Microphone service "mic:u"
| Command Header
|
Description
|
| 0x00010042
|
MapSharedMem
|
| 0x00020000
|
UnmapSharedMem
|
| 0x00030140
|
Initialize
|
| 0x00040040
|
(u8 input) ?
|
| 0x00050000
|
?
|
| 0x00060000
|
This writes an output u8 to cmdreply indexword[2]. val = *((u16*)0x1ec62000) >> 15.
|
| 0x00070000
|
GetEventHandle. This event is signaled by MIC-module when more audio-data is available in shared-mem.
|
| 0x00080040
|
SetControl(u8 input). This is a wrapper for CDCMIC command 0x00010040.
|
| 0x00090000
|
GetControl. This is a wrapper for CDCMIC command 0x00020000.
|
| 0x000A0040
|
SetRecording(u8 input). This is a wrapper for CDCMIC command 0x00030040. 0 = disable recording, 1 = enable recording. When recording is disabled with this, MIC-module writes value 0xFFFF to the output audio sample data in shared-mem, since that's what the MIC hardware returns here.
|
| 0x000B0000
|
IsRecording. This is a wrapper for CDCMIC command 0x00040000.
|
| 0x000C0042
|
(size, <translate-header>, bufptr) This is a wrapper for CDCMIC command 0x00050042.
|
| 0x000D0040
|
(u8 input) This writes the input value to a MIC-module state field.
|
| 0x000E0000
|
This writes the u8 value of the MIC-module field also used by command 0x000D0040, to cmdreply indexword[2].
|
| 0x000F0040
|
(u8 input) This writes the input u8 value to a MIC-module state field.
|
| 0x00100040
|
When the input value is 0, value 1 is written to an u8 MIC module state field. Otherwise, value 0 is written there. Normally the input value is non-zero.
|
This is an interface for using the MIC hardware via the "cdc:MIC" service and the MIC IO registers.
Only one session can be open for this service total(that is, only one process can use this service at a time).
Control value
| Bit
|
Description
|
| 6-0
|
Amplification, 0=none.
|
| 7
|
Doesn't affect output audio data in shared-mem?
|
See Also
MIC Shared Memory