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sparkfun / Qwiic_Ublox_Gps_Py

https://qwiic-ublox-gps-py.readthedocs.io/en/latest/index.html
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How do I modify sampling rate? #23

Closed tensorturtle closed 2 years ago

tensorturtle commented 2 years ago

The ZED-F9P is supposed to be able to output 20hz, but when I run the example 1 python script, I get about 1hz. How can I increase the sampling rate to be as fast as possible?

Thank you

Ino-Ichan commented 2 years ago

You can set the configuration by using u-center. Even when you want to use the module on Linux, you can first set the config with u-center on Windows.

Or, you can alos change the module samping Hz by sending a binary message through serial port. https://github.com/PaulZC/F9P_RAWX_Logger/blob/master/UBX.md

I recommend the first method using u-center.

tensorturtle commented 2 years ago

Thank you @Ino-Ichan ! I will try it out.

tensorturtle commented 2 years ago

Hi @Ino-Ichan I appreciate your guidance, but the Windows application is horribly unstable (crashes every time, and I tried everything to get it to work), and I frankly have no idea how to work with the low level second method. Could you give me an example workflow of how to do it? Thank you

Ino-Ichan commented 2 years ago

Here is the snippet. image

See also 2.3.2 8 Hz navigation rate application

I succeeded in setting 8 Hz, but failed to return to 1 Hz setting by this way... So please be careful. You can get more information about u-center than writing directly through serial port, again I recommend you to find the way that u-center runs stably.

tensorturtle commented 2 years ago

@Ino-Ichan It worked! Thank you very much. I had to give it a few tries, and needed to reconnect with a higher baudrate (460800). It runs at 8Hz now.