The purpose of this application is to allow easy manipulation of the QSPI file system from a PC
Dependencies: EALib USBDevice mbed
The purpose of this application is to allow easy manipulation of the QSPI file system from a PC.
The application makes the LPC4088 QuickStart Board appear as a USB Memory Stick when connected to a PC. The PC will see the current content of the QSPI file system plus an image file of the file system that can be downloaded and (at a later time) be used to restore the file system to it's current state.
To use this application:
- Make sure that the QSPI file system has been formatted (using either the app_qspi_format application or one of the erase.* images).
- Download the app_qspifs_memstick application using drag-n-drop and then reset the board
- Optionally start a terminal program to read the status messages from the application
- Connect a USB cable to the micro USB slot on the back of the LPC4088 QuickStart Board, underneath the ethernet connector, and then to the PC
- The PC will install drivers if needed and then the USB Memory Stick will be available as a new drive
- Modify the file system to suit your needs
- With the USB cable still connected, press the button on the LPC4088 QuickStart Board
- The application will now:
- disconnect the USB Memory Stick
- write all changes to the QSPI flash memory
- create a new image file of the updated QSPI file system and store it in the .current/ folder
- connect the USB Memory Stick again
- Continue from step 6. until satisfied
Note 1: The file system that is exposed is a copy (in SDRAM) of the QSPI file system. The reason for this is that the USBMSD class requires a FAT file system.
Note 2: The image files created in step 8.3 above will be a *.fsX file (where the 'X' is the size of the file system in MB so *.fs1 for a 1MByte file system). The *.fsX file extensions are recognized by the HDK and can be used to drag-n-drop to the MBED drive in the same way as the *.bin files are. A *.fsX file will not overwrite the program stored in internal flash.
USBMSD_RAMFS.cpp@0:bd0d999bb6fb, 2013-09-26 (annotated)
- Committer:
- embeddedartists
- Date:
- Thu Sep 26 09:21:11 2013 +0000
- Revision:
- 0:bd0d999bb6fb
- Child:
- 2:5a954ee65b33
First version
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
embeddedartists | 0:bd0d999bb6fb | 1 | #include "USBMSD_RAMFS.h" |
embeddedartists | 0:bd0d999bb6fb | 2 | |
embeddedartists | 0:bd0d999bb6fb | 3 | USBMSD_RAMFS::USBMSD_RAMFS(RAMFileSystem* ramfs, uint16_t vendor_id, uint16_t product_id, uint16_t product_release) : |
embeddedartists | 0:bd0d999bb6fb | 4 | USBMSD(vendor_id, product_id, product_release) |
embeddedartists | 0:bd0d999bb6fb | 5 | { |
embeddedartists | 0:bd0d999bb6fb | 6 | this->ramfs = ramfs; |
embeddedartists | 0:bd0d999bb6fb | 7 | } |
embeddedartists | 0:bd0d999bb6fb | 8 | |
embeddedartists | 0:bd0d999bb6fb | 9 | int USBMSD_RAMFS::disk_read(uint8_t * data, uint64_t block) |
embeddedartists | 0:bd0d999bb6fb | 10 | { |
embeddedartists | 0:bd0d999bb6fb | 11 | return ramfs->disk_read(data, block); |
embeddedartists | 0:bd0d999bb6fb | 12 | } |
embeddedartists | 0:bd0d999bb6fb | 13 | |
embeddedartists | 0:bd0d999bb6fb | 14 | int USBMSD_RAMFS::disk_write(const uint8_t * data, uint64_t block) |
embeddedartists | 0:bd0d999bb6fb | 15 | { |
embeddedartists | 0:bd0d999bb6fb | 16 | return ramfs->disk_write(data, block); |
embeddedartists | 0:bd0d999bb6fb | 17 | } |
embeddedartists | 0:bd0d999bb6fb | 18 | |
embeddedartists | 0:bd0d999bb6fb | 19 | int USBMSD_RAMFS::disk_initialize() { |
embeddedartists | 0:bd0d999bb6fb | 20 | return ramfs->disk_initialize(); |
embeddedartists | 0:bd0d999bb6fb | 21 | } |
embeddedartists | 0:bd0d999bb6fb | 22 | |
embeddedartists | 0:bd0d999bb6fb | 23 | uint64_t USBMSD_RAMFS::disk_sectors() { |
embeddedartists | 0:bd0d999bb6fb | 24 | return ramfs->disk_sectors(); |
embeddedartists | 0:bd0d999bb6fb | 25 | } |
embeddedartists | 0:bd0d999bb6fb | 26 | |
embeddedartists | 0:bd0d999bb6fb | 27 | uint64_t USBMSD_RAMFS::disk_size() { |
embeddedartists | 0:bd0d999bb6fb | 28 | return ramfs->disk_size(); |
embeddedartists | 0:bd0d999bb6fb | 29 | } |
embeddedartists | 0:bd0d999bb6fb | 30 | |
embeddedartists | 0:bd0d999bb6fb | 31 | int USBMSD_RAMFS::disk_status() { |
embeddedartists | 0:bd0d999bb6fb | 32 | return ramfs->disk_status(); |
embeddedartists | 0:bd0d999bb6fb | 33 | } |
embeddedartists | 0:bd0d999bb6fb | 34 | |
embeddedartists | 0:bd0d999bb6fb | 35 |