void GoTo(unsigned char x, unsigned char y){
switch (y) {
case 0:
lcd_cmd_write(SET_DRAM_ADDR+x);
lcd_wait(WAIT_15m);
break;
case 1:
lcd_cmd_write(SET_DRAM_ADDR+line_1+x);
lcd_wait(WAIT_15m);
break;
case 2:
lcd_cmd_write(SET_DRAM_ADDR+line_2+x);
lcd_wait(WAIT_15m);
break;
case 3:
lcd_cmd_write(SET_DRAM_ADDR+line_3+x);
lcd_wait(WAIT_15m);
break;
default:
break;
}
}
//ghi font luu trong chuoi *str vao vung cgram co dia chi 0-7
void lcd_make_font(char code *str,sttchar){ // sao chep font toi cgram, sttchar la stt ma ascii (ty 0 den 7)
unsigned char i;
if(sttchar>7)i=0x40;else i=sttchar*8+0x40; // tinh toa do bat dau tu 0
lcd_wait();
lcd_writecmd(i);// di chuyen con tro toi vung cgram
for (i=0; i<7; i++){ //khong ghi dlieu 8 vi dlieu nay la lua chon con tro
lcd_wait();
lcd_write_byte(str[i]); //ghi tung dlieu vao cgram
}
}
unsigned int getkeyab(unsigned int dmin,unsigned int dmax,unsigned char display){ //bien x dung xac nhan dat timeout, nhap va0 so >=a <=b
//unsigned char arrbuff[33];//so toi da 65536 la 5 chu + 1 null cua chuoi =6
unsigned char i,strmax,strmin,sobam;
unsigned long digi=0,temp,toadotruyen=lcd_wait();
while(getbell()!=offbell);
strmax=digi2text(lcd_buff,10,dmax)-1;//so chu so cua dmax, bi loi truyen tham so sai
strmin=digi2text(lcd_buff,10,dmin)-1;
if(display&minmax_){
sprintf(lcd_buff,"%u->%u",dmin,dmax);
lcd_putsxy(lcd_buff,0,lines-1);
lcd_goto(toadotruyen);
}
if(display&PAXX_)for(i=0;i<strmax+1;i++){lcd_putchar('X');}
lcd_goto(toadotruyen);
for(i=(strmax);i!=0xFF;i--){
//while(ir_in());
thulaichuso:
delay_ms(100);
while((temp=ir_getkeytimeout(offbell&(~diir_),0))>9);//tranh tran so ma thoi
sobam=(unsigned char)temp+0x30;
temp=digi+temp*xpowy(10,i);
if(strmin<i){if(temp>dmax)goto thulaichuso;}
else {if((temp<dmin)||(temp>dmax)) goto thulaichuso;}
if(display&phimtm_)lcd_putchar(sobam);
//xongthem1chuso:
digi=temp;
setbell(binhthuong);
}
setbell(bellsucsesful);//da nhap thanh cong
while(getbell()!=offbell);
return digi;
}
void lcd_inst_write(uint8_t data) {
lcd_wait();
write(); inst();
LCD_DATA_PORT = data;
send();
}
void lcd_init() // Works like a constructor
{
// Power on delay
lcd_direction |= 0xfc; // set port a as output
lcd_wait( 20000 ); // Power on wait
lcd_wait( 20000 );
lcd_port &= ~((1<<lcd_E) | (1<<lcd_RS)); // EN=0, RS=0
// lcd_port &= ~(1<<lcd_RW); // Set RW = 0 in case it is connected
lcd_nibble_transfer(SET_FUNCTION+IN8_BIT);
//lcd_wait(longdelay ); // wait 24 ms
_delay_ms(24);
lcd_nibble_transfer(SET_FUNCTION+IN8_BIT);
//lcd_wait(longdelay);
_delay_ms(24);
lcd_nibble_transfer(SET_FUNCTION+IN8_BIT);
//lcd_wait(longdelay);
_delay_ms(24);
lcd_nibble_transfer(SET_FUNCTION);
// lcd_wait(longdelay);
_delay_ms(24);
lcd_cmd_write(SET_FUNCTION+LN2_BIT); // Function set: 0x28 2 lines
// lcd_wait(WAIT_15m); // Wait 39 uS
_delay_ms(2);
lcd_cmd_write(SET_DISPLAY); //display off
//lcd_wait(WAIT_15m);
_delay_ms(2);
lcd_cmd_write(CLR_DISPLAY); // Display clear: 0x01 clear data
// lcd_wait(WAIT_15m); // 1.53 mS
_delay_ms(2);
lcd_cmd_write(SET_ENTRY_MODE+INC_BIT); // +INC_BIT // Entry mode set: shift cursor 1 position to right
// lcd_wait(WAIT_15m);
_delay_ms(2);
lcd_cmd_write(SET_DISPLAY+ON_BIT+CUR_BIT+BLK_BIT); //+CUR_BIT+BLK_BIT); Display ON/OFF control: 0x0f
// lcd_wait(WAIT_15m); // Wait 39 uS // 1.53 mS
//lcd_wait(WAIT_15m); // 1.53 mS
_delay_ms(2);
createCustomFont();
_delay_ms(2);
lcd_cmd_write(RTN_HOME);
