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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung (from <libmaple/i2c.h>).
* Copyright (c) 2012 LeafLabs, LLC.
* Copyright (c) 2014 Google, Inc.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
#ifndef _LIBMAPLE_STM32F2_I2C_H_
#define _LIBMAPLE_STM32F2_I2C_H_
#include <libmaple/i2c_common.h>
#include <libmaple/stm32.h>
/*
* Register maps
*/
/** I2C register map type */
typedef struct i2c_reg_map {
__io uint32 CR1; /**< Control register 1 */
__io uint32 CR2; /**< Control register 2 */
__io uint32 OAR1; /**< Own address register 1 */
__io uint32 OAR2; /**< Own address register 2 */
__io uint32 DR; /**< Data register */
__io uint32 SR1; /**< Status register 1 */
__io uint32 SR2; /**< Status register 2 */
__io uint32 CCR; /**< Clock control register */
__io uint32 TRISE; /**< TRISE (rise time) register */
__io uint32 FLTR; /**< Noise filter register */
} i2c_reg_map;
/** I2C1 register map base pointer */
#define I2C1_BASE ((struct i2c_reg_map*)0x40005400)
/** I2C2 register map base pointer */
#define I2C2_BASE ((struct i2c_reg_map*)0x40005800)
/** I2C3 register map base pointer */
#define I2C3_BASE ((struct i2c_reg_map*)0x40005C00)
/*
* Devices
*/
extern i2c_dev* const I2C1;
extern i2c_dev* const I2C2;
extern i2c_dev* const I2C3;
/*
* For internal use
*/
static inline uint32 _i2c_bus_clk(i2c_dev *dev) {
/* All the I2C peripherals are on APB1 */
return STM32_PCLK1 / (1000 * 1000);
}
#undef _I2C_HAVE_IRQ_FIXUP
#undef _I2C_HAVE_DEPRECATED_I2C_REMAP
#endif /* _LIBMAPLE_STM32F1_I2C_H_ */
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