Thanks for sharing such a helpful instruction, really appreciate for your article.

Hi @crispyoz , I didn't need to modify the package, because I misunderstood the error at the beginning. Now I solved the problem after long hours. I managed to program using swd mode, it was actually available but the error message was misleading for me. Thanks a lot though

@Yale-E-Goldman: I had problems with configuring UNO as ISP. It was long time back, so I don't remember the exact error codes, but I remember that the UNO programmed using IDE 1.6.x to act as an ISP failed to program the "3rd" UNO. All versions of IDEs are not good for the job. Finally, I was able to program the 3rd UNO using the 2nd UNO (ISP) which is programmed into an ISP using the 1st UNO with IDE 1.0.1. https://www.instructables.com/Burning-the-Bootloader-on-ATMega328-using-Arduino-/ I still have that ISP UNO, and it can work as ISP with other versions of IDE such as 1.8.x Thanks..

@Bartosz-Grabias I understand, but is it also possible to reach the OnionOS that way?, and can I program the device via the Code Editor if it is not connected to another network? Thanks !

We have quite a bit of content on cross-compilation that should make your life easier: Documentation article: https://docs.onion.io/omega2-docs/cross-compiling.html Video tutorial: https://www.youtube.com/watch?v=VOs75UsGe_o Article series detailing how to cross compile: Setting up the Build system: https://onion.io/2bt-cross-compiling-c-programs-part-1/ Cross Compiling Programs: https://onion.io/2bt-cross-compiling-programs/ Cross Compiling Programs that use External Libraries: https://onion.io/2bt-cross-compiling-c-programs-part-3/ The jist of it is that you'll need to use the Build System to do your cross compiling. If you need a separate library for your program, it will first have to be built by the build system before you can include it in your program.

In this days I tried cross-compile both with VM Ubuntu and with Docker Toolbox but I wasn't able to include bluetooth library. Does anyone know how to do it? For the test, I used this example: http://people.csail.mit.edu/albert/bluez-intro/c404.html Edit: I found in Docker the bluez-lib and they run well but work in that conteiner is laborious (I have to use transfer.sh website to transfer files). Where can I found the Makefile to compile bluez-lib in the LEDE Configurator in order to use it in Ubuntu too?

I have added a small instructable for this. It also contains a small video with a demo and a comparison between C and Go PWM. http://www.instructables.com/id/Onion-Omega2-and-Golang/

Hello, The chip used is the SSD1306. If you're opening I2C for direct write from your script I recommend you to read the chip datasheet: https://www.olimex.com/Products/Modules/LCD/MOD-OLED-128x64/resources/SSD1306.pdf The datasheet has more information and detail on is the mapping organized.

All - I owe a HUGE debt of gratitude to your detailed answers. Since it does seem the weight of consideration, as well as design (including at least DMA and cache), is going to be fighting against me, I'll head back to the drawing board and find something more architecturally suitable for real-time work! I feel like I owe you all at least a beer - your patient explanations have almost certainly saved me months of headache.

thinking about this logically if i have a micro sd card inserted in the builtin dock of omega 2+ and i can see it by typing 'df' into command prompt and then not do anything but wait 2 minutes, type 'df' again and i can't see the sd card is this right or wrong ( only reason i can think of, of why it would automatically not show is if it was automatically dismounting because of no activity) otherwise i think its broken, which im guessing it is secondly, command 'swapon' i don't think according to the documentation should come up with swapon: not found i mean to get to the point of initiating the swap file i used 'mkswap' which worked, swap file is working i just can't get that one command to work, why i just don't know if im doing something wrong, the documentation is wrong, or the device is broken so frustrating for new users, not one step has worked correctly yet

@Alex-Jochym If I was to do this, I would start by investigating the available API from wunderground. Then I would look for similar projects in order to get inspiration. When it comes to language, it mainly depends on your level of skill. C is not that hard, but you need to understand what a pointer is and you might want to find some libraries to use in order to avoid doing everything from scratch. Python makes it easy to work with JSON, lists, sets, etc., but it will consume some extra space. If you select Python, you don't have to worry about cross compiling, so it might be easier to start with. So instead of asking which language is better (which basically can be compared to asking which religion is better, which of course depends on personal preferences), it is better to ask "In which language will it be easiest?". I write this because I assume you are new to programming, and writing in C might kill your motivation if the task is too complex. I hope this helps.

@Brian-Piersel Thanks for the simple-to-use code! I've written a simple Python script that imports your omega_gpio script and controls three of four relays on a relay module to light various combinations of RGB LEDs on a light strip (the script is fairly well documented, so further description is probably not necessary here): colors.py

I would be interested too. To run this code https://github.com/todbot/blink1/tree/master/python/pypi/blink1

Hi @Vincent-Bonnefille, yeah, you can install node without npm. You simply need to run the following commands: opkg update opkg install node

Awesome!