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Lardman
 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: 1291
Location: United Kingdom
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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Data Recovery Services in the UK.
https://www.usbrecovery.co.uk/
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pepe
 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: 4758
Location: Hungary
:wink: :wink:

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Adatmentés - Data recovery
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rom1nux
 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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fzabkar
 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: 16997
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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rom1nux
 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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fzabkar
 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: 16997
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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A backup a day keeps DR away.
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rom1nux
 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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grevan
 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: 125
Location: Brasil
It would still be nice to know how HDDSuperClone handles that.
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