| /* ---------------------------------------------------------------------------- | |
| * SAM Software Package License | |
| * ---------------------------------------------------------------------------- | |
| * Copyright (c) 2015, 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 TWID_HEADER__ | |
| #define TWID_HEADER__ | |
| /*------------------------------------------------------------------------------ | |
| * Header | |
| *----------------------------------------------------------------------------*/ | |
| #include "peripherals/twi.h" | |
| #include "mutex.h" | |
| #include "io.h" | |
| /*------------------------------------------------------------------------------ | |
| * Types | |
| *----------------------------------------------------------------------------*/ | |
| #define TWID_SUCCESS (0) | |
| #define TWID_INVALID_ID (1) | |
| #define TWID_INVALID_BITRATE (2) | |
| #define TWID_ERROR_LOCK (3) | |
| #define TWID_ERROR_DUPLEX (4) | |
| #define TWID_ERROR_ACK (5) | |
| #define TWID_ERROR_TIMEOUT (6) | |
| #define TWID_ERROR_TRANSFER (7) | |
| enum _twid_trans_mode | |
| { | |
| TWID_MODE_POLLING, | |
| TWID_MODE_FIFO, | |
| TWID_MODE_DMA | |
| }; | |
| struct _twi_desc; | |
| typedef void (*twid_callback_t)(struct _twi_desc* spid, void* args); | |
| struct _twi_desc | |
| { | |
| Twi* addr; | |
| uint32_t freq; | |
| uint32_t slave_addr; | |
| uint32_t iaddr; | |
| uint32_t isize; | |
| uint8_t transfert_mode; | |
| /* implicit internal padding is mandatory here */ | |
| mutex_t mutex; | |
| uint32_t region_start; | |
| uint32_t region_end; | |
| twid_callback_t callback; | |
| void* cb_args; | |
| }; | |
| /*------------------------------------------------------------------------------ | |
| * Functions | |
| *----------------------------------------------------------------------------*/ | |
| extern void twid_configure(struct _twi_desc* desc); | |
| extern uint32_t twid_transfert(struct _twi_desc* desc, struct _buffer* rx, | |
| struct _buffer* tx, twid_callback_t cb, | |
| void* user_args); | |
| extern void twid_finish_transfert_callback(struct _twi_desc* desc, | |
| void* user_args); | |
| extern void twid_finish_transfert(struct _twi_desc* desc); | |
| extern uint32_t twid_is_busy(const struct _twi_desc* desc); | |
| extern void twid_wait_transfert(const struct _twi_desc* desc); | |
| #endif /* TWID_HEADER__ */ |