Sergey Solodunov / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

common/BusOut.cpp@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

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 "BusOut.h"
bogdanm 0:9b334a45a8ff 17 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 namespace mbed {
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 BusOut::BusOut(PinName p0, PinName p1, PinName p2, PinName p3, PinName p4, PinName p5, PinName p6, PinName p7, PinName p8, PinName p9, PinName p10, PinName p11, PinName p12, PinName p13, PinName p14, PinName p15) {
bogdanm 0:9b334a45a8ff 22 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 _nc_mask = 0;
bogdanm 0:9b334a45a8ff 25 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 26 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
bogdanm 0:9b334a45a8ff 27 if (pins[i] != NC) {
bogdanm 0:9b334a45a8ff 28 _nc_mask |= (1 << i);
bogdanm 0:9b334a45a8ff 29 }
bogdanm 0:9b334a45a8ff 30 }
bogdanm 0:9b334a45a8ff 31 }
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 BusOut::BusOut(PinName pins[16]) {
bogdanm 0:9b334a45a8ff 34 _nc_mask = 0;
bogdanm 0:9b334a45a8ff 35 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 36 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
bogdanm 0:9b334a45a8ff 37 if (pins[i] != NC) {
bogdanm 0:9b334a45a8ff 38 _nc_mask |= (1 << i);
bogdanm 0:9b334a45a8ff 39 }
bogdanm 0:9b334a45a8ff 40 }
bogdanm 0:9b334a45a8ff 41 }
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 BusOut::~BusOut() {
bogdanm 0:9b334a45a8ff 44 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 45 if (_pin[i] != 0) {
bogdanm 0:9b334a45a8ff 46 delete _pin[i];
bogdanm 0:9b334a45a8ff 47 }
bogdanm 0:9b334a45a8ff 48 }
bogdanm 0:9b334a45a8ff 49 }
bogdanm 0:9b334a45a8ff 50
bogdanm 0:9b334a45a8ff 51 void BusOut::write(int value) {
bogdanm 0:9b334a45a8ff 52 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 53 if (_pin[i] != 0) {
bogdanm 0:9b334a45a8ff 54 _pin[i]->write((value >> i) & 1);
bogdanm 0:9b334a45a8ff 55 }
bogdanm 0:9b334a45a8ff 56 }
bogdanm 0:9b334a45a8ff 57 }
bogdanm 0:9b334a45a8ff 58
bogdanm 0:9b334a45a8ff 59 int BusOut::read() {
bogdanm 0:9b334a45a8ff 60 int v = 0;
bogdanm 0:9b334a45a8ff 61 for (int i=0; i<16; i++) {
bogdanm 0:9b334a45a8ff 62 if (_pin[i] != 0) {
bogdanm 0:9b334a45a8ff 63 v |= _pin[i]->read() << i;
bogdanm 0:9b334a45a8ff 64 }
bogdanm 0:9b334a45a8ff 65 }
bogdanm 0:9b334a45a8ff 66 return v;
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 #ifdef MBED_OPERATORS
bogdanm 0:9b334a45a8ff 70 BusOut& BusOut::operator= (int v) {
bogdanm 0:9b334a45a8ff 71 write(v);
bogdanm 0:9b334a45a8ff 72 return *this;
bogdanm 0:9b334a45a8ff 73 }
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 BusOut& BusOut::operator= (BusOut& rhs) {
bogdanm 0:9b334a45a8ff 76 write(rhs.read());
bogdanm 0:9b334a45a8ff 77 return *this;
bogdanm 0:9b334a45a8ff 78 }
bogdanm 0:9b334a45a8ff 79
bogdanm 0:9b334a45a8ff 80 DigitalOut& BusOut::operator[] (int index) {
bogdanm 0:9b334a45a8ff 81 MBED_ASSERT(index >= 0 && index <= 16);
bogdanm 0:9b334a45a8ff 82 MBED_ASSERT(_pin[index]);
bogdanm 0:9b334a45a8ff 83 return *_pin[index];
bogdanm 0:9b334a45a8ff 84 }
bogdanm 0:9b334a45a8ff 85
bogdanm 0:9b334a45a8ff 86 BusOut::operator int() {
bogdanm 0:9b334a45a8ff 87 return read();
bogdanm 0:9b334a45a8ff 88 }
bogdanm 0:9b334a45a8ff 89 #endif
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 } // namespace mbed