/* ---------------------------------------------------------------------------- */
/*                  Atmel Microcontroller Software Support                      */
/*                       SAM Software Package License                           */
/* ---------------------------------------------------------------------------- */
/* Copyright (c) 2014, Atmel Corporation                                        */
/*                                                                              */
/* All rights reserved.                                                         */
/*                                                                              */
/* Redistribution and use in source and binary forms, with or without           */
/* modification, are permitted provided that the following condition is met:    */
/*                                                                              */
/* - Redistributions of source code must retain the above copyright notice,     */
/* this list of conditions and the disclaimer below.                            */
/*                                                                              */
/* Atmel's name may not be used to endorse or promote products derived from     */
/* this software without specific prior written permission.                     */
/*                                                                              */
/* DISCLAIMER:  THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR   */
/* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE   */
/* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,      */
/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,  */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF    */
/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING         */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                           */
/* ---------------------------------------------------------------------------- */

#ifndef _SAM_TWI_COMPONENT_
#define _SAM_TWI_COMPONENT_

/* ============================================================================= */
/**  SOFTWARE API DEFINITION FOR Two-wire Interface */
/* ============================================================================= */
/** \addtogroup SAM_TWI Two-wire Interface */
/*@{*/

#if !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__))
/** \brief Twi hardware registers */
typedef struct {
  __O  uint32_t TWI_CR;        /**< \brief (Twi Offset: 0x00) Control Register */
  __IO uint32_t TWI_MMR;       /**< \brief (Twi Offset: 0x04) Master Mode Register */
  __IO uint32_t TWI_SMR;       /**< \brief (Twi Offset: 0x08) Slave Mode Register */
  __IO uint32_t TWI_IADR;      /**< \brief (Twi Offset: 0x0C) Internal Address Register */
  __IO uint32_t TWI_CWGR;      /**< \brief (Twi Offset: 0x10) Clock Waveform Generator Register */
  __I  uint32_t Reserved1[3];
  __I  uint32_t TWI_SR;        /**< \brief (Twi Offset: 0x20) Status Register */
  __O  uint32_t TWI_IER;       /**< \brief (Twi Offset: 0x24) Interrupt Enable Register */
  __O  uint32_t TWI_IDR;       /**< \brief (Twi Offset: 0x28) Interrupt