JM240128A的驱动程序

#include "jm240.h" #include "ascii0816.h" const uint add[]={0x0000,0x0F00,0x1E00,0x2D00,0x3C00,0x4B00,0x5A00,0x6900,0x7800,0x9700,0xA600,0xB500,0xC400} ; JM240 jm ; void init_jm240() { //set the directio of port DB_DIR=0 ; ADCON1=0x06 ; TRISA=TRISA&0xC0 ; //init global variable jm.graphic_add=0x0000 ; jm.graphic_width=30 ; jm.cur_page=0 ; jm.offset=0x0000 ; jm.char_width=8 ; jm.chn_width=16 ; //init rst_lcd() ; set_graphic(jm.graphic_add,jm.graphic_width) ; wr_cmd0(0x80) ;// 或模式 wr_cmd0(0x98) ;//note here must start graphic display clr_ram() ; } //restart lcd void rst_lcd() { RST=0 ; DelayUs(50) ; RST=1 ; DelayMs(50) ; } //get the currrent state of lcd uchar ch_status() { uchar temp ; CD=1 ; WR=1 ; CE=0 ; DB_DIR=0x00 ; DB=0xff ; RD=0 ; DB_DIR=0xFF ; temp=DB ; RD=1 ; CE=1 ; DB_DIR=0x00 ; return temp ; } //check whether lcd is busy or not at present void ch_busy(uchar flag) { uchar temp1,temp2 ; if(!flag)//one write or read status flag temp2=0x03 ; else { if(flag==1)// auto write status flag check temp2=0x08 ; else//auto read state flag check temp2=0x04 ; } do { temp1=ch_status() ; temp1=temp1&temp2 ; }while(temp1!=temp2) ; } //set graphic mode void set_graphic(uint ad,uchar width) { jm.graphic_add=ad ; jm.graphic_width=width ; wr_cmd3(ad,0x42) ; wr_cmd2(width,0x00,0x43) ; } //read a byte from lcd uchar rd_data() { uchar temp ; ch_busy(0) ; CD=0 ; DB=0 ; CE=0 ; DB_DIR=0x00 ; DB=0xff ; RD=0 ; DB=0 ; CE=0 ; DB_DIR=0xFF ; temp=DB ; RD=1 ; CD=1 ; return temp ; } //send a byte to lcd ram void send_byte(uchar dat) { RD=1 ; DB_DIR=0x00 ; CE=0 ; CD=0 ; WR=0 ; DB=dat ; // DelayUs(2) ; CE=1 ; CD=1 ; WR=1 ; } //send a command word to lcd registor void send_cmd(uchar cmd) { RD=1 ; DB_DIR=0x00 ; CE=0 ; CD=1 ; WR=0 ; DB=cmd ; // DelayUs(2) ; CE=1 ; CD=1 ; WR=1 ; } //write a byte void wr_data(uchar data) { ch_busy(0) ; send_byte(data) ; } //write a command with no parameter void wr_cmd0(uchar cmd) { ch_busy(0) ; send_cmd(cmd) ; } //write a command with one parametre void wr_cmd1(uchar para,uchar cmd) { ch_busy(0) ; send_byte(para) ; ch_busy(0) ; send_cmd(cmd) ; } //write a cammand with two parameters void wr_cmd2(uchar para1,uchar para2,uchar cmd) { ch_busy(0) ; send_byte(para1) ; ch_busy(0) ; send_byte(para2) ; ch_busy(0) ; send_cmd(cmd) ; } //write a command with a uint parameter void wr_cmd3(uint para,uchar cmd) { uchar temp,temp1 ; temp=(uchar )para ; temp1=(uchar)(para>>8) ; wr_cmd2(temp,temp1,cmd) ; } //autowrite void auto_wr(uchar dat) { ch_busy(1) ; send_byte(dat) ; } //autoread uchar auto_rd() { uchar temp ; ch_busy(2) ; CD=0 ; DB=0 ; CE=0 ; DB_DIR=0x00 ; DB=0xff ; RD=0 ; DB=0 ; CE=0 ; DB_DIR=0xFF ; temp=DB ; RD=1 ; CD=1 ; return temp ; } //enable auto write or not void enable_autowr(uchar flag) { if(flag) wr_cmd0(0xB0) ; else wr_cmd0(0xB2) ; } //enable autoread or not void enable_autord(uchar flag) { if(flag) wr_cmd0(0xB1) ; else wr_cmd0(0xB3) ; } //define higher function //current display ram address add add void add_add(uint ad) { uint temp ; jm.offset+=ad ; temp=jm.cur_page+jm.offset ; wr_cmd3(temp,0x24) ; } //set addres s pointer // had better not use this function void set_add(uint ad) { jm.cur_page=ad ; wr_cmd3(ad,0x24) ; } //move address pointer to y row and x column void add_xy(uchar x,uchar y) { uint temp ; temp=(uint)x+((uint)y)*jm.graphic_width ; jm.offset=temp ; temp=temp+jm.cur_page ; wr_cmd3(temp,0x24) ; } void str_disp(const uchar *str,uchar x,uchar y) { uint temp1 ; uchar temp,temp2,j,i ; // wr_cmd0(0x9F) ; // wr_cmd0(0x81) ; // add_xy(1,x,y) ; // while(*str!