void hd44780_init(void) {
while (buttons_active) {}
hd44780_active=1;
controlLEDs_enable(0);
/* clear control bits */
hd44780_EN_Off();
hd44780_RS_Off();
// hd44780_RW_Off();
/* sets the configured values - can be set again only after reset */
hd44780_function( HD44780_CONF_BUS, HD44780_CONF_LINES, HD44780_CONF_FONT, HD44780_FONT_TABLE);
/* turn the display off with no cursor or blinking */
hd44780_display( HD44780_DISP_OFF, HD44780_DISP_CURS_OFF, HD44780_DISP_BLINK_OFF);
/* clear the display */
hd44780_clear();
/* addr increment, shift cursor */
hd44780_entry( HD44780_ENTRY_SHIFT_CURS, HD44780_ENTRY_ADDR_INC);
hd44780_load_symbol(0x0, symbol_menu_pointer);
hd44780_load_symbol(0x8, symbol_check);
/*cursor to zero position*/
hd44780_ddram_addr(0);
hd44780_active=0;
controlLEDs_enable(1);
}
void hd44780_goto_noblock(uint8_t line, uint8_t position) {
while (buttons_active) {}
hd44780_active = 1;
controlLEDs_enable(0);
hd44780_ddram_addr((0x40 * (line - 1)) + (position - 1));
hd44780_active = 0;
controlLEDs_enable(1);
}
void hd44780_write(uint8_t data) {
while (buttons_active){
}
hd44780_active=1;
controlLEDs_enable(0);
/* set the data bits */
uint16_t dataportValue = HD44780_DATAPORT->IDR;
HD44780_DATAPORT->ODR = (dataportValue & 0xFF00) + data; //In the current project the display uses PE0-PE7 GPIO, so it is possible to switch them by one command
/*
if (data & 0x01) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT0);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT0);
}
if (data & 0x02) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT1);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT1);
}
if (data & 0x04) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT2);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT2);
}
if (data & 0x08) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT3);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT3);
}
if (data & 0x10) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT4);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT4);
}
if (data & 0x20) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT5);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT5);
}
if (data & 0x40) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT6);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT6);
}
if (data & 0x80) {
GPIO_SetBits(HD44780_DATAPORT, HD44780_DATABIT7);
} else {
GPIO_ResetBits(HD44780_DATAPORT, HD44780_DATABIT7);
}
*/
/* tell the lcd that we have a command to read in */hd44780_EN_On();
/* wait long enough so that the lcd can see the command */hd44780_EN_high_delay();
/* reset the ce line */hd44780_EN_Off();
hd44780_init_end_delay();
hd44780_active=0;
controlLEDs_enable(1);
}
void controlLED2on(uint8_t on){
controlLED2_state=on;
controlLEDs_enable(controlLED1_state || controlLED2_state);
}