Can I transfer file to QSPI external flash over USB ?

RE: Can I transfer file to QSPI external flash over USB ?

Susheel Nuguru — Fri, 04 Jan 2019 09:05:50 GMT

Are you sure that you connected to the "nRF USB" port along with the one you connect to power the device?

Once you connect a usb cable to "nRF USB" port , then you can see that there are drives emulated in your system. You can drag and drop or copy/paste any files you want into them. I just tested it and it worked just file.

To be able to read the contents using terminal com port, disconnect the cable from "nRF USB" port so that the terminal can connect to the MSC (since there cannot be two connections to the instance" and you can read the files using the buttons mentioned by steps in Andreas' reply.

RE: Can I transfer file to QSPI external flash over USB ?

Justin_Yeh — Thu, 27 Dec 2018 10:15:55 GMT

No, I want to put file from PC to device, not to create a random file at device.

8. Try pressing Button 1 to create a file. Manipulating the file system from the development kit will not be possible while USB is connected.

RE: Can I transfer file to QSPI external flash over USB ?

AndreasF — Thu, 27 Dec 2018 08:45:05 GMT

Hi.

Did you follow the test procedure in the example?

Test the USB MSC Example application by performing the following steps:

Compile and program the application.
Connect the development kit to the host computer through the J-Link port.
Start a terminal emulator like PuTTY and connect to the used COM port with the following UART settings:
- Baud rate: 115.200
- 8 data bits
- 1 stop bit
- No parity
- HW flow control: None
Observe the debug output.
Press the buttons on the development kit and observe the results on the host computer terminal.
Connect the development kit to the host computer through the USB device port.
Device will enumerate as a Mass Storage Class with multiple disk instances.
Try pressing Button 1 to create a file. Manipulating the file system from the development kit will not be possible while USB is connected.
Disconnect the USB cable (from the USB device port) and the development kit buttons will be functional again.

Best regards,

Andreas

RE: Can I transfer file to QSPI external flash over USB ?

Justin_Yeh — Tue, 25 Dec 2018 02:45:24 GMT

Hi Sir

I can see mass storage interface at windows 7 now,

but I have no idea how to put file to mass storage from PC to device ?

PC always shows "Do you want format storage" ? but I tried to format storage always get failed.

RE: Can I transfer file to QSPI external flash over USB ?

AndreasF — Wed, 03 Oct 2018 08:19:05 GMT

Hi.

Which revision of the board do you have?

You can read the packet variant on the chip, the middle number, like this:

A table for each packet variant with corresponding revision is here.

Do you have any log outputs you can share?

- Andreas

RE: Can I transfer file to QSPI external flash over USB ?

Justin_Yeh — Wed, 03 Oct 2018 01:35:47 GMT

I can't see all interfaces.

RE: Can I transfer file to QSPI external flash over USB ?

AndreasF — Tue, 02 Oct 2018 12:13:25 GMT

Hi.

Is it only USB-QSPI you can't see? can you see other disks emulate and do they appear in the main directory? Can you create files and read them?

- Andreas

RE: Can I transfer file to QSPI external flash over USB ?

Justin_Yeh — Tue, 02 Oct 2018 08:53:07 GMT

USB_MSC example is workable on Windows 7 ? because I can't find USB-QSPI disk interfaces on my laptop, but windows 10 is good.

RE: Can I transfer file to QSPI external flash over USB ?

AndreasF — Thu, 20 Sep 2018 08:26:41 GMT

Hi.

Yes, but the QSPI only has 8 MB serial flash memory.

8.Try pressing Button 1 to create a file. Manipulating the file system from the development kit will not be possible while USB is connected.

That is correct.

In the example guide: 5. Press the buttons on the development kit and observe the results on the host computer terminal.

The button assignments are:

- Button 1 creates a randomly named file in the root directory.
- Button 2 lists the root directory.
- Button 3 creates a file system (equivalent of the format command).

This example allows you to manipulate the file system (on QSPI memory) only while USB is not connected. If USB is connected, access to the file system from a user application is not possible because MSC is not designed to allow access to the file system from multiple sources.

So when you have the USB connected, and try to press button 1 to create a new file, manipulating the file system from the development kit will not be possible.
If you see point 9, this works again after you disconnect the USB cable.

Also, if you only want QSPI you should remove:

    NRF_BLOCKDEV_BASE_ADDR(m_block_dev_ram, block_dev),     \
    NRF_BLOCKDEV_BASE_ADDR(m_block_dev_empty, block_dev),   \

From:

#define BLOCKDEV_LIST() (                                   \
    NRF_BLOCKDEV_BASE_ADDR(m_block_dev_ram, block_dev),     \
    NRF_BLOCKDEV_BASE_ADDR(m_block_dev_empty, block_dev),   \
    NRF_BLOCKDEV_BASE_ADDR(m_block_dev_qspi, block_dev)     \
)

In main.c line 196.

- Andreas

RE: Can I transfer file to QSPI external flash over USB ?

Justin_Yeh — Thu, 20 Sep 2018 06:41:27 GMT

Can I put my laptop's file, such as .zip file to usb mass storage ?

8.Try pressing Button 1 to create a file. Manipulating the file system from the development kit will not be possible while USB is connected.

RE: Can I transfer file to QSPI external flash over USB ?

AndreasF — Thu, 20 Sep 2018 06:35:07 GMT

Hi.

There is an example which does this that you can take a look at. You can find it in SDK 15.2 (download here).

The location is: nRF5_SDK_15.2.0_9412b96\examples\peripheral\usbd_msc and the example is called usbd_msc.

More information about the project is found in the infocenter here.

- Andreas