/*
 * locks for newlib
 *
 * Samuel Thibault <Samuel.Thibault@eu.citrix.n
/*
             LUFA Library
     Copyright (C) Dean Camera, 2013.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2013  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  Target-related functions for the TINY target's NVM module.
 */

#define  INCLUDE_FROM_TINYNVM_C
#include "TINYNVM.h"

#if defined(ENABLE_XPROG_PROTOCOL) || defined(__DOXYGEN__)

/** Sends the given pointer address to the target's TPI pointer register */
static void TINYNVM_SendPointerAddress(const uint16_t AbsoluteAddress)
{
	/* Send the given 16-bit address to the target, LSB first */
	XPROGTarget_SendByte(TPI_CMD_SSTPR | 0);
	XPROGTarget_SendByte(AbsoluteAddress & 0xFF);
	XPROGTarget_SendByte(TPI_CMD_SSTPR | 1);
	XPROGTarget_SendByte(AbsoluteAddress >> 8);
}

/** Sends a SIN command to the target with the specified I/O address, ready for the data byte to be written.
 *
 *  \param[in] Address  6-bit I/O address to write to in the target's I/O memory space
 */
static void TINYNVM_SendReadNVMRegister(const uint8_t Address)
{
	/* The TPI command for reading from the I/O space uses strange addressing, where the I/O address's upper
	 * two bits of the 6-bit address are shifted left once */
	XPROGTarget_SendByte(TPI_CMD_SIN | ((Address & 0x30) << 1) | (Address & 0x0F));
}

/** Sends a SOUT command to the target with the specified I/O address, ready for the data byte to be read.
 *
 *  \param[in] Address  6-bit I/O address to read from in the target's I/O memory space
 */
static void TINYNVM_SendWriteNVMRegister(const uint8_t Address)
{
	/* The TPI command for reading from the I/O space uses strange addressing, where the I/O address's upper
	 * two bits of the 6-bit address are shifted left once */
	XPROGTarget_SendByte(TPI_CMD_SOUT | ((Address & 0x30) << 1) | (Address & 0x0F