RE: Buttonless DFU

Einar Thorsrud — Tue, 29 May 2018 14:07:17 GMT

Hi,

First of all, as you write that you are a beginner with Nordic products, i wander why you are using a SDK 11 bootloader with a SDK 12.3 application? It could make sense if you have devices in the field that were based on SDK 11, but if not, then I suggest using everything from the same SDK version. Also, which chip are you using?

For the question, the bootloaders in SDK 11 (legacy) and SDN 12.3 (secure) are very different, so you will need to make some adaptations in the application. Can you provide a bit more context to how you use "NRF_POWER->GPREGRET = BOOTLOADER_DFU_START" and "sd_power_gpregret_set(BOOTLOADER_DFU_START)". Particularily, how does it fail? What do you mean by "hang up" and "seems not to worked". What is the state of the application seen from a debugger? Any relevant logs? Error code returned from sd_power_gpregret_set()?

RE: Buttonless DFU

gnrboy — Tue, 29 May 2018 06:31:07 GMT

if you use nrf52832 you have already all to perform buttonless OTA ( softdevice 5.0. , generate key and compile bootloader s132 and you have buttonless dfu app)