Ermanno Brusadin / mbed-src

mbed library sources

common/BusOut.cpp@0:0a673c671a56, 2016-07-27 (annotated)

Committer:
ebrus
Date:
Wed Jul 27 18:35:32 2016 +0000
Revision:
0:0a673c671a56
4

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ebrus 0:0a673c671a56 1 /* mbed Microcontroller Library
ebrus 0:0a673c671a56 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:0a673c671a56 3 *
ebrus 0:0a673c671a56 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:0a673c671a56 5 * you may not use this file except in compliance with the License.
ebrus 0:0a673c671a56 6 * You may obtain a copy of the License at
ebrus 0:0a673c671a56 7 *
ebrus 0:0a673c671a56 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:0a673c671a56 9 *
ebrus 0:0a673c671a56 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:0a673c671a56 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:0a673c671a56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:0a673c671a56 13 * See the License for the specific language governing permissions and
ebrus 0:0a673c671a56 14 * limitations under the License.
ebrus 0:0a673c671a56 15 */
ebrus 0:0a673c671a56 16 #include "BusOut.h"
ebrus 0:0a673c671a56 17
ebrus 0:0a673c671a56 18 namespace mbed {
ebrus 0:0a673c671a56 19
ebrus 0:0a673c671a56 20 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) {
ebrus 0:0a673c671a56 21 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
ebrus 0:0a673c671a56 22
ebrus 0:0a673c671a56 23 for (int i=0; i<16; i++) {
ebrus 0:0a673c671a56 24 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
ebrus 0:0a673c671a56 25 }
ebrus 0:0a673c671a56 26 }
ebrus 0:0a673c671a56 27
ebrus 0:0a673c671a56 28 BusOut::BusOut(PinName pins[16]) {
ebrus 0:0a673c671a56 29 for (int i=0; i<16; i++) {
ebrus 0:0a673c671a56 30 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
ebrus 0:0a673c671a56 31 }
ebrus 0:0a673c671a56 32 }
ebrus 0:0a673c671a56 33
ebrus 0:0a673c671a56 34 BusOut::~BusOut() {
ebrus 0:0a673c671a56 35 for (int i=0; i<16; i++) {
ebrus 0:0a673c671a56 36 if (_pin[i] != 0) {
ebrus 0:0a673c671a56 37 delete _pin[i];
ebrus 0:0a673c671a56 38 }
ebrus 0:0a673c671a56 39 }
ebrus 0:0a673c671a56 40 }
ebrus 0:0a673c671a56 41
ebrus 0:0a673c671a56 42 void BusOut::write(int value) {
ebrus 0:0a673c671a56 43 for (int i=0; i<16; i++) {
ebrus 0:0a673c671a56 44 if (_pin[i] != 0) {
ebrus 0:0a673c671a56 45 _pin[i]->write((value >> i) & 1);
ebrus 0:0a673c671a56 46 }
ebrus 0:0a673c671a56 47 }
ebrus 0:0a673c671a56 48 }
ebrus 0:0a673c671a56 49
ebrus 0:0a673c671a56 50 int BusOut::read() {
ebrus 0:0a673c671a56 51 int v = 0;
ebrus 0:0a673c671a56 52 for (int i=0; i<16; i++) {
ebrus 0:0a673c671a56 53 if (_pin[i] != 0) {
ebrus 0:0a673c671a56 54 v |= _pin[i]->read() << i;
ebrus 0:0a673c671a56 55 }
ebrus 0:0a673c671a56 56 }
ebrus 0:0a673c671a56 57 return v;
ebrus 0:0a673c671a56 58 }
ebrus 0:0a673c671a56 59
ebrus 0:0a673c671a56 60 #ifdef MBED_OPERATORS
ebrus 0:0a673c671a56 61 BusOut& BusOut::operator= (int v) {
ebrus 0:0a673c671a56 62 write(v);
ebrus 0:0a673c671a56 63 return *this;
ebrus 0:0a673c671a56 64 }
ebrus 0:0a673c671a56 65
ebrus 0:0a673c671a56 66 BusOut& BusOut::operator= (BusOut& rhs) {
ebrus 0:0a673c671a56 67 write(rhs.read());
ebrus 0:0a673c671a56 68 return *this;
ebrus 0:0a673c671a56 69 }
ebrus 0:0a673c671a56 70
ebrus 0:0a673c671a56 71 BusOut::operator int() {
ebrus 0:0a673c671a56 72 return read();
ebrus 0:0a673c671a56 73 }
ebrus 0:0a673c671a56 74 #endif
ebrus 0:0a673c671a56 75
ebrus 0:0a673c671a56 76 } // namespace mbed