I'm using Xmega128A4U, with ASF 3.5.1
I use the USB Device driver for cdc_stdio.
It all worked fine, but my transfer speed was about 22KBytes/sec.
So I commented out the line
in the conf_usb.h file, and hoped to go at a faster rate (full speed 12 Mb/s) - but it was just the same speed as above. I use
to transfer data into the USB stack - I'm a bit concerned it may send a byte at a time - but i can't find where putchar() is implemented - its just defined as an extern.
1) Anyone know how configure the USB stack to run at full speed and get a higher transfer rate?
2) how can i find out where my putchar() implementation is so i can have a look at what's happening?
3) can i use a more block oriented write instead of putchar()
Many Thanks in advance!