diff --git a/samples/README.md b/samples/README.md
index 2d3caee7fe503b85ffdba7862b605a964c11d4ce..a347110cb96574fbf047cca1b6020984da1a9067 100644
--- a/samples/README.md
+++ b/samples/README.md
@@ -12,13 +12,13 @@ The following samples demonstrate various scenarios:
## Libraries
-These samples use the [System.Devices.Gpio](https://dotnet.myget.org/feed/dotnet-corefxlab/package/nuget/System.Devices.Gpio) library. It will be supported on Linux and Windows IoT Core. At present, the library works on Linux. The library is currently in early preview, based on [source in dotnet/corefxlab](https://github.com/dotnet/corefxlab/tree/master/src/System.Devices.Gpio).
+These samples use the [System.Device.Gpio](https://dotnet.myget.org/feed/dotnet-corefxlab/package/nuget/System.Devices.Gpio) library. It will be supported on Linux and Windows IoT Core. At present, the library works on Linux. The library is currently in early preview, based on [source in dotnet/corefxlab](https://github.com/dotnet/corefxlab/tree/master/src/System.Devices.Gpio).
There are many libraries that are important beyond GPIO, I2C and related fundamental protocols. We are working on a plan where the .NET Team and the community can work together to build up a shared repository of implementations.
## Breadboard layouts
-The samples expect the device pins to be connected in particular way to function, typically on a breadboard. Each example includes a [Fritzing](http://fritzing.org/home/) diagram of the required breadboard layout, such as the following one (taken from the [More blinking lights](led-more-blinking-lights/README.md) sample).
+The samples expect the device pins to be connected in particular way to function, typically on a breadboard. Each example includes a [Fritzing](http://fritzing.org/home/) diagram of the required breadboard layout, such as the following one (taken from the [More blinking lights](led-more-blinking-lights/README.md) sample).
diff --git a/samples/led-more-blinking-lights/nuget.config b/samples/led-more-blinking-lights/nuget.config
deleted file mode 100644
index e2f430168fca7db6d611416b08071582efec16bc..0000000000000000000000000000000000000000
--- a/samples/led-more-blinking-lights/nuget.config
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-
-
-
-
-
-
diff --git a/samples/led-blink/nuget.config b/samples/nuget.config
similarity index 100%
rename from samples/led-blink/nuget.config
rename to samples/nuget.config
diff --git a/samples/trimpot/Mcp3008.cs b/samples/trimpot/Mcp3008.cs
deleted file mode 100644
index f4e0a8ab1af797e12d54cd50044c1d5a13da3123..0000000000000000000000000000000000000000
--- a/samples/trimpot/Mcp3008.cs
+++ /dev/null
@@ -1,114 +0,0 @@
-using System;
-using System.Devices.Gpio;
-using System.Devices.Spi;
-public class Mcp3008
-{
-
- private SpiDevice _spiDevice;
- private GpioPin _CLK;
- private GpioPin _MISO;
- private GpioPin _MOSI;
- private GpioPin _CS;
-
-
- public Mcp3008(SpiDevice spiDevice)
- {
- _spiDevice = spiDevice;
- }
-
- public Mcp3008(GpioController controller, int CLK, int MISO, int MOSI, int CS)
- {
