There is a way to program k22 via uart2?

[mangramarco]

Hi,

i've a board with k22 mcu. This communicate with other mcu by means of uart2 and there is not any other external communication implemented. I want to update the firmware of k22 passing through other mcu. Is it possible?

Thank you

Marco

[ErichStyger]

Hi @mangramarco ,

yes, you can use the KBOOT for this (see https://mcuoneclipse.com/2018/03/03/flash-resident-usb-hid-bootloader-with-the-nxp-kinetis-k22-micro... where I used it with USB CDC). That bootloader from NXP supports different loading interfaces like USB, SPI, I2C and as well UART.

I hope this helps,

Erich