Update chapter on LDR

19 files changed, 277 insertions, 219 deletions

diff --git a/floss-arduino.OpenModelicad b/floss-arduino.OpenModelicad
index e8e5715..f1038e3 100644
--- a/floss-arduino.OpenModelicad
+++ b/floss-arduino.OpenModelicad
@@ -8,8 +8,8 @@
 \contentsline {section}{\numberline {5.{1}}Read the status of the pushbutton and displaying on the serial monitor}{111}%
 \contentsline {section}{\numberline {5.{2}}Turning the LED on or off depending on the pushbutton}{112}%
 \addvspace {10pt}
-\contentsline {section}{\numberline {6.{1}}Read and display the LDR values}{131}%
-\contentsline {section}{\numberline {6.{2}}Turning the red LED on and off}{132}%
+\contentsline {section}{\numberline {6.{1}}Read and display the LDR values}{132}%
+\contentsline {section}{\numberline {6.{2}}Turning the red LED on and off}{133}%
 \addvspace {10pt}
 \contentsline {section}{\numberline {7.{1}}Turning on LEDs depending on the potentiometer threshold}{146}%
 \addvspace {10pt}
diff --git a/floss-arduino.aux b/floss-arduino.aux
index 59519db..3166b38 100644
--- a/floss-arduino.aux
+++ b/floss-arduino.aux
@@ -719,78 +719,82 @@
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diff --git a/floss-arduino.fdb_latexmk b/floss-arduino.fdb_latexmk
index bc39979..50c9b05 100644
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 \contentsline {section}{\numberline {5.{1}}Read the status of the pushbutton and display it on Command Prompt or the Terminal.}{109}%
 \contentsline {section}{\numberline {5.{2}}Turning the LED on or off depending on the pushbutton}{109}%
 \addvspace {10pt}
-\contentsline {section}{\numberline {6.{1}}Read and display the LDR values}{129}%
-\contentsline {section}{\numberline {6.{2}}Turning the red LED on and off}{130}%
+\contentsline {section}{\numberline {6.{1}}Read and display the LDR values}{130}%
+\contentsline {section}{\numberline {6.{2}}Turning the red LED on and off}{131}%
 \addvspace {10pt}
 \contentsline {section}{\numberline {7.{1}}Turning on LEDs depending on the potentiometer threshold}{145}%
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diff --git a/floss-arduino.lof b/floss-arduino.lof
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 \contentsline {figure}{\numberline {6.5}{\ignorespaces Xcos diagram to read LDR values}}{123}%
-\contentsline {figure}{\numberline {6.6}{\ignorespaces Xcos diagram to read the value of the LDR, which is used to turn the blue LED on or off}}{124}%
+\contentsline {figure}{\numberline {6.6}{\ignorespaces Plot window in Xcos to read LDR values\relax }}{123}%
+\contentsline {figure}{\numberline {6.7}{\ignorespaces Xcos diagram to read the value of the LDR, which is used to turn the blue LED on or off}}{125}%
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 \contentsline {figure}{\numberline {7.1}{\ignorespaces Potentiometer's schematic on the shield\relax }}{136}%
 \contentsline {subfigure}{\numberline {(a)}{\ignorespaces {Pictorial representation of a potentiometer}}}{136}%
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diff --git a/floss-arduino.lot b/floss-arduino.lot
index 7c91890..0176cf4 100644
--- a/floss-arduino.lot
