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/*___________________________________________________
| _____ _____ _ _ _ |
| | __ \ | __ (_) | | | |
| | |__) |__ _ __ __ _ _ _| |__) || | ___ | |_ |
| | ___/ _ \ '_ \ / _` | | | | ___/ | |/ _ \| __| |
| | | | __/ | | | (_| | |_| | | | | | (_) | |_ |
| |_| \___|_| |_|\__, |\__,_|_| |_|_|\___/ \__| |
| __/ | |
| GNU/Linux based |___/ Multi-Rotor UAV Autopilot |
|___________________________________________________|
Threadsafe Linux I2C Interface
Copyright (C) 2013 Tobias Simon, Ilmenau University of Technology
This program 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 2 of the License, or
(at your option) any later version.
This program 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. */
#ifndef __I2C_H__
#define __I2C_H__
#include <stdint.h>
#include <stddef.h>
/* bus type definition: */
typedef int i2c_bus_t;
/* device type definition: */
typedef struct
{
i2c_bus_t *bus;
uint8_t addr;
}
i2c_dev_t;
int i2c_bus_open(i2c_bus_t *bus, char *path);
int i2c_bus_close(i2c_bus_t *bus);
void i2c_dev_init(i2c_dev_t *dev, i2c_bus_t *bus, uint8_t addr);
int i2c_xfer(i2c_dev_t *dev, uint8_t len_wr, uint8_t *wr_data, uint8_t len_rd, uint8_t *rd_data);
int i2c_write(i2c_dev_t *dev, uint8_t val);
int i2c_write_reg(i2c_dev_t *dev, uint8_t reg, uint8_t val);
int i2c_read(i2c_dev_t *dev);
int i2c_read_reg(i2c_dev_t *dev, uint8_t reg);
int i2c_read_block_reg(i2c_dev_t *dev, uint8_t reg, uint8_t *buf, size_t len);
#endif /* __I2C_H__ */
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