Omega Talk

• J

  Network - AP on/off - I am very confused.
  acccess point http • 26 Jun 2022, 19:50 • Jim W   28 Jun 2022, 15:56

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  J 28 Jun 2022, 15:56

  YES ! EXCELLENT ! This worked. Thank you Very Much ! (I did have to move my wlan section back to the original). Thank you again !
• N

  OnionGpio for Python3
  gpio python3 • 22 Dec 2017, 19:07 • Neil Stelling   22 Jun 2022, 21:17

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  J 22 Jun 2022, 21:17

  Solved. I found gpio-sysfs from https://pypi.org/project/onion-gpio-sysfs/ to work.
• 

  Any way to detect an Omega2+ when running with Omega2 FW?
  omega2s+ hardware omega2s probe • 12 Jul 2020, 09:39 • luz   22 Jun 2022, 17:20

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  22 Jun 2022, 17:20

  Two years later: Just in case anyone runs into that problem, I found a solution that work from linux userspace: In the kernel messages (which can be viewed with the dmesg command), there is a line like: [ 0.358842] m25p80 spi0.0: w25q128 (16384 Kbytes) or (in newer OpenWrt versions): [ 0.639801] spi-nor spi0.0: w25q256 (32768 Kbytes) This is a message from the spi-nor kernel driver after detecting the actual flash chip. So it is not dependent on the flash size that is baked into the firmware image, but shows the real size of the flash chip. Both of the example lines above are from a firmware made for the Omega2. The first is run on an actual Omega2, the second shows 32M so it is a Omega2+. The only gotcha with this is that the dmesg buffer is not infinite and will loose older lines when too many new ones arrive. This means detecting the flash chip size needs to be done shortly after startup. So I put the following line into a startup script (e.g. /etc/rc.local) : dmesg | sed -n -r -e '/spi0.0: .*w25q/s/.*(w25q.*\))/\1/p' > /tmp/flashchip With this, the chip name and size is captured and can be read any time later from /tmp/flashchip to detect an Omega2(S)+ vs Omega2(S). Finally - Solved!
• C

  Using scanf seems to let the program freeze
  scanf • 19 Jun 2022, 11:47 • CyrilSneer   19 Jun 2022, 13:28

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  C 19 Jun 2022, 13:28

  @CyrilSneer I have some string sitting on my desk. Can you tell me how long it is please? This is the same as your question, there is no specific information so it is not possible to answer your question. As a first step perhaps you can share: What language you are using (script/C/python etc) A sample of your code How you are building your code What model Omega2 are you using What firmware version you are using All the basics
• D

  go-udev on omega 2+
  usb hotplug udev go • 30 May 2022, 17:24 • dixit   16 Jun 2022, 16:03

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  D 16 Jun 2022, 16:03

  @crispyoz Thanks. removing postfix package resolved the issue. appreciate all the help.
• R

  spidev loopback test fails
  spidev spi error • 13 Jun 2022, 12:25 • rahul2413   13 Jun 2022, 19:00

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  13 Jun 2022, 19:00

  @rahul2413 looks like you're trying to do a full-duplex SPI transaction. The Omega2 family does not support full-duplex on the hardware SPI bus. Half-duplex transactions will work fine. More details in this FAQ post. If you absolutely need full-duplex, you can try using a software-based SPI bus.
• D

  How to multiplex UART's Rx with Tx
  uart • 8 Jun 2022, 14:15 • dkaranassos   11 Jun 2022, 12:18

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  11 Jun 2022, 12:18

  @dkaranassos said in How to multiplex UART's Rx with Tx: […] Does the same apply to UART1 and UART0 as well? Unfortunately, yes. ️
• C

  Upgrade to OpenWRT 21.02 coming soon?
  openwrt openwrt 21.02 • 13 Jul 2021, 00:19 • Chris Morgan   6 Jun 2022, 16:38

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  6 Jun 2022, 16:38

  In the meantime, OpenWrt 22.03 is about to get released... I have largely migrated my own firmware build already, and it works so far. I'm posting here in case anyone is interested in my status quo and/or cooperation to research/iron out the remaining problems. All in all, the jump from 19.07 went quite smoothly, networking/wifi (mt76 though, not firecore) config just worked as-is. At this time, I have two issues: gpio numbering got totally weird as in newer kernels, gpio numbers have become second class citizens, and gpio labels in the device tree are the recommended way to go. Still, /sys/class/gpio exists and works, but the numbers are offset by 416, but also swapped in order such that gpiochip2 ones come first. [Update: I could track down the reason for this in the kernel sources: drivers could (and still can, but it's deprecated!) set a base number for GPIO banks, or let the kernel automatically assign numbers by setting base to -1. The automatic assignment is in gpiochip_find_base(), and explains the weird outcome: for each GPIO bank registered, it sets base such that the bank gets the highest available GPIO numbers, down from ARCH_NR_GPIOS which is 512 by default. So we get 480..511 for the GPIOs that used to be numbered 0..31, 448..479 for 32..63 (and, only theoretically because not exposed, 416..447 for 64..95). The Linux kernel guys are quite eager to kill the "old" GPIO numbers, see these comments - "...drop this and assign a poison instead." . So while one could add a patch to set base at it was in older kernels to get the old numbers back, I doubt that would be a good way forward.] kmod-spi/i2c-gpio-custom no longer exist. The way to go is probably using device tree overlays (like the raspberry folks already do for a long time), but that needs enabling OF_OVERLAY in the kernel and having the dtc device tree compiler available. I'm about to build a fw with this and will start tinkering with dtc and overlays... [Update2: I got dynamic device tree overlays working, once I found it involves more than just setting OF_OVERLAY. One also needs CONFIGFS_FS and a patchset that was rejected in OpenWrt mainline, which in turn allows loading DT overlays via configfs from userland when OF_CONFIGFS is also set. [Update: I had no luck yet with OF_OVERLAY, altough I built the kernel with that option set, I did not get the /sys/kernel/config/device-tree/overlays/ node for actually managing DT overlays yet. Any ideas what I'm doing wrong? Apparently there's more to it than just setting OF_OVERLAY] [Update2: I also made a post in the OpenWrt developer mailing list asking about general status of GPIOs in OpenWrt 22.03, got no feedback yet]
• A

  Not able to install xsltproc by opkg
  omega2s+ opkg c++ make makefile • 4 Jun 2022, 15:16 • abhishekbartrac   4 Jun 2022, 17:01

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  C 4 Jun 2022, 17:01

  @abhishekbartrac to install xsltproc edit /etc/opkg/distfeeds.conf and uncomment lines 2 and 5, then run this command: opkg update && opkg install xsltproc
• 

  This topic is deleted!
  30 May 2022, 17:03 • CAP 33   30 May 2022, 17:03

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• J

  No module named 'onionGpio'
  oniongpio • 24 May 2022, 17:05 • Jim W   26 May 2022, 15:55

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  J 26 May 2022, 15:55

  Really ? Kind of throws a wrench in the works. Anyone know how to bit-bang the IO pins from within Python3 ?
• J

  Omega2 not completing startup
  wifi connect • 11 May 2022, 12:08 • Jim W   24 May 2022, 17:08

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  J 24 May 2022, 17:08

  Thanks, I did not specify a channel - it's just the current channel of our 2.4 wifi.
• J

  LTE connection cannot load Terminal
  lte • 6 May 2022, 21:18 • JohnnyPicnic   10 May 2022, 14:11

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  J 10 May 2022, 14:11

  The Terminal app from the web ui.
• P

  GPIO Node Red
  gpio node-red • 2 Dec 2019, 12:23 • pontu knutsson   6 May 2022, 21:24

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  J 6 May 2022, 21:24

  It appears this no longer works. https://www.thegoodpenguin.co.uk/blog/stop-using-sys-class-gpio-its-deprecated/ Is there another easy way to "watch" the state of a gpio in Node-Red?
• J

  Change port of OnionOS webserver
  help • 27 Apr 2022, 16:13 • JohnnyPicnic   28 Apr 2022, 08:58

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  C 28 Apr 2022, 08:58

  @JohnnyPicnic The issue is that the OnionOS uses UBUS to log you in but the javascript used on the pages does not refer to the configured port. So while the web server is serving pages on the port you configured, the javascript is assuming ubus is on the standard port 80. The solution would be to edit the javascript which in /www
• J

  Omega2LTE NA no celluar connection
  help lte • 27 Apr 2022, 19:45 • JohnnyPicnic   27 Apr 2022, 21:30

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  J 27 Apr 2022, 21:30

  I managed to connect using the Rogers APN ltemobile.apn but not a private APN.
• C

  Set pin mode at boot
  gpio pinmode • 22 Apr 2022, 09:53 • ChMsT420   23 Apr 2022, 07:42

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  C 23 Apr 2022, 07:42

  @ChMsT420 @Lazar-Demin The only issue with using rc.local is that it runs last so if you have a daemon or loadable module that is dependent on the pin mode, rc.local might be too late. Another alternative is to use a hotplug script that is triggered earlier in the boot process. Take a look in /etc/hotplug.d for some examples of these scripts, also hotplug is quite well documented.
• F

  wireguard not install
  wireguard packa wireguard error • 6 Jun 2021, 21:24 • fpigliacelli   22 Apr 2022, 07:11

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  22 Apr 2022, 07:11

  @crispyoz Yep, the module was loaded fine. Thanks.
• D

  Omega2S: "Buildroot" + kernel 5.4 ?
  omega2s buildroot kernel 5.x • 13 Apr 2022, 23:51 • dim   13 Apr 2022, 23:51

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• 

  Omega2s+ C compiler optimisations
  c compiler • 13 Apr 2022, 03:43 • huntc   13 Apr 2022, 03:43

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