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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2539 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2010-02-23 03:56:25 +00:00
parent f4eee7663d
commit 756cb31808
1 changed files with 32 additions and 4 deletions
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configs/ea3131/README.txt
+32 -4
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@@ -13,6 +13,8 @@ Contents
o NuttX buildroot Toolchain o NuttX buildroot Toolchain
o Boot Sequence o Boot Sequence
o Image Format o Image Format
o Image Download to ISRAM
o Using OpenOCD and GDB
o ARM/EA3131-specific Configuration Options o ARM/EA3131-specific Configuration Options
o Configurations o Configurations
@@ -194,8 +196,27 @@ Image Format
If you don't use setenv.sh, then just set your PATH variable appropriately or If you don't use setenv.sh, then just set your PATH variable appropriately or
use the full path to mklpc.sh in the final step. use the full path to mklpc.sh in the final step.
OpenOCD Image Download to ISRAM
^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^
Assuming that you already have the FTDI driver installed*, then here is the
are the steps that I use for loading new code into the EA3131:
- Create the bootloader binary, nuttx.lpc, as described above.
- Connected the EA3131 using the FTDI USB port (not the lpc3131 USB port)
This will power up the EA3131 and start the bootloader.
- Start a terminal emulator (such as TeraTerm) at 115200 8NI.
- Reset the EA3131 and you should see:
LPC31xx READY FOR PLAIN IMAGE>
- Send the nuttx.lpc file and you should see:
Download finished
That will load the NuttX binary into ISRAM and attempt to execute it.
*See the LPC313x documentation if you do not have the FTDI driver installed.
Using OpenOCD and GDB
^^^^^^^^^^^^^^^^^^^^^
I have been using the Olimex ARM-USB-OCD JTAG debugger with the EA3131 I have been using the Olimex ARM-USB-OCD JTAG debugger with the EA3131
(http://www.olimex.com). The OpenOCD configuration file is here: (http://www.olimex.com). The OpenOCD configuration file is here:
@@ -210,15 +231,22 @@ OpenOCD
Then you should be able to start the OpenOCD daemon like: Then you should be able to start the OpenOCD daemon like:
tools/oocd.sh <topdir> configs/ea3131/tools/oocd.sh $PWD
Where <topdir> is the directory where NuttX is installed. Where it is assumed that you are executing oocd.sh from the top level
directory where NuttX is installed.
Once the OpenOCD daemon has been started, you can connect to it via Once the OpenOCD daemon has been started, you can connect to it via
GDB using the following GDB command: GDB using the following GDB command:
arm-elf-gdb
(gdb) target remote localhost:3333 (gdb) target remote localhost:3333
And you can load the NuttX ELF file:
(gdb) symbol-file nuttx
(gdb) load nuttx
ARM/EA3131-specific Configuration Options ARM/EA3131-specific Configuration Options
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
CONFIG_ARCH - Identifies the arch/ subdirectory. This should CONFIG_ARCH - Identifies the arch/ subdirectory. This should