Firmware update (DFU) on NRF52

[Felipe Ribas]

Hi,

just a simple question: I need to create an update over the air system with my nrf52 and I was wondering if transferring the new image to the chip requires especial UART communication or something like this? The reason of my question is because I will have 2 separate BLE chips but one is going to have the radio off and the only connection between them is an one wire bus system (LIN bus). Can I use this to transfer the new image and then trigger the update all over this bus system? Note that between the LIN bus and the BLE there is a LIN<->UART chip.

[Felipe Ribas]

Sorry, I didn't specify properly. I'm using a pair of nRF52832 talking to each other via LIN bus. As the nRF doesn't support LIN natively there is also a UART-LIN between the nRFs. One of them has the radio off and it's only receiving infos from the other one. Will I be able to implement some OTA update via this serial connection? The softdevice I'm using is the s132