BluePill USB won't enumerate at all

Post here first, or if you can't find a relevant section!
User avatar
RogerClark
Posts: 7555
Joined: Mon Apr 27, 2015 10:36 am
Location: Melbourne, Australia
Contact:

Re: BluePill USB won't enumerate at all

Post by RogerClark » Sun Dec 03, 2017 10:50 pm

I have to manually create an account for you on the Wiki.
I had to change it to manual creation, because it seems that instances of MediaWiki are a honeypot for spam-bots and I had to spend hours one day deleting hundreds of spam bot accounts containing fake personal details full of advertising links

Have you used MediaWikl before ?

msiddalingaiah
Posts: 5
Joined: Sat Dec 02, 2017 11:02 pm

Re: BluePill USB won't enumerate at all

Post by msiddalingaiah » Sun Dec 03, 2017 11:26 pm

Yes. Wikipedia is built on MediaWiki, so I contributed to that in the early days.
We had installed MediaWiki internally at a previous organization as well.
Where I am now, we have Atlassian products, so I've grown accustomed to Confluence.

I actually met and interviewed Ward Cunningham (inventor of the Wiki) in 2006.
He's a very interesting character to say the least.
The audio no longer seems to be available...

ag123
Posts: 836
Joined: Thu Jul 21, 2016 4:24 pm

Re: BluePill USB won't enumerate at all

Post by ag123 » Tue Dec 19, 2017 3:29 pm

msiddalingaiah wrote:
Sun Dec 03, 2017 6:30 pm
I was using a cable that was lying around and my son reminded me that he got that with a USB battery backup, so it might only be useful for power.
Surprisingly, two other cables fail the same way, they were also "charging" cables, not "data" cables.
oh i just vaguely recalled something about those 'charging' cables:
http://blog.curioussystem.com/2010/08/t ... -charging/

i think some usb cable manufacturers deliberately shorted the d+ d- usb data lines across a 200 ohm (or worst deliberate short 0 ohm) to 'indicate to the phone' that the power adapter can supply > 500 ma currents. that short if applicable is intended to be in the *power adapter*, but i'd guess the manufacturers tried to be 'helpful' and shorted that (the data lines) in the usb cable instead :o
it's a crazy world out there

Post Reply