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#include "lcd_1602.h"
static void delay_us(uint32_t delay){
delay*=32;
while(delay--);
}
static void lcd_send_4bit(uint8_t data) {
if(data & 0x10) d4(1); else d4(0);
if(data & 0x20) d5(1); else d5(0);
if(data & 0x40) d6(1); else d6(0);
if(data & 0x80) d7(1); else d7(0);
}
static void lcd_send(int8_t rs,uint8_t data){
// rs : 1=data | 2=command
// rw : 0=write | 1=read
// en : 1=senddata | 0=donothing
rs(rs);
rw(0);
lcd_send_4bit(data); //MSB
en(1);
delay_us(100);
en(0);
lcd_send_4bit(data<<4); //LSB
en(1);
delay_us(100);
en(0);
}
void lcd_cmd(uint8_t command){
lcd_send(1,command);
}
void lcd_data(char c){
lcd_send(1,(uint8_t)c);
}
void lcd_init(void){
//bl(1);
// lcd_send(0x22);
// 4 bit initialisation
lcd_send(0,0x20); // 4bit mode
HAL_Delay(10);
// Display initialisation
lcd_send(0,0x28); // Function set --> DL=0 (4 bit mode), N = 1 (2 line display) F = 0 (5x8 characters)
HAL_Delay(1);
lcd_send(0,0x08); //Display on/off control --> D=0,C=0, B=0 ---> display off
HAL_Delay(1);
lcd_send(0,0x01); // clear display
HAL_Delay(2);
lcd_send(0,0x06); //Entry mode set --> I/D = 1 (increment cursor) & S = 0 (no shift)
HAL_Delay(1);
lcd_send(0,0x0C); //Display on/off control --> D = 1, C and B = 0. (Cursor and blink, last two bits)
HAL_Delay(2);
}
void lcd_clr(void){
lcd_send(0,0x01);
HAL_Delay(2);
}
void lcd_gotoxy(char x, char y){
lcd_send(0,0x80+x+(y*0x40));
HAL_Delay(2);
}
void lcd_puts(char *text){
while (*text) lcd_data (*text++);
}
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