='\0') // { // temp=*(str++)-0x20 ; // wr_cmd1(temp,0xC0) ;//address auto add 1 // } // wr_cmd0(jm.disp_mode) i=x ; y=y*16 ; while(*str!='\0') { add_xy(i++,y) ; temp1=(*(str++)-0x20)*16 ; for(j=0;j<16;j++) { temp2=ascii0816[temp1+j]; wr_cmd1(temp2,0xC4) ; add_add(30) ; } } } //here as long as we understand how lcd scan screen,we can //implement what function we want //this lcd scan in horizon mode void show_char( uchar dat ,uchar x,uchar y) { uint temp1 ; uchar i ,j ,temp2; y=y*16 ; add_xy(x,y) ; temp1=(dat-0x20)*16 ; //for one char is composed of 16*8 dots ,so we need scan 16 times in horizontal way for(j=0;j<16;j++) { temp2=ascii0816[temp1+j]; //one times we write in 8 dots wr_cmd1(temp2,0xC4) ; add_add(30) ; } } void show_chn(const uchar *chn,uchar x,uchar y) { uchar i ; // x=x*8; y=y*16 ; add_xy(x,y) ; for(i=0;i<16;i++) { wr_cmd1(*chn++,0xC4) ; add_add(1) ; wr_cmd1(*chn++,0xC4) ; add_add(29) ; } } void chns_disp(const uchar *chn,uchar x,uchar y,uchar count) { uchar i,j ; for(i=0;i<count;i++) { add_xy(x+i*2,y) ; for(j=0;j<16;j++) { wr_cmd1(*chn++,0xC4) ; add_add(1) ; wr_cmd1(*chn++,0xC4) ; add_add(29) ; } // y=y+16 ; } } void show_img(uchar x,uchar y,uchar width,uchar height,const uchar *img) { uchar i ,j,temp1,temp2 ; // set_add(jm.cur_page) ; // temp1=(x1-x)/8 ; // temp2=(y1-y) ; add_xy(0,y) ; add_add(x) ; for(i=0;i<height;i++) { for(j=0;j<width;j++) { wr_cmd1(*img++,0xC4) ; add_add(1) ; } add_add(30-width) ; } } void clr_lcd(uchar x,uchar y,uchar width,uchar height) { uchar i,j; width=width/8 ; // add_xy(0,x,y) ; for(i=0;i<height;i++) { add_xy(0,y+i) ;//move to the position where you want to clear add_add(x) ; enable_autowr(1) ; for(j=0;j<width;j++) { auto_wr(0x00) ; } enable_autowr(0) ; } } void clr_ram() { uint i ; set_add(jm.cur_page) ; enable_autowr(1) ; for(i=0;i<0xFFFE;i++) { auto_wr(0x00) ; } enable_autowr(0) ; set_add(jm.cur_page) ; } //this function has some problems void wr_img(uchar x,uchar y,uchar width,uchar height,const uchar *img) { uchar i,j,flag ; if(jm.offset<0xF00) flag=0 ; else flag=1 ; width=width/8 ; for(i=0;i<height;i++) { add_xy(x,y+i) ;//move to the position where you want to clear enable_autowr(1) ; for(j=0;j<width;j++) { auto_wr(*img++) ; } enable_autowr(0) ; } } //draw picture void draw_vline(uchar x,uchar y,uchar height) { uchar i ; add_xy(x,y) ; for(i=0;i<height;i++) { wr_cmd0(0xF8) ; add_add(30) ; } } void draw_hline(uchar x,uchar y,uchar width) { uchar i; add_xy(x,y) ; width=width/8 ; enable_autowr(1) ; for(i=0;i<width;i++) auto_wr(0xff) ; enable_autowr(0) ; } void draw_frame(uchar x,uchar y,uchar width,uchar height) { uchar i,j ; width=width/8 ; //draw two horizon line add_xy(x,y) ; enable_autowr(1) ; for(i=0;i<width;i++) auto_wr(0xFF) ; enable_autowr(0) ; add_xy(x,y+height) ; enable_autowr(1) ; for(i=0;i<width;i++) auto_wr(0xFF) ; enable_autowr(0) ; //draw two vertical line add_xy(x,y) ; for(i=0;i<height;i++) { wr_cmd0(0xFF) ; add_add(29) ; wr_cmd0(0xF8) ; add_add(1) ; } } void draw_point(uchar x,uchar y) { uchar temp ; temp=x%8 ; x=x/8 ; add_xy(0,y) ; add_add(x) ; temp=7-temp+0xF8 ; wr_cmd0(temp) ; } void draw_page(uchar num) { uint temp=jm.cur_page ; set_add(add[num]) ; clr_lcd(0,0,239,127) ; draw_frame(0,0,240,126) ; draw_hline(1,105,220) ; draw_vline(1,20,90) ; // chns_disp(str,8,3,6) ; // chns_disp(str1,205,102,2) ; // show_chn(str2,0,2) ; // show_chn(str2+32,0,3) ; draw_point(12,3) ; set_add(temp) ; }