/**************************************************************************************************
  Filename:       mac_tx.h
  Revised:        $Date: 2007-09-11 10:58:41 -0700 (Tue, 11 Sep 2007) $
  Revision:       $Revision: 15371 $

  Description:    Describe the purpose and contents of the file.


  Copyright 2006-2009 Texas Instruments Incorporated. All rights reserved.

  IMPORTANT: Your use of this Software is limited to those specific rights
  granted under the terms of a software license agreement between the user
  who downloaded the software, his/her employer (which must be your employer)
  and Texas Instruments Incorporated (the "License").  You may not use this
  Software unless you agree to abide by the terms of the License. The License
  limits your use, and you acknowledge, that the Software may not be modified,
  copied or distributed unless embedded on a Texas Instruments microcontroller
  or used solely and exclusively in conjunction with a Texas Instruments radio
  frequency transceiver, which is integrated into your product.  Other than for
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  YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
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  INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE, 
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  NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
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**************************************************************************************************/

#ifndef MAC_TX_H
#define MAC_TX_H

/* ------------------------------------------------------------------------------------------------
 *                                         Includes
 * ------------------------------------------------------------------------------------------------
 */
#include "hal_types.h"
#include "mac_high_level.h"


/* ------------------------------------------------------------------------------------------------
 *                                          Define
 * ------------------------------------------------------------------------------------------------
 */
/* bit value used to form values of macTxActive */
#define MAC_TX_ACTIVE_PHYSICALLY_BV      0x80

/* state values for macTxActive; note zero is reserved for inactive state */
#define MAC_TX_ACTIVE_NO_ACTIVITY           0x00 /* zero reserved for boolean use, e.g. !macTxActive */
#define MAC_TX_ACTIVE_INITIALIZE            0x01
#define MAC_TX_ACTIVE_QUEUED                0x02
#define MAC_TX_ACTIVE_GO                   (0x03 | MAC_TX_ACTIVE_PHYSICALLY_BV)
#define MAC_TX_ACTIVE_CHANNEL_BUSY          0x04
#define MAC_TX_ACTIVE_DONE                 (0x05 | MAC_TX_ACTIVE_PHYSICALLY_BV)
#define MAC_TX_ACTIVE_LISTEN_FOR_ACK       (0x06 | MAC_TX_ACTIVE_PHYSICALLY_BV)
#define MAC_TX_ACTIVE_POST_ACK             (0x07 | MAC_TX_ACTIVE_PHYSICALLY_BV)


/* ------------------------------------------------------------------------------------------------
 *                                          Define
 * ------------------------------------------------------------------------------------------------
 */
#define MAC_TX_IS_PHYSICALLY_ACTIVE()       (macTxActive & MAC_TX_ACTIVE_PHYSICALLY_BV)


/* ------------------------------------------------------------------------------------------------
 *                                   Global Variable Externs
 * ------------------------------------------------------------------------------------------------
 */
extern uint8 macTxActive;
extern uint8 macTxBe;
extern uint8 macTxType;
extern uint8 macTxCsmaBackoffDelay;


/* ------------------------------------------------------------------------------------------------
 *                                       Prototypes
 * ------------------------------------------------------------------------------------------------
 */
MAC_INTERNAL_API void macTxInit(void);
MAC_INTERNAL_API void macTxHaltCleanup(void);
MAC_INTERNAL_API void macTxStartQueuedFrame(void);
MAC_INTERNAL_API void macTxChannelBusyCallback(void);
MAC_INTERNAL_API void macTxDoneCallback(void);
MAC_INTERNAL_API void macTxAckReceivedCallback(uint8 seqn, uint8 pendingFlag);
MAC_INTERNAL_API void macTxAckNotReceivedCallback(void);
MAC_INTERNAL_API void macTxTimestampCallback(void);
MAC_INTERNAL_API void macTxCollisionWithRxCallback(void);


/**************************************************************************************************
 */
#endif
