DNETCoreGPIO 1.0.1

DNETCoreGPIO

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Functionality is now a library which is called by a simple Console App. Will add the lib to Nuget.

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A .NET Core app to run on the RPi. Works with both Raspian and Win10 IoT-Core unchanged. Exemplifies System.Devices.GPIO and Iot.Device.Bindings Nuget packages. Provided as Visual Studio 2022 project.

Usage

Create a .NET Console app:
Run dotnet new console

Add the library as a Nuget package
Run dotnet add package DNETCoreGPIO --version 1.0.1

Change the 8th line in Program.cs as below:

namespace ConsoleApp
{
	class Program
	{
		static void Main(string[] args)
		{
			DotNetCoreCoreGPIO.Program.Main(args);
		}
	}
}

Build and run the app with the required parameter.

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This is based upon the GitHUb Repository: dotnet/iot<br> Whereas the samples therein (from which this is taken, and extended) use library sources in that repository, this uses the associated Nuget packages.

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Parameters

Run the app with the following parameters)_

1. Led and Button press
2. Temperature with BME280 sensor ..2Do
3. Temperature and Humidity with DHTxx sensor ..2Do
4. Temperature and Humidity with DHT22 sensor using 1-Wire <
5. LED driven by Software PWM.
6. H-Bridge Motor using L293D

Whilst the above run continously or until stopped the following only do a single pass. These are used by TRIGGERcmd 11/12. Relay On/Off 14. Temperature and Humidity with DHT22 sensor using 1-Wire. Get single value and write to /tmp/temperature.txt. See TRIGGERcmd.GetTempDHTxx1Wire()
15. Temperature Pressure and Humidity with BME280. Get single values and write to /tmp/temperature.txt (Coming)

The following control the motor as in 6 but as separate commands.

20. Motor Partial off: Set Fwd and Rev to off
21. Motor Forward
22. Motor Reverse
23. Motor Enable
24. Motor Disable
25. Motor Off (Fwd=Rev=En=off)

Run

Running Led and Button

Pins:

• LED Anode to GPIO17
• Button1 to GPIO4
• Ground (LED Cathode and Button2) (to the one in between. <br>ie Pins 11 7 and 9 resectively.
• Reminder that the LED requires a current limiting resistor.

SW driven LED

As above

DHT22

See circuit diagram under Circuits .<br> Active pin is is GPIO26. I'm using a 10K pullup to that. <br>Some conversions fail, which output as dots. Doesn't work on IOT-Core.

Motor

See circuit diagram in Circuits folder, left part. <br>Pins (L293D pins in brackets):

• Enable GPIO 22 (E1) (L293D Enble 1)
• Reverse GPIO 27 (I1)
• Forward GPIO 17 (I2)

Relay

See circuit diagram in Circuits folder, right part. <br>Pins (L293D pins in brackets):

• On/Off GPIO 19 (E2) (L233D Enable 2)
• Lo (I4)
• Hi (I3)
• I4 and I3 only need to be in opposite state
• Probably want Motor disabled if is low voltage and relay is 12V coil voltage.

BME280

• See circuit diagram rpi-bmp280_i2c.png for 4 pin connections.
• If unit is more than 4 pins see BME280Sampler.Get() for extra pins.
• Also see there wrt enabling I2C on RPi and for checking.

<p> <b>On IoT-Core DO NOT RUN IN POWERSHELL. Can't get user input for Console app in Remote PowerShell.<br> Run an SSH session.</b>Or directlly on the device.<br> I also attached a LED to each output.

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