DFU Init packet invalid CRC

RE: DFU Init packet invalid CRC

jbmillard — Wed, 09 Aug 2023 15:37:36 GMT

I found the the problem. I was writing both the data/packet and control characteristics CBCharacteristicWriteType of .withResponse. For the data characteristic, it needed to be .withoutResponse.

RE: DFU Init packet invalid CRC

jbmillard — Wed, 09 Aug 2023 14:43:26 GMT

Yes, it is from my app.

Line 58 comes from the line before - see line 56 and 57. That is data received from the radio bootloader in response to the get CRC command (0x03)

I am not using the library.

RE: DFU Init packet invalid CRC

Edvin — Wed, 09 Aug 2023 13:41:56 GMT

Hello,

Is this log from your custom mobile application, or from the nRF? Since it says "DFUController", I assume it is the mobile app.

Where do you get the offset and crc values from on line 58? I am not familiar with the mobile app libraries that we provide, but are you able to debug to see whether these are fetched correctly?

Are you using our library at all, by the way? If so, you can compare the implementation with the nRF Toolbox source code, and compare it with your implementation.

Best regards,

Edvin