topic Re: UART Boot Loader Design - AN4767 & AN4767SW in Kinetis Microcontrollers

UART Boot Loader Design - AN4767 & AN4767SW

jeniabrook — Mon, 04 Jul 2016 09:20:36 GMT

Hello all,

Eventually I decided to follow up "UART Boot Loader Design on Kentis E Series" document.

I have KE06Z128. I've downloaded AN4767SW and integrated it in KDS and configured UART for communication.

Also downloaded AN2295 PC side host GUI for tools to decode the s19 file and transfer the application code to target MCU by UART interface.

When I run with debugger and connect to the AN2295 GUI, it communicates and get the IDENT info:

But when I'm trying to 'Erase' or 'Program' it fails:

my configurations from FC_protocol.h:

MyBlink.srec is just mine little program to test the serial boot loader, I've test it, work good.

What could be the problem?

Jenia.

Re: UART Boot Loader Design - AN4767 & AN4767SW

jeremyzhou — Tue, 05 Jul 2016 02:39:16 GMT

Hi Jenia,

I was wondering if you can illustrate the whole procedures of porting the demo from the IAR to the KDS.

I'll appreciate a lot if you can upload the demo, then I can replicate the issue on my site and it can accelerate the investigation of the issue.

I'm looking forward to your reply.
Have a great day,
Ping

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Re: UART Boot Loader Design - AN4767 & AN4767SW

jeniabrook — Tue, 05 Jul 2016 06:02:34 GMT

Hi Ping,

I've created new project in KDS with PE, added UART component for communication and IntFlash for write/erase the flash.

In main() function added the code from the source in "Bootloader_sci.c". In addition added "FC_Protocol.c" & "FC_Protocol.h" to the project and updated the relevant functions for communication and write/erase the flash with ones from PE.

I don't know how to upload the .zip file to this thread, so I uploaded it to mine google drive with shareable link:

Bootloader.rar - Google Drive

Thank you for your help.

BR,

Jenia

Re: UART Boot Loader Design - AN4767 & AN4767SW

jeremyzhou — Tue, 05 Jul 2016 11:02:57 GMT

Hi Jenia,

Regarding to the kind of issue, I'd highly recommend you to capture the waveform by oscilloscope when click the Erase and Program buttons, then compare the captured waveform with the Fig 1 illustrates.

Hope it helps.
Have a great day,
Ping

Re: UART Boot Loader Design - AN4767 & AN4767SW

jeniabrook — Wed, 06 Jul 2016 05:53:37 GMT

Thank you.

The problem was in communications. I've checked accordingly to the protocol that you posted here, the address that I received was wrong maybe due to polling in UART.

Switched to interrupts in UART and that solved the problem.

BR,

Jenia

Re: UART Boot Loader Design - AN4767 & AN4767SW

huyrua291996 — Thu, 21 Sep 2017 16:39:08 GMT

Hi, I also got the problem like you, but it still didnt work

Did you use UART interrupt for RX or both RX, TX. If both, how did you do

And do you use RTS CTS?