--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cs/services/tty/tty_i.h	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,89 @@
+/**
+ * @file	tty_i.h
+ *
+ * Internal definitions for TTY.
+ *
+ * @author	Frederic Turgis (f-turgis@ti.com) & Gerard Cauvy (g-cauvy@ti.com)
+ * @version 0.1
+ */
+
+/*
+ * History:
+ *
+ * 	Date       	Modification
+ *  ------------------------------------
+ *  01/27/2003	Create
+ *
+ * (C) Copyright 2003 by Texas Instruments Incorporated, All Rights Reserved
+ */
+
+#ifndef __TTY_I_H_
+#define __TTY_I_H_
+
+
+#include "rv/rv_general.h"
+#include "rvm/rvm_gen.h"
+#include "rvf/rvf_api.h"
+#include "rvm/rvm_use_id_list.h"
+
+/* TTY entity (Background Task) is HIGHLY linked to the Audio entity. */
+#include "audio/audio_api.h"
+
+/* Macro definition for sending trace */
+#define TTY_SEND_TRACE(text,level) rvf_send_trace(text, sizeof(text)-1, NULL_PARAM, level, TTY_USE_ID )
+
+/* Events Masks for TTY SWE. */
+#define TTY_DATA_EVENT_MASK (EVENT_MASK(RVF_APPL_EVT_0))
+#define TTY_INIT_EVENT_MASK (EVENT_MASK(RVF_APPL_EVT_1))
+#define TTY_EXIT_EVENT_MASK (EVENT_MASK(RVF_APPL_EVT_2))
+
+/* TTY Control Block. */
+typedef struct
+{
+	/**
+	 * Return path of the input result (should be the return path to access 
+	 * to the SWE we are communicating with).
+	 */
+	T_RV_RETURN_PATH return_path;
+
+	/** Pointer to the error function */
+	T_RVM_RETURN (*error_ft)(T_RVM_NAME swe_name,	
+							 T_RVM_RETURN error_cause,
+							 T_RVM_ERROR_TYPE error_type,
+							 T_RVM_STRING error_msg);
+
+	/** Mem bank id. */
+	T_RVF_MB_ID prim_mb_id;
+
+	/** Address ID of TTY SWE */
+	T_RVF_G_ADDR_ID addr_id;
+
+	UINT8 state;
+
+} T_TTY_ENV_CTRL_BLK;
+
+/* Internal messages definition */
+#define TTY_START_REQ (0x00F0 | AUDIO_EVENT_INTERN | AUDIO_EVENTS_MASK)
+
+typedef struct
+{
+  T_RV_HDR    os_hdr;
+  T_RV_RETURN return_path;
+} T_TTY_START;
+
+#define TTY_STOP_REQ (0x00F1 | AUDIO_EVENT_INTERN | AUDIO_EVENTS_MASK)
+
+typedef struct
+{
+  T_RV_HDR    os_hdr;
+  T_RV_RETURN return_path;
+} T_TTY_STOP;
+
+/* Define all the state of the TTY State Machine */
+#define TTY_IDLE                   (1)
+#define TTY_WAIT_START_CON         (2)
+#define TTY_WAIT_STOP_COMMAND      (3)
+#define TTY_WAIT_START_CON_TO_STOP (4)
+#define TTY_WAIT_STOP_CON          (5)
+
+#endif /* __TTY_I_H_ */