From d66059094e4e6204f8b7fc0844c41003e6768f11 Mon Sep 17 00:00:00 2001 From: patacongo Date: Tue, 23 Feb 2010 03:56:25 +0000 Subject: update git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2539 42af7a65-404d-4744-a932-0658087f49c3 --- nuttx/configs/ea3131/README.txt | 36 ++++++++++++++++++++++++++++++++---- 1 file changed, 32 insertions(+), 4 deletions(-) (limited to 'nuttx/configs/ea3131/README.txt') diff --git a/nuttx/configs/ea3131/README.txt b/nuttx/configs/ea3131/README.txt index 811ff34e1..62dae965d 100755 --- a/nuttx/configs/ea3131/README.txt +++ b/nuttx/configs/ea3131/README.txt @@ -13,6 +13,8 @@ Contents o NuttX buildroot Toolchain o Boot Sequence o Image Format + o Image Download to ISRAM + o Using OpenOCD and GDB o ARM/EA3131-specific Configuration Options o Configurations @@ -194,8 +196,27 @@ Image Format 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. -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 (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: - tools/oocd.sh + configs/ea3131/tools/oocd.sh $PWD - Where 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 GDB using the following GDB command: + arm-elf-gdb (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 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ CONFIG_ARCH - Identifies the arch/ subdirectory. This should -- cgit v1.2.3