DFU problem (nRF5 SDK v14.2.0)

[Ludwig POILVE]

Hello I'm a beginner and I try to use the DFU. I use the  documentation and I can send my init packet without any problem. But when I try to send my Firmware I have 2 problems. First one is I can't create an object with a size sup as 256. And the second is my command execute send me the 05 error. Can you help me to learn how to fix that please ?

[Sigurd]

Hi,

Ludwig POILVE said:

First one is I can't create an object with a size sup as 256

Do you get any error messages? What object are you trying to create? Could you explain some more about what you are trying to do?

Ludwig POILVE said:

And the second is my command execute send me the 05 error

What command do you use? Please provide some more information.

[Ludwig POILVE]

My problem is solve, I was just writing to 01 instead of 02 when I was trying to send the FW. Now I have a problem with the CRC-32 : How the device calculate it ?

[Sigurd]

Ludwig POILVE said:

How the device calculate it ?

The bootloader uses the function crc32_compute() to calculate the CRC-32.

Ludwig POILVE said:

Now I have a problem with the CRC-32

Please explain what problems you have with the CRC-32. Wild guess, but maybe you are running into the same problem as seen in this post?