Simple test not printing data.

[chloe hewitt]

Hi, im a uni student working on a summer project. I need to be able to take data straight from the piksi (without using the console) .

Im using Python 2.7 on Windows , using Spyder. 

I copied/installed the swift-nav libsbp package from github , edited the default so it reads from my USB port , but when i run it it doesnt print the data . Heres the code from simple.py: 

# -*- coding: utf-8 -*-

"""

Created on Wed Aug  8 09:42:31 2018

@author: Simon Rush

"""

from sbp.client.drivers.pyserial_driver import PySerialDriver

from sbp.client.handler import Handler

from sbp.client.framer import Framer

from sbp.client.loggers.json_logger import JSONLogger

from sbp.navigation import SBP_MSG_BASELINE_NED, MsgBaselineNED

import argparse

def main():

    parser = argparse.ArgumentParser(

        description="Swift Navigation SBP Example.")

    parser.add_argument(

        "-p",

        "--port",

        default=['COM3'],

        nargs=1,

        help="specify the serial port to use.")

    args = parser.parse_args()

    print ("im here!")

    # Open a connection to Piksi using the default baud rate (i1Mbaud)

    with PySerialDriver(args.port[0], baud=1000000) as driver:

        with Handler(Framer(driver.read, None, verbose=True)) as source:

            try:

        

                print("before try")

                for msg, metadata in source.filter(SBP_MSG_BASELINE_NED):  #heres the problem

                    print("msg =", msg)

                    # Print out the N, E, D coordinates of the baseline

                    

                    print ("%.4f,%.4f,%.4f") % (msg.n * 1e-3, msg.e * 1e-3,

                                              msg.d * 1e-3)

                    print("done")

                    exit

            except KeyboardInterrupt:

                pass

if __name__ == "__main__":

    main()

ive noticed (using print commands) that it appears to cut out around the for msg line , but it compiles just fine (no errors come up) . its like there's no print line inside that loop at all. 

Im a newbie and would really appreciate some advice , since i need this ASAP to take data for my uni research. Thankyou in advance. 

[jsam...@pobox.com]

Chloe,

You may want to verify the baud rate is correct. I think the original Piksi (v2?) used 1000000. The newer Piksi multi uses a default of 115200. When you run the console, check to see what baud rate it is connecting with (from the initial screen when you start it).

Jeff Sampson 

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