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Refactor the lcd_print_custom() method

This commit is contained in:
Alex Voinea 2023-01-24 12:22:51 +01:00
parent 90222747f2
commit 7e0ab44d09
1 changed files with 17 additions and 14 deletions
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31
Firmware/lcd.cpp
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@ -835,24 +835,27 @@ const CustomCharacter Font[] PROGMEM = {
};
static void lcd_print_custom(uint8_t c) {
if (lcd_custom_index >= 8) { //ran out of custom characters. Use the alternate character.
lcd_send(pgm_read_byte(&Font[c - 0x80].alternate), HIGH);
lcd_ddram_address++; // no need for preventing ddram overflow
return;
}
uint8_t charToSend;
// check if we already have the character in the lcd memory
for (uint8_t i = 0; i < 8; i++) {
if (lcd_custom_characters[i] == c) {
lcd_send(i, HIGH);
lcd_ddram_address++; // no need for preventing ddram overflow
return;
// send the found custom character id
charToSend = i;
goto sendChar;
}
}
// character not in memory. Add it
lcd_createChar_P(lcd_custom_index, Font[c - 0x80].data);
lcd_custom_characters[lcd_custom_index] = c;
lcd_send(lcd_custom_index, HIGH);
// character not in memory.
if (lcd_custom_index >= 8) { //ran out of custom characters. Use the alternate character.
charToSend = pgm_read_byte(&Font[c - 0x80].alternate);
}
else { //create a new custom character and send it
lcd_createChar_P(lcd_custom_index, Font[c - 0x80].data);
lcd_custom_characters[lcd_custom_index] = c;
charToSend = lcd_custom_index++;
}
sendChar:
lcd_send(charToSend, HIGH);
lcd_ddram_address++; // no need for preventing ddram overflow
lcd_custom_index++;
}