usb driver of nrf52840 for mac os

[haha_pipixia]

hi.,

we develop a product that use nrf52840,and it need to suport usb dfu in windowns and mac.and also need achieve cdc communication .this funcation is ok in windows,and in the mac ,there is some suspicious。

1.where is the file of .pkg that usb cdc driver of mac os？

2. how to use the urfutil.exe to dfu in the mac os? 

[Einar Thorsrud]

Hi,

1.where is the file of .pkg that usb cdc driver of mac os？

We do not supply a CDC driver for macOS. It is not needed as this is supported out of the box in macOS (as most other modern operating systems).

2. how to use the urfutil.exe to dfu in the mac os? 

You do it as you would any other operating system, but specify the correct path to the CDC device. I tested now in Big Sur, and then my nRF52840 device with USB CDC appears as /dev/tty.usbmodem146301. You can use ls -l /dev/tty.usbmodem* to see what it is in your case.

You can see all relevant options for nrfutil in this case by typing nrfutil dfu usb-serial --help

So you should use something like:

nrfutil dfu usb-serial -pkg app_dfu_package.zip -p /dev/tty.usbmodem146301 -b 115200

[pipixia_8_8]

Hi,if there is any doc for the way use the nrfutil in the mac os,i know in the windows we can call the api of nrfutil.exe by bat file after download  nrfutil.exe and  set windows path .but in the mac os ,in the mac os if i need download the nrfutil.app,and then input the command of nrfutil in the t erminal?

[Einar Thorsrud]

Hi,

The normal way to install nrfutil on any OS, including macOS, is to use PIP by typing "pip install nrfutil" in the terminal.

Unfortunately though, Python on macOS is a bit tricky, so how to do things in detail varies a bit on your macOS version and Python installation.

[pipixia_8_8]

i download the nrfutil-mac of executable file in

https://github.com/NordicSemiconductor/pc-nrfutil/releases 

to my  mac,and in the terminal of  mac, i open the path of nrfutil-mac,input the command of nrfutl like in

https://github.com/mezaoner/pc-nrfutil

but the display of terminal like this:

 

so i want to know how to use nrfuril-mac file in mac os？

[Einar Thorsrud]

Hi,

I do not recommend using the executable you can download from GitHub directly. First of all you would need to make it executable (chmod +x), then you would have to make an exception to allow running apps form an unidentified developer, and then you may get some other incompatibilities.

The best way to install nrfutil (as most other python tools) is to use pip. So first ensure you have pip if not allready, and then run "pip install nrfutil" from your terminal.