On Jan 23, 5:00 pm, Jon Clements <jon...@googlemail.com> wrote: > 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.
Whoops you are right. the search for the second should be re.search(r'\ $B.*\$.*', self.sensorbbuffer ), for the third re.search(r'\$C.*\$.*', self.sensorcbuffer ) -- http://mail.python.org/mailman/listinfo/python-list
