OsmocomBB » Nuttx-bb

To compile nuttx-bb with sercomm, do the following steps:

 * Clone osmocom-bb and nuttx-bb, they must reside in the same directory and you shouldn't change the name of the osmocom-bb directory.

{{{

git clone git://git.osmocom.org/osmocom-bb

git clone git://git.osmocom.org/nuttx-bb

}}}

 * Put the gnuarm(for 64bit) or the codesourcery(for 32bit)

  in your path(there is a problem with gnuarm for 32bit).

 * Compile osmocom-bb as usual

{{{

cd osmocom-bb/src

make

cd ../../

}}}

 * Configure nuttx-bb:

{{{

cd nuttx-bb/nuttx/tools/

./configure.sh compal_e88/nsh_highram #for compal_e88( gta02 and Motorola W220).

./configure.sh compal_e99/nsh_highram #for compal_e99( motorolla c155 )

}}}

 * Modify your configuration(nuttx/.config):

{{{

-CONFIG_SERCOMM_CONSOLE=n

+CONFIG_SERCOMM_CONSOLE=y

-CONFIG_STDIO_LINE_BUFFER=y

}}}

 * compile nuttx-bb:

{{{

cd ../

make

}}}

 * nuttx.bin is ready for beeing loaded like any other firmware (Loading nuttx-bb is not different from loading osmocom-bb, refer to the pages related to osmocom-bb for informations on how to load a firmware in your phone.)

== Running ==

Once you loaded nuttx-bb you should see the following appearing on sercomm:

{{{

[...]

Preparing block 61, block checksum is 0xda 

handle_write_block(): 1024 bytes (1024/1024)

handle_write_block(): Block 61 finished

Received block ack from phone

Preparing block 62, block checksum is 0xd8 

handle_write_block(): 1024 bytes (1024/1024)

handle_write_block(): Block 62 finished

Received block ack from phone

Preparing the last block, filling 386 bytes, block checksum is 0xaf 

handle_write_block(): 1024 bytes (1024/1024)

handle_write_block(): Block 63 finished

Finished, sent 63 blocks in total

Received block ack from phone

Sending checksum: 0x0e 

Checksum on phone side matches, let's branch to your code

Branching to 0x00820000

Received branch ack, your code is running now!

NuttShell (NSH)

}}}

To interact with it run the loadwriter.py script that can be found in nuttx/drivers/sercomm/loadwriter.py in the nuttx sources.

{{{

sudo ./loadwriter.py 

>help

}}}

will produce the following output on sercomm:

{{{

nsh> help

Builtin Apps: 

and type 'help' for more NSH commands.

NSH command forms:

  [nice [-d <niceness>>]] <cmd> [> <file>|>> <file>] [&]

OR

  if <cmd>

  then

    [sequence of <cmd>]

  else

    [sequence of <cmd>]

  fi

Where <cmd> is one of:

  [ <expression> ]

  cat <path> [<path> [<path> ...]]

  cp <source-path> <dest-path>

  dd if=<infile> of=<outfile> [bs=<sectsize>] [count=<sectors>] [skip=<sectors>]

  echo [<string> [<string>...]]

  exec <hex-address>

  exit

  free

  help

  kill -<signal> <pid>

  losetup [-d <dev-path>] | [[-o <offset>] [-r] <dev-path> <file-path>]

  ls [-lRs] <dir-path>

  mb <hex-address>[=<hex-value>][ <hex-byte-count>]

  mkfifo <path>

  mh <hex-address>[=<hex-value>][ <hex-byte-count>]

  mw <hex-address>[=<hex-value>][ <hex-byte-count>]

  ps

  sh <script-path>

  sleep <sec>

  test <expression>

  usleep <usec>

  xd <hex-address> <byte-count>

nsh> 

}}}