TMS320F280025: Firmware update on CAN Boot

Hi Pawan,

               Thanks for reply, we have to load the user application (Firmware update) through CAN interface in flash Bank0 or Bank1 using CAN bootloader. And  load the updated firmware from flash and run user Application from the flash.

Thanks,

Nagaraj 

Hi Pawan,

               Can we use the flash_api's  to update firmware image to the flash memory in our main Application itself and bootup with new firmware image, Is it possible to do like this?

Thanks,
Nagaraj

Hi Nagraj,

I am checking with the flash API/firmware update experts on this one.

Thanks and regards,

Pawan

Hi Nagaraj,

Yes this is possible. What you would have to implement is in your application firmware after device setup and initializations to have a function that checks the CAN Bus for a specific frame of data. If the frame of data is found (ex. 5A5A5A5A), you will proceed to download the firmware update to flash through CAN Boot. If the frame of data is not found, you would regularly continue to where your firmware's initial entry point is. You would also need a timeout if the response is not found within a certain amount of time (ex. 5 seconds). 

Let me know if you have any further questions.

Thanks,

Charles

Hi Charles,

 Thanks for reply, instead of downloading the firmware update to flash through CAN Boot, is it possible to do this in our customer's application code whenever firmware update command requested then download the firmware to flash?

Is it required to keep flash API's separate in flash sector and use same flash APIs in our customer's application code to download the new firmware and write to flash?

Thanks,

Nagaraj

Hi Nagaraj,

Yes, this method is intended for application code use.

You could keep the flash API's separate. You have could have both flash kernel which contains the API in RAM and the customer application code with API, or you could have flash kernel in Flash and use its API's when needed, which would save space for customer application code. It depends upon the amount of space the customer application code will take up.

Thanks,

Charles

Hi Charles,

              Thanks for reply, I have divided BANK0 into two image slot, Image1 slot holds address from sector 3 to 9 and image 2 slot holds firmware from address sector 10 to sector 15 address, In linker script what I can modify so that image 1 has to boot up from sector 3 i.e 0x83000 on device reset and Image 2 has to boot from sector 10 i.e 0x08A000.

How we can load the two images on device (TMS320f28002x) at particular flash address through CCS or uniflash tool?

Thanks,

Nagaraj

Hi Nagaraj,

In order to load two images on the device through CCS you could combine both .out files for a single load (.out for the application and firmware update).

In the linker script before the combining you would have each respective section mapped out for that particular image and not to cause overlap. 

I will have to provide further instruction on this tomorrow.

Charles

Hi charles,

            I’ll wait to hear from you.

Thanks,

Nagaraj

Hi Nagaraj,

Have provided update and possible call in the messages.

Thanks,

Charles