Not sure how to reply to your questions on my USB interface other than this way or direct via my email inthetwilightzone at gmail dot com.
I'm using a silcon labs c8051F344 that has built in usb uart.
I know usb uses CRCs, I don't care or want to have to calculate CRC either for tx or rx (I'm getting limited on program memory on my end and it also sounds like more math work I don't want to do).
Is it possible to configure the USB UART in a pc to not require that I transmit them or just ignore what I send (I can put in dummy crc). I can certainly disregard them on my end so it won't matter if you send them.
I presume you'd have to write a driver for this USB, and could take care of it there, not sure.
Let me know on that subject and sounds like you can do this work if we can get around the CRC concern.
This project is for a device in which I want buyer's to have ability to upgrade software via usb should I incorporate future SW mods. I'll have a website where they can download a