Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

drivers/I2CSlave.cpp@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1 /* mbed Microcontroller Library
elessair 0:f269e3021894 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16 #include "drivers/I2CSlave.h"
elessair 0:f269e3021894 17
elessair 0:f269e3021894 18 #if DEVICE_I2CSLAVE
elessair 0:f269e3021894 19
elessair 0:f269e3021894 20 namespace mbed {
elessair 0:f269e3021894 21
elessair 0:f269e3021894 22 I2CSlave::I2CSlave(PinName sda, PinName scl) : _i2c() {
elessair 0:f269e3021894 23 i2c_init(&_i2c, sda, scl);
elessair 0:f269e3021894 24 i2c_frequency(&_i2c, 100000);
elessair 0:f269e3021894 25 i2c_slave_mode(&_i2c, 1);
elessair 0:f269e3021894 26 }
elessair 0:f269e3021894 27
elessair 0:f269e3021894 28 void I2CSlave::frequency(int hz) {
elessair 0:f269e3021894 29 i2c_frequency(&_i2c, hz);
elessair 0:f269e3021894 30 }
elessair 0:f269e3021894 31
elessair 0:f269e3021894 32 void I2CSlave::address(int address) {
elessair 0:f269e3021894 33 int addr = (address & 0xFF) | 1;
elessair 0:f269e3021894 34 i2c_slave_address(&_i2c, 0, addr, 0);
elessair 0:f269e3021894 35 }
elessair 0:f269e3021894 36
elessair 0:f269e3021894 37 int I2CSlave::receive(void) {
elessair 0:f269e3021894 38 return i2c_slave_receive(&_i2c);
elessair 0:f269e3021894 39 }
elessair 0:f269e3021894 40
elessair 0:f269e3021894 41 int I2CSlave::read(char *data, int length) {
elessair 0:f269e3021894 42 return i2c_slave_read(&_i2c, data, length) != length;
elessair 0:f269e3021894 43 }
elessair 0:f269e3021894 44
elessair 0:f269e3021894 45 int I2CSlave::read(void) {
elessair 0:f269e3021894 46 return i2c_byte_read(&_i2c, 0);
elessair 0:f269e3021894 47 }
elessair 0:f269e3021894 48
elessair 0:f269e3021894 49 int I2CSlave::write(const char *data, int length) {
elessair 0:f269e3021894 50 return i2c_slave_write(&_i2c, data, length) != length;
elessair 0:f269e3021894 51 }
elessair 0:f269e3021894 52
elessair 0:f269e3021894 53 int I2CSlave::write(int data) {
elessair 0:f269e3021894 54 return i2c_byte_write(&_i2c, data);
elessair 0:f269e3021894 55 }
elessair 0:f269e3021894 56
elessair 0:f269e3021894 57 void I2CSlave::stop(void) {
elessair 0:f269e3021894 58 i2c_stop(&_i2c);
elessair 0:f269e3021894 59 }
elessair 0:f269e3021894 60
elessair 0:f269e3021894 61 }
elessair 0:f269e3021894 62
elessair 0:f269e3021894 63 #endif