12864diver.c

OCM12864液晶驱动程序,非常实用

//#include "hal.h"
#include "hal_types.h"
#include "LCD128_64.h"
#include "Font.h"

#ifdef LCD_SUPPORTED
/****************************************************
* B) Command Table per device *
****************************************************/
#define  DisplayOff  0xAE     //关闭lcd  lcd display off
#define  DisplayOn  0xAF     //打开lcd  lcd display on
#define  DisplayStart  0x40     //设置显示开始列位置 set the display RAM display start line address
#define  PageAddr  0xB0     //设置显示开始页位置 set the display RAM page address
#define  ColAddrHi  0x10     //设置显示位置列高地址 set the most significant 4 bits of the display RAM column address
#define  ColAddrLo  0x00     //设置显示位置列低地址 set the least significant 4 bits of the display RAM column address
#define  SegRemapOff  0xA0     // ADC select  normal  正常显示 set the display RAM address SEG output correspondence
#define  SegRemapOn  0xA1     // ADC select  reverse 反黑显示
#define  NormalDisp  0xA6    //lcd 正常显示 set the lcd display normal
#define  ReverseDisp  0xA7    //lcd 反向显示 set the lcd display reverse
#define  ExitEntireD  0xA4    //设置整个屏幕显示 正常显示 display all points :normal display
#define  EntEntireD  0xA5    //全部显示    display all points :all points on
#define  EnterRMW  0xE0    //进入Read/Modify/Write模式,列地址增量  column address increment at write +1,at read 0;
#define  ExitRMW  0xEE    //退出RMW     clear read/modify/write
#define  SWRest   0xE2   //内部复位    internal reset
#define  ComRemapOff  0xC0   //设置COM输出扫描方向，垂直扫描 select COM output scan direction:0 normal direction
#define  ComRemapOn  0xC8   //水平扫描   1 reverse direction
#define  PwrCtrlReg  0x28  //选择内部电源模式  select internal power supply operating mode
#define  OPampBuffer  0x01   //
#define  IntReg   0x02   //
#define  IntVolBstr  0x04   //内部电压
#define  IntRegRatio  0x20   //选择内部电阻率模式（Rb/Ra）select internal resistor ratio(Ra/Rb)mode
#define  ContCtrlReg  0x81   // 内部对比度控制器 set the v0 output voltage electronic volume register
#define  CmdMuxRatio  0x48   // 设置集多重比率
#define  CmdBiasRatio  0x50   // 设置偏压比
#define  DispOffset  0x44   // 设置显示偏移
#define  IconModeOn  0xA3    //设置液晶驱动电压偏差率  sets the lcd drive voltage bias ratio 1/9 bias
#define  IconModeOff  0xA2   //1/7 bias(st756p)
#define  NlineInver  0x4C   //
#define  DCDCconver  0x64   //dc-dc 转换
#define  PowersavStandby 0xA8  // 待机模式 standby mode
#define  PowersavSleep  0xA9  //休眠模式    sleep mode
#define  PowersavOff  0xE1  //省电关闭 power save off 
#define  InterOsc  0xAB  // 内部振荡器
#define  Device SSD1821   / /*设备演示装置  device under demo */
#define  ColNo   132  / /* lcd玻璃板的列/柱数目 number of Column/Seg on LCD glass*/
#define  RowNo   64  //* Row/Com/Mux的数目   number of Row/Com/Mux */
#define  PS   1  / /*固定并行模式 fixed to Parallel mode */
#define  PageNo   10  / /*总共没有内存页 Total no of RAM pages */
#define  IconPage  10  / /*图标页码 Icon Page number */
#define  All0   6  / /* 3 for all 0, 4 for all 1 */
#define  All1   4
#define  iIntRegValue  1  / /*内部稳压电阻比值 Internal Regulator Resistor Ratio Value */
#define  iContCtrlRegValue 16  / /* 设定缺省对比度  Contrast Control Register Value */
#define  iIntRegValuea  20  / /* 内部稳压电阻比值  Internal Regulator Resistor Ratio Value */
#define  iContCtrlRegValuea 16 /  /* Contrast Control Register Value */
#define  iIntRegValueb  1  / /*内部稳压电阻比值 Internal Regulator Resistor Ratio Value */
#define  iContCtrlRegValueb 16 /  /* Contrast Control Register Value */
#define  MSGNo   16
#define  MSGLength  22
#define  SSLNameNo  4
#define  DevicePg  0   //内存页的显示设备名称 RAM page for showing device name
#define  FeaturePg  1   //内存页显示功能  RAM page for showing feature
#define  GRAPHICNo  13
#define  xlogo   38
#define  ylogo   5
#define  xsolomon  91
#define  ysolomon  2
#define  xsystech  81
#define  ysystech  2
#define  xlimited  70
#define  ylimited  2
#define  xcc   16
#define  ycc   2
#define  xpageq   128
#define  ypageq   4
#define  horizonal  0
#define  d_time   60   //延时
////////////////////////////////////////////////////////////////////////////////////////////

