Update SW via TFTP client

[Kazarian]

Hello ,

i want to update the software on my board via TFTP,this will be usefull if the board is enclosed in a plastic or metalic cover, the idea is 

• PC will run a TFTP server containing all SW files 
• S32k will run a TFTP client that will ask (by file name) the server for the flash file
• S32k will receive the flash file and start the SW update (erase all flash memory and write).

Is there a code example for that ? I have found this example client on github, but I get always a fail in “failed to open file”.

im using the Tftpd64 as TFTP server.

Best regards.

[lukaszadrapa]

Hi Badre,

I'm afraid the answer is no, we do not have such example. We have only:

Application note “S32K1xx Bootloader” using UART:

https://www.nxp.com/docs/en/application-note/AN12218.pdf

https://www.nxp.com/docs/en/application-note-software/AN12218SW.zip

Application note “S32K1xx Firmware updates” discussing A/B swap and using CAN:

https://www.nxp.com/docs/en/application-note/AN12323.pdf

https://www.nxp.com/docs/en/application-note-software/AN12323SW.zip

And then we have lwip integrated to SDK in S32 Design Studio including SW example:

c:\NXP\S32DS.3.4\S32DS\software\S32SDK_S32K1XX_RTM_4.0.2\examples\S32K148\demo_apps\lwip\

Regards,

Lukas

[Kazarian]

Thank you Lukas,

im not aiming for Bootloader or Firmware update.

the goal is to upgrade the application software (.elf file), once a newer version, bug fix... is released i should be able to transfere and burn the file to the MCU.

Best regards.

[lukaszadrapa]

"the goal is to upgrade the application software (.elf file), once a newer version, bug fix... is released i should be able to transfere and burn the file to the MCU."

Well, this sounds like definition of the bootloader. My recommendation is to read mentioned AN12323 which should be a nice starting point.

Regards,

Lukas

[Kazarian]

Hello,

i have integrated the code to the project, the S32K148 can start the TFTP client, but i get an issue in "tftp_open_file".

Firewall UPD port 69 is open for both ongoing and outgoing packet.

TFTP server is runing and pointing to the location where the file is.

attached the source code used.

Thank a lot for the help !

[lukaszadrapa]

lwip is an open source which is integrated to SDK. We can provide only very limited support here.

https://lwip.fandom.com/wiki/Further_lwIP_support

Regards,

Lukas