Kinetis MicrocontrollersのトピックRe: NXP Kinetis bootloader not jumping to user application

NXP Kinetis bootloader not jumping to user application

arunkannan — Sat, 30 Mar 2024 08:02:45 GMT

I have flashed NXP Kinetis Bootloader v2.0.0 to MKL16Z128VFT4 and able to send commands and receive response.

Wrote a sample LED program and flashed using write-memory command at 0x9000 to test whether it jumps to user application and also set the same at bootloader_config.h

#define BL_APP_VECTOR_TABLE_ADDRESS 0x9000

But the bootloader is not jumping to application after reset.

Should I disconnect UART connection to host and try or is there anything else I need to set in code to jump to user application

Re: NXP Kinetis bootloader not jumping to user application

Alice_Yang — Tue, 02 Apr 2024 05:28:07 GMT

Hello @arunkannan

What about the start address of your user application image?

The bootloader for kL16, strongly recommend you:

https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-Bootloader-to-Update-Multiple-Devices-in-a-Network-for/ta-p/1113968

This is a simplified version.

Alice

Re: NXP Kinetis bootloader not jumping to user application

arunkannan — Tue, 02 Apr 2024 14:08:32 GMT

It is jumping to application in debug mode but in normal mode it is not jumping.

Help with below code.

if (timeoutTicks)
{
// Note that we assume that the tick counter won't overflow and wrap back to 0.
// The timeout value is only up to 65536 milliseconds, and the tick count starts
// at zero when when inited the microseconds driver just a few moments ago.
uint64_t elapsedTicks = microseconds_get_ticks() - lastTicks;

// Check if the elapsed time is longer than the timeout.
if (elapsedTicks >= timeoutTicks)
{
#if BL_FEATURE_POWERDOWN
if (shortTimeout)
{
#endif
// In the case of the typical peripheral timeout, jump to the user application.
jump_to_application(applicationAddress, stackPointer);

Re: NXP Kinetis bootloader not jumping to user application

arunkannan — Mon, 08 Apr 2024 06:34:07 GMT

@Alice_Yang
any update

Re: NXP Kinetis bootloader not jumping to user application

Alice_Yang — Tue, 09 Apr 2024 13:34:24 GMT

Hello @arunkannan

Sorry I'm not understand the " normal mode".

First you should confirm application works well. Then remap it to 0x9000, build to generate image. Program the image to 0x9000. Debug bootloader to check whether can jump to 0x9000.

Again, strongly recommend you:https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-Bootloader-to-Update-Multiple-Devices-in-a-Network-for/ta-p/1113968

Alice