simtrace2 - SIMtrace2 based on AT91SAM3, including card emulation

Age	Commit message (Collapse)	Author	Files	Lines
2020-05-25	Introduce support for asynchronous USB transmission	Harald Welte	1	-0/+10
	libosmo-simtrace2 traditionally had only supported blocking, synchronous I/O, while other osmocom programs such as remsim-client used asynchronous USB I/O. Using async USB I/O for IRQ + IN transfers while using blocking I/O for OUT transfers doesn't seem to work reliably, so we have to offer a way to perform the OUT transfers generated within libosmo-simtrace2 in async mode. Change-Id: Ib8939bdb7f533cd20a34a30a97f12b782b9816c2