| /* ---------------------------------------------------------------------------- | |
| * ATMEL Microcontroller Software Support | |
| * ---------------------------------------------------------------------------- | |
| * Copyright (c) 2008, Atmel Corporation | |
| * | |
| * All rights reserved. | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions are 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 TWI_H | |
| #define TWI_H | |
| //------------------------------------------------------------------------------ | |
| // Headers | |
| //------------------------------------------------------------------------------ | |
| #include <board.h> | |
| //------------------------------------------------------------------------------ | |
| // Global definitions | |
| //------------------------------------------------------------------------------ | |
| // Missing AT91C_TWI_TXRDY definition. | |
| #ifndef AT91C_TWI_TXRDY | |
| #define AT91C_TWI_TXRDY AT91C_TWI_TXRDY_MASTER | |
| #endif | |
| // Missing AT91C_TWI_TXCOMP definition. | |
| #ifndef AT91C_TWI_TXCOMP | |
| #define AT91C_TWI_TXCOMP AT91C_TWI_TXCOMP_MASTER | |
| #endif | |
| //------------------------------------------------------------------------------ | |
| // Global macros | |
| //------------------------------------------------------------------------------ | |
| /// Returns 1 if the TXRDY bit (ready to transmit data) is set in the given | |
| /// status register value. | |
| #define TWI_STATUS_TXRDY(status) ((status & AT91C_TWI_TXRDY) == AT91C_TWI_TXRDY) | |
| /// Returns 1 if the RXRDY bit (ready to receive data) is set in the given | |
| /// status register value. | |
| #define TWI_STATUS_RXRDY(status) ((status & AT91C_TWI_RXRDY) == AT91C_TWI_RXRDY) | |
| /// Returns 1 if the TXCOMP bit (transfer complete) is set in the given | |
| /// status register value. | |
| #define TWI_STATUS_TXCOMP(status) ((status & AT91C_TWI_TXCOMP) == AT91C_TWI_TXCOMP) | |
| //------------------------------------------------------------------------------ | |
| // Global functions | |
| //------------------------------------------------------------------------------ | |
| extern void TWI_Configure(AT91S_TWI *pTwi, unsigned int twck, unsigned int mck); | |
| extern void TWI_Stop(AT91S_TWI *pTwi); | |
| extern void TWI_StartRead( | |
| AT91S_TWI *pTwi, | |
| unsigned char address, | |
| unsigned int iaddress, | |
| unsigned char isize); | |
| extern unsigned char TWI_ReadByte(AT91S_TWI *pTwi); | |
| extern void TWI_WriteByte(AT91S_TWI *pTwi, unsigned char byte); | |
| extern void TWI_StartWrite( | |
| AT91S_TWI *pTwi, | |
| unsigned char address, | |
| unsigned int iaddress, | |
| unsigned char isize, | |
| unsigned char byte); | |
| extern unsigned char TWI_ByteReceived(AT91S_TWI *pTwi); | |
| extern unsigned char TWI_ByteSent(AT91S_TWI *pTwi); | |
| extern unsigned char TWI_TransferComplete(AT91S_TWI *pTwi); | |
| extern void TWI_EnableIt(AT91S_TWI *pTwi, unsigned int sources); | |
| extern void TWI_DisableIt(AT91S_TWI *pTwi, unsigned int sources); | |
| extern unsigned int TWI_GetStatus(AT91S_TWI *pTwi); | |
| extern unsigned int TWI_GetMaskedStatus(AT91S_TWI *pTwi); | |
| #endif //#ifndef TWI_H |