Kinetis Bootloader_K22F_Help

[sunilkumar_sing]

Dear Expert,

I need some description for  "Customize Boot loader" to upgrade firmware application on K22F over the  UART.

I downloaded bootloader from Kinetis Bootloader|Freescale

And  able to compile and updated the bootloader then In application I updated memory location in linker files and it is working fine.

But I am not able to understand the entire process. So Can you please guide/suggest me the exact path/setting to meet this expectation correctly.

Let me know if more inputs required.

Regards,

Sunil

[Alice_Yang]

Hello Sunil,

Does this can help you :"...\ FSL_Kinetis_Bootloader_1_2_0\FSL_Kinetis_Bootloader_1_2_0\doc " -> 2.4 Start-up process  .

There also have a "Figure 2-1. Kinetis bootloader start-up flowchart" .

Hope it helps!

Have a great day,
Alice

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[sunilkumar_sing]

Hi Alice,

Thanks for the reply and looking into it.

As above mentioned, I am able to upgrade my application after updated few fields in linker file:

MEMORY {

  m_interrupts          (RX)  : ORIGIN = 0x00000000, LENGTH = 0x00000400

  m_flash_config        (RX)  : ORIGIN = 0x00000400, LENGTH = 0x00000010

  m_interrupts_ram      (RW)  : ORIGIN = 0x1FFF0000, LENGTH = 0x00000400

  m_text                (RX)  : ORIGIN = 0x00000410, LENGTH = 0x0007FBF0

  m_data                (RW)  : ORIGIN = 0x1FFF0400, LENGTH = 0x0000FC00

  m_data_2              (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00010000

}

But  there are some issue with the application which is not running every time.

Demo led app is working fine.

I am trying to find the root cause of this issue.

Regards,

Sunil

[Alice_Yang · Accepted solution]

Hello Sunil,

Please try :

MEMORY {

  m_interrupts          (RX)  : ORIGIN = 0x0000A000, LENGTH = 0x00000400

  m_flash_config        (RX)  : ORIGIN = 0x0000A400, LENGTH = 0x00000010

  m_interrupts_ram      (RW)  : ORIGIN = 0x1FFF0000, LENGTH = 0x00000400

  m_text                (RX)  : ORIGIN = 0x0000A410, LENGTH = 0x00070000

  m_data                (RW)  : ORIGIN = 0x1FFF0400, LENGTH = 0x0000FC00

  m_data_2              (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00010000

}

For we need configure the uer's Application code from 0xA000 ,  you can refer to this DOC :

Kinetis Bootloader Demo Applications User's Guide.pdf

BR

Alice

[sunilkumar_sing]

Hi Alice,

Problem is same after changing the map,  some time it  is working some time not.

I have also tried to change the map address as per recommendation. 

During debugging I found the below:

- Demo Led Apps:

app starting address - 0xa3e1

stack pointer - 0x1fff0400

- My app:

app starting address - 0xa4d9

stack pointer - 0x20010000

Can it  cause the problem ?

Regards,

Sunil

[sunilkumar_sing]

Hi Alice,

Did you get the chance to look and How can we configure/program BCA ?

Thanks,

Sunil

[sunilkumar_sing]

Hi Alice,

The issue has resolved just I created a new program without processor expert and its running fine.

I modified the following memory map:

MEMORY {

  m_interrupts          (RX)  : ORIGIN = 0x0000A000, LENGTH = 0x00000400

  m_flash_config        (RX)  : ORIGIN = 0x0000A400, LENGTH = 0x00000010

  m_interrupts_ram      (RW)  : ORIGIN = 0x1FFF0000, LENGTH = 0x00000400

  m_text                (RX)  : ORIGIN = 0x0000A410, LENGTH = 0x00070000

  m_data                (RW)  : ORIGIN = 0x1FFF0400, LENGTH = 0x0000FC00

  m_data_2              (RW)  : ORIGIN = 0x20000000, LENGTH = 0x00010000

}

Thanks for the help.

Sunil

[Alice_Yang]

Hello Sunil,

I have test on my side , create a PE project about k22 , please see the attachment .

In the PE project , we need configure some place when use the KBOOT:

- in the linker file :

 

- disable the "generate linker file" :

then the .bin file can work well on KBOOT, you can test it .

Hope it helps

Have a great day,
Alice

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[sunilkumar_sing]

Hi Alice,

Thanks a lot, It is working fine for me as well.

I have customized the blhost utility to upgrade the firmware of K22F for Linux environment.

But In my project I am using two K22F MCU for different purpose.

Connection is like:

My use case is : MCU-2 firmware will be updated from Host and MCU-1 will be updated via MCU-2 over the UART.

I am confirming the feasibility and approche.

Please provide your inputs/suggestion.

Regards,

Sunil

[sunilkumar_sing]

Hi Alice,

Hope you are doing good.

I am trying  to add gpio check in bootloader code, means:

When the system  is in bootloader mode the status of gpio should be high otherwise low.

I am not able to found the place where I can put the logic.

Another thing Is it possible to connect device in bootloader mode with defined baudrate instead of auto baud.

Your early help will be much appreciated.

Regards,

Sunil

[Alice_Yang]

Hello Sunil,

1. About your MCU1 - MCU2 mode , i have not test , and i think it can realize after you change the code of KBOOT

  successfully, while i have never change the code before .

2. For all of your question , they are all need reading the KBOOT code in detail , then change the baud rate ,

     and also configure the GPIO .

For these days , i'm going to port one bootloader to FRDM-K22 board , if you need , after i finish it , i can send to you .

BR

Alice

[sunilkumar_sing]

Hi Alice,

Yes we are  reading the KBOOT  code in details.

Sure you can share with me once you finish this part.

Mean while I am also working on it and will share my findings as well.

Regards,

Sunil

[Alice_Yang]

Hello Sunil,

Ok !

And i recommend you summit another question about the problem just now , and the related expert will check it and help you .

BR

Alice

[Alice_Yang]

Hello Sunil,

For last week, i went on a business trip, sorry for reply you late, and first congratulation to you have solved it .

And do you meaning you use the same modified memory map , it can work well on the project without PE, and

it can not work with  PE project ?  I will test i on my side .

BR

Alice