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Diffstat (limited to 'MDD_HIL Practice_Cases/Serial_read_write.mo')
| -rwxr-xr-x | MDD_HIL Practice_Cases/Serial_read_write.mo | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/MDD_HIL Practice_Cases/Serial_read_write.mo b/MDD_HIL Practice_Cases/Serial_read_write.mo new file mode 100755 index 0000000..f7878a6 --- /dev/null +++ b/MDD_HIL Practice_Cases/Serial_read_write.mo @@ -0,0 +1,58 @@ +class Serial_read_write + import OpenModelica.Scripting.*; + import Modelica_DeviceDrivers; + Modelica_DeviceDrivers.Blocks.OperatingSystem.SynchronizeRealtime synchronizeRealtime annotation( + Placement(transformation(extent = {{62, 50}, {82, 70}}))); + Modelica.Blocks.Math.RealToInteger realToInteger1 annotation( + Placement(visible = true, transformation(origin = {-68, 26}, extent = {{-10, -10}, {10, 10}}, rotation = -90))); + Modelica_DeviceDrivers.Blocks.Packaging.SerialPackager.AddInteger addInteger1(nu = 1) annotation( + Placement(visible = true, transformation(origin = {-36, -4}, extent = {{-10, -10}, {10, 10}}, rotation = 0))); + Modelica.Blocks.Sources.Sine sine1(amplitude = 100, freqHz = 0.5, offset = 100, startTime = 0) annotation( + Placement(visible = true, transformation(origin = {-68, 66}, extent = {{-10, -10}, {10, 10}}, rotation = -90))); + Modelica_DeviceDrivers.Blocks.Packaging.SerialPackager.Packager packager(sampleTime = 0.005, useBackwardPropagatedBufferSize = true, useBackwardSampleTimePropagation = false) annotation( + Placement(visible = true, transformation(extent = {{-44, 30}, {-24, 50}}, rotation = 0))); + Modelica_DeviceDrivers.Blocks.Communication.SerialPortSend serialSend(Serial_Port = "/dev/ttyACM0", autoBufferSize = true, baud = Modelica_DeviceDrivers.Utilities.Types.SerialBaudRate.B115200, sampleTime = 0.002) annotation( + Placement(visible = true, transformation(origin = {-36, -58}, extent = {{-10, -10}, {10, 10}}, rotation = -90))); + Modelica_DeviceDrivers.Blocks.Communication.SerialPortReceive serialReceive(Serial_Port = "/dev/ttyACM0", autoBufferSize = true, baud = Modelica_DeviceDrivers.Utilities.Types.SerialBaudRate.B115200, enableExternalTrigger = false, sampleTime = 0.002) annotation( + Placement(visible = true, transformation(origin = {18, 54}, extent = {{-10, -10}, {10, 10}}, rotation = -90))); + Modelica_DeviceDrivers.Blocks.Packaging.SerialPackager.GetInteger getInteger annotation( + Placement(visible = true, transformation(extent = {{6, -66}, {26, -46}}, rotation = 0))); + Modelica_DeviceDrivers.Blocks.Packaging.SerialPackager.UnpackUnsignedInteger unpackInt(nu = 1, width = 8) annotation( + Placement(visible = true, transformation(origin = {16, 4}, extent = {{-10, -10}, {10, 10}}, rotation = 0))); +equation +alarm(1); + connect(unpackInt.pkgOut[1], getInteger.pkgIn) annotation( + Line(points = {{16, -6}, {18, -6}, {18, -46}, {16, -46}}, thickness = 0.5)); + connect(serialReceive.pkgOut, unpackInt.pkgIn) annotation( + Line(points = {{18, 44}, {16, 44}, {16, 14}, {16, 14}, {16, 14}})); + connect(packager.pkgOut, addInteger1.pkgIn) annotation( + Line(points = {{-34, 29}, {-34, 17.5}, {-36, 17.5}, {-36, 6}})); + connect(addInteger1.pkgOut[1], serialSend.pkgIn) annotation( + Line(points = {{-36, -14}, {-36, -47}}, thickness = 0.5)); + connect(sine1.y, realToInteger1.u) annotation( + Line(points = {{-68, 55}, {-68, 38}}, color = {0, 0, 127})); + connect(realToInteger1.y, addInteger1.u[1]) annotation( + Line(points = {{-68, 16}, {-68, 16}, {-68, -4}, {-48, -4}, {-48, -4}}, color = {255, 127, 0})); + annotation( + Documentation(info = "<html> +<h4><span style=\"color:#008000\">Example for serial port support</span></h4> +<h4><span style=\"color:#008000\">Hardware setup</span></h4> +<p>In order to execute the example an appropriate physical connection between the sending and the receiving serial port needs to be established, (e.g., by using a null modem cable between the two serial port interfaces <a href=\"http://en.wikipedia.org/wiki/Null_modem\">http://en.wikipedia.org/wiki/Null_modem</a>). In fact a minimal mull modem with lines (<code>TxD</code>, <code>Rxd</code> and <code>GND</code>) is sufficient. Next, the <code>SerialPortReceive</code> and <code>SerialPortSend</code> blocks parameters must be updated with the device filenames corresponding to the connected physical serial ports. Now, the example can be executed.</p> +<h4><span style=\"color:#008000\">Alternative: Using virtual serial port devices for test purposes</span></h4> +<p>To run the example without serial port hardware, it is possible to resort to virtual serial ports. Possible ways of doing this are described in the following.</p> +<p>On Linux, make sure that <i>socat</i> is installed, e.g., on an Ubuntu machine do</p> +<pre>sudo aptitude install socat</pre> +<p>Now open a console and create two virtual serial port interfaces using socat:</p> +<pre>socat -d -d pty,raw,echo=0 pty,raw,echo=0</pre> +<p>The socat program will print the device file names that it created. The output will resemble the following:</p> +<pre>2013/11/24 15:20:21 socat[3262] N PTY is /dev/pts/1 +2013/11/24 15:20:21 socat[3262] N PTY is /dev/pts/3 +2013/11/24 15:20:21 socat[3262] N starting data transfer loop with FDs [3,3] and [5,5]</pre> +<p>Use them in the Send and Receive block. E.g., for the output above you would use <code>"/dev/pts/1"</code> in <code>SerialPortReceive</code> and <code>"/dev/pts/3"</code> in <code>SerialPortSend</code>.</p> +<p>You may have also have a look at the discussion about virtual serial port devices on stackoverflow<a href=\"http://stackoverflow.com/questions/52187/virtual-serial-port-for-linux\">http://stackoverflow.com/questions/52187/virtual-serial-port-for-linux</a>.</p> +<p>On Windows, make sure that the null modem emulator <i>com0com</i> is installed.</p> +<p>Start the Setup for <i>com0com</i> and check the device names of the created virtual port pair. E.g. you could type <code>"COM6"</code> in <code>SerialPortReceive</code> and <code>"COM7"</code> in <code>SerialPortSend</code>.</p> +</html>"), + uses(Modelica(version = "3.2.2"), Modelica_DeviceDrivers(version = "1.5.0"))); + +end Serial_read_write;
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