為兩個部分寫入32個字節(jié)
前16個字節(jié)寫入第一頁(16*8),后16個字節(jié)寫入
第二頁(16*8)
左側(cè)寫入"歡迎",右側(cè)寫入"使用"
*****************************************************/
C_display_L(uchar C_Pagenum,uchar C_Tiernum,uchar C_Temp)
{
uchar k;
C_Pagenum=PAGEADD|C_Pagenum;
C_Tiernum=TIERADD|C_Tiernum;
WRCommand_L(C_Pagenum);
WRCommand_L(C_Tiernum);
for(k=0;k<16;k++)
{
WRdata_L(table2[C_Temp*32+k]);
};
C_Pagenum=C_Pagenum+1;
WRCommand_L(C_Pagenum);
WRCommand_L(C_Tiernum);
for(k=0;k<16;k++)
{
WRdata_L(table2[C_Temp*32+k+16]);
};
}
C_display_R(uchar C_Pagenum,uchar C_Tiernum,uchar C_Temp)
{
uchar k;
C_Pagenum=PAGEADD|C_Pagenum;
C_Tiernum=TIERADD|C_Tiernum;
WRCommand_R(C_Pagenum);
WRCommand_R(C_Tiernum);
for(k=0;k<16;k++)
{
WRdata_R(table2[C_Temp*32+k]);
};
C_Pagenum=C_Pagenum+1;
WRCommand_R(C_Pagenum);
WRCommand_R(C_Tiernum);
for(k=0;k<16;k++)
{
WRdata_R(table2[C_Temp*32+k+16]);
};
}
/****************************************
寫入西文字符,共11個字符,左側(cè)寫入6個
右側(cè)寫入5個,左側(cè)起始從16開始,右側(cè)從
0開始
*****************************************/
E_Display_L(uchar E_Pagenum,uchar E_Tiernum,uchar E_Temp)
{
uchar k;
WRCommand_L(PAGEADD|E_Pagenum);
WRCommand_L(TIERADD|E_Tiernum);
for(k=0;k<8;k++)
{
WRdata_L(table1[E_Temp*8+k]);
};
}
E_Display_R(uchar E_Pagenum,uchar E_Tiernum,uchar E_Temp)
{
uchar k;
WRCommand_R(PAGEADD|E_Pagenum);
WRCommand_R(TIERADD|E_Tiernum);
for(k=0;k<8;k++)
{
WRdata_R(table1[E_Temp*8+k]);
};
}
/*********************************
清除所有顯示RAM內(nèi)容
**********************************/
CLR_DisplayRAM()
{
uchar C_page,i,k;
for(i=0;i<8;i++)
{
C_page=PAGEADD|i;//清除起始頁為0
WRCommand_L(C_page);//清除起始頁寫入
WRCommand_L(TIERADD);//清除起始行地址寫入
WRCommand_R(C_page);
WRCommand_R(TIERADD);
for(k=0;k<64;k++)
{
WRdata_L(0x00);
WRdata_R(0x00);//lcm的ram自動加一,只許循環(huán)64次即可
};
};
}
/*********************************
初始化 設(shè)置啟使行
**********************************/
void Init_LCD(void)
{
CLR_DisplayRAM();//清除所有顯示寄存器
WRCommand_L(DIS_STARADD);
WRCommand_R(DIS_STARADD);//設(shè)置顯示起始行地址
WRCommand_L(0x3f);
WRCommand_R(0x3f);//開顯示
}
/***************************************
max1241讀轉(zhuǎn)換結(jié)果
****************************************/
uint read_max1241()
{
uint voltage_temp=0;
uchar ucloop=12;
cs=High;
//dout=low;
sclk=Low;
cs=Low;
while(dout==0);//EOC信號為高表示轉(zhuǎn)換結(jié)束
sclk=High;
sclk=Low;
while(ucloop--)
{
sclk=High;//上升沿數(shù)據(jù)穩(wěn)定并讀出
voltage_temp<<=1;
if(dout==1)
voltage_temp+=1;
sclk=Low;
};
//sclk=low;
cs=High;
return voltage_temp;
}
main()
{
uchar a=0,temp=0,b=0,number=0,pagenum=0;
uchar etable[]={0,0,0,0,0,45,53,60,51,63,61,53,10,69,67,53};//Welcome use
uchar ttable[]={42,57,61,53,19,10,2,0,0,6,18,1,1,18,0,7};//Time:2006/11/07
char count_remain=0,count_c=0;
bit flag=1;
char temperature_buf[2]={0};
uchar temperature_display[8]={0};
//uchar voltage=0; //測試0831時使用
double voltage=0;
double temp_buffer=0;
cs=High;
sclk=High;
Init_LCD();
I2C_init();
DS1621_init();//初始化
DS1621_start();//開始溫度采集
/***************************************
利用開機(jī)顯示時間(大概三秒)空讀一次DS1621
***************************************/
for(b=0;b<2;b++)
{
for(number=0;number<20;number++)
{
