A fast and easily customised operating system
for ARM devices
KeyV 2
Programmer's Reference Manuals
» Part 1 - Introduction
» Vectors
» Software Vector Numbers
» KeyV
» KeyV 2
Key pressed
| Entry | |
|---|---|
| R0 | 2 (reason code) |
| R1 | Low-level internal key number |
Use
A device driver must inform the kernel of keys being released or pressed by using these reason codes.
Notes
The kernel must enable the device driver first (see KeyV 4).