Omega2 annotated pinout (including MT7688 pin names)
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@Luciano-S. I was looking at the wrong bootstrap-pin in the PDF earlier, UART0_TX should be pulled down, so the pull-down resistor doesn't matter. I was looking at the boostrap-pin on UART1_TX, which is the opposite.
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@WereCatf Thanks for your clear and detailed pinout diagram. Wow, you had me excited for an hour re-considering a hardware fix for the old mini docks ... Actually, the Omega2 boots fine on those docks, there just isn't any communication to/ via the Omega2's RX0 pin - such as unresponsive keyboard, can't use Busybox, etc. Luciano and I wrote about our observations HERE and HERE.
I am curious, could/ does the Omega2 boot-strap determine which pins are the serial Tx and Rx?
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@Ken-Conrad Does your mini-dock match the schematics at https://raw.githubusercontent.com/OnionIoT/Onion-Hardware/master/Schematics/Omega-Mini-Dock.pdf ? Those are a year old and as far as I understand, they should match the old mini-dock.
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@Ken-Conrad Oh, and no, the UART-pins are fixed and cannot be moved to other pins as no other pins have a UART0-mux. So no, the bootstrap-pins can't do that.
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@Luciano-S. said in Omega2 annotated pinout (including MT7688 pin names):
@administrators how do we have to proceed with this fact?
I made also a ticket in this (mine) request.
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@luz What PCB did you design? Care to share?
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@Victor-Tagayun it was a small mainboard hosting the Omega, a ethernet jack, a 4.5..39V to 3.3V converter (single part, integrated), a RS485 serial, two multiplexed i2c connectors and a level shifter for WS281x LED chains.
If anybody is interested in this very particular combination of features, just let me know
This is part of a larger project, which I will publish as soon as all the hard- and software parts work together as intended, from laser cut wood to WS281x kernel driver using MT7688 PWM…
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@WereCatf said in Omega2 annotated pinout (including MT7688 pin names):
I was looking at the wrong bootstrap-pin in the PDF earlier, UART0_TX should be pulled down, so the pull-down resistor doesn't matter. I was looking at the boostrap-pin on UART1_TX, which is the opposite.
Can I please ask what this PDF file is?
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@György-Farkas A PDF-file is short for "portable document format" and is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. -- https://en.wikipedia.org/wiki/Portable_Document_Format
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@WereCatf said in Omega2 annotated pinout (including MT7688 pin names):
@György-Farkas A PDF-file is short for "portable document format" and is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, graphics, and other information needed to display it. -- https://en.wikipedia.org/wiki/Portable_Document_Format
Really?!
@WereCatf said in Omega2 annotated pinout (including MT7688 pin names):
I was looking at the wrong bootstrap-pin in the PDF earlier, UART0_TX should be pulled down, so the pull-down resistor doesn't matter. I was looking at the boostrap-pin on UART1_TX, which is the opposite.
Can I please ask what that PDF file is?
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@György-Farkas The MT7688 specsheet, what else?
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@WereCatf
..., 998, 999, 1000
Thank you very much indeed.
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Does someone knows if there is somewhere released the acutal Omega2 schematic? in the Github repository I just find the Omega(1) which mounts the Atheros and not the MT7688.
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Not yet. Pls be patient.
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Thanks mate! You just saved me a lot of debugging time