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 \contentsline {codemass}{{Scilab Code}{6.{2}}{}}{122}%
-\contentsline {egmass}{{Exercise}{6.{3}}{}}{126}%
-\contentsline {pymass}{{Python Code}{6.{1}}{}}{126}%
-\contentsline {pymass}{{Python Code}{6.{2}}{}}{127}%
-\contentsline {egmass}{{Exercise}{6.{4}}{}}{129}%
-\contentsline {juliamass}{{Julia Code}{6.{1}}{}}{129}%
-\contentsline {juliamass}{{Julia Code}{6.{2}}{}}{130}%
-\contentsline {OpenModelicamass}{{OpenModelica Code}{6.{1}}{}}{131}%
-\contentsline {OpenModelicamass}{{OpenModelica Code}{6.{2}}{}}{132}%
+\contentsline {egmass}{{Exercise}{6.{3}}{}}{127}%
+\contentsline {pymass}{{Python Code}{6.{1}}{}}{127}%
+\contentsline {pymass}{{Python Code}{6.{2}}{}}{128}%
+\contentsline {egmass}{{Exercise}{6.{4}}{}}{130}%
+\contentsline {juliamass}{{Julia Code}{6.{1}}{}}{130}%
+\contentsline {juliamass}{{Julia Code}{6.{2}}{}}{131}%
+\contentsline {OpenModelicamass}{{OpenModelica Code}{6.{1}}{}}{132}%
+\contentsline {OpenModelicamass}{{OpenModelica Code}{6.{2}}{}}{133}%
 \contentsline {ardmass}{{Arduino Code}{7.{1}}{}}{138}%
 \contentsline {codemass}{{Scilab Code}{7.{1}}{}}{140}%
 \contentsline {pymass}{{Python Code}{7.{1}}{}}{143}%
diff --git a/floss-arduino.toc b/floss-arduino.toc
index ae4fad6..115ee9a 100644
--- a/floss-arduino.toc
+++ b/floss-arduino.toc
@@ -108,13 +108,13 @@
 \contentsline {section}{\numberline {6.5}Interfacing the LDR through Xcos}{122}%
 \contentsline {section}{\numberline {6.6}Interfacing the LDR through Python}{125}%
 \contentsline {subsection}{\numberline {6.6.1}Interfacing the LDR}{125}%
-\contentsline {subsection}{\numberline {6.6.2}Python Code}{126}%
-\contentsline {section}{\numberline {6.7}Interfacing the LDR through Julia}{128}%
-\contentsline {subsection}{\numberline {6.7.1}Interfacing the LDR}{128}%
-\contentsline {subsection}{\numberline {6.7.2}Julia Code}{129}%
-\contentsline {section}{\numberline {6.8}Interfacing the LDR through OpenModelica}{130}%
-\contentsline {subsection}{\numberline {6.8.1}Interfacing the LDR}{130}%
-\contentsline {subsection}{\numberline {6.8.2}OpenModelica Code}{131}%
+\contentsline {subsection}{\numberline {6.6.2}Python Code}{127}%
+\contentsline {section}{\numberline {6.7}Interfacing the LDR through Julia}{129}%
+\contentsline {subsection}{\numberline {6.7.1}Interfacing the LDR}{129}%
+\contentsline {subsection}{\numberline {6.7.2}Julia Code}{130}%
+\contentsline {section}{\numberline {6.8}Interfacing the LDR through OpenModelica}{131}%
+\contentsline {subsection}{\numberline {6.8.1}Interfacing the LDR}{131}%
+\contentsline {subsection}{\numberline {6.8.2}OpenModelica Code}{132}%
 \contentsline {chapter}{\numberline {7}Interfacing a Potentiometer}{135}%
 \contentsline {section}{\numberline {7.1}Preliminaries}{135}%
 \contentsline {section}{\numberline {7.2}Connecting a potentiometer with Arduino Uno\ using a breadboard}{136}%
diff --git a/user-code/ldr/OpenModelica/ldr-led.mo b/user-code/ldr/OpenModelica/ldr-led.mo
index 0dafd1d..d6a1727 100644
--- a/user-code/ldr/OpenModelica/ldr-led.mo
+++ b/user-code/ldr/OpenModelica/ldr-led.mo
@@ -3,32 +3,31 @@ model ldr_led "LED indicating light sensor readings"
   import sComm = Arduino.SerialCommunication.Functions;