- _CLK = controller.OpenPin(CLK, PinMode.Output);
- _MISO = controller.OpenPin(MISO, PinMode.Input);
- _MOSI = controller.OpenPin(MOSI, PinMode.Output);
- _CS = controller.OpenPin(CS, PinMode.Output);
- }
-
- public int Read(int adc_channel)
- {
- if (adc_channel < 0 && adc_channel > 7)
- {
- throw new ArgumentException("ADC channel must be within 0-7 range.");
- }
-
- if (_spiDevice != null)
- {
- return ReadSpi(adc_channel);
- }
- else
- {
- return ReadGpio(adc_channel);
- }
- }
-
- private int ReadGpio(int adc_channel)
- {
- //port of https://gist.github.com/ladyada/3151375
-
- while (true)
- {
- var commandout = 0;
- var trim_pot = 0;
-
-
- _CS.Write(PinValue.High);
- _CLK.Write(PinValue.Low);
- _CS.Write(PinValue.Low);
-
- commandout |= 0x18;
- commandout <<= 3;
-
- for (var i = 0; i < 5; i++)
- {
- if ((commandout & 0x80) > 0)
- {
- _MOSI.Write(PinValue.High);
- }
- else
- {
- _MOSI.Write(PinValue.Low);
- }
-
- commandout <<= 1;
- _CLK.Write(PinValue.High);
- _CLK.Write(PinValue.Low);
- }
-
- for (var i = 0; i < 12; i++)
- {
- _CLK.Write(PinValue.High);
- _CLK.Write(PinValue.Low);
- trim_pot <<= 1;
-
- if (_MISO.Read() == PinValue.High)
- {
- trim_pot |= 0x1;
- }
- }
-
- _CS.Write(PinValue.High);
-
- trim_pot >>= 1;
- //var pot_adjust = Math.Abs(trim_pot - last_read);
- return trim_pot;
- }
- }
-
- private int ReadSpi(int adc_channel)
- {
- // ported code from:
- // https://github.com/adafruit/Adafruit_Python_MCP3008/blob/master/Adafruit_MCP3008/MCP3008.py
-
- int command = 0b11 << 6; //Start bit, single channel read
- command |= (adc_channel & 0x07) << 3; // Channel number (in 3 bits)
- var input = new Byte[] { (Byte)command, 0, 0 };
- var output = new Byte[3];
- _spiDevice.TransferFullDuplex(input, output);
-
- var result = (output[0] & 0x01) << 9;
- result |= (output[1] & 0xFF) << 1;
- result |= (output[2] & 0x80) >> 7;
- result = result & 0x3FF;
- return result;
- }
-}
\ No newline at end of file
diff --git a/samples/trimpot/Program.cs b/samples/trimpot/Program.cs
index 513fd891c6b5677aab8bf2e63b081fef220c0954..9ee010c922c84aa3abbb191fa25b34003883788f 100644
--- a/samples/trimpot/Program.cs
+++ b/samples/trimpot/Program.cs
@@ -2,6 +2,7 @@
using System.Devices.Gpio;
using System.Devices.Spi;
using System.Threading;
+using Iot.Device;
namespace trimpot
{
diff --git a/samples/trimpot/nuget.config b/samples/trimpot/nuget.config
deleted file mode 100644
index 5a5e169638205c956503a4b1fc068d91cbf35e17..0000000000000000000000000000000000000000
--- a/samples/trimpot/nuget.config
+++ /dev/null
@@ -1,8 +0,0 @@
-
-
-
-
-
-
-
-
\ No newline at end of file
diff --git a/samples/trimpot/trimpot.csproj b/samples/trimpot/trimpot.csproj
index 349cea9623b75e6047178ed26934a1fee549e7ca..56966880af906456b18200ce2a286f2c39a0c898 100644
--- a/samples/trimpot/trimpot.csproj
+++ b/samples/trimpot/trimpot.csproj
@@ -3,11 +3,14 @@
Exe
netcoreapp2.1
- led_pwm
-
+
+
+
+
+
diff --git a/src/Mcp3008/Mcp3008.cs b/src/Mcp3008/Mcp3008.cs
deleted file mode 100644
index 461ba3f7b671bdacf69d3892afd1f1f6ee92d299..0000000000000000000000000000000000000000
--- a/src/Mcp3008/Mcp3008.cs
+++ /dev/null
