ready to localize anchors reporting error 9

[jhau]

I have set up the 4 anchors at the four corners of a rectangular room (7m x 2m). Positions of the anchors is measured by a long tape ruler. In the ready to localization example, i use manual configuration to setup the coordinates of the anchors. (I tried auto calibration but the measurement is very inaccurate). Also have followed the instruction to add them in the right order. When i start the processing sketch, the initial position of the tracker looks roughly correct, but when I start moving the tracker, it never seem to move very far from the initial position, also some movement direction is wrong, for example, i move up the y axis but it shows moving down on the y axis. Even when i move from the middle of the room (initial position of the tracker) to the x=0, y=0 anchor, the tracker never seems to move very far from the initial position.

Also all 4 anchors are showing error 9 (when running the remote device check from https://www.pozyx.io/Documentation/Tutorials/basics), i have also used the UWB configurator to try to put all the devices on the same channel.

Is error 9 causing the problem? If so how can I fix the errors?

Has anyone got the localization example to work?

[petr9janousek]

I have a similar issue, and so I will try to provide more info. In my case all anchors are reporting ERR#0x09, which means "Flash memory is corrupted or invalid". Anchors are therefore unable to save UWBSettings and after each power cycle, new discovery process is needed. I have tried updating firmware, that doesn't help. Anchors are still reporting. However after adding Devices and setting UWBSettings manually (using scripts from "useful" folder on this repo help with that), positioning works just fine. To my knowledge my flash wasn't overwritten more than e.g. 20 times, so it shouldn't be a case of too many write-cycles.

Tag with id 0x6a13 Who am i: 0x43 Firmware version: v2.2 Hardware version: v1.2 Selftest result: 0b110000 Error: 0x09 Error message: ERROR 0x09: Flash memory is corrupted or invalid UWB settings: CH: 5, bitrate: 110 kbit/s, prf: 64 MHz, plen: 1024 symbols, gain: 11.5 dB Total saved registers: 0 - Positioning registers: - Filter: False - Algorithm & Dimension: False - Ranging protocol: False - Height: False - UWB registers: - Channel: False - Bitrate & PRF: False - Preamble length: False - Gain: False Devices for positioning: