Omega Talk

• N

  Omega2S Antenna
  omega2s • 27 Nov 2022, 15:58 • nsmith   27 Nov 2022, 16:56

  2
  0
  Votes
  2
  Posts
  17
  Views

  C 27 Nov 2022, 16:56

  @nsmith You need an antenna of some sort, the Omega2+ has an antenna on it's little PCB, but the Omega2S is not on a PCB so it has no antenna. You have a choice a UFI antenna or an SMD antenna, the UFI antenna may give you better wifi but it's plugged in to the Omega2S UFI connector then you have to mount it somewhere. Just google UFI antenna there are loads available, I've tried several and they all functioned fine but personally I use an SMD antenna so it can be mounted discreetly on the board, the DigiKey part # is 712-1010-1-ND, they have 450,000+ in stock. Your link was to the Omega2S which has 64MB RAM and 16MB Flash, if you need more you can use Omega2S+ which has 128MB RAM and 32MB Flash same as the Omega2+ you have been referring to in your recent posts. https://www.digikey.com/en/products/detail/onion-corporation/om-o2sp/9922958 Here is the Omega2 reference schematic which helps you to design your PCB to use the Omega2S. https://github.com/OnionIoT/Omega2/blob/master/Schematics/Omega2S-Reference-Schematic.pdf
• N

  So which is better omega2+ or VoCore2
  omega2+ • 23 Nov 2022, 19:55 • nsmith   27 Nov 2022, 09:48

  5
  0
  Votes
  5
  Posts
  40
  Views

  C 27 Nov 2022, 09:48

  @nsmith Exactly the same firmware image, you just have more GPIO, UART and PWM exposed.
• N

  Fix for broken HW SPI!!
  spi • 22 Nov 2022, 01:57 • nsmith   23 Nov 2022, 07:00

  6
  0
  Votes
  6
  Posts
  33
  Views

  23 Nov 2022, 07:00

  @nsmith I use GPIO11 for CS1, there is no boot issue. I think it's because the Omega2's bootloader will set the GPIO11 as HIGH output during boot. Changing device tree cannot help in this case. Because no matter how you set pull-up or whatever in device tree, the Omega2 need to access flash memory to load the kernel with the defined device tree.
• R

  spidev fails
  spi error • 21 Jul 2022, 06:22 • rahul2413   22 Nov 2022, 23:27

  16
  0
  Votes
  16
  Posts
  85
  Views

  22 Nov 2022, 23:27

  @nsmith said in spidev fails: I think the HW SPI is only used during boot up to read the OpenWRT kernel code from the flash into RAM, after that i believe its not used at all, otherwise the SPI would be un-usable. I really hope this is true becuase I'm already lacking 4 GPIO pins, if I have to give up more pins to a bitbanged SPI then my project will be over. hopefully not, but: The SPI is used for loading the bootloader from flash (without any driver, this part is hard-wired in the MT7688), then the bootloader (u-boot) will load the Linux kernel from flash using its own flash driver. But from then onwards the linux kernel will still access the flash whenever it needs to read or write to a file that is not on the ramdisk (which is - pretty everything except from /tmp and /var). Of course, there is some caching, so not every tiny file access will always access flash, but still in many cases. Depending on what your overall application does, there might be very little file accesses, but avoiding them entirely (from linux services running in the background, responding to network, keeping WiFi connections, serving web requests or ssh etc.) would mean you need to strip down OpenWrt severely, essentially killing all services except for your own app, or transplant everything to the ramdisk. Maybe possible, but far from a no-brainer. (Btw: sysupgrade needs to do the ramdisk transplant thing when it replaces the firmware, so one could glean some ideas from there - complicated beast though, too.) Unfortunately, it seems to me not even the "switch everything to SW-SPI" trick you posted can help here, because after that you'll still be sharing the SPI bus with the flash chip, only that flash accesses now take 40 times more time Maybe, when you run out of GPIOs, a I/O extender chip like MCP23S17 might be far easier than too much struggle trying to re-use those HW SPI pins in any way. These are good for half-duplex SPI devices that need high bandwidth but no real time bus availability, such as a LCD display (and the internal flash), but for nothing else.
• N

  Is the HW SPI used after boot?
  spi • 22 Nov 2022, 00:36 • nsmith   22 Nov 2022, 20:26

  3
  0
  Votes
  3
  Posts
  14
  Views

  22 Nov 2022, 20:26

  HW SPI is definitely used after boot. The SPI pins cannot be used as GPIOs. We recommend following the GPIO documentation and datasheet. Software SPI on any other GPIOs will work for you. See this post for more details. I understand that moving to sw spi or using a different ADC will likely require a board revision on your end, but that looks to be the best way forward.
• L

  Problem starting kernel, did I brick my board
  openwrt lte kernel os • 21 Nov 2022, 22:15 • leviathan33   22 Nov 2022, 08:49

  2
  0
  Votes
  2
  Posts
  25
  Views

  C 22 Nov 2022, 08:49

  @leviathan33 I looks like your firmware partition size is a bit wacky. I wonder if you mucked up the firmware with your "solution" to not being unable to use scp. Did you see my reply to that post? The LTE is basically an Omega2S+ with the LTE stuff added in, so for future reference you can always use the Omega2+ firmware images and then add in the LTE packages separately. Have you tried a factory reset? If so, what were the results? Next step I would try is to reflash the device form USB, the instructions are here: https://docs.onion.io/omega2-docs/Firmware-Flashing-from-USB-storage.html USB device can be fussy so you may have to try from more than one USB device.
• T

