teralytic / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed by teralytic

common/I2CSlave.cpp@148:4802eb17e82b, 2016-10-17 (annotated)

Committer:
rodriguise
Date:
Mon Oct 17 18:47:01 2016 +0000
Revision:
148:4802eb17e82b
Parent:
144:ef7eb2e8f9f7 
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<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "I2CSlave.h"
<> 144:ef7eb2e8f9f7 17
<> 144:ef7eb2e8f9f7 18 #if DEVICE_I2CSLAVE
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 namespace mbed {
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 I2CSlave::I2CSlave(PinName sda, PinName scl) : _i2c() {
<> 144:ef7eb2e8f9f7 23 i2c_init(&_i2c, sda, scl);
<> 144:ef7eb2e8f9f7 24 i2c_frequency(&_i2c, 100000);
<> 144:ef7eb2e8f9f7 25 i2c_slave_mode(&_i2c, 1);
<> 144:ef7eb2e8f9f7 26 }
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 void I2CSlave::frequency(int hz) {
<> 144:ef7eb2e8f9f7 29 i2c_frequency(&_i2c, hz);
<> 144:ef7eb2e8f9f7 30 }
<> 144:ef7eb2e8f9f7 31
<> 144:ef7eb2e8f9f7 32 void I2CSlave::address(int address) {
<> 144:ef7eb2e8f9f7 33 int addr = (address & 0xFF) | 1;
<> 144:ef7eb2e8f9f7 34 i2c_slave_address(&_i2c, 0, addr, 0);
<> 144:ef7eb2e8f9f7 35 }
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 int I2CSlave::receive(void) {
<> 144:ef7eb2e8f9f7 38 return i2c_slave_receive(&_i2c);
<> 144:ef7eb2e8f9f7 39 }
<> 144:ef7eb2e8f9f7 40
<> 144:ef7eb2e8f9f7 41 int I2CSlave::read(char *data, int length) {
<> 144:ef7eb2e8f9f7 42 return i2c_slave_read(&_i2c, data, length) != length;
<> 144:ef7eb2e8f9f7 43 }
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 int I2CSlave::read(void) {
<> 144:ef7eb2e8f9f7 46 return i2c_byte_read(&_i2c, 0);
<> 144:ef7eb2e8f9f7 47 }
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 int I2CSlave::write(const char *data, int length) {
<> 144:ef7eb2e8f9f7 50 return i2c_slave_write(&_i2c, data, length) != length;
<> 144:ef7eb2e8f9f7 51 }
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 int I2CSlave::write(int data) {
<> 144:ef7eb2e8f9f7 54 return i2c_byte_write(&_i2c, data);
<> 144:ef7eb2e8f9f7 55 }
<> 144:ef7eb2e8f9f7 56
<> 144:ef7eb2e8f9f7 57 void I2CSlave::stop(void) {
<> 144:ef7eb2e8f9f7 58 i2c_stop(&_i2c);
<> 144:ef7eb2e8f9f7 59 }
<> 144:ef7eb2e8f9f7 60
<> 144:ef7eb2e8f9f7 61 }
<> 144:ef7eb2e8f9f7 62
<> 144:ef7eb2e8f9f7 63 #endif