On Jan 23, 9:48 pm, "M.Pekala" <mcdpek...@gmail.com> wrote: > Hello, I am having some trouble with a serial stream on a project I am > working on. I have an external board that is attached to a set of > sensors. The board polls the sensors, filters them, formats the > values, and sends the formatted values over a serial bus. The serial > stream comes out like $A1234$$B-10$$C987$, where "$A.*$" is a sensor > value, "$B.*$" is a sensor value, "$C.*$" is a sensor value, ect... > > When one sensor is running my python script grabs the data just fine, > removes the formatting, and throws it into a text control box. However > when 3 or more sensors are running, I get output like the following: > > Sensor 1: 373 > Sensor 2: 112$$M-160$G373 > Sensor 3: 763$$A892$ > > I am fairly certain this means that my code is running too slow to > catch all the '$' markers. Below is the snippet of code I believe is > the cause of this problem... > > def OnSerialRead(self, event): > text = event.data > self.sensorabuffer = self.sensorabuffer + text > self.sensorbbuffer = self.sensorbbuffer + text > self.sensorcbuffer = self.sensorcbuffer + text > > if sensoraenable: > sensorresult = re.search(r'\$A.*\$.*', self.sensorabuffer ) > if sensorresult: > s = sensorresult.group(0) > s = s[2:-1] > if self.sensor_enable_chkbox.GetValue(): > self.SensorAValue = s > self.sensorabuffer = '' > > if sensorbenable: > sensorresult = re.search(r'\$A.*\$.*', self.sensorbenable) > if sensorresult: > s = sensorresult.group(0) > s = s[2:-1] > if self.sensor_enable_chkbox.GetValue(): > self.SensorBValue = s > self.sensorbenable= '' > > if sensorcenable: > sensorresult = re.search(r'\$A.*\$.*', self.sensorcenable) > if sensorresult: > s = sensorresult.group(0) > s = s[2:-1] > if self.sensor_enable_chkbox.GetValue(): > self.SensorCValue = s > self.sensorcenable= '' > > self.DisplaySensorReadings() > > I think that regex is too slow for this operation, but I'm uncertain > of another method in python that could be faster. A little help would > be appreciated.
You sure that's your code? Your re.search()'s are all the same. -- http://mail.python.org/mailman/listinfo/python-list