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| USB 16GB - Get BSY after 1 sec http://forum.hddguru.com/viewtopic.php?f=10&t=41529 |
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| Author: | Lardman [ August 4th, 2021, 6:50 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
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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| Author: | pepe [ August 5th, 2021, 4:00 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
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| Author: | rom1nux [ September 10th, 2021, 15:28 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
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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| Author: | fzabkar [ September 10th, 2021, 16:00 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
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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| Author: | rom1nux [ September 10th, 2021, 17:36 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
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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| Author: | fzabkar [ September 10th, 2021, 18:42 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
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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| Author: | rom1nux [ September 10th, 2021, 19:29 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
Ok, I'm off topic, sorry for topic pollution 
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| Author: | grevan [ September 11th, 2021, 13:06 ] |
| Post subject: | Re: USB 16GB - Get BSY after 1 sec |
It would still be nice to know how HDDSuperClone handles that. |
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