| author | Knud Baastrup <kba@deif.com> |
| Tue, 14 Apr 2015 13:10:55 -0400 | |
| changeset 2628 | d123727b805b |
| parent 2589 | 2b9c78543663 |
| permissions | -rw-r--r-- |
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/****************************************************************************** |
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* |
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* $Id$ |
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* |
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* Copyright (C) 2012 Florian Pose, Ingenieurgemeinschaft IgH |
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* |
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* This file is part of the IgH EtherCAT Master. |
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* |
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* The IgH EtherCAT Master is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License version 2, as |
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* published by the Free Software Foundation. |
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* |
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* The IgH EtherCAT Master is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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* Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with the IgH EtherCAT Master; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* |
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* --- |
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* |
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* The license mentioned above concerns the source code only. Using the |
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* EtherCAT technology and brand is only permitted in compliance with the |
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* industrial property and similar rights of Beckhoff Automation GmbH. |
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* |
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*****************************************************************************/ |
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/** |
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\file |
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EtherCAT register request structure. |
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*/ |
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/*****************************************************************************/ |
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#ifndef __EC_REG_REQUEST_H__ |
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#define __EC_REG_REQUEST_H__ |
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#include <linux/list.h> |
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#include "globals.h" |
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/*****************************************************************************/ |
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/** Register request. |
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*/ |
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struct ec_reg_request {
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struct list_head list; /**< List item. */ |
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size_t mem_size; /**< Size of data memory. */ |
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uint8_t *data; /**< Pointer to data memory. */ |
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ec_direction_t dir; /**< Direction. EC_DIR_OUTPUT means writing to the |
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slave, EC_DIR_INPUT means reading from the slave. */ |
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uint16_t address; /**< Register address. */ |
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size_t transfer_size; /**< Size of the data to transfer. */ |
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ec_internal_request_state_t state; /**< Request state. */ |
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uint16_t ring_position; /**< Ring position for emergency requests. */ |
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}; |
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/*****************************************************************************/ |
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int ec_reg_request_init(ec_reg_request_t *, size_t); |
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void ec_reg_request_clear(ec_reg_request_t *); |
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/*****************************************************************************/ |
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#endif |