Posts made by eblasband

Can anyone help me understand what is happening with the following errors? I cant run python or gpio commands.

BusyBox v1.28.3 () built-in shell (ash)

   ____       _             ____
  / __ \___  (_)__  ___    / __ \__ _  ___ ___ ____ _
 / /_/ / _ \/ / _ \/ _ \  / /_/ /  ' \/ -_) _ `/ _ `/
 \____/_//_/_/\___/_//_/  \____/_/_/_/\__/\_, /\_,_/
 W H A T  W I L L  Y O U  I N V E N T ?  /___/
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   Ω-ware: 0.3.2 b246
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Your JFFS2-partition seems full and overlayfs is mounted read-only.
Please try to remove files from /overlay/upper/... and reboot!
root@Omega-19E5:~# python3 ./testing/spi/spi-test.py
Trace/breakpoint trap
root@Omega-19E5:~# fast-gpio set 11 0
-ash: fast-gpio: I/O error

I have tried removing some files from /overlay/upper/ but am not completely sure what is safe to remove. I have also tried booting into failsafe mode and done firstboot & restart then went through the whole setup process with no luck.

My dev process involves developing in pycharm on local machine and transferring files to omega to be ran which was working fine, but maybe continually transferring filled up the memory?

Any help would be great.

@Pavel-Negrobov did you ever find good resources or get it to work?? I have a similar project although with another SoC instead of STM

In my project my goal is to use the nrf52832 BLE SoC to handle BLE (in Slave mode if applicable) connections and send data to the Omega2p and vice versa. I have been researching the different communication protocols (I2C, SPI, UART) based on ease of implementation, speed, hardware etc. and I am leaning toward SPI. However I am wondering:

• if the Omega being half duplex undermines it advantages?
• I've read I can use software based SPI on any GPIO but was curios what disadvantages this poses?
• was wondering if anyone has any recommendations on what to use or had good experience communicating with other SoCs. NOTE: I also have a secure element that will be using 400kHz I2C.

Another thing to consider is, I am planning to flash the nrf SoC firmware from the omega. Are there any good resources on how to do this or any recommendations?

Thanks

found this
https://grabcad.com/library/omega2s-1

Is there a 3D model of the omega 2sp? Want to make sure my mechanical layout will fit onto my board and make a case. I saw there was a thread a while ago but seemed outdated.

@Lazar-Demin I guess I was thinking in terms of a community channel or something about the documentation. But I think it is fine in the docs and gitlab. Thanks for the response.

For the hardware reset circuit in the dev board schematic, does anyone know the value of C510? Do they mean pF? I also assume the NC is for "no connect" but my thought is better safe than sorry.

@crispyoz Thanks! I will take a look

@crispyoz any insight into an antenna? Had the same question.

@Lazar-Demin I looked through all of the docs again, and it seems it is specified. However it is specified in the Omega2S Dev Kit - Getting Started document in section 2.1.1 Differences from the Omega2:

Does not feature a built-in SMT WiFi antenna - optimizing area and allowing the end-user the freedom to select between using the ANT I/O or the uFL connector

My recommendation would be to put this detail (or whole section) in the Omega2S Hardware Design Guide as well. There is a section on Two Antenna Design but nothing else.

Also side note about the documentation, is there a specific place to be posting recommendations? For example, in the Omega2S-Dev-Board schematic C1, and C2 have different values than specified in the Hardware design guide and Reference schematic. Some clarification on that would be helpful.

@JeffZhou Thank you for the clarification! Then I will add an antenna for wifi. I don't suppose there have been any part or layout recommendations already?

Hi,

TL;DR for the SMT omega2s+, does it already have a wifi antenna or do I need to add one to my PCB?

I just found the onion board and want to incorporate it into my own PCB for an IoT device. I have started the design and read through all of the docs but I am still unclear about the wifi antenna.

I can clearly see from pictures that the through hole onion board has a wifi antenna, however does the SMT version also have one built in? It is vague in the docs and I cant see anything. And if not, would I have to go through FCC certification if I add my own? If it does, and the signal is good enough, I assume I am good to go. Can anyone shed some light on this?

Thanks