CGM12864B并行驱动(51).doc

一直用的都是串行的LCD，突然试了一下并行的，原来这么简单，就是占IO口太多了main.c内容：#include #include lcd12864.h#include uint8 code han=0x10,0x60,0x01,0x86,0x60,0x04,0x1C,0xE4,0x04,0x04,0x04,0xE4,0x1C,0x04,0x00,0x00,0x04,0x04,0x7E,0x01,0x40,0x20,0x20,0x10,0x0B,0x04,0x0B,0x10,0x30,0x60,0x20,0x00; /汉uint8 code zi=0x00,0x10,0x0C,0x24,0x24,0x24,0x25,0x26,0xA4,0x64,0x24,0x04,0x14,0x0C,0x00,0x00,0x00,0x02,0x02,0x02,0x02,0x42,0x82,0x7F,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x00;/字uint8 code xian=0x00,0x00,0x00,0x3E,0x2A,0xEA,0x2A,0x2A,0x2A,0xEA,0x2A,0x3E,0x00,0x00,0x00,0x00,0x20,0x21,0x22,0x2C,0x20,0x3F,0x20,0x20,0x20,0x3F,0x28,0x24,0x23,0x20,0x20,0x00;/显,uint8 code shi=0x00,0x20,0x20,0x22,0x22,0x22,0x22,0xE2,0x22,0x22,0x22,0x22,0x22,0x20,0x20,0x00,0x10,0x08,0x04,0x03,0x00,0x40,0x80,0x7F,0x00,0x00,0x01,0x02,0x0C,0x18,0x00,0x00;/示/-/功能：延时/参数：t 延时参数delay(uint16 t)while(t-);/-/功能:向12864写1字节命令或数据/参数:_data 写入的数据 _cmd 取CMD 或DATAwrite(uint8 _data,uint8 _cmd)check_busy();IS_WR();if(_cmd=CMD) IS_CMD();else IS_DATA();E=1;DATA_PORT=_data;delay(10);E=0;/-/功能:读取 BUSY RST DISP_ON/OFF标志/参数:无uint8 read()uint8 temp;DI=0;RW=1; /readE=1;delay(10);temp=DATA_PORT;E=0;return temp;/-/功能:初始化 复位LCD,读RST标志/参数:无lcd_init()RST=0;delay(10); /at least 1usRST=1;E=0;DI=1;RW=1;check_rst(); /loop while status RST=0/-set_xy(uint8 x,uint8 y) /063 x&=0x3f;write(0x40+x,CMD); /set x addres/ write(0xc0,CMD); /set z addressy&=0x07;write(0xb8+y,CMD); /set y address/-/功能:显示1个汉字/参数:x y为汉字显示位置,x可取03,y可取03 *p为字模指针disp16x16(uint8 x,uint8 y,uint8 *p)uint8 i;if(x4) & (y4) set_xy(x*16,y*2); for(i=0;i16;i+) write(pi,DATA); set_xy(x*16,y*2+1); for(i=16;i32;i+) write(pi,DATA); /-/功能：清楚开显示的半屏/参数:无clear()uint8 i,j;for(i=0;i8;i+) /clear ram set_xy(0,i); for(j=0;j64;j+) write(0x00,DATA); /-main() delay(0xffff); lcd_init(); left_screen_on(); /display on left_half_screen clear(); disp16x16(0,1,han); disp16x16(1,1,zi); disp16x16(2,1,xian); disp16x16(3,1,shi); right_screen_on(); clear(); disp16x16(1,0,han); disp16x16(1,1,zi); disp16x16(1,2,xian); disp16x16(1,3,shi); while(1); LCD12864.内容：#ifndef _12864_#define _12864_#define DI P3_2 /H data, L command#define RW P3_3 /H read, L write#define E P3_4 /H active#define CS1 P3_5 /H#define CS2 P3_6 /H#define RST P3_7 /L active#define DATA_PORT P2#define WR 0#define RD 1#define IS_WR() RW=0#define IS_RD() RW=1#define CMD 0#define DATA 1#define IS_CMD() DI=0#define IS_DATA() DI=1typedef unsigned char uint8;typedef unsigned int uint16;#define check_busy() while(read()&0x80)#define check_rst() while(read()&0x10)#define left_screen_on() CS1=1;CS2=0; write(0x3f,CMD)#define right_screen_on() CS1=0;CS2=1;write(0x3f,CMD)delay(ui