public static void CalibrateTouchscreen(VirtualCanvas canvas)
{
var sd = new SDCardReader();
try {
sd.Initialize(SDSocket);
var calibrationDataFilename = @"SD\TouchscreenCalibration.bin";
if (File.Exists(calibrationDataFilename))
{
using (var calibrationDataFile = new FileStream(calibrationDataFilename, FileMode.Open)) {
var context = new BasicTypeDeSerializerContext(calibrationDataFile);
var matrix = new CalibrationMatrix();
matrix.Get(context);
canvas.SetTouchscreenCalibrationMatrix(matrix);
}
}
else
{
using (var calibrationDataFile = new FileStream(calibrationDataFilename, FileMode.Create)) {
var matrix = canvas.GetTouchscreenCalibrationMatrix();
var context = new BasicTypeSerializerContext(calibrationDataFile);
matrix.Put(context);
}
}
} catch (Exception e) {
Debug.Print(e.Message);
Debug.Print("SD Card or file I/O error: manual calibration required.");
canvas.TouchscreenCalibration();
}
sd.Dispose();
}
public static void CalibrateTouchscreen(VirtualCanvas canvas)
{
try {
//var sd = new SDCardReader();
//sd.Initialize(SPI.SPI_module.SPI1,Pins.GPIO_PIN_D10);
var calibrationDataFilename = @"SD\TouchscreenCalibration.bin";
// If the touchscreen calibration data was previously retrieved from the display module and was stored to an SD card,
// the calibration data can be sent to the display module instead of calling TouchscreenCalibration() before using
// the touchscreen for the first time.
if (File.Exists(calibrationDataFilename))
{
using (var calibrationDataFile = new FileStream(calibrationDataFilename, FileMode.Open)) {
var context = new BasicTypeDeSerializerContext(calibrationDataFile);
var matrix = new CalibrationMatrix();
matrix.Get(context);
canvas.SetTouchscreenCalibrationMatrix(matrix);
}
}
else
{
// No pre-existing calibration data, create it...
using (var calibrationDataFile = new FileStream(calibrationDataFilename, FileMode.Create)) {
var matrix = canvas.GetTouchscreenCalibrationMatrix();
var context = new BasicTypeSerializerContext(calibrationDataFile);
matrix.Put(context);
}
}
//sd.Dispose();
} catch (Exception) {
Debug.Print("SD Card or file I/O error: manual calibration required.");
canvas.TouchscreenCalibration();
}
}
public CalibrationMatrix GetTouchscreenCalibrationMatrix() {
BasicTypeSerializer.Put(SendContext, (byte)Command.TouchscreenGetCalibrationMatrix);
Execute();
Receive();
TouchScreenDataType eventType = (TouchScreenDataType)BasicTypeDeSerializer.Get(ReceiveContext);
if (eventType != TouchScreenDataType.CalibrationMatrix) {
throw new ApplicationException("eventType");
}
var matrix = new CalibrationMatrix();
matrix.Get(ReceiveContext);
return matrix;
}