Hi,
I'm developing a GUI on Qt creator to communicate by USB (send and receive data) with a nRF52840 DK. For that, I want to use the USB CDC ACM module (instead of UART or UARTE). I took the usbd_cdc_acm and the usbd_ble_uart examples to do some tests. However, I'm unable to open the COM port where the nRF USB is plugged using my Qt application. The only way to open it is using PuTTY, even if I try to use another terminal as Termite, it doesn't work. What is more strange is that once I use PuTTY and then close it, I'm able to connect to the device using my Qt application...Is there a reason the nRF USB port can only be open by using PuTTy?
I'm using SDK 17.0.2 and Qt 5.15.2 (MSVC 2019, 64 bit). Any help would be appreciated.
