55460652d3
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2128 bbd45198-f89e-11dd-88c7-29a3b14d5316
41 lines
944 B
C
41 lines
944 B
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, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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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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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 *bus);
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#ifdef __cplusplus
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}
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#endif
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#endif |