Disable Register */
  __I  uint32_t TWI_IMR;       /**< \brief (Twi Offset: 0x2C) Interrupt Mask Register */
  __I  uint32_t TWI_RHR;       /**< \brief (Twi Offset: 0x30) Receive Holding Register */
  __O  uint32_t TWI_THR;       /**< \brief (Twi Offset: 0x34) Transmit Holding Register */
  __I  uint32_t Reserved2[43];
  __IO uint32_t TWI_WPMR;      /**< \brief (Twi Offset: 0xE4) Write Protection Mode Register */
  __I  uint32_t TWI_WPSR;      /**< \brief (Twi Offset: 0xE8) Write Protection Status Register */
} Twi;
#endif /* !(defined(__ASSEMBLY__) || defined(__IAR_SYSTEMS_ASM__)) */
/* -------- TWI_CR : (TWI Offset: 0x00) Control Register -------- */
#define TWI_CR_START (0x1u << 0) /**< \brief (TWI_CR) Send a START Condition */
#define TWI_CR_STOP (0x1u << 1) /**< \brief (TWI_CR) Send a STOP Condition */
#define TWI_CR_MSEN (0x1u << 2) /**< \brief (TWI_CR) TWI Master Mode Enabled */
#define TWI_CR_MSDIS (0x1u << 3) /**< \brief (TWI_CR) TWI Master Mode Disabled */
#define TWI_CR_SVEN (0x1u << 4) /**< \brief (TWI_CR) TWI Slave Mode Enabled */
#define TWI_CR_SVDIS (0x1u << 5) /**< \brief (TWI_CR) TWI Slave Mode Disabled */
#define TWI_CR_QUICK (0x1u << 6) /**< \brief (TWI_CR) SMBUS Quick Command */
#define TWI_CR_SWRST (0x1u << 7) /**< \brief (TWI_CR) Software Reset */
/* -------- TWI_MMR : (TWI Offset: 0x04) Master Mode Register -------- */
#define TWI_MMR_IADRSZ_Pos 8
#define TWI_MMR_IADRSZ_Msk (0x3u << TWI_MMR_IADRSZ_Pos) /**< \brief (TWI_MMR) Internal Device Address Size */
#define   TWI_MMR_IADRSZ_NONE (0x0u << 8) /**< \brief (TWI_MMR) No internal device address */
#define   TWI_MMR_IADRSZ_1_BYTE (0x1u << 8) /**< \brief (TWI_MMR) One-byte internal device address */
#define   TWI_MMR_IADRSZ_2_BYTE (0x2u << 8) /**< \brief (TWI_MMR) Two-byte internal device address */
#define   TWI_MMR_IADRSZ_3_BYTE (0x3u << 8) /**< \brief (TWI_MMR) Three-byte internal device address */
#define TWI_MMR_MREAD (0x1u << 12) /**< \brief (TWI_MMR) Master Read Direction */
#define TWI_MMR_DADR_Pos 16
#define TWI_MMR_DADR_Msk (0x7fu << TWI_MMR_DADR_Pos) /**< \brief (TWI_MMR) Device Address */
#define TWI_MMR_DADR(value) ((TWI_MMR_DADR_Msk & ((value) << TWI_MMR_DADR_Pos)))
/* -------- TWI_SMR : (TWI Offset: 0x08) Slave Mode Register -------- */
#define TWI_SMR_SADR_Pos 16
#define TWI_SMR_SADR_Msk (0x7fu << TWI_SMR_SADR_Pos) /**< \brief (TWI_SMR) Slave Address */
#define TWI_SMR_SADR(value) ((TWI_SMR_SADR_Msk & ((value) << TWI_SMR_SADR_Pos)))
/* -------- TWI_IADR : (TWI Offset: 0x0C) Internal Address Register -------- */
#define TWI_IADR_IADR_Pos 0
#define TWI_IADR_IADR_Msk (0xffffffu << TWI_IADR_IADR_Pos) /**< \brief (TWI_IADR) Internal Address */
#define TWI_IADR_IADR(value) ((TWI_IADR_IADR_Msk & ((value) << TWI_IADR_IADR_Pos)))
/* -------- TWI_CWGR : (TWI Offset: 0x10) Clock Waveform Generator Register -------- */
#define TWI_CWGR_CLDIV_Pos 0
#define TWI_CWGR_CLDIV_Msk (0xffu << TWI_CWGR_CLDIV_Pos) /**< \brief (TWI_CWGR) Clock Low Divider */
#define TWI_CWGR_CLDIV(value) ((TWI_CWGR_CLDIV_Msk & ((value) << TWI_CWGR_CLDIV_Pos)))
#define TWI_CWGR_CHDIV_Pos 8