//中文顯示:歡迎使用液晶模塊
pagenum=1;//在第二行開始顯示
for(a=0;a<4;a++)
{
C_display_L(pagenum,a*16,a);
C_display_R(pagenum,a*16,a+4);
};
//英文顯示:Welcome use
pagenum=5;//在第六行顯示
for(a=0;a<3;a++)
{
E_Display_L(pagenum,(a+5)*8,etable[a+5]);
};
for(a=0;a<8;a++)
{
E_Display_R(pagenum,a*8,etable[a+8]);
};
//顯示制作時間:Time:2006/11/07
pagenum=7;//在第八行顯示
for(a=0;a<8;a++)
{
E_Display_L(pagenum,a*8,ttable[a]);
E_Display_R(pagenum,a*8,ttable[a+8]);
}
Delay_nms(100);
};
if(flag)
{
read_temperature(temperature_buf);//在轉(zhuǎn)到下一個顯示界面之前空讀一次
read_count_remain();
read_count_c();
DS1621_start();
flag=0;
};
};
WRCommand_L(0x3e);
WRCommand_R(0x3e);
CLR_DisplayRAM(); //清除顯示ram
WRCommand_L(0x3f);
WRCommand_R(0x3f);
while(1)
{
while(read_temperature(temperature_buf)==0);//讀溫度值(兩字節(jié)有符數(shù)),并檢測應(yīng)答位,只使用第一字節(jié)
count_remain=read_count_remain();//讀斜率
count_c=read_count_c();//讀計數(shù)器
temp_buffer = temperature_buf[0] -0.75 + (count_c-count_remain) / (double)count_c;
DS1621_start();//讀完數(shù)據(jù)后,重新開始一次溫度轉(zhuǎn)化
temperature_display[0]=19;
if(temp_buffer<0)
{
temperature_display[1]=16;//顯示負(fù)號
temperature_display[2]=(-temp_buffer)/10;//十位
temperature_display[3]=((uchar)(-temp_buffer))%10;
temperature_display[4]=17;//小數(shù)點(diǎn)
temperature_display[5]=(int)((-temp_buffer)*10)%10;
temperature_display[6]=(int)((-temp_buffer)*100)%10;//小數(shù)點(diǎn)后兩位
}
else
{
temperature_display[1]=temp_buffer/100;//百位
temperature_display[2]=((uchar)temp_buffer)/10%10;
temperature_display[3]=((uchar)temp_buffer)%10;
temperature_display[4]=17;
temperature_display[5]=((int)(temp_buffer*10))%10;
temperature_display[6]=((int)(temp_buffer*100))%10;//小數(shù)點(diǎn)后兩位
}
// 測試從max1241讀出的原始數(shù)據(jù)
/***************************
//pagenum=3;
voltage=read_max1241();
voltage_display[0]=19;
voltage_display[1]= voltage/1000;
voltage_display[2]=(voltage/100)%10;
voltage_display[3]=(voltage/10)%10;
voltage_display[4]= voltage%10;
//*******************************/
//LCD顯示第二部分
for(b=0;b<40;b++)
{
//*************************
//更新max1241顯示值
voltage=(double)read_max1241();
voltage=5000*voltage/4095;
voltage_display[0]=19;
voltage_display[5]=(uint)voltage %10;//個位
voltage_display[2]=17;
voltage_display[4]=(uint)(voltage/10)%10;//小數(shù)點(diǎn)后1位
voltage_display[3]=(uchar)(voltage/100)%10;//小數(shù)點(diǎn)后2位
voltage_display[1]=(uchar)(voltage/1000)%10;//小數(shù)點(diǎn)后3位
//***********************************/
//顯示文字:電壓測量
pagenum=2;
for(a=0;a<2;a++)
C_display_L(pagenum,a*16,a+8);
for(a=0;a<2;a++)
C_display_L(pagenum,(a+2)*16,a+12);
//顯示文字:溫度測量
pagenum=5;
for(a=0;a<2;a++)
C_display_L(pagenum,a*16,a+10);
for(a=0;a<2;a++)
C_display_L(pagenum,(a+2)*16,a+12);
//顯示1241采樣值
pagenum=3;
for(a=0;a<6;a++)
{
E_Display_R(pagenum,a*8,voltage_display[a]);
}
//顯示ds1621采樣值
pagenum=6;
for(a=0;a<7;a++)
{
E_Display_R(pagenum,a*8,temperature_display[a]);
}
};
};
}
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原文標(biāo)題：51單片機(jī)實(shí)例:12位AD_DS1621與12864液晶(程序)
文章出處：【微信號：changxuemcu，微信公眾號：暢學(xué)單片機(jī)】歡迎添加關(guān)注！文章轉(zhuǎn)載請注明出處。
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