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#include "reg51.h"
#include "intrins.h"
#include "codetab.h"
#define uint unsigned int
#define uchar unsigned char
// ------------------------------------------------------------
// IO口模擬I2C通信
// ------------------------------------------------------------
sbit SCL=P3^4; //串行時鐘
sbit SDA=P3^3; //串行數據
sbit KEY1= P3^2; //調整
sbit KEY2= P3^0; //++
sbit KEY3= P3^5; //--
uchar a1,a2,a3; //按鍵消斗用
uchar disflag=0; //時間調整相關
#define Brightness 0xcf //
#define X_WIDTH 128
#define Y_WIDTH 64
/********************************************************************************************************
** DS3231常數定義
********************************************************************************************************/
#define DS3231_WriteAddress 0xD0 //器件寫地址
#define DS3231_ReadAddress 0xD1 //器件讀地址
#define DS3231_SECOND 0x00 //秒
#define DS3231_MINUTE 0x01 //分
#define DS3231_HOUR 0x02 //時
#define DS3231_WEEK 0x03 //星期
#define DS3231_DAY 0x04 //日
#define DS3231_MONTH 0x05 //月
#define DS3231_YEAR 0x06 //年
#define NACK 1
#define ACK 0
char hour,minute,second,year,month,day,week;
uchar TH3231;
bit ack; //應答標志位
/*********************OLED驅動程序用的延時程序************************************/
/*void delay(unsigned int z)
{
unsigned int x,y;
for(x=z;x>0;x--)
for(y=1100;y>0;y--);
} */
void Delay5US() //@12.000MHz 延時5us
{
_nop_(); _nop_(); _nop_();_nop_();
}
/**********************************************
//IIC Start
**********************************************/
void IIC_Start()
{
SCL = 1;
SDA = 1;
SDA = 0;
SCL = 0;
}
/**********************************************
//IIC Stop
**********************************************/
void IIC_Stop()
{
SCL = 0;
SDA = 0;
SCL = 1;
SDA = 1;
}
/********************************************************************************************************
** 3231
********************************************************************************************************/
uchar BCD2HEX(uchar val)
{
return ((val>>4)*10)+(val&0x0f);
}
uchar HEX2BCD(uchar val)
{
return (((val%100)/10)<<4)|(val%10);
}
void SendByte(uchar c)
{
uchar BitCnt;
for(BitCnt=0;BitCnt<8;BitCnt++) //要傳送的數據長度為8位
{
if((c<<BitCnt)&0x80)
SDA=1; //判斷發送位
else
SDA=0;
SCL=1; //置時鐘線為高，通知被控器開始接收數據位
Delay5US(); //保證時鐘高電平周期大于4μs
SCL=0;
}
SDA=1; //8位發送完后釋放數據線，準備接收應答位
SCL=1;
Delay5US();
if(SDA==1)
ack=0;
else
ack=1; //判斷是否接收到應答信號
SCL=0;
Delay5US();
}
uchar RcvByte()
{
uchar retc;
uchar BitCnt;
retc=0;
SDA=1; //置數據線為輸入方式
for(BitCnt=0;BitCnt<8;BitCnt++)
{
SCL=0; //置時鐘線為低，準備接收數據位
Delay5US(); //時鐘低電平周期大于4.7μs
SCL=1; //置時鐘線為高使數據線上數據有效
Delay5US();
retc=retc<<1;
if(SDA==1)
retc=retc+1; //讀數據位,接收的數據位放入retc中
Delay5US();
}
SCL=0;
return(retc);
}
void Ack_I2C(bit a)
{
SDA = a;
SCL=1;
Delay5US(); //時鐘低電平周期大于4us
SCL=0; //清時鐘線，鉗住I2C總線以便繼續接收
Delay5US();
}
uchar write_byte(uchar addr, uchar write_data)
{
IIC_Start();
SendByte(DS3231_WriteAddress);
if (ack == 0)
return 0;
SendByte(addr);
if (ack == 0)
return 0;
SendByte(write_data);
if (ack == 0)
return 0;
IIC_Stop();
Delay5US();
Delay5US();
return 1;
}
uchar read_current()
{
uchar read_data;
IIC_Start();
SendByte(DS3231_ReadAddress);
if(ack==0)
return(0);
read_data = RcvByte();
Ack_I2C(1);
IIC_Stop();
return read_data;
}
uchar read_random(uchar random_addr)
{
uchar Tmp;
IIC_Start();
SendByte(DS3231_WriteAddress);
if(ack==0)
return(0);
SendByte(random_addr);
if(ack==0)
return(0);
Tmp=read_current();
if(random_addr==DS3231_HOUR)
