114 lines
2.6 KiB
Python
114 lines
2.6 KiB
Python
#!/usr/bin/python
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import serial
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import time
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import re
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def reader():
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ser = serial.Serial(port='/dev/ttyACM0', baudrate=115200, bytesize=8, timeout=0.1)
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ser.open()
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buf = "ate0\r"
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ser.write(buf)
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dummy_str = ser.read(1000)
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buf = "at+csq\r"
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ser.write(buf)
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gsm_signal_str = ser.read(1000)
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gsm_signal_str = gsm_signal_str.split("\r\n")
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#print gsm_signal_str
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buf = "at$gpsacp\r"
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ser.write(buf)
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gps_str = ser.read(1000)
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gps_str = gps_str.split("\r\n")
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buf = "at$gpsp=1\r"
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ser.write(buf)
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ser.close()
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status = []
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status.append(gsm_signal_str[1])
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status.append(gps_str[1])
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return status
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def parse_csq(status):
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status = re.findall(r'\d+',status)
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signal = int(status[0])
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# actual CSQ signal can be reported between 2 - 30
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# 99 means no signal in any carrier
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if (signal < 1) and (signal > 40):
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return -1
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signal = signal - 2;
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signal = signal * 100 / 28
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return signal
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def parse_gps(status):
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coordinates = []
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status = status.split(",")
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if status[1] == '' or status[2] == '' or status[5] == '' or status[10] == '':
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status[1] = "0000.0000N"
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status[2] = "000.0000W"
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status[5] = "0"
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status[10] = "0"
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# latitude
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degrees = int(status[1][:2])
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minutes = float(status[1][2:-1])
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degrees = degrees + (minutes / 60)
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if status[1][-1:] == "S":
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degrees = - degrees
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coordinates.append(degrees)
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#longitude
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degrees = int(status[2][:3])
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minutes = float(status[2][3:-1])
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degrees = degrees + (minutes / 60)
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if status[2][-1:] == "W":
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degrees = - degrees
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coordinates.append(degrees)
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# fix status
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# valid fix 2 or 3
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if (int(status[5]) < 2):
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status[5] = 0
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else:
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status[5] = 1
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coordinates.append(int(status[5]))
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# sattelite count
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coordinates.append(int(status[10]))
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return coordinates
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def main():
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return_list = []
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status = reader()
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#print status
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gsm_signal = parse_csq(status[0])
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gps_loc = parse_gps(status[1])
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#gps_loc = parse_gps("122330.000,5942.8106N,043.2720W,2.25,338.0,3,0.0,0.02,0.01,240613,04")
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return_list.append(gsm_signal)
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return_list.append(gps_loc)
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#print "GSM signal %d %%" % gsm_signal
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#print "Latitude: %f , longitude: %f , fix: %d , sattelites: %d" % (gps_loc[0],gps_loc[1],gps_loc[2],gps_loc[3])
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return return_list
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if __name__ == '__main__':
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status = main()
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print "GSM signal %d %%" % status[0]
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print "Latitude: %f , longitude: %f , fix: %d , sattelites: %d" % (status[1][0],status[1][1],status[1][2],status[1][3])
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