} // end lcd_init()
void lcd_data_write(uint8_t data) {
lcd_wait();
write(); data();
LCD_DATA_PORT = data;
send();
}
// viet du lieu (lenh) toi lcd neu lenh xao man thi tre 2ms (lenh nay thuc hien `1.64ms)
void lcd_writecmd(unsigned char chr){
lcd_wait(); //RS=0; RW=0
BIT_DDR_RS_LCD=huongra;
BIT_OUT_RS_LCD=0; //GHI LENH
lcd_write_nibble(chr>>4);
lcd_write_nibble(chr);
// if((chr==1)||(chr==3))delay_ms(3);
}
// viet du lieu (ky tu) toi lcd, ham nay da su ly xuong dong tu dong
void lcd_write_byte(char chr){
unsigned char x,FlagGanCuoiDong=0,ToaDoChuyenDong;
x=lcd_wait(); //WDR
#if(lines==4)
switch (x){
case cuoidong0: ToaDoChuyenDong=daudong1,FlagGanCuoiDong=1;
break;
case cuoidong1: ToaDoChuyenDong=daudong2,FlagGanCuoiDong=1;
break;
case cuoidong2: ToaDoChuyenDong=daudong3,FlagGanCuoiDong=1;
break;
case cuoidong3: ToaDoChuyenDong=daudong0,FlagGanCuoiDong=1;
break;
default:break;
}
#elif (lines==2)
switch (x){
case cuoidong0: ToaDoChuyenDong=daudong1;FlagGanCuoiDong=1;
break;
case cuoidong1: ToaDoChuyenDong=daudong0;FlagGanCuoiDong=1;
break;
default:break;
}
#elif (lines==1)
switch (x){
case cuoidong0: ToaDoChuyenDong=daudong0;FlagGanCuoiDong=1;
break;
default: break;
}
#endif
if(chr=='\n'){
#if lines==2
if(x>=daudong1)x=daudong0;
else if(x>=daudong0)x=daudong1;
#elif lines==4
if ((x>=daudong3))x=daudong0;
else if((x>=daudong1))x=daudong2;
else if((x>=daudong2))x=daudong3;
else if((x>=daudong0))x=daudong1;
#elif lines==1
x=daudong0;
#endif
lcd_writecmd(0x80|x);
return;
}else{
BIT_DDR_RS_LCD=huongra;
BIT_OUT_RS_LCD=1; //GHI DU LIEU
lcd_write_nibble(chr>>4);
lcd_write_nibble(chr);
if((FlagGanCuoiDong)){lcd_writecmd(0x80+ToaDoChuyenDong);}
}
}
static inline void lcd_command(unsigned char c)
{
/*
* "Clear Display" and "Return Home" commands
* take more time to complete than others.
*/
int i = ((c == HD44780_CLR_DISPLAY || c == HD44780_RET_HOME) ? 30 : 1);
writew(c | HD44780_INSTR, base_addr);
do lcd_wait(); while(--i);
}
void mips_display_message(const char *str)
{
static unsigned int __iomem *display;
char ch;
int i;
if (unlikely(display == NULL))
display = ioremap_nocache(LCD_DISPLAY_POS_BASE,
(8 * sizeof(int)));
for (i = 0; i < 16; i++) {
if (*str)
ch = *str++;
else
ch = ' ';
lcd_wait(display);
__raw_writel((LCD_SETDDRAM | i),
(display + DISPLAY_LCDINSTRUCTION));
lcd_wait(display);
__raw_writel(ch, display + DISPLAY_LCDDATA);
}
}
//! write a zero-terminated ASCII string to the display
void LCDPutString(char *str) {
char c,index=0;
for (; (c = *str) != 0; str++){
if((c=='\r') || c=='\n');
else
lcd_data_write(c);
index++;
if (index>=20) {
lcd_cmd_write(SET_DRAM_ADDR+line_3);
lcd_wait(WAIT_15m);
index=0;
}
}
}
void lcd_data(char datas)
{
/******************
* LCD写数据函数
*
* 参数：数据(字符格式的数字、字符等)
* 返回：空
*
* 描述：
＊ EA=0 ==> RS=EN=0,RW=1 ==> 输出 ==>EN＝0，EA＝1
*******************/
EA=0;
lcd_wait();
LCD_RS=1;
LCD_RW=0;
LCD_EN=1;
LCD_DATA=datas;
LCD_EN=0;
EA=1;
return;
}
void lcd_cmd(char cmd)
{
/******************
* LCD写指令函数
*
* 参数：指令代码
* 返回：空
*
* 描述：
＊ EA=0 ==> RS=RW=0,EN=1 ==> 输出 ==>EN＝0，EA＝1
*******************/
EA=0;
lcd_wait();
LCD_RS=0;
LCD_RW=0;
LCD_EN=1;
LCD_DATA=cmd;
LCD_EN=0;
EA=1;
return;
}
static inline void lcd_writechar(unsigned char c)
{
writew(c | HD44780_WR_DATA, base_addr);
lcd_wait();
}
//clear the display
void lcdClear(void) {
lcd_cmd_write(CLR_DISPLAY);
lcd_wait(WAIT_15m);
lcd_cmd_write(CLR_DISPLAY+RTN_HOME);
lcd_wait(WAIT_15m);
}
