DeviceFS_ReceivedCharacter (changes)
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DeviceFS
» SWI Calls
» DeviceFS_ReceivedCharacter
DeviceFS_ReceivedCharacter
(SWI &42746)
| Entry | |
|---|---|
| R0 | Byte received |
| R1 | DeviceFS stream handle |
| Exit | |
|---|---|
| - | C set => byte not transferred |
| C clear => byte transferred |
Use
The purpose of this call is to inform DeviceFS that a device driver has received a character.
Notes
DeviceFS will then process the character (buffer it, or unblock a waiting stream).
For speed DeviceFS_ReceivedCharacter and DeviceFS_TransmitCharacter do not validate the external handle passed – strange things will happen if bad handles are passed.
See also
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