1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 #ifndef MBED_I2C_API_H
17 #define MBED_I2C_API_H
27 typedef struct i2c_s i2c_t;
30 I2C_ERROR_NO_SLAVE = -1,
31 I2C_ERROR_BUS_BUSY = -2
34 void i2c_init (i2c_t *obj, PinName sda, PinName scl);
35 void i2c_frequency (i2c_t *obj, int hz);
36 int i2c_start (i2c_t *obj);
37 int i2c_stop (i2c_t *obj);
38 int i2c_read (i2c_t *obj, int address, char *data, int length, int stop);
39 int i2c_write (i2c_t *obj, int address, const char *data, int length, int stop);
40 void i2c_reset (i2c_t *obj);
41 int i2c_byte_read (i2c_t *obj, int last);
42 int i2c_byte_write (i2c_t *obj, int data);
45 void i2c_slave_mode (i2c_t *obj, int enable_slave);
46 int i2c_slave_receive(i2c_t *obj);
47 int i2c_slave_read (i2c_t *obj, char *data, int length);
48 int i2c_slave_write (i2c_t *obj, const char *data, int length);
49 int i2c_slave_byte_read(i2c_t *obj, int last);
50 int i2c_slave_byte_write(i2c_t *obj, int data);
51 void i2c_slave_address(i2c_t *obj, int idx, uint32_t address, uint32_t mask);