   import strm = Modelica.Utilities.Streams;

   Integer ok(fixed = false);

-  Integer analog_in(fixed = false);

+  Integer val(fixed = false);

   Integer digital_out(fixed = false);

   Integer c_ok(fixed = false);

 algorithm

   when initial() then

-    ok := sComm.open_serial(1, 2, 115200) "At port 0 with baudrate of 115200";

+    ok := sComm.open_serial(1, 2, 115200) "At port 2 with baudrate of 115200";

     sComm.delay(2000);

-    if ok <> 0 then

+  end when; 

+  if ok <> 0 then

       strm.print("Unable to open serial port, please check");

-    else

-      for i in 1:500 loop

-        analog_in := sComm.cmd_analog_in(1, 5) "read analog pin 5 (ldr)";

-        if analog_in < 300 then

-          digital_out := sComm.cmd_digital_out(1, 9, 1) "Turn ON LED";

-        else

-          digital_out := sComm.cmd_digital_out(1, 9, 0) "Turn OFF LED";

-        end if;

-        sComm.delay(200);

-      end for;

-    end if;

-  end when;

+  else

+	val := sComm.cmd_analog_in(1, 5) "read analog pin 5 (ldr)";

+	strm.print("LDR Readings: " + String(val));

+	if val < 300 then

+	  digital_out := sComm.cmd_digital_out(1, 11, 1) "Turn ON LED";

+	else

+	  digital_out := sComm.cmd_digital_out(1, 11, 0) "Turn OFF LED";

+	end if;

+	sComm.delay(500);

+  end if;

   //strm.print(String(time));

-  when terminal() then

+  when time >= 10 then

     c_ok := sComm.close_serial(1) "To close the connection safely";

   end when;

   //Run for 500 iterations

   //Setting Threshold value of 300

-  annotation(experiment(StartTime = 0, StopTime = 10, Tolerance = 1e-6, Interval = 0.02));

+  annotation(experiment(StartTime = 0, StopTime = 10, Tolerance = 1e-6, Interval = 0.2));

 end ldr_led;

diff --git a/user-code/ldr/OpenModelica/ldr-read.mo b/user-code/ldr/OpenModelica/ldr-read.mo
index e5ab61f..2debeb4 100644
--- a/user-code/ldr/OpenModelica/ldr-read.mo
+++ b/user-code/ldr/OpenModelica/ldr-read.mo
@@ -3,23 +3,21 @@ model ldr_read "Reading light intensity using ldr"
   import sComm = Arduino.SerialCommunication.Functions;
   import strm = Modelica.Utilities.Streams;
   Integer ok(fixed = false);
-  Integer analog_in(fixed = false);
+  Integer val(fixed = false);
   Integer c_ok(fixed = false);
 algorithm
   when initial() then
-    ok := sComm.open_serial(1, 2, 115200) "At port 0 with baudrate of 115200";
+    ok := sComm.open_serial(1, 2, 115200) "At port 2 with baudrate of 115200";
     sComm.delay(2000);
     if ok <> 0 then
       strm.print("Unable to open serial port, please check");
     else
-      for i in 1:100 loop
-        analog_in := sComm.cmd_analog_in(1, 5) "read analog pin 5 (ldr)";
-        strm.print("LDR Readings at time " + String(time) + " : " + String(analog_in));
+        val := sComm.cmd_analog_in(1, 5) "read analog pin 5 (ldr)";
+        strm.print("LDR Readings: " + String(val));
         sComm.delay(500);
-      end for;
     end if;
   end when;
-  when terminal() then
+  when time >= 10 then
     c_ok := sComm.close_serial(1) "To close the connection safely";
   end when;
   //Run for 10 iterations
diff --git a/user-code/ldr/figures/ldr-led-2.png b/user-code/ldr/figures/ldr-led-2.png
new file mode 100644
index 0000000..350ad73
--- /dev/null
+++ b/user-code/ldr/figures/ldr-led-2.png
diff --git a/user-code/ldr/figures/ldr-led-read-plot.png b/user-code/ldr/figures/ldr-led-read-plot.png
new file mode 100644
index 0000000..8cf8c72
--- /dev/null
+++ b/user-code/ldr/figures/ldr-led-read-plot.png
diff --git a/user-code/ldr/figures/ldr-read-plot.png b/user-code/ldr/figures/ldr-read-plot.png
new file mode 100644
index 0000000..c6a38e4
--- /dev/null
+++ b/user-code/ldr/figures/ldr-read-plot.png
diff --git a/user-code/ldr/ldr.tex b/user-code/ldr/ldr.tex
index 173363d..4e9e320 100644
--- a/user-code/ldr/ldr.tex
+++ b/user-code/ldr/ldr.tex
@@ -335,8 +335,8 @@ can see where to locate the file.
 As discussed in earlier chapters, we start with the initialization

 of the serial port. Next, using {\tt Analog Read} block, we read

 the values of LDR connected on analog pin 5. Next, we use a scope to plot the values 

-coming from this pin. When this Xcos file is simulated, a plot is opened, as shown in 

-Fig. 

+coming from this pin. When this Xcos file is simulated, a plot is opened, 

+as shown in \figref{fig:ldr-read-plot}. 

 

   \begin{figure}

     \centering

@@ -348,6 +348,13 @@ Fig.
     \label{fig:ldr-read}

   \end{figure}

 

+  \begin{figure}

+    \centering

+    \includegraphics[width=\hgfig]{\LocLDRfig/ldr-read-plot.PNG}

+    \caption{Plot window in Xcos to read LDR values}

+    \label{fig:ldr-read-plot}

+  \end{figure}

+

   We will next explain how to set the parameters for this simulation.

