I'm having trouble wrapping my head around the MVC stuff.
I'm trying to read and display serial data from an Arduino microcontroller
attached to /dev/ttyUSB0 with limited sucess.
Model: (readSerial.py)
--------------------------------------------------------
import serial
import time
ser = serial.Serial('/dev/ttyUSB0', 57600)
def serialRead():
timeStr = time.strftime("%H:%M:%S")
inLine = timeStr + " : " + ser.readline().strip()
return inLine
-----------------------------------------------------------
View: (index.hml)
----------------------------------------------------------
<script language="javascript">
$(document).ready(function() {
setInterval('serialRead()', 2000);
});
function serialRead() {
var msg = "<p>{{=serialRead()}}</p>";
$('#console').append(msg);
}
</script>
...
<div id='console'></div>
...
---------------------------------------------------------
This appears to work initially, but the repeated calls to readSerial()
return the same values (time & serial line). What am I missing conceptually?
You can see what I'm working on (hopefully) at http://arduino.hopto.org
