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drivers/I2CSlave.cpp@2:7aab896b1a3b, 2019-03-13 (annotated)
- Committer:
- kevman
- Date:
- Wed Mar 13 11:03:24 2019 +0000
- Revision:
- 2:7aab896b1a3b
- Parent:
- 0:38ceb79fef03
2019-03-13
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kevman | 0:38ceb79fef03 | 1 | /* mbed Microcontroller Library |
kevman | 0:38ceb79fef03 | 2 | * Copyright (c) 2006-2013 ARM Limited |
kevman | 0:38ceb79fef03 | 3 | * |
kevman | 0:38ceb79fef03 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
kevman | 0:38ceb79fef03 | 5 | * you may not use this file except in compliance with the License. |
kevman | 0:38ceb79fef03 | 6 | * You may obtain a copy of the License at |
kevman | 0:38ceb79fef03 | 7 | * |
kevman | 0:38ceb79fef03 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
kevman | 0:38ceb79fef03 | 9 | * |
kevman | 0:38ceb79fef03 | 10 | * Unless required by applicable law or agreed to in writing, software |
kevman | 0:38ceb79fef03 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
kevman | 0:38ceb79fef03 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
kevman | 0:38ceb79fef03 | 13 | * See the License for the specific language governing permissions and |
kevman | 0:38ceb79fef03 | 14 | * limitations under the License. |
kevman | 0:38ceb79fef03 | 15 | */ |
kevman | 0:38ceb79fef03 | 16 | #include "drivers/I2CSlave.h" |
kevman | 0:38ceb79fef03 | 17 | |
kevman | 0:38ceb79fef03 | 18 | #if DEVICE_I2CSLAVE |
kevman | 0:38ceb79fef03 | 19 | |
kevman | 0:38ceb79fef03 | 20 | namespace mbed { |
kevman | 0:38ceb79fef03 | 21 | |
kevman | 0:38ceb79fef03 | 22 | I2CSlave::I2CSlave(PinName sda, PinName scl) : _i2c() |
kevman | 0:38ceb79fef03 | 23 | { |
kevman | 0:38ceb79fef03 | 24 | i2c_init(&_i2c, sda, scl); |
kevman | 0:38ceb79fef03 | 25 | i2c_frequency(&_i2c, 100000); |
kevman | 0:38ceb79fef03 | 26 | i2c_slave_mode(&_i2c, 1); |
kevman | 0:38ceb79fef03 | 27 | } |
kevman | 0:38ceb79fef03 | 28 | |
kevman | 0:38ceb79fef03 | 29 | void I2CSlave::frequency(int hz) |
kevman | 0:38ceb79fef03 | 30 | { |
kevman | 0:38ceb79fef03 | 31 | i2c_frequency(&_i2c, hz); |
kevman | 0:38ceb79fef03 | 32 | } |
kevman | 0:38ceb79fef03 | 33 | |
kevman | 0:38ceb79fef03 | 34 | void I2CSlave::address(int address) |
kevman | 0:38ceb79fef03 | 35 | { |
kevman | 0:38ceb79fef03 | 36 | int addr = (address & 0xFF) | 1; |
kevman | 0:38ceb79fef03 | 37 | i2c_slave_address(&_i2c, 0, addr, 0); |
kevman | 0:38ceb79fef03 | 38 | } |
kevman | 0:38ceb79fef03 | 39 | |
kevman | 0:38ceb79fef03 | 40 | int I2CSlave::receive(void) |
kevman | 0:38ceb79fef03 | 41 | { |
kevman | 0:38ceb79fef03 | 42 | return i2c_slave_receive(&_i2c); |
kevman | 0:38ceb79fef03 | 43 | } |
kevman | 0:38ceb79fef03 | 44 | |
kevman | 0:38ceb79fef03 | 45 | int I2CSlave::read(char *data, int length) |
kevman | 0:38ceb79fef03 | 46 | { |
kevman | 0:38ceb79fef03 | 47 | return i2c_slave_read(&_i2c, data, length) != length; |
kevman | 0:38ceb79fef03 | 48 | } |
kevman | 0:38ceb79fef03 | 49 | |
kevman | 0:38ceb79fef03 | 50 | int I2CSlave::read(void) |
kevman | 0:38ceb79fef03 | 51 | { |
kevman | 0:38ceb79fef03 | 52 | return i2c_byte_read(&_i2c, 0); |
kevman | 0:38ceb79fef03 | 53 | } |
kevman | 0:38ceb79fef03 | 54 | |
kevman | 0:38ceb79fef03 | 55 | int I2CSlave::write(const char *data, int length) |
kevman | 0:38ceb79fef03 | 56 | { |
kevman | 0:38ceb79fef03 | 57 | return i2c_slave_write(&_i2c, data, length) != length; |
kevman | 0:38ceb79fef03 | 58 | } |
kevman | 0:38ceb79fef03 | 59 | |
kevman | 0:38ceb79fef03 | 60 | int I2CSlave::write(int data) |
kevman | 0:38ceb79fef03 | 61 | { |
kevman | 0:38ceb79fef03 | 62 | return i2c_byte_write(&_i2c, data); |
kevman | 0:38ceb79fef03 | 63 | } |
kevman | 0:38ceb79fef03 | 64 | |
kevman | 0:38ceb79fef03 | 65 | void I2CSlave::stop(void) |
kevman | 0:38ceb79fef03 | 66 | { |
kevman | 0:38ceb79fef03 | 67 | i2c_stop(&_i2c); |
kevman | 0:38ceb79fef03 | 68 | } |
kevman | 0:38ceb79fef03 | 69 | |
kevman | 0:38ceb79fef03 | 70 | } |
kevman | 0:38ceb79fef03 | 71 | |
kevman | 0:38ceb79fef03 | 72 | #endif |