Tmp&=0x3f;
return(BCD2HEX(Tmp));//都轉10進制輸出
}
void ModifyTime(uchar address,uchar num)
{
uchar temp=0;
if(address>6 && address <0) return;
temp=HEX2BCD(num);
write_byte(address,temp);
}
uint read_temp()
{
int itemp;
float ftemp;
//溫度數據是以2 進制格式存儲的并不需要數制轉換
write_byte(0x0e,0x20);//0x0e寄存器的CONV位置1開啟溫度轉換
itemp = ( (int) read_random(0x11) << 5 ); //放大32倍
itemp += ( read_random(0x12)>> 3);
IIC_Stop();
if(itemp & 0x1000)
itemp += 0xe000;
ftemp = 0.3125 * (float) itemp+0.5; //放大10倍
return (uint) ftemp;
}
/*********************OLED寫數據************************************/
void OLED_WrDat(unsigned char IIC_Data)
{
IIC_Start();
SendByte(0x78);
SendByte(0x40); //write data
SendByte(IIC_Data);
IIC_Stop();
}
/*********************OLED寫命令************************************/
void OLED_WrCmd(unsigned char IIC_Command)
{
IIC_Start();
SendByte(0x78); //Slave address,SA0=0
SendByte(0x00); //write command
SendByte(IIC_Command);
IIC_Stop();
}
/*********************OLED 設置坐標************************************/
void OLED_Set_Pos(unsigned char x, unsigned char y)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(((x&0xf0)>>4)|0x10);
OLED_WrCmd((x&0x0f)|0x01);
}
/*********************OLED全屏************************************/
void OLED_Fill(unsigned char bmp_dat)
{
unsigned char y,x;
for(y=0;y<8;y++)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(0x01);
OLED_WrCmd(0x10);
for(x=0;x<X_WIDTH;x++)
OLED_WrDat(bmp_dat);
}
}
/*********************OLED復位************************************/
void OLED_CLS(void)
{
unsigned char y,x;
for(y=0;y<8;y++)
{
OLED_WrCmd(0xb0+y);
OLED_WrCmd(0x01);
OLED_WrCmd(0x10);
for(x=0;x<X_WIDTH;x++)
OLED_WrDat(0);
}
}
/*********************OLED初始化************************************/
void OLED_Init(void)
{
Delay5US();//初始化之前的延時很重要！
OLED_WrCmd(0xae);//--turn off oled panel
OLED_WrCmd(0x00);//---set low column address
OLED_WrCmd(0x10);//---set high column address
OLED_WrCmd(0x40);//--set start line address Set Mapping RAM Display Start Line (0x00~0x3F)
OLED_WrCmd(0x81);//--set contrast control register
OLED_WrCmd(Brightness); // Set SEG Output Current Brightness
OLED_WrCmd(0xa1);//--Set SEG/Column Mapping 0xa0左右反置 0xa1正常
OLED_WrCmd(0xc8);//Set COM/Row Scan Direction 0xc0上下反置 0xc8正常
OLED_WrCmd(0xa6);//--set normal display
OLED_WrCmd(0xa8);//--set multiplex ratio(1 to 64)
OLED_WrCmd(0x3f);//--1/64 duty
OLED_WrCmd(0xd3);//-set display offset Shift Mapping RAM Counter (0x00~0x3F)
OLED_WrCmd(0x00);//-not offset
OLED_WrCmd(0xd5);//--set display clock divide ratio/oscillator frequency
OLED_WrCmd(0x80);//--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WrCmd(0xd9);//--set pre-charge period
OLED_WrCmd(0xf1);//Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WrCmd(0xda);//--set com pins hardware configuration
OLED_WrCmd(0x12);
OLED_WrCmd(0xdb);//--set vcomh
OLED_WrCmd(0x40);//Set VCOM Deselect Level
OLED_WrCmd(0x20);//-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WrCmd(0x02);//
OLED_WrCmd(0x8d);//--set Charge Pump enable/disable
OLED_WrCmd(0x14);//--set(0x10) disable
OLED_WrCmd(0xa4);// Disable Entire Display On (0xa4/0xa5)
OLED_WrCmd(0xa6);// Disable Inverse Display On (0xa6/a7)
OLED_WrCmd(0xaf);//--turn on oled panel
OLED_Fill(0x00); //初始清屏
OLED_Set_Pos(0,0);
}
/*******************功能描述：顯示8*16一組標準ASCII字符串顯示的坐標（x,y），y為頁范圍0～7****************/
/*void OLED_P8x16List(unsigned char x, y,unsigned char ch[])
{
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