ustir
—
SigmaTel STIr4200-based USB-IrDA bridge support
ustir* at uhub?
irframe* at ustir?
The ustir
driver provides support for USB-IrDA bridges
based on the SigmaTel STIr4200. The driver is known to work with the following
adapters:
- Mars II 740 USB IrDA Adapter
Access to the IrDA device is through the
irframe(4) driver.
The ustir
driver appeared in NetBSD
1.6.
The STIr4200 cannot notify the driver when it has received data, instead it has
to be continuously polled. This driver polls (when idle) at a fairly low rate
of 10 times per second, which means that system performance is not overly
affected by rapid polling, but latency is fairly high.