//This function updates the backlight, applies screen strings if they have
//changed, and applies menu hints. Up to now, variables topLCDLine and
//bottomLCDLine have been set to the desired strings. This keeps the LCD from
//being cleared and set excessively (which causes ugly blinking).
void outputLCD()
{
updateBacklight();
if (changedString(topLCDLine))
{
clearLCDLine(0);
displayLCDCenteredString(0,topLCDLine.curr);
}
if (changedString(bottomLCDLine))
{
clearLCDLine(1);
displayLCDCenteredString(1,bottomLCDLine.curr);
}
#ifdef MENU_WRAP //Wrap
if (sysState.curr != AUTONOMOUS && sysError==ERR_NONE)
{
displayLCDString(0,0, "<");
displayLCDString(0,15,">");
}
#else //No wrap
if (sysState.curr != AUTONOMOUS && sysError==ERR_NONE)
{
if (menuItemIndex>0) displayLCDString(0,0, "<"); //If not at the first item, show prev arrow
if (menuItemIndex<(int)M_NO_ITEMS-1) displayLCDString(0,15,">"); //If not at the last item, show next arrow
}
#endif
setLastString(&topLCDLine);
setLastString(&bottomLCDLine);
}
// This will turn the backlight off
void ShiftLCD::backlightOff(void) {
_backlight &= ~LCD_BL_PIN;
updateBacklight();
}
// This will turn the backlight on
void ShiftLCD::backlightOn(void) {
_backlight = LCD_BL_PIN;
updateBacklight();
}
