public static YVoltageProxy FindVoltage(string name)
{
// cases to handle:
// name ="" no matching unknwn
// name ="" unknown exists
// name != "" no matching unknown
// name !="" unknown exists
YVoltage func = null;
YVoltageProxy res = (YVoltageProxy)YFunctionProxy.FindSimilarUnknownFunction("YVoltageProxy");
if (name == "")
{
if (res != null)
{
return(res);
}
res = (YVoltageProxy)YFunctionProxy.FindSimilarKnownFunction("YVoltageProxy");
if (res != null)
{
return(res);
}
func = YVoltage.FirstVoltage();
if (func != null)
{
name = func.get_hardwareId();
if (func.get_userData() != null)
{
return((YVoltageProxy)func.get_userData());
}
}
}
else
{
func = YVoltage.FindVoltage(name);
if (func.get_userData() != null)
{
return((YVoltageProxy)func.get_userData());
}
}
if (res == null)
{
res = new YVoltageProxy(func, name);
}
if (func != null)
{
res.linkToHardware(name);
if (func.isOnline())
{
res.arrival();
}
}
return(res);
}
public override async Task <int> Run()
{
try {
await YAPI.RegisterHub(HubURL);
YVoltage sensor;
YVoltage sensorDC = null;
YVoltage sensorAC = null;
if (Target.ToLower() == "any")
{
// retreive any voltage sensor (can be AC or DC)
sensor = YVoltage.FirstVoltage();
if (sensor == null)
{
WriteLine("No module connected");
return(-1);
}
Target = await(await sensor.get_module()).get_serialNumber();
}
WriteLine("using " + Target);
// we need to retreive both DC and AC voltage from the device.
sensorDC = YVoltage.FindVoltage(Target + ".voltage1");
sensorAC = YVoltage.FindVoltage(Target + ".voltage2");
while (await sensorDC.isOnline())
{
Write("DC: " + await sensorDC.get_currentValue() + " v ");
WriteLine("AC: " + await sensorAC.get_currentValue() + " v ");
await YAPI.Sleep(1000);
}
WriteLine("Module not connected (check identification and USB cable)");
} catch (YAPI_Exception ex) {
WriteLine("error: " + ex.Message);
}
YAPI.FreeAPI();
return(0);
}
private void refreshUI()
{ // draw the dial.
double value = -5;
bool on = false;
if (comboBox1.Enabled)
{ // if a yocto-volt device is connected, lets check it value
YModule m = (YModule)comboBox1.Items[comboBox1.SelectedIndex];
YVoltage DC = YVoltage.FindVoltage(m.get_serialNumber() + ".voltage1");
YVoltage AC = YVoltage.FindVoltage(m.get_serialNumber() + ".voltage2");
if (DC.isOnline())
{ // read DC or AC value, according to ACDCcheckBox
if (ACDCcheckBox.Checked)
{
value = 100 * (AC.get_currentValue() / maxvalue);
}
else
{
value = 100 * (DC.get_currentValue() / maxvalue);
}
on = true;
}
}
// lets use a double buffering technique to avoid flickering
Bitmap BackBuffer = new Bitmap(on ? Properties.Resources.bg : Properties.Resources.bgoff);
Graphics buffer = Graphics.FromImage(BackBuffer);
buffer.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
int DialWidth = BackBuffer.Width;
int DialHeight = BackBuffer.Height;
// add inertia to the needle
needleposition = needleposition + (value - needleposition) / 10;
// make sure une needle won't go off chart
if (needleposition < -5)
{
needleposition = -5;
}
if (needleposition > 105)
{
needleposition = 105;
}
double angle = 3.1416 * (180 - 30 - 120 * (needleposition / 100)) / 180;
int x = Convert.ToInt32(DialWidth / 2 + Math.Cos(angle) * (DialHeight - 15));
int y = Convert.ToInt32(DialHeight * 1.066 - Math.Sin(angle) * (DialHeight - 15));
// draw the needle shadow
Pen shadow = new Pen(Color.FromArgb(16, 0, 0, 00), 3);
Point point1 = new Point(DialWidth / 2 - 3, DialHeight + 3);
Point point2 = new Point(Convert.ToInt32(x) - 3, Convert.ToInt32(y) + 3);
buffer.DrawLine(shadow, point1, point2);
// draw the needle
Pen red = new Pen(on ? Color.FromArgb(255, 255, 0, 00) : Color.FromArgb(255, 64, 0, 00), 3);
point1 = new Point(DialWidth / 2, DialHeight);
point2 = new Point(Convert.ToInt32(x), Convert.ToInt32(y));
buffer.DrawLine(red, point1, point2);
// draw the scale
FontFamily fontFamily = new FontFamily("Arial");
Font font = new Font(fontFamily, DialHeight / 10, FontStyle.Regular, GraphicsUnit.Pixel);
buffer.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
SolidBrush solidBrush = new SolidBrush(Color.FromArgb(255, 20, 20, 20));
for (int i = 0; i <= 10; i++)
{
double dvalue = (maxvalue * i / 10);
angle = 3.1416 * (180 - 30 - 120 * (i / 10.0)) / 180;
string text = dvalue.ToString();
SizeF size = buffer.MeasureString(text, font);
int tx = Convert.ToInt32(DialWidth / 2 + Math.Cos(angle) * DialHeight * 1.01 - size.Width / 2);
int ty = Convert.ToInt32(DialHeight * 1.066 - Math.Sin(angle) * DialHeight * 0.98 - size.Height / 2);
buffer.DrawString(dvalue.ToString(), font, solidBrush, new PointF(tx, ty));
}
Bitmap frame = new Bitmap(Properties.Resources.frame);
buffer.DrawImage(frame, 0, 0);
Graphics Viewable = pictureBox1.CreateGraphics();
// fast rendering
//Viewable.DrawImageUnscaled(BackBuffer, 0, 0);
// slower, but pictureBox can be resized, rendering will still be ok,
// try to respect a 2:1 ratio anyway
Viewable.DrawImage(BackBuffer, new Rectangle(0, 0, pictureBox1.Width, pictureBox1.Height));
Viewable.Dispose();
}