USB CDC ACM not working with FreeBSD

[robple11]

Hi,

This issue is probably more related to FreeBSD than to Nordic specific issues but I was hoping someone had a similar problem and found a solution.

I am using the nRF52840 Dongle connected to a pfsense 2.4 box (essentially FreeBSD distro) and having issues sending/receiving serial data. FreeBSD recognizes the USB dongle as a modem and creates 2 devices "/dev/cuaU0" and "/dev/ttyU0". Connecting to either device and sending/receiving serial data doesn't work.

In Ubuntu the kernel module cdc_acm.ko is used as the driver and the USB Dongle properly creates the "/dev/ttyACM0" device which works great.

If anyone has any ideas or has resolved a similar issue that would be great.

Thanks. 

[Jimmy@zone]

This might be long shot but, do you do this when you open the socket ? 

int bits;

bits = TIOCM_DTR;

 ioctl( _fd, TIOCMSET, &bits );

[robple11]

Thanks that did help. 

Using stty had issues, I had to write a quick little C++ program to send/receive data.

In the end the /dev/ttyU0 did not work but the /dev/cuaU0 worked but only for the latest pfsense 2.4.*, all other versions dont load the umodem/ucom modules.