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firmware upgrade using FSL kinetis bootloader 1.2.0 on FRDM k22f board

Question asked by Ronak Panchal on Aug 20, 2015
Latest reply on Aug 21, 2015 by Ronak Panchal



I am working on fsl kinetis bootloader 1.2.0 for upgrading firmware using uart on FRDM k22f board with KDS.

I have checked it with the given kinetis updater utility and uploaded the "led_demo_FRDM-K22F_a000.bin".

It's working successfully.


Now , i have developed small demo application of led blinking using processor expert which is working properly when directly tested(without bootloader).

Then i have changed linker file for bootloader application.


Given below is linker configuration for my application:


HEAP_SIZE  = DEFINED(__heap_size__)  ? __heap_size__  : 0x00;

STACK_SIZE = DEFINED(__stack_size__) ? __stack_size__ : 0x0400;

/* Specify the memory areas */


  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 = 0x00075BF0

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

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



But sometimes its working and sometimes its not working.


During debug i have found that,

(*)  demo led app :


app starting address - 0xa3e1

stack pointer - 0x1fff0400


(*) my app :


app starting address - 0xa4d9

stack pointer - 0x20010000


1) what could be the reason for such problem?


2) How to set and configure the "Bootloader configuration area"?


any help would be appreciated.

Thanks in advance..!