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x-flash and data partition + OTP programming

Posted: Thu Apr 26, 2012 11:16 pm
by kster59
I want to store some data in the Flash. In the manual it says the default boot partition is the entire boot partition is 0 bytes. How do I specify / allocate some space on the data partition? I looked through the documentation but could not find it. I would assume it should be an Xflash command when writing the initial flash to the device.

Also I've been using the OTP with the AES loader. The AES loader is created and burned into OTP but I can't modify it since there is no source. Is this available or is there a way to store additional information into the OTP (serial number/mac address) and read it back out?

Often times I want to serialize the device and issue firmware updates to my customers but do not want the firmware update to overwrite the serialized data. It's best if I could write this into OTP and read out parts of the OTP but as a current workaround I can settle for writing into the data partition of the flash which wouldn't be erased with a firmware update.

Re: x-flash and data partition + OTP programming

Posted: Fri Apr 27, 2012 5:01 am
by Bianco
kster59 wrote:I want to store some data in the Flash. In the manual it says the default boot partition is the entire boot partition is 0 bytes. How do I specify / allocate some space on the data partition? I looked through the documentation but could not find it. I would assume it should be an Xflash command when writing the initial flash to the device.
try xflash with the following option:
--boot-partition-size <n>
Specify the size of the boot partition as <n> bytes
The remaining space will be the data partition.

Re: x-flash and data partition + OTP programming

Posted: Mon May 28, 2012 11:27 am
by shyamkrish8iitm
In the command window, I typed

xflash -target=XK-1A --boot-partition-size 120000

I am getting a message, "ERROR: F03021 No input archive specified

Re: x-flash and data partition + OTP programming

Posted: Mon May 28, 2012 11:54 am
by Bianco
shyamkrish8iitm wrote:In the command window, I typed

xflash -target=XK-1A --boot-partition-size 120000

I am getting a message, "ERROR: F03021 No input archive specified
You need to specify the XE file in order for xflash to know what to flash :)

Re: x-flash and data partition + OTP programming

Posted: Tue May 29, 2012 6:01 am
by JohnWilson
Just out of curiosity, is there a way to do this in the IDE settings or do you have to do the xflash command by hand to have a data partition?

Re: x-flash and data partition + OTP programming

Posted: Tue May 29, 2012 1:11 pm
by XMatt
JohnWilson wrote:Just out of curiosity, is there a way to do this in the IDE settings or do you have to do the xflash command by hand to have a data partition?
Yes there is a flash configurations menu which allows you to input these settings and flash the device.
flash_configurations.png
(68.88 KiB) Not downloaded yet
flash_configurations.png
(68.88 KiB) Not downloaded yet

Re: x-flash and data partition + OTP programming

Posted: Tue May 29, 2012 7:00 pm
by JohnWilson
No idea why I had trouble finding that before. Beautiful -- thanks!!!