Junichi Katsu / Mbed 2 deprecated BLE_MPU6050_test6_challenge_sb

テスト用です。

Dependencies:   mbed

MPU6050_wallbotble/myi2c/myi2c.cpp@0:8468a4403fea, 2016-10-11 (annotated)

Committer:
jksoft
Date:
Tue Oct 11 11:09:42 2016 +0000
Revision:
0:8468a4403fea
SB??ver;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jksoft 0:8468a4403fea 1 /* mbed Microcontroller Library
jksoft 0:8468a4403fea 2 * Copyright (c) 2006-2013 ARM Limited
jksoft 0:8468a4403fea 3 *
jksoft 0:8468a4403fea 4 * Licensed under the Apache License, Version 2.0 (the "License");
jksoft 0:8468a4403fea 5 * you may not use this file except in compliance with the License.
jksoft 0:8468a4403fea 6 * You may obtain a copy of the License at
jksoft 0:8468a4403fea 7 *
jksoft 0:8468a4403fea 8 * http://www.apache.org/licenses/LICENSE-2.0
jksoft 0:8468a4403fea 9 *
jksoft 0:8468a4403fea 10 * Unless required by applicable law or agreed to in writing, software
jksoft 0:8468a4403fea 11 * distributed under the License is distributed on an "AS IS" BASIS,
jksoft 0:8468a4403fea 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
jksoft 0:8468a4403fea 13 * See the License for the specific language governing permissions and
jksoft 0:8468a4403fea 14 * limitations under the License.
jksoft 0:8468a4403fea 15 */
jksoft 0:8468a4403fea 16 #include <stdio.h>
jksoft 0:8468a4403fea 17 #include "myi2c.h"
jksoft 0:8468a4403fea 18
jksoft 0:8468a4403fea 19 //#if DEVICE_I2C
jksoft 0:8468a4403fea 20
jksoft 0:8468a4403fea 21 namespace mbed {
jksoft 0:8468a4403fea 22
jksoft 0:8468a4403fea 23 myI2C *myI2C::_owner = NULL;
jksoft 0:8468a4403fea 24
jksoft 0:8468a4403fea 25 myI2C::myI2C(PinName sda, PinName scl) : _i2c(), _hz(100000) {
jksoft 0:8468a4403fea 26 // The init function also set the frequency to 100000
jksoft 0:8468a4403fea 27 i2c_init(&_i2c, sda, scl);
jksoft 0:8468a4403fea 28
jksoft 0:8468a4403fea 29 // Used to avoid unnecessary frequency updates
jksoft 0:8468a4403fea 30 _owner = this;
jksoft 0:8468a4403fea 31 }
jksoft 0:8468a4403fea 32
jksoft 0:8468a4403fea 33 void myI2C::frequency(int hz) {
jksoft 0:8468a4403fea 34 _hz = hz;
jksoft 0:8468a4403fea 35
jksoft 0:8468a4403fea 36 // We want to update the frequency even if we are already the bus owners
jksoft 0:8468a4403fea 37 i2c_frequency(&_i2c, _hz);
jksoft 0:8468a4403fea 38
jksoft 0:8468a4403fea 39 // Updating the frequency of the bus we become the owners of it
jksoft 0:8468a4403fea 40 _owner = this;
jksoft 0:8468a4403fea 41 }
jksoft 0:8468a4403fea 42
jksoft 0:8468a4403fea 43 void myI2C::aquire() {
jksoft 0:8468a4403fea 44 if (_owner != this) {
jksoft 0:8468a4403fea 45 i2c_frequency(&_i2c, _hz);
jksoft 0:8468a4403fea 46 _owner = this;
jksoft 0:8468a4403fea 47 }
jksoft 0:8468a4403fea 48 }
jksoft 0:8468a4403fea 49
jksoft 0:8468a4403fea 50 // write - Master Transmitter Mode
jksoft 0:8468a4403fea 51 int myI2C::write(int address, const char* data, int length, bool repeated) {
jksoft 0:8468a4403fea 52 aquire();
jksoft 0:8468a4403fea 53
jksoft 0:8468a4403fea 54 int stop = (repeated) ? 0 : 1;
jksoft 0:8468a4403fea 55 int written = i2c_write(&_i2c, address, data, length, stop);
jksoft 0:8468a4403fea 56
jksoft 0:8468a4403fea 57 return length != written;
jksoft 0:8468a4403fea 58 }
jksoft 0:8468a4403fea 59
jksoft 0:8468a4403fea 60 int myI2C::write(int data) {
jksoft 0:8468a4403fea 61 return i2c_byte_write(&_i2c, data);
jksoft 0:8468a4403fea 62 }
jksoft 0:8468a4403fea 63
jksoft 0:8468a4403fea 64 // read - Master Reciever Mode
jksoft 0:8468a4403fea 65 int myI2C::read(int address, char* data, int length, bool repeated) {
jksoft 0:8468a4403fea 66 aquire();
jksoft 0:8468a4403fea 67
jksoft 0:8468a4403fea 68 int stop = (repeated) ? 0 : 1;
jksoft 0:8468a4403fea 69 int read = i2c_read(&_i2c, address, data, length, stop);
jksoft 0:8468a4403fea 70
jksoft 0:8468a4403fea 71 return length != read;
jksoft 0:8468a4403fea 72 }
jksoft 0:8468a4403fea 73
jksoft 0:8468a4403fea 74 int myI2C::read(int ack) {
jksoft 0:8468a4403fea 75 if (ack) {
jksoft 0:8468a4403fea 76 return i2c_byte_read(&_i2c, 0);
jksoft 0:8468a4403fea 77 } else {
jksoft 0:8468a4403fea 78 return i2c_byte_read(&_i2c, 1);
jksoft 0:8468a4403fea 79 }
jksoft 0:8468a4403fea 80 }
jksoft 0:8468a4403fea 81
jksoft 0:8468a4403fea 82 void myI2C::start(void) {
jksoft 0:8468a4403fea 83 i2c_start(&_i2c);
jksoft 0:8468a4403fea 84 }
jksoft 0:8468a4403fea 85
jksoft 0:8468a4403fea 86 void myI2C::stop(void) {
jksoft 0:8468a4403fea 87 i2c_stop(&_i2c);
jksoft 0:8468a4403fea 88 }
jksoft 0:8468a4403fea 89
jksoft 0:8468a4403fea 90 } // namespace mbed
jksoft 0:8468a4403fea 91
jksoft 0:8468a4403fea 92 //#endif