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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.
*****************************************************************************/
#include "i2c_private.h"
#include <libmaple/i2c.h>
/*
* Devices
*/
static i2c_dev i2c1 = I2C_DEV(1, &gpiob, 7, 6);
static i2c_dev i2c2 = I2C_DEV(2, &gpiob, 11, 10);
/** STM32F1 I2C device 1 */
i2c_dev* const I2C1 = &i2c1;
/** STM32F1 I2C device 2 */
i2c_dev* const I2C2 = &i2c2;
/*
* Routines
*/
void i2c_config_gpios(const i2c_dev *dev) {
gpio_set_mode(dev->gpio_port, dev->sda_pin, GPIO_AF_OUTPUT_OD);
gpio_set_mode(dev->gpio_port, dev->scl_pin, GPIO_AF_OUTPUT_OD);
}
void i2c_master_release_bus(const i2c_dev *dev) {
gpio_write_bit(dev->gpio_port, dev->scl_pin, 1);
gpio_write_bit(dev->gpio_port, dev->sda_pin, 1);
gpio_set_mode(dev->gpio_port, dev->scl_pin, GPIO_OUTPUT_OD);
gpio_set_mode(dev->gpio_port, dev->sda_pin, GPIO_OUTPUT_OD);
}
/*
* IRQ handlers
*/
void __irq_i2c1_ev(void) {
_i2c_irq_handler(I2C1);
}
void __irq_i2c2_ev(void) {
_i2c_irq_handler(I2C2);
}
void __irq_i2c1_er(void) {
_i2c_irq_error_handler(I2C1);
}
void __irq_i2c2_er(void) {
_i2c_irq_error_handler(I2C2);
}
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