@@ -1,115 +0,0 @@
-using System;
-using System.Devices.Gpio;
-using System.Devices.Spi;
-
-public class Mcp3008
-{
-
- private SpiDevice _spiDevice;
- private GpioPin _CLK;
- private GpioPin _MISO;
- private GpioPin _MOSI;
- private GpioPin _CS;
-
-
- public Mcp3008(SpiDevice spiDevice)
- {
- _spiDevice = spiDevice;
- }
-
- public Mcp3008(GpioController controller, int CLK, int MISO, int MOSI, int CS)
- {
- _CLK = controller.OpenPin(CLK, PinMode.Output);
- _MISO = controller.OpenPin(MISO, PinMode.Input);
- _MOSI = controller.OpenPin(MOSI, PinMode.Output);
- _CS = controller.OpenPin(CS, PinMode.Output);
- }
-
- public int Read(int adc_channel)
- {
- if (adc_channel < 0 && adc_channel > 7)
- {
- throw new ArgumentException("ADC channel must be within 0-7 range.");
- }
-
- if (_spiDevice != null)
- {
- return ReadSpi(adc_channel);
- }
- else
- {
- return ReadGpio(adc_channel);
- }
- }
-
- private int ReadGpio(int adc_channel)
- {
- //port of https://gist.github.com/ladyada/3151375
-
- while (true)
- {
- var commandout = 0;
- var trim_pot = 0;
-
-
- _CS.Write(PinValue.High);
- _CLK.Write(PinValue.Low);
- _CS.Write(PinValue.Low);
-
- commandout |= 0x18;
- commandout <<= 3;
-
- for (var i = 0; i < 5; i++)
- {
- if ((commandout & 0x80) > 0)
- {
- _MOSI.Write(PinValue.High);
- }
- else
- {
- _MOSI.Write(PinValue.Low);
- }
-
- commandout <<= 1;
- _CLK.Write(PinValue.High);
- _CLK.Write(PinValue.Low);
- }
-
- for (var i = 0; i < 12; i++)
- {
- _CLK.Write(PinValue.High);
- _CLK.Write(PinValue.Low);
- trim_pot <<= 1;
-
- if (_MISO.Read() == PinValue.High)
- {
- trim_pot |= 0x1;
- }
- }
-
- _CS.Write(PinValue.High);
-
- trim_pot >>= 1;
- //var pot_adjust = Math.Abs(trim_pot - last_read);
- return trim_pot;
- }
- }
-
- private int ReadSpi(int adc_channel)
- {
- // ported code from:
- // https://github.com/adafruit/Adafruit_Python_MCP3008/blob/master/Adafruit_MCP3008/MCP3008.py
-
- int command = 0b11 << 6; //Start bit, single channel read
- command |= (adc_channel & 0x07) << 3; // Channel number (in 3 bits)
- var input = new Byte[] { (Byte)command, 0, 0 };
- var output = new Byte[3];
- _spiDevice.TransferFullDuplex(input, output);
-
- var result = (output[0] & 0x01) << 9;
- result |= (output[1] & 0xFF) << 1;
- result |= (output[2] & 0x80) >> 7;
- result = result & 0x3FF;
- return result;
- }
-}
\ No newline at end of file
diff --git a/src/devices/Mcp3008/Mcp3008.cs b/src/devices/Mcp3008/Mcp3008.cs
new file mode 100644
index 0000000000000000000000000000000000000000..c05db688d2cc322ede1e3bee16b983d31225010f
--- /dev/null
+++ b/src/devices/Mcp3008/Mcp3008.cs
@@ -0,0 +1,114 @@
+using System;
+using System.Devices.Gpio;
+using System.Devices.Spi;
+
+namespace Iot.Device
+{
+public class Mcp3008
+ {
+
+ private SpiDevice _spiDevice;
+ private GpioPin _CLK;
+ private GpioPin _MISO;
+ private GpioPin _MOSI;
+ private GpioPin _CS;
+
+
+ public Mcp3008(SpiDevice spiDevice)
+ {
+ _spiDevice = spiDevice;
+ }
+
+ public Mcp3008(GpioController controller, int CLK, int MISO, int MOSI, int CS)
+ {
+ _CLK = controller.OpenPin(CLK, PinMode.Output);
+ _MISO = controller.OpenPin(MISO, PinMode.Input);
