Mac serial connection via USB hub

MiniPOV4 and previous versions

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ahdavidson
 
Posts: 131
Joined: Wed Jun 03, 2009 9:59 am

Mac serial connection via USB hub

Post by ahdavidson »

I am using a PL2303 USB/Serial Converter to program my MiniPOV on an iMac (newish Intel Core 2 Duo, OS X 10.5.7) with the recommended driver.

It connects OK when I plug it directly into a USB port on the Mac, but not though a powered USB hub. Is this a known restriction or should it be expected to work through the hub? I've noticed this problem with other devices, so it wouldn't surprise me.

I check the port address (/dev/cu.PL2303-0000xxxx) after connecting the converter on the hub and update the makefile. The symptom I observe is LEDs flashing on the MiniPOV when it starts, but avrdude never issues its usual first message:
avrdude: AVR device initialized and ready to accept instructions
and a nice CTRL-C is necessary to interrupt it.

It's not a big deal, but using the hub would be more convenient if it is possible.

Thanks for any advice.

adafruit
 
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Joined: Thu Apr 06, 2006 4:21 pm

Re: Mac serial connection via USB hub

Post by adafruit »

never heard of the problem but it sounds like the hub is messing stuff up, sorry to say!

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ahdavidson
 
Posts: 131
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Re: Mac serial connection via USB hub

Post by ahdavidson »

USB hubs have a way of doing that, I've observed empirically, and I've never dug into the reasons.

Oh well...

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