/**
 * protected_io Source Code File
 * 
 * @file protected_io.S
 * 
 * @ingroup config_bitsdriver 
 * 
 * @brief This file contains the generated protected_io source code file for the CONFIGURATION BITS.
 *
 * @version Driver Version 1.0.0
*/
/*
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    software and any derivatives exclusively with Microchip products. 
    You are responsible for complying with 3rd party license terms  
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    NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS 
    SOFTWARE, INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT,  
    MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT 
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*/


#include "../utils/assembler.h"

/*
	 * GNU and IAR use different calling conventions. Since this is
	 * a very small and simple function to begin with, it's easier
	 * to implement it twice than to deal with the differences
	 * within a single implementation.
	 */

	PUBLIC_FUNCTION(protected_write_io)

#if defined(__GNUC__)
  
#ifdef RAMPZ
	out     _SFR_IO_ADDR(RAMPZ), r1         // Clear bits 23:16 of Z
#endif
	movw    r30, r24                // Load addr into Z
	out     CCP, r22                // Start CCP handshake
	st      Z, r20                  // Write value to I/O register
	ret                             // Return to caller

#elif defined(__IAR_SYSTEMS_ASM__)

# if !defined(CONFIG_MEMORY_MODEL_TINY) && !defined(CONFIG_MEMORY_MODEL_SMALL) \
                && !defined(CONFIG_MEMORY_MODEL_LARGE)
#  define CONFIG_MEMORY_MODEL_SMALL
# endif
# if defined(CONFIG_MEMORY_MODEL_LARGE)
	ldi     r20, 0
	out     RAMPZ, r20              // Reset bits 23:16 of Z
	movw    r30, r16                // Load addr into Z
# elif defined(CONFIG_MEMORY_MODEL_TINY)
	ldi     r31, 0                  // Reset bits 8:15 of Z
	mov     r30, r16                // Load addr into Z
# else
	movw    r30, r16                // Load addr into Z
# endif
# if defined(CONFIG_MEMORY_MODEL_TINY)
	out     CCP, r17                // Start CCP handshake
	st      Z, r18                  // Write value to I/O register
# elif defined(CONFIG_MEMORY_MODEL_SMALL)
	out     CCP, r18                // Start CCP handshake
	st      Z, r19                  // Write value to I/O register
# elif defined(CONFIG_MEMORY_MODEL_LARGE)
	out     CCP, r19                // Start CCP handshake
	st      Z, r20                  // Write value to I/O register
# else
#  error Unknown memory model in use, no idea how registers should be accessed
# endif
        ret
#else
# error Unknown assembler
#endif

	END_FUNC(protected_write_io)
	END_FILE()