NRF52840 USB Name

[Andrew]

How do I change the name of the USB device?  I am starting with the USB Audio Demo and, logically, it shows up in Windows as "nRF52 USB Audio Demo" but I cannot find that text anywhere in the project or the SDK.  It must not be related to the vendor ID because I can change the ID and the name still shows.

[Håkon Alseth]

Hi,

 

It's set in the file app_usbd_string_config.h, in this path:

$SDK/examples/peripheral/usbd_audio/config

 

Cheers,

Håkon

[Andrew]

Is there a way to set these without editing the SDK files?  There doesn't seem to be a macro settings that is set up to prevent redefinition if I try to to define them on my own.

[Håkon Alseth]

Hi,

 

Unfortunately, there isn't an option to do so. You'll have to edit the _config.h file. You could wrap it around a #ifndef APP_USBD_STRINGS_MANUFACTURER \ #define .... \ #endif.

 

Best regards,

Håkon

[Andrew]

Even for the serial number?

Side question, is the serial number field meant for identifying individual devices or for identifying a product?

[Turbo J]

Individual devices are identified by serial number. You want that feature as soon as you connect more than one to the same computer.

[Andrew]

Right, which is why it is strange that the serial number is defined in an SDK config file.

[Håkon Alseth]

Agree with you, especially on the serial number. This should be random generated, for instance derived from NRF_FICR->DEVICEADDR or any other unique register to avoid any issues by connecting two "equal" devices to the same system. I'll create a bug for this.

 

*edit*: There is a function for randomizing the serial number present in app_usbd_serial_num.c, which is used if you set your app_usbd_string_config.h::APP_USBD_STRING_SERIAL_EXTERN 1 and "APP_USBD_STRING_SERIAL g_extern_serial_number"

 

Cheers,

Håkon