XU4 with Shifter

Help with the Hardkernel Odroid XU3 / XU4 hardware
MW0MWZ
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Re: XU4 with Shifter

Post by MW0MWZ » Sat Jan 12, 2019 12:43 am

Adrian,

It does appear to depends on the shield that you use, the integrated radio/modem boards (especially the ones that have no Boot0 or reset buttons on them are the ones we see issues with, those use Pin 38 to reset the cpu during the flash process and don't have a hardware method, holding the pin at 1.8v cases them to stay in reset and not boot.

Most Odroid users are using them to drive full MMDVM and not MMDVM_HS, so thats why it's taken so long for this to come up.

Nice work on the script, that looks good.

I'll retest the Odroid image again, did you write it to uSD card first, or direct to the eMMC ?
Andy

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MW0MWZ
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Re: XU4 with Shifter

Post by MW0MWZ » Sat Jan 12, 2019 12:59 am

Tested mine *only* with the shifter shield on it - going to triple check and test it both ways.

The way I have the image setup, at the moment it has to be written to an SD card first, and then use the pistar-sd2mmc tool to move it over.
I'm going to re-test it carefully and make sure I didn't break something on the last build.
Andy

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MW0MWZ
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Re: XU4 with Shifter

Post by MW0MWZ » Sat Jan 12, 2019 1:27 am

Thanks for that, Pi-Star was already using the ondemand scheduler, but I had forced the fan to stay running at a level that did make it quite annoying, one of the changes in the most recent image is to tame that quite a lot, its back to variable fan speed so save your ears from the whine.

Tait hardware - yes its good stuff, we do see some of it over here, but its not as easy to get hold of sadly.

I'll get some more testing done when I get up tomorrow, thanks for the feedback, appreciate it.
Andy

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MW0MWZ
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Re: XU4 with Shifter

Post by MW0MWZ » Sat Jan 12, 2019 12:17 pm

Exactly because the device ID changes between the uSD and eMMC devices, the tool to move from uSD to eMMC takes care of that on the fly, its why if you push the image directly to eMMC it won't boot.
Andy

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