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Updated README

This commit is contained in:
Gregory Nutt 2013-11-18 19:07:49 -06:00
parent 6cded05be3
commit 9986d22e19
1 changed files with 48 additions and 20 deletions
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68
configs/olimex-lpc-h3131/README.txt
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@ -197,7 +197,7 @@ Buttons and LEDs
Buttons
-------
There are not user buttons on the H3131
There are no user buttons on the H3131
LEDs
----
@ -289,30 +289,58 @@ Image Format
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 LPC-H3131:
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 LPC-H3131:
- Create the bootloader binary, nuttx.lpc, as described above.
- With the power off, set the boot jumpers to enable booting from UART.
The boot jumpers are the block of three jumper just in-board from the
JTAG connector; Jumper pair 1-2 is the pair furthest from the JTAG
connector:
1. Create the bootloader binary, nuttx.lpc, as described above.
1-2: Closed
3-4: Closed
5-6: Open
2. With the power off, set the boot jumpers to enable booting from UART.
The boot jumpers are the block of three jumper just in-board from the
JTAG connector; Jumper pair 1-2 is the pair furthest from the JTAG
connector:
- Connected the LPC-H3131 using the FTDI USB port (not the lpc3131 USB port)
This will power up the LPC-H3131 and start the bootloader.
- Start a terminal emulator (such as TeraTerm) at 115200 8NI.
- Reset the LPC-H3131 and you should see:
LPC31xx READY FOR PLAIN IMAGE>
- Send the nuttx.lpc file and you should see:
Download finished
1-2: Closed
3-4: Closed
5-6: Open
That will load the NuttX binary into ISRAM and attempt to execute it.
3. Connected the LPC-H3131 using the FTDI USB port (not the lpc3131 USB port)
This will power up the LPC-H3131 and start the bootloader.
*See the LPC313x documentation if you do not have the FTDI driver installed.
4. Start a terminal emulator (such as TeraTerm) at 115200 8NI.
5. Reset the LPC-H3131 and you should see:
LPC31xx READY FOR PLAIN IMAGE>
6. 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.
TeraTerm Note: This is how to send a file from TeraTerm. It is essentially
step 6 exploded in more detail for the case of TeraTerm:
1. Start the ROM bootloader as described above.
2. At the "LPC31xx READY FOR PLAIN IMAGE>" prompt, open the File menu and
select the "Send File..." option.
3. Select the file to send,
4. Before "Open" -ing the file MAKE SURE TO CHECK THE "Binary" BOX! This
has cost me a few hours a few times because I forget to do this. The
program will NOT RUN is sent non-binary.
[NO, I am not SHOUTING. I am just making sure that I never forget to
do this again].
5. "Open"-ing the file will send it to the ROM bootloader.
6. You should see "Download finished" from the bootloader followed
immediately by any serial console output from your program.
Using OpenOCD and GDB
=====================