Lancaster University / mbed-src

Lancaster University's (short term!) clone of mbed-src for micro:bit. This is a copy of the github branch https://github.com/lancaster-university/mbed-classic

Fork of mbed-src by mbed official

cpp/BusOut.cpp@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #include "BusOut.h"
mbed_official 0:fd0d7bdfcdc2 23
mbed_official 0:fd0d7bdfcdc2 24 namespace mbed {
mbed_official 0:fd0d7bdfcdc2 25
mbed_official 0:fd0d7bdfcdc2 26 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) {
mbed_official 0:fd0d7bdfcdc2 27 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
mbed_official 0:fd0d7bdfcdc2 28
mbed_official 0:fd0d7bdfcdc2 29 for (int i=0; i<16; i++) {
mbed_official 0:fd0d7bdfcdc2 30 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
mbed_official 0:fd0d7bdfcdc2 31 }
mbed_official 0:fd0d7bdfcdc2 32 }
mbed_official 0:fd0d7bdfcdc2 33
mbed_official 0:fd0d7bdfcdc2 34 BusOut::BusOut(PinName pins[16]) {
mbed_official 0:fd0d7bdfcdc2 35 for (int i=0; i<16; i++) {
mbed_official 0:fd0d7bdfcdc2 36 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
mbed_official 0:fd0d7bdfcdc2 37 }
mbed_official 0:fd0d7bdfcdc2 38 }
mbed_official 0:fd0d7bdfcdc2 39
mbed_official 0:fd0d7bdfcdc2 40 BusOut::~BusOut() {
mbed_official 0:fd0d7bdfcdc2 41 for (int i=0; i<16; i++) {
mbed_official 0:fd0d7bdfcdc2 42 if (_pin[i] != 0) {
mbed_official 0:fd0d7bdfcdc2 43 delete _pin[i];
mbed_official 0:fd0d7bdfcdc2 44 }
mbed_official 0:fd0d7bdfcdc2 45 }
mbed_official 0:fd0d7bdfcdc2 46 }
mbed_official 0:fd0d7bdfcdc2 47
mbed_official 0:fd0d7bdfcdc2 48 void BusOut::write(int value) {
mbed_official 0:fd0d7bdfcdc2 49 for (int i=0; i<16; i++) {
mbed_official 0:fd0d7bdfcdc2 50 if (_pin[i] != 0) {
mbed_official 0:fd0d7bdfcdc2 51 _pin[i]->write((value >> i) & 1);
mbed_official 0:fd0d7bdfcdc2 52 }
mbed_official 0:fd0d7bdfcdc2 53 }
mbed_official 0:fd0d7bdfcdc2 54 }
mbed_official 0:fd0d7bdfcdc2 55
mbed_official 0:fd0d7bdfcdc2 56 int BusOut::read() {
mbed_official 0:fd0d7bdfcdc2 57 int v = 0;
mbed_official 0:fd0d7bdfcdc2 58 for (int i=0; i<16; i++) {
mbed_official 0:fd0d7bdfcdc2 59 if (_pin[i] != 0) {
mbed_official 0:fd0d7bdfcdc2 60 v |= _pin[i]->read() << i;
mbed_official 0:fd0d7bdfcdc2 61 }
mbed_official 0:fd0d7bdfcdc2 62 }
mbed_official 0:fd0d7bdfcdc2 63 return v;
mbed_official 0:fd0d7bdfcdc2 64 }
mbed_official 0:fd0d7bdfcdc2 65
mbed_official 0:fd0d7bdfcdc2 66 #ifdef MBED_OPERATORS
mbed_official 0:fd0d7bdfcdc2 67 BusOut& BusOut::operator= (int v) {
mbed_official 0:fd0d7bdfcdc2 68 write(v);
mbed_official 0:fd0d7bdfcdc2 69 return *this;
mbed_official 0:fd0d7bdfcdc2 70 }
mbed_official 0:fd0d7bdfcdc2 71
mbed_official 0:fd0d7bdfcdc2 72 BusOut& BusOut::operator= (BusOut& rhs) {
mbed_official 0:fd0d7bdfcdc2 73 write(rhs.read());
mbed_official 0:fd0d7bdfcdc2 74 return *this;
mbed_official 0:fd0d7bdfcdc2 75 }
mbed_official 0:fd0d7bdfcdc2 76
mbed_official 0:fd0d7bdfcdc2 77 BusOut::operator int() {
mbed_official 0:fd0d7bdfcdc2 78 return read();
mbed_official 0:fd0d7bdfcdc2 79 }
mbed_official 0:fd0d7bdfcdc2 80 #endif
mbed_official 0:fd0d7bdfcdc2 81
mbed_official 0:fd0d7bdfcdc2 82 } // namespace mbed