void
hd44780_cursor(int x, int y, int cursor, int blink)
{
uint8_t p = x + (y ? 40 : 0);
// printf("{%d,%d,%d,%d -> %d}",x,y,cursor,blink,p);
hd44780_cmd(HD44780_CMD_DC(1,cursor,blink));
hd44780_cmd(HD44780_CMD_DDRAM(p));
}
void hd44780_init() {
data[0] = 0x00 | backlight;
data[1] = 0x00 | backlight;
// Reset all
I2C_Master_BufferWrite(I2C1, data, 1, Polling, hd44780_address << 1);
hd44780_cmd(0x03);
delay_us(5000);
hd44780_cmd(0x03);
delay_us(100);
hd44780_cmd(0x02);
delay_us(200);
hd44780_cmd(0x28); // 4 bit mode
hd44780_cmd(0x06); // set direction of cursor to right
hd44780_cmd(0x01); // clear display, go to 0x0
hd44780_cmd(0x0E); // turn on display, set solid cursor
hd44780_cmd(0x0C); // turn on display, set invisiblecursor
hd44780_cgram_write(0, (u8[]){0,10,31,31,14,4,0,0});
hd44780_cgram_write(1, (u8[]){0,10,21,17,10,4,0,0});
hd44780_cmd(0x01); // clear display, go to 0x0
}
void
hd44780_reset()
{
/* force 8-bit interface: */
hd44780_cmd(0x33); /* special HD44780_CMD_FUN, two nibbles 0x03 */
hd44780_cmd(0x33); /* special HD44780_CMD_FUN, two nibbles 0x03 */
hd44780_cmd(HD44780_CMD_FUN(1,1,0)); /* 8bit, 2line, 5x7 font */
hd44780_cmd(HD44780_CMD_MOD(1,0)); /* cursor moves left to right */
hd44780_cmd(HD44780_CMD_DC(1,0,0)); /* display on, cursor off, blink off */
hd44780_clear();
}
void hd44780_go_to_line(u8 line) {
switch(line) {
case 0:
hd44780_cmd(0x80);
break;
case 1:
hd44780_cmd(0xC0);
break;
case 2:
hd44780_cmd(0x94);
break;
case 3:
hd44780_cmd(0xD4);
break;
default:
break;
}
}
void hd44780_cgram_write(u8 pos, u8 data_[8]) {
if (pos > 7) {
return;
}
pos = 64 + pos * 8;
hd44780_cmd(pos);
u8 i;
for (i = 0; i < 8; ++i) {
hd44780_send(data_[i], true);
}
}
void hd44780_init(TIM_TypeDef *t) {
timer = t;
// Setup clock
setup_delay_timer(timer);
hd44780_data[0] = 0x00 | backlight;
hd44780_data[1] = 0x00 | backlight;
// Init I2C
I2C_LowLevel_Init(I2C1);
// Reset all
I2C_Master_BufferWrite(I2C1, hd44780_data, 1, Polling, hd44780_address << 1);
hd44780_cmd(0x03);
delay_us(timer, 5000);
hd44780_cmd(0x03);
delay_us(timer, 100);
hd44780_cmd(HD44780_MOVE_TO_HOME);
delay_us(timer, 200);
hd44780_cmd(0x28); // 4 bit mode
hd44780_cmd(0x06); // set direction of cursor to right
hd44780_cmd(HD44780_DISPLAY_ERASE); // clear display, go to 0x0
// hd44780_cmd(0x0E); // turn on display, set solid cursor
hd44780_cmd(HD44780_DISPLAY_SHOW); // turn on display, set invisiblecursor
// u8 arr[] = {0,10,31,31,14,4,0,0};
// u8 arr2[]= {0,10,21,17,10,4,0,0};
// hd44780_cgram_write(0, arr);
// hd44780_cgram_write(1, arr2);
hd44780_cmd(0x01); // clear display, go to 0x0
// hd44780_backlight(initial_backlight);
// hd44780_print("Linia 0");
// hd44780_go_to_line(1);
// hd44780_print("Linia 1");
// hd44780_go_to_line(2);
// hd44780_print("Linia 2");
// hd44780_go_to_line(3);
// hd44780_print("Linia 3");
// hd44780_char(0);
// hd44780_char(1);
}
void hd44780_init(struct dev_hd44780_ctx *a_disp) {
uint8_t x = HD44780_DATALINES;
GPIO_CONFIGURE_AS_OUTPUT(&a_disp->rs);
GPIO_CONFIGURE_AS_OUTPUT(&a_disp->e);
#if HD44780_USE_RW_LINE == 1
GPIO_CONFIGURE_AS_OUTPUT(&a_disp->rw);
GPIO_SET_LOW(&a_disp->rw);
#endif
// set control lines low
GPIO_SET_LOW(&a_disp->rs);
GPIO_SET_LOW(&a_disp->e);
// set all data lines high
while (x--) {
GPIO_CONFIGURE_AS_OUTPUT(&a_disp->data[x]);
GPIO_SET_HIGH(&a_disp->data[x]);
}
// wait for the display
_delay_ms(HD44780_RESET_DELAY_MS);
#if HD44780_8BIT_MODE == 1
GPIO_SET_LOW(&a_disp->data[7]);
GPIO_SET_LOW(&a_disp->data[6]);
#else
GPIO_SET_LOW(&a_disp->data[3]);
GPIO_SET_LOW(&a_disp->data[2]);
#endif
_hd44780_data_latch(a_disp);
_delay_ms(5);
_hd44780_data_latch(a_disp);
_delay_us(100);
#if HD44780_8BIT_MODE == 0
GPIO_SET_LOW(&a_disp->data[0]);
#endif
_hd44780_data_latch(a_disp);
// wait for a while before sending the "real" commands
_delay_us(10);
// set font and display lines
#if HD44780_8BIT_MODE == 1
hd44780_cmd(a_disp, HD44780_CMD_FUNCTION_SET(1, (a_disp->lines >= 2), a_disp->font));
#else
hd44780_cmd(a_disp, HD44780_CMD_FUNCTION_SET(0, (a_disp->lines >= 2), a_disp->font));
#endif
// display on, cursor off, blink off
hd44780_cmd(a_disp, HD44780_CMD_DISPLAY_CONTROL(1, 0, 0));
// clear the screen
hd44780_clrscr(a_disp);
// set entry mode
hd44780_cmd(a_disp, HD44780_CMD_ENTRY_MODE(1, 0));
}
void hd44780_go_to(u8 row, u8 col) {
hd44780_go_to_line(row);
u8 i = 0;
while (i++ < col)
hd44780_cmd(HD44780_MOVE_CURSOR_RIGHT);
}
void hd44780_go_to(u8 row, u8 col) {
hd44780_go_to_line(row);
u8 i = 0;
while (i++ < col)
hd44780_cmd(0x14);
}
// Added simple function
void hd44780_clear(){
hd44780_cmd(0x01); // clear display, go to 0x0
}
void
hd44780_cgram(uint8_t i){
hd44780_cmd(HD44780_CMD_CGRAM(i));
}
void
hd44780_home()
{
hd44780_cmd(HD44780_CMD_HOME);
}
void
hd44780_clear()
{
hd44780_cmd(HD44780_CMD_CLR);
hd44780_cmd(HD44780_CMD_HOME);
}
