topic MK64F bootloader jump into Application Issue in Kinetis Microcontrollers

MK64F bootloader jump into Application Issue

chhsu0229 — Wed, 06 May 2020 16:16:24 GMT

I try to write a code that bootloader jump to application. The code is as below.

void bootloader_run(void)

{

volatile uint32_t addr = 0x40000; //Application Address

void (*entryPoint)(void);

uint32_t runBootloaderAddress ;

__DSB();
__ISB();

__set_MSP(*((volatile uint32_t *)addr));
__set_PSP(*((volatile uint32_t *)addr));

SCB->VTOR = (uint32_t)addr;

runBootloaderAddress = *((volatile uint32_t *)addr+4);

entryPoint = (void (*)(void))runBootloaderAddress;

entryPoint();

}

int main(void)

{

   /* Init board hardware. */
   BOARD_InitBootPins();
   BOARD_InitBootClocks();
   BOARD_InitBootPeripherals();

bootloader_run();

while(1)

{

}

return 0;

}

----------------------------------------------------------------------------------------------------

My application code is from address 0x40000 ~ 0x7FFFF and is as below,

It sends message via UART0 to PC period 1 sec.

I have verified the application code is work before (start address is 0x00).

uint8_t g_tipString[] = "RC-EDA example\r\n";

int main(void)

{

   BOARD_InitBootPins();
   BOARD_InitBootClocks();
   BOARD_InitBootPeripherals();

while(1)

{

UART_SendEDMA_Data(UART0, g_tipString, (sizeof(g_tipString) - 1));

Delay_MS(1000);

}

----------------------------------------------------------------------------------------------------

Flash:

0x0000 | bootloader |

| |

0x40000 | application |

| |

0x7FFFF | end |

It does not work and I do not know what is the issue?

I research the paper about "jump bootloader application" in nxp community and try to google all of the topic.

Re: MK64F bootloader jump into Application Issue

mjbcswitzerland — Wed, 06 May 2020 17:26:55 GMT

https://community.nxp.com/message/552186?commentID=552186#comment-552186

https://www.utasker.com/kinetis/FRDM-K64F.html

Regards

Mark
[uTasker project developer for Kinetis and i.MX RT]

Re: MK64F bootloader jump into Application Issue

nxf56274 — Thu, 07 May 2020 01:20:38 GMT

Hi,

You do not set the SCB->VTOR before you set the msp.

Have a great day,
TIC

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Re: MK64F bootloader jump into Application Issue

chhsu0229 — Thu, 07 May 2020 03:03:59 GMT

Hi Da Li,

I forget to list "SCB->VTOR = (uint32_t)addr;"

I also do that .

Re: MK64F bootloader jump into Application Issue

nxf56274 — Thu, 07 May 2020 03:12:13 GMT

Hi,

You can refer this link.FRDMK64F SD Bootloader

Have a great day,
TIC

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