Title: Zephyr File System Demo
Description:
Demonstrates basic file and dir operations using the Zephyr file system.
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Building and Running Project:
The demo will run on Arduino 101 and will use the on-board SPI flash.
make BOARD=arduino_101
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Troubleshooting:
Problems caused by out-dated project information can be addressed by
issuing one of the following commands then rebuilding the project:
make clean # discard results of previous builds
# but keep existing configuration info
or
make pristine # discard results of previous builds
# and restore pre-defined configuration info
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Sample Output:
File System Demo!
Creating new file testfile.txt
Opened file testfile.txt
Data successfully written!
Data written:"hello world!"
Data successfully read!
Data read:"hello world!"
Data read matches data written!
Truncate tests:
Testing shrink to 0 size
Testing write after truncating
Data successfully written!
Data written:"hello world!"
Original size of file = 12
File size after shrinking by 5 bytes = 7
Check original contents after shrinking file
Data successfully read!
Data read:"hello w"
File size after expanding by 10 bytes = 17
Check original contents after expanding file
Data successfully read!
Data read:"hello w"
Testing for zeroes in expanded region
Closed file testfile.txt
File (testfile.txt) deleted successfully!
Created dir sub1!
Creating new file testfile.txt
Opened file testfile.txt
Creating new file sub1/testfile.txt
Opened file sub1/testfile.txt
Data successfully written!
Data written:"1"
Data successfully written!
Data written:"12"
Closed file testfile.txt
Closed file sub1/testfile.txt
Listing dir /:
[DIR ] SUB1
[FILE] TESTFILE.TXT (size = 1)
Listing dir sub1:
[FILE] TESTFILE.TXT (size = 2)
Removing files and sub directories in sub1
Removing sub1/TESTFILE.TXT
Removed dir sub1!
Optimal transfer block size = 512
Allocation unit size = 512
Volume size in f_frsize units = 152
Free space in f_frsize units = 151
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