RTK-GPS with freerunner: decimeter-level accuracy with Free Software

[RANJAN]

The raw-monitor screenshot:
http://imgur.com/Ork4o

On Thu, Nov 10, 2011 at 12:54 AM, RANJAN <infibit at gmail.com> wrote:

> Dear Timo,
>
> This is what I wrote from you code:
>
> 1)Sets NMEA OFF and only UBX on
> 2)Enable-raw
> 3)raw-rate-monitor
>
> *import struct
> import calendar
> import os
> import gobject
> import logging
> import sys
> import socket
> import time
>
> loop = gobject.MainLoop()
>
> def callback(ty, packet):
>     print("callback %s" % repr([ty, packet]))
>     # setting NMEA OFF AND ONLY UBX
>     if ty == "CFG-PRT":
>         packet[1]["In_proto_mask"] = 1
>         packet[1]["Out_proto_mask"] = 1
>         t.send("CFG-PRT", 20, packet)
>     elif ty == "ACK-ACK":
>         loop.quit()
>     return True
>
> #raw rate monitor
> def callback(ty, *args):
>     global prev_t
>     if ty == "RXM-RAW":
>         t = time.time()
>         d = t - prev_t
>         print("%f %f" % (d, 1.0/d))
>         prev_t = t
>
> assert len(sys.argv) == 2
> t = ubx.Parser(callback)
> t.send("CFG-PRT", 0, [])
>
> #enabling raw
>
> t = ubx.Parser(callback)
> t.send("UPD-DOWNL", 8 + 1, {"StartAddr" : 0x6c14, "Flags" : 0, "B0" : 255})
> loop.run()*
>
>
> Please advice.
> Ranjan
>
> On Thu, Nov 1
> 0, 2011 at 12:25 AM, RANJAN <infibit at gmail.com> wrote:
>
>>
>>
>>> GPSD? You can't use gpsd here. You can just read the raw data from
>>> serial port using cat or netcat.
>>
>>
>> I do this to send NMEA data over serial by listening into the gps daemon.
>>
>> import socket
>> import sys
>> import serial
>> host, port = 'localhost', 2947
>> sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
>> sock.connect((host, port))
>> sock.send('r')
>> file = open("gpstextlog.txt","w")
>> while True:
>>     reply = sock.recv(16384)
>>     file.write(reply)
>>
>> What shall I do now? Shall I send the UBX data over serial without using
>> the GPS parser or should I send just RAW data after parsing it on the
>> phone? (My last mail tell you more about these doubts).
>>
>> Ranjan
>>
>>
>
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