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model ldr_led "LED indicating light sensor readings"
extends Modelica.Icons.Example;
import sComm = Arduino.SerialCommunication.Functions;
import strm = Modelica.Utilities.Streams;
Integer ok(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 2 with baudrate of 115200";
sComm.delay(2000);
end when;
if ok <> 0 then
strm.print("Unable to open serial port, please check");
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 time >= 10 then
c_ok := sComm.close_serial(1) "To close the connection safely";
end when;
//Setting Threshold value of 300
annotation(
experiment(StartTime = 0, StopTime = 10, Tolerance = 1e-6, Interval = 0.2));
end ldr_led;
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