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/******************************************************************************
* The MIT License
*
* Copyright (c) 2012 LeafLabs, LLC.
*
* 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_I2C_PRIVATE_H_
#define _LIBMAPLE_I2C_PRIVATE_H_
#include <libmaple/i2c_common.h>
/* For old-style definitions (SDA/SCL on same GPIO device) */
#define I2C_DEV_OLD(num, port, sda, scl) \
{ \
.regs = I2C##num##_BASE, \
.gpio_port = port, \
.scl_port = NULL, \
.sda_port = NULL, \
.sda_pin = sda, \
.scl_pin = scl, \
.clk_id = RCC_I2C##num, \
.ev_nvic_line = NVIC_I2C##num##_EV, \
.er_nvic_line = NVIC_I2C##num##_ER, \
.state = I2C_STATE_DISABLED, \
}
/* For new-style definitions (SDA/SCL may be on different GPIO devices) */
#define I2C_DEV_NEW(num, sdaport, sdabit, sclport, sclbit) \
{ \
.regs = I2C##num##_BASE, \
.gpio_port = NULL, \
.scl_port = sclport, \
.scl_pin = sclbit, \
.sda_port = sdaport, \
.sda_pin = sdabit, \
.clk_id = RCC_I2C##num, \
.ev_nvic_line = NVIC_I2C##num##_EV, \
.er_nvic_line = NVIC_I2C##num##_ER, \
.state = I2C_STATE_DISABLED, \
}
void _i2c_irq_handler(i2c_dev *dev);
void _i2c_irq_error_handler(i2c_dev *dev);
struct gpio_dev;
static inline struct gpio_dev* scl_port(const i2c_dev *dev) {
return (dev->gpio_port == NULL) ? dev->scl_port : dev->gpio_port;
}
static inline struct gpio_dev* sda_port(const i2c_dev *dev) {
return (dev->gpio_port == NULL) ? dev->sda_port : dev->gpio_port;
}
/* Auxiliary procedure for enabling an I2C peripheral; `flags' as for
* i2c_master_enable(). */
void _i2c_set_ccr_trise(i2c_dev *dev, uint32 flags);
#endif /* _LIBMAPLE_I2C_PRIVATE_H_ */
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