Making Symbian Development Easier with FShell: A Console Environment for the Symbian Platform

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



Copyright © 2010 Accenture All Rights Reserved. Accenture, its logo, and High Performance Delivered are trademarks of Accenture.



What is fshell?

•An interactive command-line shell for SymbianOS

•Supporting remote connections to the device

•Plus a suite of command-line tools

3 © 2010 Accenture All Rights Reserved.



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




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



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




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 &




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




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




For more information

http://developer.symbian.org/wiki/index.php/Fshell

Forums Kernel and Hardware Adaptation







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Making Symbian Development Easier with FShell: A Console Environment for the Symbian Platform

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