基于ST7565控制器的LCM驅(qū)動方法

yng326309158 2011-03-28

展開全文

項目中需要用到LCD，初步選擇為ST7565控制器的COG LCM。在網(wǎng)上找到一圈，發(fā)現(xiàn)現(xiàn)成的程序都是基于I/O的操作方式的（這款LCM可以由客戶來選擇是并行驅(qū)動還是串行驅(qū)動，并行驅(qū)動還可以選擇是80的時序或者是68的時序的，可以說是功能強大，使用靈活）。I/O操作方式就是I/O操作方式吧，寫了個程序，發(fā)現(xiàn)用不了，而且看起來費勁。從網(wǎng)上當了個英文的PDF資料，一點點的全部看完，發(fā)現(xiàn)是可以用總線的操作方式的，不然為什么讓選80還是68時序呀。折騰了一陣，終于把程序調(diào)出來了，公布出來和大家分享：

#include<mega128.h>
#include<microdefine.h>

#define unchar unsigned char
#define unint unsigned int

#define Lcd_Command (*(volatile unsigned char *)0xddff)
#define Lcd_Data (*(volatile unsigned char *)0xdfff)

void init_System(void); /*初始化系統(tǒng)*/
void delayms(unint temp);

void write_LcdData(unchar data1);                        /*向LCD寫一個數(shù)據(jù)*/
void write_LcdComm(unchar comm);                        /*向LCD寫一個命令*/
void busycheck(void);
void initLCD(void);
void clearLCD(void);
void display_168(unchar Page,unchar Column,unchar temp);
void PutChar(unchar Page,unchar Column,const unchar *temp);
void PutPicture(unchar Page,unchar Column,const unchar *temp);

void main(void) /*主程序*/
{
unchar seg;
unchar page;

init_System();
initLCD();

PutPicture(0xb0,24,array10);
PutChar(0xb2,0,array1);
display_168(0xb3,8,1);
display_168(0xb3,16,0);
display_168(0xb3,24,0);
display_168(0xb3,32,0);

display_168(0xb3,48,1);
display_168(0xb3,56,0);
display_168(0xb3,64,0);
PutChar(0xb4,72,array6);
display_168(0xb3,78,0);

display_168(0xb3,90,2);
display_168(0xb3,98,0);
display_168(0xb3,106,0);
PutChar(0xb4,114,array6);
display_168(0xb3,120,0);

PutChar(0xb5,0,array4);
PutChar(0xb5,22,array2);
PutChar(0xb5,44,array7);
PutChar(0xb5,64,array2);
PutChar(0xb5,90,array8);
PutChar(0xb5,106,array3);

write_LcdComm(0xb0);
write_LcdComm(0x16);
write_LcdComm(0x0e);

for(seg=0;seg<16;seg++)
{
  write_LcdData(array9[seg]);
}
while(1);
}

void init_System(void)
{
MCUCR |= 0xc0; /*使能外部SRAM*/
XMCRA = 0x02; /*使用統(tǒng)一最長等待時間*/
XMCRB = 0x00;

// DDRD = 0x0c;
}

/*******************************************************************************
軟件延時，temp即為temp個ms
*******************************************************************************/
void delayms(unint temp)
{
unchar j;

for(j=0;j<temp;j++);
}

void busycheck(void)
{
unchar Status;

do
{
Status = Lcd_Command;
Status = Status & 0x80;
}while(Status == 0x80);
}

void write_LcdData(unchar data1) /*向LCD寫一個數(shù)據(jù)*/
{
busycheck();
Lcd_Data = data1;
}

void write_LcdComm(unchar comm) /*向LCD寫一個命令*/
{
busycheck();
Lcd_Command=comm;
}

void initLCD(void)
{
write_LcdComm(0xaf);                             /*顯示開*/
write_LcdComm(0x40);                             /*開始行地址*/
write_LcdComm(0xa0);                             /*非反轉(zhuǎn)的正常顯示*/
write_LcdComm(0xa6);                             /*非反白顯示*/
write_LcdComm(0xa4);                             /*非全屏顯示*/
write_LcdComm(0xa2);                             /*1/9 bias*/
write_LcdComm(0xc8);                             /*com0-com63-com1*/
write_LcdComm(0x2f);                             /*電源全開*/
write_LcdComm(0x24);                             /*對比度調(diào)節(jié)*/
write_LcdComm(0x81);                             /*進入亮度調(diào)節(jié)寄存器*/
write_LcdComm(0x24);                             /*亮度值*/
clearLCD();
}

void clearLCD(void)
{
unchar page;
unchar seg;

for(page=0xb0;page<0xb9;page++)
{
  write_LcdComm(page);
  write_LcdComm(0x10);                            /*列地址高位，D4位為1表示高位地址*/
  write_LcdComm(0x00);                            /*列地址低位，D4位為0表示低位地址*/
  for(seg=0;seg<128;seg++)
  {
   write_LcdData(0x00);
  }
}
}

/*******************************************************************************
顯示8*16數(shù)字
Page必須在0xb0~0xb7之間
*******************************************************************************/
void display_168(unchar Page,unchar Column,unchar temp)
{
unchar ColLow;
unchar ColHigh;
unchar i;
unchar asc;

i = Column;
ColHigh = i & 0xf0;
ColHigh = ColHigh/16;
ColHigh = ColHigh | 0x10;
ColLow = i & 0x0f;

write_LcdComm(Page);
write_LcdComm(ColHigh);
write_LcdComm(ColLow);

asc = temp*16;
for(i=0;i<8;i++)
{
  write_LcdData(zk_ShuZi[asc]);
  asc++;
}
write_LcdComm(Page+1);
write_LcdComm(ColHigh);
write_LcdComm(ColLow);
for(i=0;i<8;i++)
{
  write_LcdData(zk_ShuZi[asc]);
  asc++;
}
}
/*******************************************************************************
顯示6*8數(shù)字和字母
Page必須在0xb0~0xb7之間
*******************************************************************************/
void PutChar(unchar Page,unchar Column,const unchar *temp)
{
unchar i;
unchar j;
unint asc;
unchar len;

write_LcdComm(Page);
i = Column;
j = i & 0xf0;
j = j/16;
write_LcdComm(0x10|j);                            /*列地址高位，D4位為1表示高位地址*/
write_LcdComm(0x0f&i);

do
{
  asc = (*temp-32)*6;
  for(i=0;i<6;i++)
  {
   write_LcdData(zk_Asc[asc]);
   asc++;
  }
  temp++;
}while((*temp) != '?');
}

void PutPicture(unchar Page,unchar Column,const unchar *temp)
{
unchar ColLow;
unchar ColHigh;
unchar i;
unchar asc;

i = Column;
ColHigh = i & 0xf0;
ColHigh = ColHigh/16;
ColHigh = ColHigh | 0x10;
ColLow = i & 0x0f;

write_LcdComm(Page);
write_LcdComm(ColHigh);
write_LcdComm(ColLow);

for(i=0;i<67;i++)
{
  write_LcdData(*temp);
  temp++;
}
write_LcdComm(Page+1);
write_LcdComm(ColHigh);
write_LcdComm(ColLow);
for(i=0;i<67;i++)
{
  write_LcdData(*temp);
  temp++;
}
}