Hello, i am creating this topic hoping to find someone that can give me ideas to solve an absurd problem that occured to me after solving multiple issues with my LG90P breakout board in conjonction with a BleSMiRF v2.
When i bought my units a few months ago, with the intent to use them with my phone and both SWmaps and Qfield for general purpose on survey projects (forestry/archeology), i already had (predictable) issues with device recognition, wich i easily solved by adjusting the output baudrate of my bluetooth device to the by default one of the LG290P (460800 b/s) through a serial terminal. I updated the LG290P with the latest firmware thanks to Quectel QGNSS, operation that solved both the absence of GST sentences to receive error estimation, and the “not enough decimal printed” problem to show error values under a centimeter. After that, my devices worked perfectly, exept for one thing: when connected through BT error estimation, wether vertical or horizontal, was not functional (Fig.1).
Fig.1
So i hooked a USB/serial and BT/serial terminal on my phone to check on the output of my devices. To my surprise, although i had GST messages flowing through my USB/serial terminal (Fig.2), it was not the case for the BT/serial terminal (Fig.3).
Fig.2
Fig.3
To be sure there was no problem with the hardware i checked all i could, and remade the soldering of the header for the BlueSMiRF on the breakout board, with flux this time, ensuring there was no potential shortage between Rx and Tx.
And there i am, with data sent (presumably) from the GNSS chip directly to the reception port of my BT device, where a bunch the infomations carried by the signal is lost in the process. I have absolutly no idea on what cause the issue and i have next to no experience in this field to further tinker .
If you’ve encoutered a similar situation or have a lead on that matter, i’d be glad to hear what you can tell me.
Thank you for the read, have a good evening.