How to switch to bootloader when OTA?

[Alice]

Hi,

I'm using nRF5_SDK_12.2.0_f012efa and s132_nrf52_3.0.0_softdevice. We want to do the OTA on it. However, I found that there is no DFU service in the HRS example.If I want to switch to the bootloader in the application like HRS example in nRF5_SDK_11, so that it can easily swith to bootloader using APP instead of using button. what example could I refer to? Could you give me some advice? Thanks.

Best regards, Alice

[Hung Bui]

Hi Alice, Please find the example in \examples\ble_peripheral\experimental_ble_app_buttonless_dfu\ instead.

Note that you would need to add the write properties as described here.

[Hung Bui]

Hi Alice,

It's a little bit strange because both nRFConnect and nRFToolbox uses the same DFU library. You may want to capture a sniffer trace when you test with nRFToolbox, it could tell what when wrong.

You can also add a break point in the application code where you write to GPREGRET before you jump to bootloader, to see if it reach there when the nRFToolbox try to do DFU.