U disk drive

On the Linux development board, the system is ubuntu18.06, insert the storage devices, there is no reaction, the storage device is not a U disk, before there is a single chip microcomputer drive for data storage, which leads to the la 4 wire VCC D - D + GNG, but I don't have a little reaction on is

The test
I use other usb plug in, can be identified, and under the/dev directory has sda block device nodes, file systems are supported by

I'm through the command to check related information below


It can be seen after the plug in the usb drive is to identify the equipment, is the device as a usb flash drive, can not be the reason why I think about is the lack of drive, identified the chip for cypress AN2131, I will find out the baidu, no relevant driver code, as well as the zeusb also don't know much about

The great god to help me have a look, if my train of thought to, has encountered the same problem before, thank you

CodePudding user response:

To write the detailed point, such as

"Insert a storage device, there is no reaction, the storage device is not U disk",
What is the storage device? With the interface? How is the hardware is even? What is not other log? Whether the storage device support hot plug?

CodePudding user response:

For not U disk, before is to use access data on a single chip microcomputer, competent let on Linux development board, the storage device from the outside, the glue, not dismantle, on the single chip microcomputer, the stored interstitial leads to four wires, I have a time will come out in
1-1: usb device descriptor read/64, the error - 71
Other information is in the picture, I only get so many, I'll find chip AN2131 data is usb1.1 protocol, estimate the equipment quite old, trouble great god help me have a look, a week did not come out the whole last week, urgent, thanks

CodePudding user response:

reference 1st floor moquan1100 response:

to write detailed points, such as

"Insert a storage device, there is no reaction, the storage device is not U disk",
What is the storage device? With the interface? How is the hardware is even? What is not other log? Whether the storage device support hot plug?

Then there is I turned over several versions of the Linux kernel, can't find about cytress an2131 driver loaded, but there are other cytress chip driver, I try to choose on the mirror to development board, does not work

CodePudding user response:

You don't know what I mean, what is the storage devices on the USB connect? (such as u disk, sd card, card reader, etc.) this is the key to connect a USB flash drive, can identify, because in the Linux USB driver know u disk,
If it is other devices must first USB drive

CodePudding user response:

See, the storage device is a black box , inserted on Windows are not identified, the need to install the somebody else give software can, you say it is very important, I also feel I have to find relevant driver under Linux, but identified AN2131 EZUSB, I don't know whether I find this chip driver

CodePudding user response:

Through lsusb and dmesg command to print information, usb can recognize it, can't just put it as a piece of equipment for data storage, a great god please, now all have no idea, don't know where to check

CodePudding user response:

The storage devices, you can call A, is through the USB connection to the Linux system? USB recognition layer classification, look from your last log is disconnected, so the bottom not to identify successful, haven't to the piece of equipment that layer,

My advice is to find out what is the storage device and unknown equipment maybe there is something wrong with the device itself or the system does not support, drive installed on the computer after the success of the recognition, look at the capacity, producers information, VID/PID, and online search how to support the device in Linux system, if already support, just have a look at your Linux system version, make sure you this version supports,

CodePudding user response:

Yes directly through the usb connection, good, thank you very much, I'll check, think I have a look at the usb driver code, can see yourself, see the results of the fog, good that I understand this device first, thanks again

CodePudding user response:

https://community.cypress.com/docs/DOC-13025
. Uppercase Unfortunately, if really didn't find

CodePudding user response:

references 9 f melo_fang response:

https://community.cypress.com/docs/DOC-13025. Uppercase Unfortunately, as if did not find

Thank you thank you, this chip is too old to have been discontinued, it is uncomfortable