diff options
Diffstat (limited to 'bsps/arm/atsam/include/bsp/atsam-i2c.h')
| -rw-r--r-- | bsps/arm/atsam/include/bsp/atsam-i2c.h | 63 |
1 files changed, 32 insertions, 31 deletions
diff --git a/bsps/arm/atsam/include/bsp/atsam-i2c.h b/bsps/arm/atsam/include/bsp/atsam-i2c.h index ae0fe97584..9c6ad859dd 100644 --- a/bsps/arm/atsam/include/bsp/atsam-i2c.h +++ b/bsps/arm/atsam/include/bsp/atsam-i2c.h @@ -1,15 +1,28 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /* - * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * Copyright (c) 2016 embedded brains GmbH & Co. KG * - * embedded brains GmbH - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * <info@embedded-brains.de> + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 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 LIBBSP_ARM_ATSAM_ATSAM_I2C_H @@ -28,35 +41,23 @@ extern "C" { #define TWI_AMOUNT_PINS 2 -typedef enum { - TX_SEND_DATA, - TX_SEND_STOP, - TX_CONT_MESSAGE_NEEDED, - RX_SEND_DATA, - RX_SEND_STOP, - RX_CONT_MESSAGE_NEEDED, - TX_RX_STOP_SENT -}transfer_state; - -typedef struct { - uint8_t status; - uint8_t *data; - bool stop_request; - uint32_t data_size; - uint32_t already_transferred; - transfer_state trans_state; -} transfer_desc; - typedef struct { i2c_bus base; - i2c_msg *msgs; Twihs *regs; - transfer_desc trans_desc; + + /* First message and number of messages that have to be processed. */ + i2c_msg *msgs; uint32_t msg_todo; + + /* Information about the current transfer. */ + bool stop_request; uint32_t current_msg_todo; uint8_t *current_msg_byte; + + /* Error information that can be returned to the task */ + uint32_t err; + uint32_t output_clock; - bool read; rtems_binary_semaphore sem; rtems_vector_number irq; } atsam_i2c_bus; |