LPC MicrocontrollersのトピックRe: Hex file for IAP in lpc1788

Hex file for IAP in lpc1788

rameshlalji9595 — Fri, 26 Jun 2020 10:47:05 GMT

Hello Everyone

I'm looking for how to read hex file from USB (USB Interfaced successfully) and decode the data in RAM for write into internal flash of lpc1788 for In-Application Programming. In which format data should be read and write into flash ? If anyone has sample code that would be grateful.

Thanks in advance.

Re: Hex file for IAP in lpc1788

Alice_Yang — Wed, 01 Jul 2020 10:51:42 GMT

Hello Ramesh Lalji ,

You can google HEX file format, know meaning of each part, then you will know which part should write into flash.

GENERAL: INTEL HEX FILE FORMAT

And it seems you are working on a second bootloader, there are some application, you can refer to:

https://www.nxp.com/docs/en/application-note/AN10866.zip

https://www.nxp.com/docs/en/application-note/AN11628.zip

Regards,

Alice

Re: Hex file for IAP in lpc1788

rameshlalji9595 — Sat, 04 Jul 2020 12:29:08 GMT

Hello Alice_Yang
Thanks for sharing information. Its really helpful for me.
But I'm actually working on code (Not like bootloader) that update firmware from USB when needed.
And I wrote hex file to flash but I couldn't jump to my loaded code. Ir repeat code that existing in it.

Does Hex file starting address should be same as flash starting address?

Thanks in advance

Re: Hex file for IAP in lpc1788

Alice_Yang — Wed, 08 Jul 2020 07:35:41 GMT

Hi Ramesh,

There is address information in Hex file,for example the below hex file, the highlight part is address.

You should refer to your hex file to flash.

BTW, you use USB update firmware, which memory you put the USB related code ?

Regards

Alice