+ _MOSI = controller.OpenPin(MOSI, PinMode.Output);
+ _CS = controller.OpenPin(CS, PinMode.Output);
+ }
+
+ public int Read(int adc_channel)
+ {
+ if (adc_channel < 0 && adc_channel > 7)
+ {
+ throw new ArgumentException("ADC channel must be within 0-7 range.");
+ }
+
+ if (_spiDevice != null)
+ {
+ return ReadSpi(adc_channel);
+ }
+ else
+ {
+ return ReadGpio(adc_channel);
+ }
+ }
+
+ // port of https://gist.github.com/ladyada/3151375
+ private int ReadGpio(int adc_channel)
+ {
+ while (true)
+ {
+ var commandout = 0;
+ var trim_pot = 0;
+
+ _CS.Write(PinValue.High);
+ _CLK.Write(PinValue.Low);
+ _CS.Write(PinValue.Low);
+
+ commandout |= 0x18;
+ commandout <<= 3;
+
+ for (var i = 0; i < 5; i++)
+ {
+ if ((commandout & 0x80) > 0)
+ {
+ _MOSI.Write(PinValue.High);
+ }
+ else
+ {
+ _MOSI.Write(PinValue.Low);
+ }
+
+ commandout <<= 1;
+ _CLK.Write(PinValue.High);
+ _CLK.Write(PinValue.Low);
+ }
+
+ for (var i = 0; i < 12; i++)
+ {
+ _CLK.Write(PinValue.High);
+ _CLK.Write(PinValue.Low);
+ trim_pot <<= 1;
+
+ if (_MISO.Read() == PinValue.High)
+ {
+ trim_pot |= 0x1;
+ }
+ }
+
+ _CS.Write(PinValue.High);
+
+ trim_pot >>= 1;
+ return trim_pot;
+ }
+ }
+
+ // ported code from:
+ // https://github.com/adafruit/Adafruit_Python_MCP3008/blob/master/Adafruit_MCP3008/MCP3008.py
+ private int ReadSpi(int adc_channel)
+ {
+ int command = 0b11 << 6; //Start bit, single channel read
+ command |= (adc_channel & 0x07) << 3; // Channel number (in 3 bits)
+ var input = new Byte[] { (Byte)command, 0, 0 };
+ var output = new Byte[3];
+ _spiDevice.TransferFullDuplex(input, output);
+
+ var result = (output[0] & 0x01) << 9;
+ result |= (output[1] & 0xFF) << 1;
+ result |= (output[2] & 0x80) >> 7;
+ result = result & 0x3FF;
+ return result;
+ }
+ }
+}
diff --git a/src/devices/Mcp3008/Mcp3008.csproj b/src/devices/Mcp3008/Mcp3008.csproj
new file mode 100644
index 0000000000000000000000000000000000000000..e8f08ed5366129be5ffc10c4cb4d70d0cb6caef1
--- /dev/null
+++ b/src/devices/Mcp3008/Mcp3008.csproj
@@ -0,0 +1,11 @@
+
+
+
+ netcoreapp2.1
+
+
+
+
+
+
+
diff --git a/src/devices/Mcp3008/README.md b/src/devices/Mcp3008/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..7454f54c7860728a4f11d516194b07af004121e7
--- /dev/null
+++ b/src/devices/Mcp3008/README.md
@@ -0,0 +1,9 @@
+# Using MCP3008
+
+Some devices like the Rasperry Pi cannot read analog values directly so rely on [analog to digital converters](https://en.wikipedia.org/wiki/Analog-to-digital_converter), like the [MCP3008 ADC](https://www.adafruit.com/product/856). The MCP3008 supports the SPI interface. The 10-bit chip can be accessed as an [SPI device](https://en.wikipedia.org/wiki/Serial_Peripheral_Interface) or manually via raw GPIO pins.
+
+ You can use [Mcp3008.cs](Mcp3008.cs) in your project to access analog devices. [Reading Analog Input from a Potentiometer](../../samples/trimpot/README.md) demonstrates a concrete example using this class.
+
+The following fritzing diagram illustrates one way to wire up the Mcp3008, with a Raspberry Pi and a potentiometer.
+
+
\ No newline at end of file