RE: Can't write to Buttonless DFU service

genis — Tue, 07 Mar 2017 15:27:46 GMT

I also was having the problem with application and bootloader overlapping because of them both allocating the m_mbr_params_page in nrf_dfu_settings.c. The link you referred explains how to fix that. Thanks a lot.

RE: Can't write to Buttonless DFU service

genis — Tue, 07 Mar 2017 14:08:59 GMT

Thank you, I hadn't seen those posts. That made it work.

RE: Can't write to Buttonless DFU service

Vidar Berg — Tue, 07 Mar 2017 12:59:37 GMT

The example didn't include the required write property for the control point, and would only work for peer devices that ignored it.

This is listed under known issues in the SDK release notes:

Buttonless DFU Template Application (experimental):
- The project setup of the example is wrong and does not fit into the available space below the DFU bootloader. To fix this problem, change the IROM1 size from 0x61000 to 0x59000. In addition, comment out the code section that reserves a codepage at 0x7E000 for MBR parameters. For details, see
  devzone.nordicsemi.com/.../
- To switch to DFU mode, you must write to the DFU control point. However, this characteristic is set as read only. Add the following code line to enable the write property: char_md.char_props.write = 1; For details, see devzone.nordicsemi.com/.../