/*******************************************************************************
FileName:       I2CReceivedByteIsAnAddress.c
Processor:      PIC32MX
Compiler:       Microchip MPLAB XC32 v1.00 or higher

Copyright © 2008-2009 released Microchip Technology Inc.  All rights
reserved.

Microchip licenses to you the right to use, modify, copy and distribute
Software only when embedded on a Microchip microcontroller or digital signal
controller that is integrated into your product or third party product
(pursuant to the sublicense terms in the accompanying license agreement).

You should refer to the license agreement accompanying this Software for
additional information regarding your rights and obligations.

SOFTWARE AND DOCUMENTATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
MERCHANTABILITY, TITLE, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL MICROCHIP OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER
CONTRACT, NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR
OTHER LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE OR
CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT OF
SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
*******************************************************************************/

#include <peripheral/i2c.h>
#include "I2CPrivate.h"

/*******************************************************************************
  Function:
    BOOL I2CReceivedByteIsAnAddress ( I2C_MODULE id )

  Summary:
    Routine to detect if the most recent byte received is data or an address

  Description:
    This routine identifies if the most recent byte received was an address
    byte or a data byte.

  Precondition:
    The module must have been configured appropriately and enabled, a transfer
    must have been previously started.

  Parameters:
    id      - Identifies the desired I2C module

  Returns:
    Boolean identifying if the byte received is data or an address byte
    * TRUE    - If the byte received is an address byte
    * FALSE   - If the byte received is a data byte
        
  Example:
    <code>
    if (I2CReceivedDataIsAvailable(I2C1))
    {
        data = I2CGetByte(I2C1);
        if (I2CReceivedByteIsAnAddress(I2C1))
        {
            // Handle address byte
        }
        else
        {
            // Copy the byte to the slave buffer
        }
    }
    </code>

  Remarks:
    This routine should only be used by slave receivers.
  *****************************************************************************/

BOOL I2CReceivedByteIsAnAddress ( I2C_MODULE id )
{
	I2C_REGISTERS * const i2cRegisters = i2cBase[id];

	return(!i2cRegisters->I2CxSTATbits.D_A);
}