private async void Analogs_Click(object sender, EventArgs e)
{
List <IAnalog> analogs = new List <IAnalog>();
List <Analog> an = await data.GetAnalogs(1);
if (analogs.Count() > 0)
{
textBox1.Text += string.Format("GetAnalogs() {0} analogs retrieved \r\n", analogs.Count());
}
foreach (Analog a in an)
{
if (a.HardwareType == HardwareTypes.SPI)
{
SPIAnalog analog = new SPIAnalog(a.Id, a.Address);
analog.Multiplier = a.Multiplier;
analog.Units = a.Units;
analog.Name = a.Name;
analog.Description = a.Description;
analogs.Add(analog);
}
}
foreach (IAnalog a in analogs)
{
textBox1.Text += string.Format("Id:{0} name:{1} description:{2} Address:{3} Value:{4} Multiplier:{5} Units;{6} \r\n", a.Id, a.Name, a.Description, a.Address, a.Value, a.Multiplier, a.Units);
}
}
public IAnalog CreateAnalog(Analog a)
{
log.DebugFormat("InterfaceService.CreateAnalog() {0}", a.Name);
//Address property will be SPI:CHANNEL, eg 0:1
//The following code parses out the address to get SPI and CHANNEL
string[] parts = a.Address.Split(':');
int spiId = Convert.ToInt32(parts[0]);
string channel = parts[1];
if (spiId > Spis.Count - 1)
{
throw new Exception(string.Format("Configuration error: unknown SPI Id {0}", spiId));
}
ConnectorPin spiClock = GetGPIOPin(string.Format("P1Pin{0}", 23));
ConnectorPin spiCs = GetGPIOPin(string.Format("P1Pin{0}", 24));
ConnectorPin spiMISO = GetGPIOPin(string.Format("P1Pin{0}", 21));
ConnectorPin spiMOSI = GetGPIOPin(string.Format("P1Pin{0}", 19));
SpiDevice spi = new SpiDevice(spiClock, spiCs, spiMISO, spiMOSI, gpioDriver);
Spis[spiId].Hardware = spi;
if (spi == null)
{
throw new Exception(string.Format("Configuration error: unknown SPI Id {0}", spiId));
}
//log.DebugFormat("CreateAnalog(): SPI:{0} Channel:{1}", spiId, channel);
//log.DebugFormat("Spi {0}", Spis[0].Data.Name);
log.DebugFormat("Analog name {0}", a.Name);
IInputAnalogPin pin;
switch (channel)
{
case "0":
pin = spi.Connection.In(Mcp3008Channel.Channel0);
break;
case "1":
pin = spi.Connection.In(Mcp3008Channel.Channel1);
break;
case "2":
pin = spi.Connection.In(Mcp3008Channel.Channel2);
break;
case "3":
pin = spi.Connection.In(Mcp3008Channel.Channel3);
break;
case "4":
pin = spi.Connection.In(Mcp3008Channel.Channel4);
break;
case "5":
pin = spi.Connection.In(Mcp3008Channel.Channel5);
break;
case "6":
pin = spi.Connection.In(Mcp3008Channel.Channel6);
break;
case "7":
pin = spi.Connection.In(Mcp3008Channel.Channel7);
break;
default:
throw new Exception(string.Format("Configuration error: unknown analog input channel {0}", channel));
}
//ElectricPotential referenceVoltage = ElectricPotential.FromVolts(3.3);
//var driver = new MemoryGpioConnectionDriver(); //GpioConnectionSettings.DefaultDriver;
//Mcp3008SpiConnection _spi = new Mcp3008SpiConnection(
// driver.Out(GetGPIOPin("P1Pin23")),
// driver.Out(GetGPIOPin("P1Pin24")),
// driver.In(GetGPIOPin("P1Pin21")),
// driver.Out(GetGPIOPin("P1Pin19")));
//IInputAnalogPin inputPin = spi.Connection.In(Mcp3008Channel.Channel0);
//var sample = referenceVoltage * (double)pin.Read().Relative;
//log.DebugFormat("CreateAnalog() sample: {0} mV", sample.Millivolts);
SPIAnalog ana = new SPIAnalog(pin, a.Name, a.Multiplier, a.Units);
ana.Sample();
log.DebugFormat("CreateAnalog() sample: {0} mV", ana.Value);
//ana.Value;
return(ana);
}
