Is it possible to talk to MCU bootloader without using blhost?

[longzhao1]

I am creating a web-based serial monitor to connect to a board. This monitor now could connect to the device, send commands and listen for responses. I am thinking about adding the flash feature to the serial monitor. Currently I flash the device using blhost commands. I am wondering that if it is possible to directly send some bytes of data to the board to trigger the flash process. I am not very familiar with the embedded system, so could anyone helps me on this?

[kerryzhou]

Hi Long Zhao ,

   What's the nxp chip you are using?

   If it is the flash bootloader, you totally can modify the flash bootloader code to meet your own demand.

  The bootloader code can be found in the KSDK download package:

  Welcome | MCUXpresso SDK Builder 

   When you select the chip, in the middleware, please also select the mcu-boot.  

   If you don't want to use the blhost, just want to receive some specific data, you can write your own bootloader, just refer to the official bootloader code.

Wish it helps you!

Have a great day,
Kerry

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[longzhao1]

Hi Kerry

Thanks for the response. I am using a confidential nxp chip for my company business usage. I didn't find my board on the link you provided to me. It's not convenient to talk about my question at here, is it possible that we could communicate the problem offline privately using hangouts, wechat or phone calls? Thank you so much.

[kerryzhou]

Hi Long Zhao,

    If your question is confidential, it's better to create the case in the NXP technical service:

https://nxpcommunity.force.com/community/CommunityContextPage?cf=General&subcf=Sectional+Navigation+... 

  Then you can write your chip, and the related questions, the case will support you through the email, it is not public.

Have a great day,
Kerry

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Note:
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- We are following threads for 7 weeks after the last post, later replies are ignored
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