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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file templates/i2c_lld.h
* @brief I2C Driver subsystem low level driver header template.
*
* @addtogroup I2C_LLD
* @{
*/
#ifndef _I2C_LLD_H_
#define _I2C_LLD_H_
#if CH_HAL_USE_I2C || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Type of a structure representing an I2C driver.
*/
typedef struct I2CDriver I2CDriver;
/**
* @brief I2C completion callback type.
*
* @param[in] i2cp pointer to the @p I2CDriver object
* @param[in] sts operation status
*/
typedef void (*i2ccallback_t)(I2CDriver *i2cp, i2cstatus_t sts);
/**
* @brief Driver configuration structure.
* @note Implementations may extend this structure to contain more,
* architecture dependent, fields.
*/
typedef struct {
/** @brief I2C bus bit rate.*/
uint32_t ic_speed;
/* End of the mandatory fields.*/
} I2CConfig;
/**
* @brief Structure representing an I2C driver.
* @note Implementations may extend this structure to contain more,
* architecture dependent, fields.
*/
struct I2CDriver {
/** @brief Driver state.*/
i2cstate_t id_state;
/** @brief Current configuration data.*/
const I2CConfig *id_config;
/** @brief Current callback.*/
i2ccallback_t id_callback;
#if defined(I2C_DRIVER_EXT_FIELDS)
I2C_DRIVER_EXT_FIELDS
#endif
/* End of the mandatory fields.*/
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void i2c_lld_init(void);
void i2c_lld_start(I2CDriver *i2cp);
void i2c_lld_stop(I2CDriver *i2cp);
void i2c_lld_master_start(I2CDriver *i2cp, uint16_t header);
void i2c_lld_master_stop(I2CDriver *i2cp);
void i2c_lld_master_restart(I2CDriver *i2cp);
void i2c_lld_master_transmit(I2CDriver *i2cp, size_t n,
const uint8_t *txbuf);
void i2c_lld_master_receive(I2CDriver *i2cp, size_t n, uint8_t *rxbuf);
#ifdef __cplusplus
}
#endif
#endif /* CH_HAL_USE_I2C */
#endif /* _I2C_LLD_H_ */
/** @} */
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