Tomo Yamanaka / mbed-dev

mbed library sources. Supersedes mbed-src. GR-PEACH runs on RAM.

Fork of mbed-dev by mbed official

common/I2CSlave.cpp@103:493a29d2d4d7, 2016-03-30 (annotated)

Committer:
1050186
Date:
Wed Mar 30 11:41:25 2016 +0000
Revision:
103:493a29d2d4d7
Parent:
0:9b334a45a8ff 
GR-PEACH runs on RAM.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "I2CSlave.h"
bogdanm 0:9b334a45a8ff 17
bogdanm 0:9b334a45a8ff 18 #if DEVICE_I2CSLAVE
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 namespace mbed {
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 I2CSlave::I2CSlave(PinName sda, PinName scl) : _i2c() {
bogdanm 0:9b334a45a8ff 23 i2c_init(&_i2c, sda, scl);
bogdanm 0:9b334a45a8ff 24 i2c_frequency(&_i2c, 100000);
bogdanm 0:9b334a45a8ff 25 i2c_slave_mode(&_i2c, 1);
bogdanm 0:9b334a45a8ff 26 }
bogdanm 0:9b334a45a8ff 27
bogdanm 0:9b334a45a8ff 28 void I2CSlave::frequency(int hz) {
bogdanm 0:9b334a45a8ff 29 i2c_frequency(&_i2c, hz);
bogdanm 0:9b334a45a8ff 30 }
bogdanm 0:9b334a45a8ff 31
bogdanm 0:9b334a45a8ff 32 void I2CSlave::address(int address) {
bogdanm 0:9b334a45a8ff 33 int addr = (address & 0xFF) | 1;
bogdanm 0:9b334a45a8ff 34 i2c_slave_address(&_i2c, 0, addr, 0);
bogdanm 0:9b334a45a8ff 35 }
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 int I2CSlave::receive(void) {
bogdanm 0:9b334a45a8ff 38 return i2c_slave_receive(&_i2c);
bogdanm 0:9b334a45a8ff 39 }
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 int I2CSlave::read(char *data, int length) {
bogdanm 0:9b334a45a8ff 42 return i2c_slave_read(&_i2c, data, length) != length;
bogdanm 0:9b334a45a8ff 43 }
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 int I2CSlave::read(void) {
bogdanm 0:9b334a45a8ff 46 return i2c_byte_read(&_i2c, 0);
bogdanm 0:9b334a45a8ff 47 }
bogdanm 0:9b334a45a8ff 48
bogdanm 0:9b334a45a8ff 49 int I2CSlave::write(const char *data, int length) {
bogdanm 0:9b334a45a8ff 50 return i2c_slave_write(&_i2c, data, length) != length;
bogdanm 0:9b334a45a8ff 51 }
bogdanm 0:9b334a45a8ff 52
bogdanm 0:9b334a45a8ff 53 int I2CSlave::write(int data) {
bogdanm 0:9b334a45a8ff 54 return i2c_byte_write(&_i2c, data);
bogdanm 0:9b334a45a8ff 55 }
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 void I2CSlave::stop(void) {
bogdanm 0:9b334a45a8ff 58 i2c_stop(&_i2c);
bogdanm 0:9b334a45a8ff 59 }
bogdanm 0:9b334a45a8ff 60
bogdanm 0:9b334a45a8ff 61 }
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 #endif