September 2011
Intermediate to advanced
744 pages
19h 4m
English
Content preview from Professional Windows® Embedded Compact 7Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
STREAM DRIVER CONFIGURATION
A Stream Driver is configured in terms of its registry entries and BIB file entry. The registry entry can include, amongst other things, a specification of the name to use for the driver in terms of its prefix.
Driver Naming Conventions
Stream Drivers are typically named by their legacy name, which is the prefix with the instance name post-pended:
XXXN: where XXX is the driver prefix as in its registry key and N is the device instance index. Note the colon on the end.
For example, serial ports would be named COM1:, COM2: and so on. The instance index can range from 0 to 9 with Compact 7, which limits the number of instances of a driver to 10. When a driver is opened by an application it calls CreateFile with this name as a parameter. For example CreateFile(_T("COM1:", ...).
Alternatively, because Stream Drivers are loaded by the Device Manager, they can be referenced with respect to \$device. The format follows:
\$device\XXXN where XXX is the prefix and N is the index.
N can be greater than 9. For example CreateFile(_T("\$device\COM11...) would open COM11. There is no colon in this syntax.
Remember that in C/C++ code, which is what is used for device driver code, the backslashes are implemented as the escape sequence \.
Stream Drivers loaded on a bus have the following format for their names on the system:
\$bus\BUSNAME_BN_DN_FN where:
- BUSNAME is the name of the bus, e.g., PCI.
- BN is the bus number in the bus channel, typically 0 or 1.
- DN is the device ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.