Thomas Lyp / DevLibMemoryController

Initial commit

Dependencies:   FastPWM

mbed-dev-master/drivers/BusOut.cpp@0:bb348c97df44, 2020-09-16 (annotated)

Committer:
lypinator
Date:
Wed Sep 16 01:11:49 2020 +0000
Revision:
0:bb348c97df44
Added PWM

Who changed what in which revision?

UserRevisionLine numberNew contents of line
lypinator 0:bb348c97df44 1 /* mbed Microcontroller Library
lypinator 0:bb348c97df44 2 * Copyright (c) 2006-2013 ARM Limited
lypinator 0:bb348c97df44 3 *
lypinator 0:bb348c97df44 4 * Licensed under the Apache License, Version 2.0 (the "License");
lypinator 0:bb348c97df44 5 * you may not use this file except in compliance with the License.
lypinator 0:bb348c97df44 6 * You may obtain a copy of the License at
lypinator 0:bb348c97df44 7 *
lypinator 0:bb348c97df44 8 * http://www.apache.org/licenses/LICENSE-2.0
lypinator 0:bb348c97df44 9 *
lypinator 0:bb348c97df44 10 * Unless required by applicable law or agreed to in writing, software
lypinator 0:bb348c97df44 11 * distributed under the License is distributed on an "AS IS" BASIS,
lypinator 0:bb348c97df44 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
lypinator 0:bb348c97df44 13 * See the License for the specific language governing permissions and
lypinator 0:bb348c97df44 14 * limitations under the License.
lypinator 0:bb348c97df44 15 */
lypinator 0:bb348c97df44 16 #include "drivers/BusOut.h"
lypinator 0:bb348c97df44 17 #include "platform/mbed_assert.h"
lypinator 0:bb348c97df44 18
lypinator 0:bb348c97df44 19 namespace mbed {
lypinator 0:bb348c97df44 20
lypinator 0:bb348c97df44 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)
lypinator 0:bb348c97df44 22 {
lypinator 0:bb348c97df44 23 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
lypinator 0:bb348c97df44 24
lypinator 0:bb348c97df44 25 // No lock needed in the constructor
lypinator 0:bb348c97df44 26 _nc_mask = 0;
lypinator 0:bb348c97df44 27 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 28 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
lypinator 0:bb348c97df44 29 if (pins[i] != NC) {
lypinator 0:bb348c97df44 30 _nc_mask |= (1 << i);
lypinator 0:bb348c97df44 31 }
lypinator 0:bb348c97df44 32 }
lypinator 0:bb348c97df44 33 }
lypinator 0:bb348c97df44 34
lypinator 0:bb348c97df44 35 BusOut::BusOut(PinName pins[16])
lypinator 0:bb348c97df44 36 {
lypinator 0:bb348c97df44 37 // No lock needed in the constructor
lypinator 0:bb348c97df44 38 _nc_mask = 0;
lypinator 0:bb348c97df44 39 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 40 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
lypinator 0:bb348c97df44 41 if (pins[i] != NC) {
lypinator 0:bb348c97df44 42 _nc_mask |= (1 << i);
lypinator 0:bb348c97df44 43 }
lypinator 0:bb348c97df44 44 }
lypinator 0:bb348c97df44 45 }
lypinator 0:bb348c97df44 46
lypinator 0:bb348c97df44 47 BusOut::~BusOut()
lypinator 0:bb348c97df44 48 {
lypinator 0:bb348c97df44 49 // No lock needed in the destructor
lypinator 0:bb348c97df44 50 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 51 if (_pin[i] != 0) {
lypinator 0:bb348c97df44 52 delete _pin[i];
lypinator 0:bb348c97df44 53 }
lypinator 0:bb348c97df44 54 }
lypinator 0:bb348c97df44 55 }
lypinator 0:bb348c97df44 56
lypinator 0:bb348c97df44 57 void BusOut::write(int value)
lypinator 0:bb348c97df44 58 {
lypinator 0:bb348c97df44 59 lock();
lypinator 0:bb348c97df44 60 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 61 if (_pin[i] != 0) {
lypinator 0:bb348c97df44 62 _pin[i]->write((value >> i) & 1);
lypinator 0:bb348c97df44 63 }
lypinator 0:bb348c97df44 64 }
lypinator 0:bb348c97df44 65 unlock();
lypinator 0:bb348c97df44 66 }
lypinator 0:bb348c97df44 67
lypinator 0:bb348c97df44 68 int BusOut::read()
lypinator 0:bb348c97df44 69 {
lypinator 0:bb348c97df44 70 lock();
lypinator 0:bb348c97df44 71 int v = 0;
lypinator 0:bb348c97df44 72 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 73 if (_pin[i] != 0) {
lypinator 0:bb348c97df44 74 v |= _pin[i]->read() << i;
lypinator 0:bb348c97df44 75 }
lypinator 0:bb348c97df44 76 }
lypinator 0:bb348c97df44 77 unlock();
lypinator 0:bb348c97df44 78 return v;
lypinator 0:bb348c97df44 79 }
lypinator 0:bb348c97df44 80
lypinator 0:bb348c97df44 81 BusOut &BusOut::operator= (int v)
lypinator 0:bb348c97df44 82 {
lypinator 0:bb348c97df44 83 // Underlying write is thread safe
lypinator 0:bb348c97df44 84 write(v);
lypinator 0:bb348c97df44 85 return *this;
lypinator 0:bb348c97df44 86 }
lypinator 0:bb348c97df44 87
lypinator 0:bb348c97df44 88 BusOut &BusOut::operator= (BusOut &rhs)
lypinator 0:bb348c97df44 89 {
lypinator 0:bb348c97df44 90 // Underlying write is thread safe
lypinator 0:bb348c97df44 91 write(rhs.read());
lypinator 0:bb348c97df44 92 return *this;
lypinator 0:bb348c97df44 93 }
lypinator 0:bb348c97df44 94
lypinator 0:bb348c97df44 95 DigitalOut &BusOut::operator[](int index)
lypinator 0:bb348c97df44 96 {
lypinator 0:bb348c97df44 97 // No lock needed since _pin is not modified outside the constructor
lypinator 0:bb348c97df44 98 MBED_ASSERT(index >= 0 && index <= 16);
lypinator 0:bb348c97df44 99 MBED_ASSERT(_pin[index]);
lypinator 0:bb348c97df44 100 return *_pin[index];
lypinator 0:bb348c97df44 101 }
lypinator 0:bb348c97df44 102
lypinator 0:bb348c97df44 103 BusOut::operator int()
lypinator 0:bb348c97df44 104 {
lypinator 0:bb348c97df44 105 // Underlying read is thread safe
lypinator 0:bb348c97df44 106 return read();
lypinator 0:bb348c97df44 107 }
lypinator 0:bb348c97df44 108
lypinator 0:bb348c97df44 109 void BusOut::lock()
lypinator 0:bb348c97df44 110 {
lypinator 0:bb348c97df44 111 _mutex.lock();
lypinator 0:bb348c97df44 112 }
lypinator 0:bb348c97df44 113
lypinator 0:bb348c97df44 114 void BusOut::unlock()
lypinator 0:bb348c97df44 115 {
lypinator 0:bb348c97df44 116 _mutex.unlock();
lypinator 0:bb348c97df44 117 }
lypinator 0:bb348c97df44 118
lypinator 0:bb348c97df44 119 } // namespace mbed