void Print8(INT16U y,INT16U x, INT8U ch[],INT16U yn);

INT8U ContrastValue =90;
void WriteLCD(INT8U fs, INT8U da);
void Write595(INT8U dat);
void delay_us(INT16U s);
void delay1(INT8U jj);
void contrastctrl(INT8U start, INT8U stop);
void HalLcdInit(void);
void PrintCh8(INT16U y,INT16U x, INT8U ch,INT16U yn);

void delay1(INT8U jj)        //单字节延时
{
 INT8U i;
 for(i=0; i<jj; i++);
}

void delay_us(INT16U s)    //双字节延时
{
 INT16U i;
 for(i=0; i<s; i++);
 for(i=0; i<s; i++);
}


//******************************************************************************
//???:void Write595(INT8U dat)
//?功能:写595数据?
//??:?
//????:595???,????8?
//******************************************************************************
void Write595(INT8U dat)
{
 
 INT8U ii;  
   
 for(ii = 0 ; ii < 8; ii++)
 {
  if(dat & 0x80)  LCD_595_DAT = 1;  //取数据，最高位相与
  else  LCD_595_DAT = 0;
  
  dat <<= 1;    //左移一位
  LCD_595_CK = 1; //一个时钟变化送一个数据
  LCD_595_CK = 0;
 }
 LCD_595_LD = 1;
 LCD_595_LD = 0;
}


//*****************************************************************************
//*****************************************************************************
//???:void delay(unsigned int n)
//????:??????
//*****************************************************************************
void WriteLCD(INT8U fs, INT8U da)
{
 delay1(0);
 LCD_CS1 = 0;                     //片使能
 LCD_RW = 0;   //写模式
 //delay1(0); 

 if(fs){
  LCD_RS = 1;  //数据寄存器 
 }
 else{
  LCD_RS = 0;  //指令寄存器
 }
       // delay1(0);

        Write595(da);
 LCD_E = 1;     // = 1;使能信号
        delay1(0);
 LCD_E = 0;     // = 0;     
 //delay1(0);
 LCD_CS1 = 1;  //片禁止
}
/*

INT8U ReadLCD(INT8U fs)      //读取lcd数据
{
 INT8U temp = 0;
 LCD_CS1 = 0;
 NOP;
 NOP;
 NOP;
 NOP;
 do{      
  LCD_RW = 1;
  LCD_RS = 0;
  LCD_E = 1;
  NOP;
  NOP;       
  temp = P1 & 0x80;   
  LCD_E = 0;   

 }while(temp != 0); 

 if(fs){
  LCD_RS = 1; 
 }
 else{
  LCD_RS = 0;
 }
 
 LCD_E = 1;
 NOP; 
 NOP;
 NOP;
 NOP; 
 temp = P1; 
 LCD_E = 0; 
 LCD_CS1 = 1;
 return(temp);
}


