9 years, 4 months ago.

Why entering into bootloader mode always?

What could be the problem FRDM-K22 board always going in to bootloader mode even not pressing RESET while power on?

Thanks.

Question relating to:

The FRDM-K22F is an ultra-low-cost development platform for Kinetis K Series K2x (K22F) MCUs built on ARM® Cortex™-M4 processor. Features include easy access to MCU I/O, battery-ready, low-power operation, a …

Sounds like the interface application isn't present. Give this a try. http://developer.mbed.org/handbook/Firmware-FRDM-K22F

posted by Sam Grove 15 Dec 2014

Sam Grove,

My problem is still open. By mistake I assigned this question to my self.. I don;t to know how to to revert back to unassign

Thanks

posted by Vasavya Yagati 15 Dec 2014

Connect scope and find out if reset line goes down, for how long and when.. I have seen it once , so there was added a delay (to wait until circuit stablizes)

posted by Martin Kojtal 16 Dec 2014

1 Answer

9 years, 4 months ago.


Assigned to Vasavya Yagati 9 years, 4 months ago.

This means that the question has been accepted and is being worked on.