Good python beginners course? Interested in software/hardware side more so.

Associate
Joined
11 Jul 2011
Posts
754
I've been watching a few beginner guides online to python i've got the jist of some of the basics (sort of) But i'd like some examples based on software/hardware things. As of right now i am working on a GPS with a sim868 module i've got it working and parsing the data like i want but thats from scraps of code around the internet. If i am honest i'd like to understand what it is actually calling and doing also.

So i could use some kind of learning based off that to make it more interesting.. Any ideas?



Cheers.

Heres my code if anyone is interested.

Code:
#!/usr/bin/python

import serial, time, pynmea2


#Enable Serial Communication
ser = serial.Serial("/dev/ttyS0", baudrate=9600, timeout=1)
#Transmitting AT Commands to the Modem
#\r indicates the Enter key

ser.flushOutput()
ser.flushInput()

ser.write('ATE'+'\r') #Check to see if modem is responding
str = ser.readline()
print str
time.sleep(5)


ser.write('AT+CGPSOUT=32'+'\r') #Outputs raw NMEA data
str = ser.readline()
print str
time.sleep(3)


ser.write('AT+CGNSPWR=1,AT+CGPSSTATUS=?'+'\r') #Turns on the GPS power

while str.find ("Location Not Fix") > 1:
    print ('Waiting for a fix - ',str)
    ser.flushInput()
    ser.flushOutput()
    time.sleep(15)
    str = ser.readline(100)



ser.write('AT+CGNSTST=1'+'\r') #Starts sending data to UART
str = ser.readline()
print str
time.sleep(5)


#Parsing Raw NMEA data through pynmea2

ser.flushInput()
ser.flushOutput()
def parseGPS(str):
    if str.find("GGA") > 0:
        data = pynmea2.parse(str)
        print "Timestamp: %s -- Lat: %s %s -- Lon: %s %s " % (data.timestamp, data.latitude, data.lat_dir, data.longitude, data.lon_dir)


while True:
    str = ser.readline()
    parseGPS(str)
 
Soldato
Joined
6 Mar 2008
Posts
10,078
Location
Stoke area
Get on Facebook and go over to the Python Programming Language or Python Programming Society groups, PPL is the more active and advanced groups. The admins can be a little, well, ****ish at times (I'm a mod there and an admin on PPS) but generally, if you follow the rules you'll be fine. Both groups are linked.
 
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