Revision as of 03:39, 9 October 2015

Microphone service "mic:u"

Command Header	Description
0x00010042	MapSharedMem
0x00020000	UnmapSharedMem
0x00030140	StartSampling
0x00040040	AdjustSampling
0x00050000	StopSampling
0x00060000	IsSampling
0x00070000	GetEventHandle
0x00080040	SetGain
0x00090000	GetGain
0x000A0040	SetBias
0x000B0000	GetBias
0x000C0042	(size, <translate-header>, bufptr) This is a wrapper for CDCMIC command 0x00050042.
0x000D0040	SetClamp(u8 input) This writes the input value to a MIC-module state field.
0x000E0000	GetClamp. 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).

enum Encoding

enum SampleRate

@@ Line 25: / Line 25: @@
 |-
 | 0x00070000
-| GetEventHandle. This event is signaled by MIC-module when more audio-data is available in shared-mem.
+| [[MICU:GetEventHandle|GetEventHandle]]
 |-
 | 0x00080040
-| SetGain(u8 input). This is a wrapper for CDCMIC command 0x00010040.
+| [[MICU:SetGain|SetGain]]
 |-
 | 0x00090000
-| GetGain. This is a wrapper for CDCMIC command 0x00020000.
+| [[MICU:GetGain|GetGain]]
 |-
 | 0x000A0040
-| SetBias(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.
+| [[MICU:SetBias|SetBias]]
 |-
 | 0x000B0000
-| GetBias. This is a wrapper for CDCMIC command 0x00040000.
+| [[MICU:GetBias|GetBias]]
 |-
 | 0x000C0042