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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: August 4th, 2021, 6:50 
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Joined: November 7th, 2020, 5:31
Posts: 1072
Location: The_UK
pepe wrote:
there is an usb adapter for pc3k that can repower the usb device

He's right you know ! I've just checked the box of random adapters I never use and sure enough there as USB one in there. Thanks pepe.

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https://www.usbrecovery.co.uk/


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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: August 5th, 2021, 4:00 
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Joined: October 3rd, 2005, 0:40
Posts: 4301
Location: Hungary
:wink: :wink:

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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: September 10th, 2021, 15:28 
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Joined: September 6th, 2021, 15:07
Posts: 22
Location: France
Hello,
My two cent : my "noname" removed NAND connected to GPIO of STM32 have the same behavior on B/R pin when there is no or too low pull up resistor. It take about 800ms to 1200ms to get reset busy flag....


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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: September 10th, 2021, 16:00 
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Joined: September 8th, 2009, 18:21
Posts: 15440
Location: Australia
rom1nux wrote:
Hello,
My two cent : my "noname" removed NAND connected to GPIO of STM32 have the same behavior on B/R pin when there is no or too low pull up resistor. It take about 800ms to 1200ms to get reset busy flag....

The Busy/Ready pin is open drain. A pullup resistor is mandatory. In any case I believe the OP's BSY problem is due to error recovery issues.

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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: September 10th, 2021, 17:36 
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Joined: September 6th, 2021, 15:07
Posts: 22
Location: France
Yes, that why I understand and read after notice this behavior.
A capacitive effect make the edge very very slow to rise above the Th-H (0.72xVDD). with proper pull up, the edge is "straight".
But I just begin to wonder I BSY refer to busy pin (R/B)... I'm off topic ?


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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: September 10th, 2021, 18:42 
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Joined: September 8th, 2009, 18:21
Posts: 15440
Location: Australia
When the OP is talking about "busy", it means that the entire USB device is being seen as busy by the USB host, in this case the data recovery tool.

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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: September 10th, 2021, 19:29 
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Joined: September 6th, 2021, 15:07
Posts: 22
Location: France
Ok, I'm off topic, sorry for topic pollution :oops:


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 Post subject: Re: USB 16GB - Get BSY after 1 sec
PostPosted: September 11th, 2021, 13:06 
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Joined: July 31st, 2018, 12:30
Posts: 78
Location: Brasil
It would still be nice to know how HDDSuperClone handles that.


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