*/
void SetRamAddr(INT8U x ,INT8U y)   //lcd位置选择
{
 INT8U temp;
 
 temp = 0x0f & x;
 WriteLCD(COMMAND , PageAddr|temp);  //设置显示位置一行

 temp = 0x0f & (y >> 4);
 WriteLCD(COMMAND , ColAddrHi|temp);//高位set higher column address
 temp = 0x0f & y;
 WriteLCD(COMMAND , ColAddrLo|temp);//低位set lower column address
}


/*******************************************************************************
//???:void SetContrast(INT8U Gain, INT8U Step)
//??:lcd对比度设定
//??:Page-页,Col-列
//??:无
********************************************************************************/
void SetContrast(INT8U Gain, INT8U Step)
{
 WriteLCD(COMMAND , IntRegRatio | (0x0f & Gain));  //设定内部电阻
 WriteLCD(COMMAND , ContCtrlReg);    //设定内部对比度控制器
 WriteLCD(COMMAND , 0x3f & Step);
}

 

/*******************************************************************************
//???:void InitDisplay(void)
//??:lcd初始化
//??:?
//??:?
********************************************************************************/
void InitDisplay(void)
{
 WriteLCD(COMMAND , DisplayOff);   //关闭lcd
 WriteLCD(COMMAND , SegRemapOn);       //ks0713/ssd1815
 WriteLCD(COMMAND , ComRemapOn);       //ssd1815
 SetContrast(iIntRegValue, iContCtrlRegValue);  //设定缺省对比度
 WriteLCD(COMMAND , PwrCtrlReg | IntVolBstr | IntReg | OPampBuffer); //turn on booster, regulator & divider
 WriteLCD(COMMAND , DisplayOn);    //开启lcd
}


/*******************************************************************************
//???:void contrastctrl(INT8U start,stop)
//??:lcd?????
//??:?
//??:?
********************************************************************************/

void contrastctrl(INT8U start, INT8U stop)
{
 INT8U i;
 if (start < stop)
 {
  for (i=start; i<stop; i+=1)
  {
   SetContrast(iIntRegValue, i); //slowly turn on display
   delay_us(80);
  }
 }
 else
 {
  for (i=start; i>stop; i-=1)
  {
   SetContrast(iIntRegValue, i); //slowly turn off display
   delay_us(120);
  }
 }
}

 


void ClearScreen(void)             //清屏
{
  INT8U x,y;
 for(x = 0;x < 8 ;x++){
          SetRamAddr(x , 0);
    for(y = 0 ; y < 128 ; y++){     
        
   WriteLCD(DATA , 0x00);
  }  
 }
}


void HalLcdInit(void)
{ 

        P1DIR |= 0xFC;
        P2DIR |= 0x01;
        P0DIR |= 0x02;
        P1_2 = 0;
 delay_us(100); 
 WriteLCD(COMMAND , 0xE2);//内部复位

 delay_us(100);
 WriteLCD(COMMAND , 0xA3);//设置液晶驱动电压偏差率  sets the lcd drive voltage bias ratio 1/7bias

 delay_us(100); 
 WriteLCD(COMMAND , 0xA0);//ADC select  normal  正常 set the display RAM address SEG output correspondence
 
 delay_us(100);
 WriteLCD(COMMAND , 0xC8);//输出扫描方向  reverse反方向

 delay_us(100); 
 WriteLCD(COMMAND , 0x24);//
 
 delay_us(100);
 WriteLCD(COMMAND , 0x81);// 电量模式设置 electronic volume mode set , set the v0 output voltage electronic volume register

 delay_us(100); 
 WriteLCD(COMMAND , 0x14);//高地址显示位置
 
 delay_us(100);
 WriteLCD(COMMAND , 0x2F);//增压电路booster circuit on,电压调节器电路voltage regulator circuit on,电压跟随器电路voltage follower cicuit on.

 delay_us(100); 
 WriteLCD(COMMAND , 0x40);//显示行位置
 
 delay_us(100);
 WriteLCD(COMMAND , 0xB0);//显示页位置

 delay_us(100); 
 WriteLCD(COMMAND , 0x10);//显示高4位列地址
 
 delay_us(100);