topic Re: K64 enter in bootloader from user application in order to upload a new application in Kinetis Microcontrollers

K64 enter in bootloader from user application in order to upload a new application

julien_gosteli — Tue, 12 Nov 2019 08:01:29 GMT

I would like to update my firmware remotely by pushing my microcontroller (MK64FN1M0VLQ12) in bootloader mode and send the new application via UART.

How do I enter in the bootloader mode through my application in order to send the new firmware by the UART.

I try this,
#define BL_VECTORS 0x0
uint32_t run_bootloader;

/**
* Step: Disable systick timer and reset it to default values
*/
SysTick->CTRL = 0;
SysTick->LOAD = 0;
SysTick->VAL = 0;

/**
* Step: Disable all interrupts
*/
__disable_irq();

/**
* Jump to boot_loader
*/
run_bootloader = ((uint32_t*)BL_VECTORS)[1];
((void(*)(void))run_bootloader)();

My application make a reset and restart my application.

Thank you in advance.

Julien

Re: K64 enter in bootloader from user application in order to upload a new application

FelipeGarcia — Thu, 14 Nov 2019 17:12:09 GMT

Hi Julien,

You can send your MCU to bootloader mode by simply calling NVIC_SystemReset(). Please check the following thread for further reference.

https://community.nxp.com/message/1141791

Hope it helps!

Have a great day,
Felipe

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