Gan likun / mbed-dev11

1232

drivers/I2CSlave.cpp@0:06036f8bee2d, 2022-10-24 (annotated)

Committer:
ganlikun
Date:
Mon Oct 24 15:19:39 2022 +0000
Revision:
0:06036f8bee2d
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:06036f8bee2d 1 /* mbed Microcontroller Library
ganlikun 0:06036f8bee2d 2 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:06036f8bee2d 3 *
ganlikun 0:06036f8bee2d 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:06036f8bee2d 5 * you may not use this file except in compliance with the License.
ganlikun 0:06036f8bee2d 6 * You may obtain a copy of the License at
ganlikun 0:06036f8bee2d 7 *
ganlikun 0:06036f8bee2d 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:06036f8bee2d 9 *
ganlikun 0:06036f8bee2d 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:06036f8bee2d 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:06036f8bee2d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:06036f8bee2d 13 * See the License for the specific language governing permissions and
ganlikun 0:06036f8bee2d 14 * limitations under the License.
ganlikun 0:06036f8bee2d 15 */
ganlikun 0:06036f8bee2d 16 #include "drivers/I2CSlave.h"
ganlikun 0:06036f8bee2d 17
ganlikun 0:06036f8bee2d 18 #if DEVICE_I2CSLAVE
ganlikun 0:06036f8bee2d 19
ganlikun 0:06036f8bee2d 20 namespace mbed {
ganlikun 0:06036f8bee2d 21
ganlikun 0:06036f8bee2d 22 I2CSlave::I2CSlave(PinName sda, PinName scl) : _i2c() {
ganlikun 0:06036f8bee2d 23 i2c_init(&_i2c, sda, scl);
ganlikun 0:06036f8bee2d 24 i2c_frequency(&_i2c, 100000);
ganlikun 0:06036f8bee2d 25 i2c_slave_mode(&_i2c, 1);
ganlikun 0:06036f8bee2d 26 }
ganlikun 0:06036f8bee2d 27
ganlikun 0:06036f8bee2d 28 void I2CSlave::frequency(int hz) {
ganlikun 0:06036f8bee2d 29 i2c_frequency(&_i2c, hz);
ganlikun 0:06036f8bee2d 30 }
ganlikun 0:06036f8bee2d 31
ganlikun 0:06036f8bee2d 32 void I2CSlave::address(int address) {
ganlikun 0:06036f8bee2d 33 int addr = (address & 0xFF) | 1;
ganlikun 0:06036f8bee2d 34 i2c_slave_address(&_i2c, 0, addr, 0);
ganlikun 0:06036f8bee2d 35 }
ganlikun 0:06036f8bee2d 36
ganlikun 0:06036f8bee2d 37 int I2CSlave::receive(void) {
ganlikun 0:06036f8bee2d 38 return i2c_slave_receive(&_i2c);
ganlikun 0:06036f8bee2d 39 }
ganlikun 0:06036f8bee2d 40
ganlikun 0:06036f8bee2d 41 int I2CSlave::read(char *data, int length) {
ganlikun 0:06036f8bee2d 42 return i2c_slave_read(&_i2c, data, length) != length;
ganlikun 0:06036f8bee2d 43 }
ganlikun 0:06036f8bee2d 44
ganlikun 0:06036f8bee2d 45 int I2CSlave::read(void) {
ganlikun 0:06036f8bee2d 46 return i2c_byte_read(&_i2c, 0);
ganlikun 0:06036f8bee2d 47 }
ganlikun 0:06036f8bee2d 48
ganlikun 0:06036f8bee2d 49 int I2CSlave::write(const char *data, int length) {
ganlikun 0:06036f8bee2d 50 return i2c_slave_write(&_i2c, data, length) != length;
ganlikun 0:06036f8bee2d 51 }
ganlikun 0:06036f8bee2d 52
ganlikun 0:06036f8bee2d 53 int I2CSlave::write(int data) {
ganlikun 0:06036f8bee2d 54 return i2c_byte_write(&_i2c, data);
ganlikun 0:06036f8bee2d 55 }
ganlikun 0:06036f8bee2d 56
ganlikun 0:06036f8bee2d 57 void I2CSlave::stop(void) {
ganlikun 0:06036f8bee2d 58 i2c_stop(&_i2c);
ganlikun 0:06036f8bee2d 59 }
ganlikun 0:06036f8bee2d 60
ganlikun 0:06036f8bee2d 61 }
ganlikun 0:06036f8bee2d 62
ganlikun 0:06036f8bee2d 63 #endif
ganlikun 0:06036f8bee2d 64