Thomas Lyp / DevLibMemoryController

Initial commit

Dependencies:   FastPWM

mbed-dev-master/drivers/BusIn.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/BusIn.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 BusIn::BusIn(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 DigitalIn(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 BusIn::BusIn(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 DigitalIn(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 BusIn::~BusIn()
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 int BusIn::read()
lypinator 0:bb348c97df44 58 {
lypinator 0:bb348c97df44 59 int v = 0;
lypinator 0:bb348c97df44 60 lock();
lypinator 0:bb348c97df44 61 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 62 if (_pin[i] != 0) {
lypinator 0:bb348c97df44 63 v |= _pin[i]->read() << i;
lypinator 0:bb348c97df44 64 }
lypinator 0:bb348c97df44 65 }
lypinator 0:bb348c97df44 66 unlock();
lypinator 0:bb348c97df44 67 return v;
lypinator 0:bb348c97df44 68 }
lypinator 0:bb348c97df44 69
lypinator 0:bb348c97df44 70 void BusIn::mode(PinMode pull)
lypinator 0:bb348c97df44 71 {
lypinator 0:bb348c97df44 72 lock();
lypinator 0:bb348c97df44 73 for (int i = 0; i < 16; i++) {
lypinator 0:bb348c97df44 74 if (_pin[i] != 0) {
lypinator 0:bb348c97df44 75 _pin[i]->mode(pull);
lypinator 0:bb348c97df44 76 }
lypinator 0:bb348c97df44 77 }
lypinator 0:bb348c97df44 78 unlock();
lypinator 0:bb348c97df44 79 }
lypinator 0:bb348c97df44 80
lypinator 0:bb348c97df44 81 void BusIn::lock()
lypinator 0:bb348c97df44 82 {
lypinator 0:bb348c97df44 83 _mutex.lock();
lypinator 0:bb348c97df44 84 }
lypinator 0:bb348c97df44 85
lypinator 0:bb348c97df44 86 void BusIn::unlock()
lypinator 0:bb348c97df44 87 {
lypinator 0:bb348c97df44 88 _mutex.unlock();
lypinator 0:bb348c97df44 89 }
lypinator 0:bb348c97df44 90
lypinator 0:bb348c97df44 91 BusIn::operator int()
lypinator 0:bb348c97df44 92 {
lypinator 0:bb348c97df44 93 // Underlying read is thread safe
lypinator 0:bb348c97df44 94 return read();
lypinator 0:bb348c97df44 95 }
lypinator 0:bb348c97df44 96
lypinator 0:bb348c97df44 97 DigitalIn &BusIn::operator[](int index)
lypinator 0:bb348c97df44 98 {
lypinator 0:bb348c97df44 99 // No lock needed since _pin is not modified outside the constructor
lypinator 0:bb348c97df44 100 MBED_ASSERT(index >= 0 && index <= 16);
lypinator 0:bb348c97df44 101 MBED_ASSERT(_pin[index]);
lypinator 0:bb348c97df44 102 return *_pin[index];
lypinator 0:bb348c97df44 103 }
lypinator 0:bb348c97df44 104
lypinator 0:bb348c97df44 105 } // namespace mbed