#define TWI_CWGR_CHDIV_Msk (0xffu << TWI_CWGR_CHDIV_Pos) /**< \brief (TWI_CWGR) Clock High Divider */
#define TWI_CWGR_CHDIV(value) ((TWI_CWGR_CHDIV_Msk & ((value) << TWI_CWGR_CHDIV_Pos)))
#define TWI_CWGR_CKDIV_Pos 16
#define TWI_CWGR_CKDIV_Msk (0x7u << TWI_CWGR_CKDIV_Pos) /**< \brief (TWI_CWGR) Clock Divider */
#define TWI_CWGR_CKDIV(value) ((TWI_CWGR_CKDIV_Msk & ((value) << TWI_CWGR_CKDIV_Pos)))
#define TWI_CWGR_HOLD_Pos 24
#define TWI_CWGR_HOLD_Msk (0x1fu << TWI_CWGR_HOLD_Pos) /**< \brief (TWI_CWGR) TWD Hold Time versus TWCK falling */
#define TWI_CWGR_HOLD(value) ((TWI_CWGR_HOLD_Msk & ((value) << TWI_CWGR_HOLD_Pos)))
/* -------- TWI_SR : (TWI Offset: 0x20) Status Register -------- */
#define TWI_SR_TXCOMP (0x1u << 0) /**< \brief (TWI_SR) Transmission Completed (automatically set / reset) */
#define TWI_SR_RXRDY (0x1u << 1) /**< \brief (TWI_SR) Receive Holding Register Ready (automatically set / reset) */
#define TWI_SR_TXRDY (0x1u << 2) /**< \brief (TWI_SR) Transmit Holding Register Ready (automatically set / reset) */
#define TWI_SR_SVREAD (0x1u << 3) /**< \brief (TWI_SR) Slave Read (automatically set / reset) */
#define TWI_SR_SVACC (0x1u << 4) /**< \brief (TWI_SR) Slave Access (automatically set / reset) */
#define TWI_SR_GACC (0x1u << 5) /**< \brief (TWI_SR) General Call Access (clear on read) */
#define TWI_SR_OVRE (0x1u << 6) /**< \brief (TWI_SR) Overrun Error (clear on read) */
#define TWI_SR_NACK (0x1u << 8) /**< \brief (TWI_SR) Not Acknowledged (clear on read) */
#define TWI_SR_ARBLST (0x1u << 9) /**< \brief (TWI_SR) Arbitration Lost (clear on read) */
#define TWI_SR_SCLWS (0x1u << 10) /**< \brief (TWI_SR) Clock Wait State (automatically set / reset) */
#define TWI_SR_EOSACC (0x1u << 11) /**< \brief (TWI_SR) End Of Slave Access (clear on read) */
/* -------- TWI_IER : (TWI Offset: 0x24) Interrupt Enable Register -------- */
#define TWI_IER_TXCOMP (0x1u << 0) /**< \brief (TWI_IER) Transmission Completed Interrupt Enable */
#define TWI_IER_RXRDY (0x1u << 1) /**< \brief (TWI_IER) Receive Holding Register Ready Interrupt Enable */
#define TWI_IER_TXRDY (0x1u << 2) /**< \brief (TWI_IER) Transmit Holding Register Ready Interrupt Enable */
#define TWI_IER_SVACC (0x1u << 4) /**< \brief (TWI_IER) Slave Access Interrupt Enable */
#define TWI_IER_GACC (0x1u << 5) /**< \brief (TWI_IER) General Call Access Interrupt Enable */
#define TWI_IER_OVRE (0x1u << 6) /**< \brief (TWI_IER) Overrun Error Interrupt Enable */
#define TWI_IER_NACK (0x1u << 8) /**< \brief (TWI_IER) Not Acknowledge Interrupt Enable */
#define TWI_IER_ARBLST (0x1u << 9) /**< \brief (TWI_IER) Arbitration Lost Interrupt Enable */
#define TWI_IER_SCL_WS (0x1u << 10) /**< \brief (TWI_IER) Clock Wait State Interrupt Enable */
#define TWI_IER_EOSACC (0x1u << 11) /**< \brief (TWI_IER) End Of Slave Access Interrupt Enable */
/* -------- TWI_IDR : (TWI Offset: 0x28) Interrupt Disable Register -------- */
#define TWI_IDR_TXCOMP (0x1u << 0) /**< \brief (TWI_IDR) Transmission Completed Interrupt Disable */
#define TWI_IDR_RXRDY (0x1u << 1) /**< \brief (TWI_IDR) Receive Holding Register Ready Interrupt Disable */
