Reading from Flywoo GOKU GM10 Pro V3 GPS w/compass (FPV GPS module)

[irudnyts]

Hey! I am trying to use pyubx2 to stream from Flywoo GOKU GM10. From the official documentation it uses UBLOX protocol, but when I stream from it, the unknown protocol is streamed:

from serial import Serial
from pyubx2 import UBXReader, UBX_PROTOCOL

with Serial('/dev/ttyS0', 57600, timeout=1) as stream:
    ubr = UBXReader(stream, protfilter=UBX_PROTOCOL)
    while True:
        raw, msg = ubr.read()
        if msg:
            print(msg)

Unknown protocol header b'\xb5\x18'.
Unknown protocol header b'$9'.
Unknown protocol header b'$9'.
Unknown protocol header b'$\x00'.
Unknown protocol header b'$8'.
Unknown protocol header b'$\x01'

[semuadmin]

Hi @irudnyts

According to the available documentation, the GOKU GM10 uses a u-blox M10050 GNSS module, but apparently you need a specific firmware version BF4.3X for UBX protocol support. I am unclear if this means that older firmware versions (e.g. BF4.2.X) do not support UBX at all, or simply that - like most u-blox GNSS modules - they are configured to output the NMEA protocol rather than UBX by default.

I'm not in a position to comment on Flywoo's proprietary software or firmware configurations - you'd need to speak to the manufacturer or supplier directly (or ask on the Flywoo Q&A forum) - and without seeing an example of the actual raw datastream I can only speculate, but here are a few observations & suggestions:

1. Your code is not quite correct. To stream continuously with pyubx2, use the iterator construct (for ... in ...) as illustrated in the README:

from serial import Serial

from pyubx2 import NMEA_PROTOCOL, UBX_PROTOCOL, UBXReader

PORT = "/dev/ttyS0"
BAUD = 57600 # should this be 115200?
TIMEOUT = 3

with Serial(PORT, BAUD, timeout=TIMEOUT) as stream:
    ubr = UBXReader(stream, protfilter=NMEA_PROTOCOL | UBX_PROTOCOL)
    for raw, parsed in ubr:
        if raw is not None:
            print(parsed)

2. Are you sure 57600 is the correct baud rate? According to the Flywoo documentation, the default baud rate is 115200.
3. Try increasing the timeout value to 3 seconds.
4. Try running the code without the protfilter argument in the first instance (or with a filter which includes both NMEA and UBX protocols). This will allow you to see if the device is outputting NMEA rather than, or as well as, UBX.
5. Assuming your device's firmware version does indeed support UBX, you can use pyubx2's UBX_Message.config_set helper function to enable the relevant UBX NAV message types by sending the appropriate sequence of UBX CFG-VALSET commands e.g. (this assumes /dev/ttyS0 corresponds to the device's UART1 port):

from serial import Serial

from pyubx2 import UBXMessage, TXN_NONE, SET_LAYER_RAM

PORT = "/dev/ttyS0"
BAUD = 57600
TIMEOUT = 3

cfgdata = [
    ("CFG_MSGOUT_UBX_NAV_PVT_UART1", 1),
    ("CFG_MSGOUT_UBX_NAV_SAT_UART1", 1),
    ("CFG_MSGOUT_UBX_NAV_DOP_UART1", 1),
]
cmd = UBXMessage.config_set(SET_LAYER_RAM, TXN_NONE, cfgdata)
print(cmd)

with Serial(PORT, BAUD, timeout=TIMEOUT) as stream:
    stream.write(cmd.serialize())

Refer to the ublox M10050 interface specification for further details, or consult the manufacturer or supplier.

Hope this helps.