lcd_tri_12864.rar_lcd ip

#include "alt_types.h" #include "distable.h" #include "lcd_tri_12864.h" #include "lcd_tri_12864_regs.h" //#include "ziku.h" #include "system.h" #include "altera_avalon_pio_regs.h" #include <string.h> #include <stdio.h> #include <unistd.h> //#define LCD_CS *( unsigned char *)LCD12864_CS_BASE alt_u8 busy; static void LCD_CS(unsigned char data) { IOWR_ALTERA_AVALON_PIO_DATA(LCD12864_CS_BASE, data); } unsigned char LcdChkBusy(unsigned int base) { alt_u32 i = 1000000; while (IORD_LCD_STATUS(base) & 0x80)//_8DIRECT(LCD_12864_0_BASE,0x1) & 0x80) if (--i == 0) { busy=1; return 1; } busy=0; return 0; } static void lcd_write_cmd(unsigned int base, unsigned char command) { //if(LcdChkBusy(base)) if(busy) return; usleep(20); IOWR_LCD_COMMAND(base,command); } static void lcd_write_data(unsigned int base, unsigned char data) { // if(LcdChkBusy(base)) if(busy) return; usleep(20); IOWR_LCD_DATA(base, data); } //*************12864LCD*********** void Lcd12864Init(unsigned int base)//初始化. { LCD_CS(0x3); LcdChkBusy(base); lcd_write_cmd(base,0xc0); usleep(20); lcd_write_cmd(base,0x3f); usleep(200); } /*带字库LCD清屏 void Lcd12864Clear(unsigned int base)//清屏 { lcd_write_cmd(base,0x01); usleep(2000); } */ void Lcd12864Clear(unsigned int base)//清屏 { unsigned char PageTmp,ColumnTmp,CmdTmp; LCD_CS(0x3); for(PageTmp=0;PageTmp<8;PageTmp++) { CmdTmp=PageTmp|0xb8; //页地址 lcd_write_cmd(base,CmdTmp); lcd_write_cmd(base,0x40); for(ColumnTmp=0x0;ColumnTmp<0x40;ColumnTmp++)//64行 { lcd_write_data(base,0); } } } void DisChar(unsigned int base,unsigned char PageAddrP,unsigned char RowAddrP, unsigned int DisDatP,unsigned char cs) { unsigned char cc,PageTmp,RowTmp; unsigned int TabTmp; LCD_CS(cs); PageTmp=PageAddrP|0xb8;//0xb8为设置页地址，如果为0xc0则是设置行地址，如果是行，总共有64行。 RowTmp =RowAddrP+0x40; TabTmp =DisDatP-0x20; TabTmp*=5; lcd_write_cmd(base,PageTmp); lcd_write_cmd(base,RowTmp); for(cc=0;cc<5;cc++) //写入5列地址，第个字符占5列 { lcd_write_data(base,ziku[TabTmp+cc]); } } void Disstring(unsigned int base,unsigned char *str,unsigned int len, unsigned char PageAddrP,unsigned char RowAddrP,unsigned char cs) { unsigned char i,OffSetTmp; for(i=0;i<len;i++) //共12个字符 { OffSetTmp=i*5; //一个字符用了5列 DisChar(base,PageAddrP,OffSetTmp+RowAddrP,str[i],cs); } } //Dishaizi(PageAddrP:LCD页数0~7页，RowAddrP:起始列即从第几列开始显示，DisDatP：显示数组中的第N+1个字， //CS:1为选择左屏2为右屏，haizi[]:要显示的汉字数组名) void Dishaizi1(unsigned int base ,unsigned char PageAddrP,unsigned char RowAddrP,unsigned int DisDatP, unsigned char cs ,unsigned char haizi[]) { LCD_CS(cs); unsigned char cc,PageTmp,RowTmp; unsigned int TabTmp;//列数存储变量 PageTmp=PageAddrP|0xb8;//0xb8为设置页地址指令，每8行一页，如果为0xc0则是设置行地址，如果是行，总共有64行。 RowTmp =RowAddrP+0x40;//0x40为设置列地址指令 TabTmp=DisDatP*32;//DisDatP为数组中是第N+1个籽，每个汉字占32列，所以显示完一个汉字后，TabTmp+32 lcd_write_cmd(base,PageTmp);//写入页地址 lcd_write_cmd(base,RowTmp);//写入列地址 for(cc=0;cc<15;cc++) //一个汉字32列，使用字模提取V2.1获取的字模 { lcd_write_data(base,haizi[TabTmp+cc]); //读取数组中的汉字 } } void Dishaizi2(unsigned int base ,unsigned char PageAddrP,unsigned char RowAddrP,unsigned int DisDatP, unsigned char cs ,unsigned char haizi[]) { LCD_CS(cs); unsigned char cc,PageTmp,RowTmp; unsigned int TabTmp;//列数存储变量 PageTmp=PageAddrP|0xb8;//0xb8为设置页地址指令，每8行一页，如果为0xc0则是设置行地址，如果是行，总共有64行。 RowTmp =RowAddrP+0x40;//0x40为设置列地址指令 TabTmp=DisDatP*32;//DisDatP为数组中是第N+1个籽，每个汉字占32列，所以显示完一个汉字后，TabTmp+32 lcd_write_cmd(base,PageTmp);//写入页地址 lcd_write_cmd(base,RowTmp);//写入列地址 for(cc=16;cc<31;cc++) //一个汉字32列，使用字模提取V2.1获取的字模 { lcd_write_data(base,haizi[TabTmp+cc]); //读取数组中的汉字 } // LCD_CS=0; } void Dishaizi(unsigned int base ,unsigned char PageAddrP,unsigned char RowAddrP,unsigned int DisDatP, unsigned char cs ,unsigned char haizi[]) { Dishaizi1(base,PageAddrP ,RowAddrP,DisDatP,cs,haizi); Dishaizi2(base,PageAddrP+1,RowAddrP,DisDatP,cs,haizi); } void Disstring_line(unsigned int base,unsigned char *str,unsigned char len, unsigned char PageAddrP) { unsigned char i,OffSetTmp; // unsigned int len=strlen(str); if(len<12) for(i=0;i<len;i++) { OffSetTmp=i*5; //一个字符用了5列 DisChar(base,PageAddrP,OffSetTmp,str[i],1); } else { for(i=0;i<12;i++) //左半屏 { OffSetTmp=i*5; //一个字符用了5列 DisChar(base,PageAddrP,OffSetTmp+2,str[i],1); } for(i=12;i<len;i++) //右半屏 { OffSetTmp=(i-12)*5; // DisChar(base,PageAddrP,OffSetTmp+3,str[i],2); } } }