NRF52 FOTA MBED Hardware

[jd457]

Hello Nordic Community,,

Do I need the typical MBED hardware setup (Interface chip connected to 'target' (the nrf52)) in order to program the nrf52 with FOTA using an MBED generated .hex file? Or is the interface chip not used during FOTA with MBED hex files?

I have one prototype that works well with MBED over the usual programming method (USB drag and drop), but I need an interface chip connected to a USB port (obviously) to accomplish this. I'm wondering if any of this specific hardware is needed for FOTA with MBED files.

Thanks very much!

Matt

[Michael Dietz]

When updating firmware over the air the interface MCU will not be used. However the nRF52 on your board will have to be pre programmed with a softdevice and bootloader application. Once there is a valid softdevice and bootloader application you shouldn't need an interface MCU. And I'm not sure about mbed's OTA capabilites but you may be only able to update the application or you may be able to update the bootloader, softdevice and appliation over the air.