  Starting up Omega2S on custom PCB
  omega2s cp210x cp2102 • 19 Nov 2022, 14:21 • thomasderbauer   22 Nov 2022, 02:49

  5
  0
  Votes
  5
  Posts
  35
  Views

  T 22 Nov 2022, 02:49

  That makes Sense, so my Power Wiring should be correct. I see that in your schematic and in the datasheet the HW Reset and VDD_FLASH are connected via transistors. Any Benefit to that compared to just pulling them to GND via a Switch? CPU_RST_SWITCH simply bridges to GND.
• N

  This topic is deleted!
  22 Nov 2022, 01:38 • nsmith   22 Nov 2022, 01:38

  1
  0
  Votes
  1
  Posts
  1
  Views

  No one has replied

• L

  Serial output is not working properly
  uart serial port rs232 • 15 Nov 2022, 19:46 • leviathan33   21 Nov 2022, 07:51

  20
  0
  Votes
  20
  Posts
  65
  Views

  21 Nov 2022, 07:51

  I am using the UART1 of Omega2 - /dev/ttyS1 for GPS module communication with 115200bps. It is 24/7 running for more than 3 weeks constantly. Working with no error. So I cannot guess what will be your issue on LTE board.
• N

  Is it possible to upgrade the stock OpenWRT
  openwrt • 15 Nov 2022, 16:47 • nsmith   20 Nov 2022, 05:46

  10
  0
  Votes
  10
  Posts
  62
  Views

  C 20 Nov 2022, 05:46

  @leviathan33 @DumTux if you don't want to waste a load of space installing the lua stuff, you ca use the wifi commandline tool.
• N

  Problems with SpiDev in C
  spi • 18 Nov 2022, 13:50 • nsmith   18 Nov 2022, 13:50

  1
  0
  Votes
  1
  Posts
  13
  Views

  No one has replied

• N

  How to copy new OpenWRT binary build to onion omega2?
  openwrt • 18 Nov 2022, 02:20 • nsmith   18 Nov 2022, 03:03

  4
  0
  Votes
  4
  Posts
  15
  Views

  C 18 Nov 2022, 03:03

  @nsmith scp -oHostKeyAlgorithms=+ssh-rsa omega-squashfs-xxx.bin root@192.168.1.2:/tmp
• 

  I2C Potentiometer AD5245
  omega2 i2c kernel config ad5245 potentiometer • 17 Nov 2022, 15:45 • DumTux   17 Nov 2022, 15:45

  2
  0
  Votes
  2
  Posts
  21
  Views

  No one has replied

• N

  Official Omega2 Hardware SPI driver for C?
  spi • 17 Nov 2022, 13:28 • nsmith   17 Nov 2022, 14:59

  4
  0
  Votes
  4
  Posts
  24
  Views

  17 Nov 2022, 14:59

  In my opinion, it is spidev (package name, kmod-spidev), as it is the working module on OpenWrt 22.03 build for Omega2. I could see hardware SPI driver is present under /dev/spi* after installing it. Havent tested it yet by myself, though.
• N

  This topic is deleted!
  17 Nov 2022, 04:55 • nsmith   17 Nov 2022, 04:55

  1
  0
  Votes
  1
  Posts
  5
  Views

  No one has replied

• N

  This topic is deleted!
  17 Nov 2022, 01:56 • nsmith   17 Nov 2022, 01:56

  1
  0
  Votes
  1
  Posts
  5
  Views

  No one has replied

• N

  Update OpenWRT feeds code
  openwrt • 13 Nov 2022, 01:49 • nsmith   16 Nov 2022, 03:07

  9
  0
  Votes
  9
  Posts
  44
  Views

  C 16 Nov 2022, 03:07

  @nsmith The patch files are available in the links I provided, just replace them in your system. The patch files are in the same directory as the make file, under a patches directory: <source>/feeds/packages/multimedia/gphoto2/patches The patch files refer to the version so it's surprising the build is trying to apply them to the wrong version.
• N

  Inquiry: Resetting Omega 2+
  factory reset omega 2 + login factory restore resetting • 14 Nov 2022, 17:15 • Nomadic.Homebody   15 Nov 2022, 04:21

  3
  0
  Votes
  3
  Posts
  16
  Views

  C 15 Nov 2022, 04:21

  @Amalee Factory reset is in the documentation. What if any dock do you have? https://docs.onion.io/omega2-docs/factory-reset.html @nsmith is correct regarding the default password.
• N

  How to turn off the ephy so I can use those 4 pins for GPIO?
  omega2+ gpio ephy • 12 Nov 2022, 02:34 • nsmith   12 Nov 2022, 22:07

  7
  0
  Votes
  7
  Posts
  24
  Views

  12 Nov 2022, 22:07

  This might help, https://github.com/dumtux/agpio-switch-mt7688 I wrote this for enabling all 5 ethernet ports for Ethernet switch. But I think you can modify this for disabling all of them to use digital I/O, by modifying AGPIO_CFG.
• 

  GPIO using `gpioctl` on OpenWrt 22.03
  openwrt 22.03 gpiomux gpioctl • 11 Nov 2022, 13:23 • DumTux   11 Nov 2022, 23:04

  3
  0
  Votes
  3
  Posts
  34
  Views

  11 Nov 2022, 23:04

  Yes, it worked. Thank you. I had to use different pin numbering as @luz explained in this answer for my CAN bus question.