   To set value on any block, one needs to right click and open the

   {\tt Block Parameters} or double click.  The values for each block

@@ -376,7 +383,7 @@ Fig.
   During this experiment, we vary the light incident on LDR by using

    light sources and obstacles such as torch light, paper,

   hand (or fingertips), etc. and observe the LDR readings in the plot, as shown in 

-  Fig. We observe that with a constant light source, the LDR output saturates after some time. 

+  \figref{fig:ldr-read-plot}. We observe that with a constant light source, the LDR output saturates after some time. 

 %The output for this experiment is shown in \figref{fig:ldrsatout}.

 

 %   \begin{figure}

@@ -396,7 +403,7 @@ state of red LED in accordance with the LDR values. When the file required for t
 

   \begin{figure}

     \centering

-    \includegraphics[width=\lgfig]{\LocLDRfig/ldr-led.png}

+    \includegraphics[width=\lgfig]{\LocLDRfig/ldr-led-2.png}

 %    \includegraphics[width=\smfig]{\LocLDRfig/ldr-led-xcos.PNG}

     \caption[Xcos diagram to read the value of the LDR, which is used

     to turn the blue LED on or off] {Xcos diagram to read the value of

@@ -411,8 +418,17 @@ state of red LED in accordance with the LDR values. When the file required for t
   {\tt Block Parameters} or double click.  The values for each block

   is tabulated in \tabref{tab:ldr-led}.  In the CSCOPE\_c block, the

   two values correspond to two graphs, one for digital write and other

-  for analog read values.  All other parameters are to be left

-  unchanged.

+  for analog read values. All other parameters are to be left

+  unchanged. When this Xcos file is simulated, a plot is opened, 

+  as shown in \figref{fig:ldr-led-read-plot}. 

+

+  \begin{figure}

+    \centering

+    \includegraphics[width=\hgfig]{\LocLDRfig/ldr-led-read-plot.PNG}

+    \caption{Plot window in Xcos to read LDR values and the state of LED}

+    \label{fig:ldr-led-read-plot}

+  \end{figure}

+

   \begin{table}

     \centering

     \caption{Xcos parameters to read LDR and regulate blue LED}

@@ -618,12 +634,12 @@ The reader should go through the instructions given in
   we begin with importing the two packages: Streams and SerialCommunication followed 

   by setting up the serial port. Then, we read the input coming from analog pin 5 using the 

 following command:

-\lstinputlisting[firstline=16,lastline=16]

+\lstinputlisting[firstline=15,lastline=15]

 {\LocLDROpenModelicacode/ldr-read.mo} Note that the one leg of the LDR on

 the shield is connected to analog pin 5 of \arduino\, 

 as given in \figref{fig:ldrconn}. The read value is displayed 

  by the following command: 

-\lstinputlisting[firstline=17,lastline=17]

+\lstinputlisting[firstline=16,lastline=16]

 {\LocLDROpenModelicacode/ldr-read.mo} where {\tt val} contains

 the LDR values ranging from 0 to 1023. If one does the experiment in a completely dark room, the

 reading will be 0. If on the other hand, a bright light, say for instance the torch

diff --git a/user-code/push/push.tex b/user-code/push/push.tex
index 5e74593..96c6188 100644
--- a/user-code/push/push.tex
+++ b/user-code/push/push.tex
@@ -56,7 +56,7 @@ pressed all the terminals short to complete the circuit, thereby
 allowing the flow of current through the switch. As you might expect,

 there is a limit to the maximum current that could flow through a

 pushbutton. This maximum current is also called the rated current and

-is provided by the manufacturer in the datasheet.  

+is usually provided by the manufacturer in the datasheet.  

 

 \begin{figure}

 \centering

@@ -564,7 +564,7 @@ Please refer to \figref{om-examples-toolbox} to know how to locate the experimen
 \begin{OpenModelicacode}

 \mcaption{Read the status of the pushbutton and displaying on the

   serial monitor}{Read the status of the pushbutton and display it on the output window.  

-  Available at Available at Arduino -> SerialCommunication -> 

+  Available at Arduino -> SerialCommunication -> 

   Examples -> push -> push\_button\_status. }

 \label{OpenModelica:push-100}

 \lstinputlisting{\LocPushOpenModelicacode/push-button-status.mo}