rt-thread/components/drivers/i2c/i2c-bit-ops.h

/*
 * File      : i2c-bit-ops.h
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author		Notes
 * 2012-04-25     weety		first version
 */

#ifndef __I2C_BIT_OPS_H__
#define __I2C_BIT_OPS_H__

#ifdef __cplusplus
extern "C" {
#endif

struct rt_i2c_bit_ops {
	void *data;  /* private data for lowlevel routines */
	void (*set_sda) (void *data, rt_int32_t state);
	void (*set_scl) (void *data, rt_int32_t state);
	rt_int32_t  (*get_sda) (void *data);
	rt_int32_t  (*get_scl) (void *data);
	
	void (*udelay) (rt_uint32_t us);

	rt_uint32_t delay_us;  /* scl and sda line delay */
	rt_uint32_t timeout;  /* in tick */
};

rt_err_t rt_i2c_bit_add_bus(struct rt_i2c_bus *bus);

#ifdef __cplusplus
}
#endif

#endif