/// <summary>
/// Called when a pin otherwise used for the LCD controller is reserved for another module
/// We have to ensure the LCD controller pins are disabled so they can be reused
/// </summary>
internal static void LCDControllerPinReuse()
{
if (_lcdControllerConfig != null && _lcdControllerConfig.LCDControllerEnabled)
{
DisplayError("ERROR: Cannot use LCD controller pins as IOs simultaneously with using them to drive a display");
}
if (_lcdConfigInUnknownState || LCDControllerEnabled)
{
Mainboard.SetLCD(lcdPinsUsedAsIOs);
LCDControllerEnabled = false;
// need to explicitly reboot in case _lcdConfigInUnknownState
DisplayReboot();
}
if (_lcdControllerConfig == null)
{
_lcdControllerConfig = lcdPinsUsedAsIOs;
}
}
/// <summary>
/// Sets the display configuration. This must be called by all display module constructors (even ones not using LCD displays)
/// </summary>
/// <param name="displayConfig">The display configuration.</param>
protected static void SetLCDConfig(Mainboard.LCDConfiguration displayConfig)
{
if (_numDisplaysConstructed != _numDisplaysConfigured + 1)
{
DisplayError("ERROR IN DISPLAY MODULE DRIVER: All display module constructors must call DisplayModule.SetLCDConfig()");
}
if (displayConfig != Mainboard.LCDConfiguration.HeadlessConfig && (displayConfig.Height == 0 || displayConfig.Width == 0))
{
DisplayError("ERROR IN DISPLAY MODULE DRIVER: LCDConfiguration must specify Height and Width of display");
}
_numDisplaysConfigured++;
_displayModuleToBeConfigured._config = displayConfig;
if (displayConfig.LCDControllerEnabled)
{
if (_lcdControllerConfig != null)
{
if (_lcdControllerConfig == lcdPinsUsedAsIOs)
{
DisplayError("ERROR: Cannot use LCD controller pins as IOs and also use an LCD controller based display");
}
else
{
DisplayError("ERROR: Cannot use more than one LCD controller based display at a time");
}
}
_lcdControllerConfig = displayConfig;
Mainboard.SetLCD(displayConfig);
// this reboots if necessary
LCDControllerEnabled = true;
// known issue: this does not check all settings match (will be fixed in the NETMF 4.2 version)
if (SystemMetrics.ScreenWidth != displayConfig.Width || SystemMetrics.ScreenHeight != displayConfig.Height)
{
DisplayReboot();
}
}
}