How to compile 'connectivity firmware' from SDK example ?

[Dabinn]

Hi,

I  tried to use BLE DFU with nrfutil on my nrf52832 custom boards, but always get the result of 'Failed to open. Error code: 13', so I am trying to build the connectivity firmware from SDK ble_connectivity example for better debugging.
Things I have tried:
- nrfutil is able to perform serial DFU with both my 2 boards. (one board need to change UART pin setting, and another need to disable HWFC)

- Both 2 boards are not able to do BLE DFU with default connectivity firmware (I have erased the chip then used nrfutil with '-f' argument to flash the fw, and confirm the fw is written)

- Patch the SDK and build the ble_connectivity example, enable RTT log out, check the UART response. The board is able to received data, but seems they are always repeat the first negotiation.
 

I am not sure if I was doing right with the SDK build, these are my procedures:
1. Download nRF5_SDK_15.2.0_9412b96
2. Clone pc-ble-driver from github, and switch to the branch 'v4.0.0'
3. Patch the sdk with the following command 'git apply --ignore-whitespace ../pc-ble-driver/hex/nRF5_SDK_15.2.0_connectivity.patch', and confirm there are no errors and make sure the SDK files are patched.
4. Open ble_connectivity example projects with SES, use my custom board settings and build. I have tried 'examples\connectivity\ble_connectivity\pca10040\ser_s132_hci' , 'ser_s132v3_hci' and 'ser_s132v5_hci'

Questions:
1. Is the above procedures correct?
2. Why there is no 'ser_s132v6_hci' project? But there are compiled hex files under '\hex\sd_api_v6\' of the pc-ble-driver v4.0.0 branch.
3. What SDK project/board type will be built if I used the CMAKE method mentioned in the README.md of the 'pc-ble-driver'? (At the 'Compiling-connectivity-HEX-files' section)
https://github.com/NordicSemiconductor/pc-ble-driver#Compiling-connectivity-HEX-files
4. Which version of the nrfutil is suggested? I have tried the python pip installed one, and another exe file downloaded from the v5.0.0 release.
https://github.com/NordicSemiconductor/pc-nrfutil/releases
5. And which version of the 'ser_s132vxx_hci'  project is corresponded to the suggested version of the nrfutil?

Thanks,
Dabinn

[Jared]

Hi,

• Are you running on Ubuntu/linux distro? If so are you running nrfutil as sudo?

• Is one of the boards connected to your computer and flashed with the connectivity FW and the second flashed with the BLE bootlader and SD?

  If SDK v15.2.0 is used, then nrfutil v4.0.0 or newer should be used.

Best regards

Jared 

[Dabinn]

Hi,

• I am running on Windows 10, does it needs to run as administrator?
• Yes, one flashed connectivity FW, and the second flashed working bootloader and is availible in DFU mode ('DfuTarg' can be seen via mobile app)
• Thank you, now I am testing with 2 SD versions, 3.1.0 and 6.1.0 , which would be suggested? Or they both work fine with nrfutil?
  And I used '4.0.0' for cmake connectivity_version parameter, is that correct? 
  cmake -G "Visual Studio 15" -DCMAKE_TOOLCHAIN_FILE=%VCPKG_ROOT%\scripts\buildsystems\vcpkg.cmake -DCOMPILE_CONNECTIVITY=1 -DCONNECTIVITY_VERSION=4.0.0 ..