#define TWI_IDR_TXRDY (0x1u << 2) /**< \brief (TWI_IDR) Transmit Holding Register Ready Interrupt Disable */
#define TWI_IDR_SVACC (0x1u << 4) /**< \brief (TWI_IDR) Slave Access Interrupt Disable */
#define TWI_IDR_GACC (0x1u << 5) /**< \brief (TWI_IDR) General Call Access Interrupt Disable */
#define TWI_IDR_OVRE (0x1u << 6) /**< \brief (TWI_IDR) Overrun Error Interrupt Disable */
#define TWI_IDR_NACK (0x1u << 8) /**< \brief (TWI_IDR) Not Acknowledge Interrupt Disable */
#define TWI_IDR_ARBLST (0x1u << 9) /**< \brief (TWI_IDR) Arbitration Lost Interrupt Disable */
#define TWI_IDR_SCL_WS (0x1u << 10) /**< \brief (TWI_IDR) Clock Wait State Interrupt Disable */
#define TWI_IDR_EOSACC (0x1u << 11) /**< \brief (TWI_IDR) End Of Slave Access Interrupt Disable */
/* -------- TWI_IMR : (TWI Offset: 0x2C) Interrupt Mask Register -------- */
#define TWI_IMR_TXCOMP (0x1u << 0) /**< \brief (TWI_IMR) Transmission Completed Interrupt Mask */
#define TWI_IMR_RXRDY (0x1u << 1) /**< \brief (TWI_IMR) Receive Holding Register Ready Interrupt Mask */
#define TWI_IMR_TXRDY (0x1u << 2) /**< \brief (TWI_IMR) Transmit Holding Register Ready Interrupt Mask */
#define TWI_IMR_SVACC (0x1u << 4) /**< \brief (TWI_IMR) Slave Access Interrupt Mask */
#define TWI_IMR_GACC (0x1u << 5) /**< \brief (TWI_IMR) General Call Access Interrupt Mask */
#define TWI_IMR_OVRE (0x1u << 6) /**< \brief (TWI_IMR) Overrun Error Interrupt Mask */
#define TWI_IMR_NACK (0x1u << 8) /**< \brief (TWI_IMR) Not Acknowledge Interrupt Mask */
#define TWI_IMR_ARBLST (0x1u << 9) /**< \brief (TWI_IMR) Arbitration Lost Interrupt Mask */
#define TWI_IMR_SCL_WS (0x1u << 10) /**< \brief (TWI_IMR) Clock Wait State Interrupt Mask */
#define TWI_IMR_EOSACC (0x1u << 11) /**< \brief (TWI_IMR) End Of Slave Access Interrupt Mask */
/* -------- TWI_RHR : (TWI Offset: 0x30) Receive Holding Register -------- */
#define TWI_RHR_RXDATA_Pos 0
#define TWI_RHR_RXDATA_Msk (0xffu << TWI_RHR_RXDATA_Pos) /**< \brief (TWI_RHR) Master or Slave Receive Holding Data */
/* -------- TWI_THR : (TWI Offset: 0x34) Transmit Holding Register -------- */
#define TWI_THR_TXDATA_Pos 0
#define TWI_THR_TXDATA_Msk (0xffu << TWI_THR_TXDATA_Pos) /**< \brief (TWI_THR) Master or Slave Transmit Holding Data */
#define TWI_THR_TXDATA(value) ((TWI_THR_TXDATA_Msk & ((value) << TWI_THR_TXDATA_Pos)))
/* -------- TWI_WPMR : (TWI Offset: 0xE4) Write Protection Mode Register -------- */
#define TWI_WPMR_WPEN (0x1u << 0) /**< \brief (TWI_WPMR) Write Protection Enable */
#define TWI_WPMR_WPKEY_Pos 8
#define TWI_WPMR_WPKEY_Msk (0xffffffu << TWI_WPMR_WPKEY_Pos) /**< \brief (TWI_WPMR) Write Protection Key */
#define   TWI_WPMR_WPKEY_PASSWD (0x545749u << 8) /**< \brief (TWI_WPMR) Writing any other value in this field aborts the write operation of the WPEN bit.Always reads as 0 */
/* -------- TWI_WPSR : (TWI Offset: 0xE8) Write Protection Status Register -------- */
#define TWI_WPSR_WPVS (0x1u << 0) /**< \brief (TWI_WPSR) Write Protection Violation Status */
#define TWI_WPSR_WPVSRC_Pos 8
#define TWI_WPSR_WPVSRC_Msk (0xffffffu << TWI_WPSR_WPVSRC_Pos) /**< \brief (TWI_WPSR) Write Protection Violation Source */

/*@}*/


#endif /* _SAM_TWI_COMPONENT_ */