66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
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/*
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* Copyright (c) 2010, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \file
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* includes for i2c core functions
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* \author
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* Robert Olsson <robert@radio-sensors.com>
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*/
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#include "contiki.h"
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/* Here we define the i2c address for dev we support */
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#define I2C_AT24MAC_ADDR 0xB0 /* EUI64 ADDR */
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#define I2C_SHT2X_ADDR (0x40 << 1) /* SHT2X ADDR */
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/* Here we define a enumration for devices */
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#define I2C_AT24MAC (1<<0)
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#define I2C_SHT2X (1<<1)
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#define I2C_CO2SA (1<<2) /* Sense-Air CO2 */
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#define I2C_READ 1
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#define I2C_WRITE 0
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void i2c_init(uint32_t speed);
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uint8_t i2c_start(uint8_t addr);
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void i2c_start_wait(uint8_t addr);
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void i2c_stop(void);
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void i2c_write(uint8_t u8data);
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uint8_t i2c_readAck(void);
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uint8_t i2c_readNak(void);
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uint8_t i2c_getstatus(void);
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uint16_t i2c_probe(void);
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void i2c_read_mem(uint8_t addr, uint8_t reg, uint8_t buf[], uint8_t bytes);
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void i2c_write_mem(uint8_t addr, uint8_t reg, uint8_t value);
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void i2c_at24mac_read(char *buf, uint8_t eui64);
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extern uint16_t i2c_probed; /* i2c devices we have probed */
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