making symbian development easier with fshell: a console environment for the symbian platform
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8/8/2019 Making Symbian Development Easier with FShell: A Console Environment for the Symbian Platform
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Making Symbian Development Easier
Introducing fshell: A Console
Environment for the Symbian Platform
Tom Sutcliffe
Accenture Embedded Software Services
8/8/2019 Making Symbian Development Easier with FShell: A Console Environment for the Symbian Platform
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8/8/2019 Making Symbian Development Easier with FShell: A Console Environment for the Symbian Platform
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What is fshell?
•An interactive command-line shell for SymbianOS
•Supporting remote connections to the device
•Plus a suite of command-line tools
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Why should I care?
(As a developer, that is!)
•Command lines are quicker to debug on, and
work with, than GUIs
•Doing it remotely from your PC is quicker still
•All the included tools are really useful
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Dependencies, Dependencies,Dependencies!
•The more you have...
...the more difficult things become
•Fshell has very few fixed dependencies• Meaning it can work on almost any setup
• Production handset, prototype, textshell dev board...
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Demo
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Examples (2) - ECOM
# Test if ECOM can load itc:\>ecom create 0x12345678
Error: Couldn't instantiate plugin 0x12345678 : KErrNotFound (-1)
# Try loading the DLL manually, see if it's a
# linkage problem or an ECOM-specific problem c:\>load myplugin.dll
Error: Unable to load "myplugin.dll" : KErrNotFound (-1)
# See if chkdeps reports any DLL dependencies missing
c:\>chkdeps c:\sys\bin\myplugin.dll
Number of dependencies checked = 10
2: mymissingdependency.dll Uid3: [12340000] --- File was not found
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Tips & Tricks (1) - ymodem
•The „ymodem‟ command can be used to uploadnew code live onto the device
(PlatSec permitting! Also some other caveats)
c:\>ymodem receive --overwrite c:\sys\bin\
Please start the file transfer in your terminal...
Successfully received "c:\sys\bin\myapp.exe".
c:\>
c:\>kill --match myapp*
Killed myapp.exe[e0286b46]0001 (id=388) with 0
c:\>myapp.exe &
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Tips & Tricks (2) - Scripting
•Fshell supports scripting, to automate repetitivetasks
•Syntax is fairly similar to DOS or sh
•Decent error handling, environment variables,conditional execution...
•The fshell smoke tests themselves are written
as fshell scripts• As is Autometric
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Writing fshell-based tools
•Very quick to develop new command-line apps• For anything from a quick hack or test app, to additions to the
fshell tool suite itself
•Example: the “showdebug” command
• Writing code for initial version: 23 minutes
• Adding to build system, compilation errors etc: 8 mins
• Deploying to device & running for first time: 1 minute
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For more information
http://developer.symbian.org/wiki/index.php/Fshell
Forums Kernel and Hardware Adaptation
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