54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
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* File : i2c-bit-ops.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General 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 this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2012-04-25 weety first version
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*/
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#ifndef __I2C_BIT_OPS_H__
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#define __I2C_BIT_OPS_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct rt_i2c_bit_ops
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{
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void *data; /* private data for lowlevel routines */
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void (*set_sda)(void *data, rt_int32_t state);
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void (*set_scl)(void *data, rt_int32_t state);
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rt_int32_t (*get_sda)(void *data);
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rt_int32_t (*get_scl)(void *data);
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void (*udelay)(rt_uint32_t us);
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rt_uint32_t delay_us; /* scl and sda line delay */
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rt_uint32_t timeout; /* in tick */
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};
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rt_err_t rt_i2c_bit_add_bus(struct rt_i2c_bus_device *bus,
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const char *bus_name);
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#ifdef __cplusplus
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}
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#endif
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#endif
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