Initial Commit

AVCLanDriver.h

@@ -0,0 +1,109 @@
+/*--------------------------------------------------------------------------------------------------
+
+  Name         :  AvcLanDriver.h
+
+  Description  :  AVC Lan driver for Toyota devices
+
+--------------------------------------------------------------------------------------------------*/
+#ifndef _AVCLANDRV_H_
+#define _AVCLANDRV_H_
+
+#include "GlobalDef.h"
+
+#define HU_ADDRESS                  0x190       // But possibly 0x160, known to be both
+
+#define MY_ADDRESS                  0x360       // CD Changer #1
+
+#define BROADCAST_ADDRESS           0x01FF      // All audio devices
+
+#define CONTROL_FLAGS               0xF
+
+/*--------------------------------------------------------------------------------------------------
+
+                       |<---- Bit '0' ---->|<---- Bit '1' ---->|
+     Physical '1'      ,---------------,   ,---------,         ,---------
+                       ^               |   ^         |         ^
+     Physical '0' -----'               '---'         '---------'--------- Idle low
+                       |---- 33 us ----| 7 |- 20 us -|- 20 us -|
+
+     A bit '0' is typically 33 us high followed by 7 us low.
+     A bit '1' is typically 20 us high followed by 20 us low.
+     A start bit is typically 165 us high followed by 30 us low.
+
+--------------------------------------------------------------------------------------------------*/
+
+// Following multipliers result of Timer 0 prescaler having 2 counts/us
+#define NORMAL_BIT_LENGTH           74 //37*2
+
+#define BIT_1_HOLD_ON_LENGTH        40 //20*2
+#define BIT_0_HOLD_ON_LENGTH        64 //33*2
+
+#define START_BIT_LENGTH            372 //186*2
+#define START_BIT_HOLD_ON_LENGTH    336 //168*2
+
+typedef enum
+{   // No this is not a mistake, broadcast = 0!
+    MSG_NORMAL      = 1,
+    MSG_BCAST       = 0
+
+} AvcTransmissionMode;
+
+typedef enum
+{
+    ACT_NONE,
+
+    ACT_AUX_IN_USE,
+    ACT_TUNER_IN_USE,
+    ACT_TAPE_IN_USE,
+    ACT_CD_IN_USE,
+
+    ACT_EJECT_CD,
+    ACT_NO_CD,
+    ACT_TUNER_INFO,
+    ACT_AUDIO_STATUS,
+//    ACT_CD_INFO,
+
+    ACT_STATUS,
+    ACT_REGISTER,
+    ACT_INIT,
+    ACT_CHECK
+
+} AvcActionID;
+
+typedef struct
+{
+    AvcActionID         ActionID;           // Action to perform after receiving this message.
+    byte                DataSize;           // Payload data size (bytes).
+    byte                Data[ 11 ];         // Payload data.
+    char                Description[ 17 ];  // ASCII description of the command for terminal dump.
+
+} AvcIncomingMessageStruct;
+
+typedef const AvcIncomingMessageStruct AvcInMessage;
+
+typedef struct
+{
+    AvcTransmissionMode Mode;               // Transmission mode: normal (1) or broadcast (0).
+    byte                DataSize;           // Payload data size (bytes).
+    byte                Data[ 11 ];         // Payload data.
+    char                Description[ 17 ];  // ASCII description of the command for terminal dump.
+
+} AvcOutgoingMessageStruct;
+
+typedef const AvcOutgoingMessageStruct AvcOutMessage;
+
+/*--------------------------------------------------------------------------------------------------
+                                         Prototypes
+--------------------------------------------------------------------------------------------------*/
+AvcActionID     AvcReadMessage ( void );
+
+bool            AvcProcessActionID ( AvcActionID actionID );
+void            AvcUpdateStatus ( void );
+
+void            DumpRawMessage ( bool incoming );
+
+#endif // _AVCLANDRV_H_
+
+/*--------------------------------------------------------------------------------------------------
+                                         End of file.
+--------------------------------------------------------------------------------------------------*/