on S3 Devices like e290 and Heltec V3.....usb serial is via CDC and not via own usb<->serial converter But communication has a very strong delay in the setup Check if that can be improoved
on S3 Devices like e290 and Heltec V3.....usb serial is via CDC and not via own usb<->serial converter
But communication has a very strong delay in the setup
Check if that can be improoved