Andrew SaLoutos / mbed-dev-STM-lean

From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.

Dependents:   motor_driver motor_driver_screaming_fix

drivers/BusIn.cpp@0:083111ae2a11, 2020-11-26 (annotated)

Committer:
saloutos
Date:
Thu Nov 26 04:08:56 2020 +0000
Revision:
0:083111ae2a11
first commit of leaned mbed dev lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
saloutos 0:083111ae2a11 1 /* mbed Microcontroller Library
saloutos 0:083111ae2a11 2 * Copyright (c) 2006-2013 ARM Limited
saloutos 0:083111ae2a11 3 *
saloutos 0:083111ae2a11 4 * Licensed under the Apache License, Version 2.0 (the "License");
saloutos 0:083111ae2a11 5 * you may not use this file except in compliance with the License.
saloutos 0:083111ae2a11 6 * You may obtain a copy of the License at
saloutos 0:083111ae2a11 7 *
saloutos 0:083111ae2a11 8 * http://www.apache.org/licenses/LICENSE-2.0
saloutos 0:083111ae2a11 9 *
saloutos 0:083111ae2a11 10 * Unless required by applicable law or agreed to in writing, software
saloutos 0:083111ae2a11 11 * distributed under the License is distributed on an "AS IS" BASIS,
saloutos 0:083111ae2a11 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
saloutos 0:083111ae2a11 13 * See the License for the specific language governing permissions and
saloutos 0:083111ae2a11 14 * limitations under the License.
saloutos 0:083111ae2a11 15 */
saloutos 0:083111ae2a11 16 #include "drivers/BusIn.h"
saloutos 0:083111ae2a11 17 #include "platform/mbed_assert.h"
saloutos 0:083111ae2a11 18
saloutos 0:083111ae2a11 19 namespace mbed {
saloutos 0:083111ae2a11 20
saloutos 0:083111ae2a11 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) {
saloutos 0:083111ae2a11 22 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
saloutos 0:083111ae2a11 23
saloutos 0:083111ae2a11 24 // No lock needed in the constructor
saloutos 0:083111ae2a11 25 _nc_mask = 0;
saloutos 0:083111ae2a11 26 for (int i=0; i<16; i++) {
saloutos 0:083111ae2a11 27 _pin[i] = (pins[i] != NC) ? new DigitalIn(pins[i]) : 0;
saloutos 0:083111ae2a11 28 if (pins[i] != NC) {
saloutos 0:083111ae2a11 29 _nc_mask |= (1 << i);
saloutos 0:083111ae2a11 30 }
saloutos 0:083111ae2a11 31 }
saloutos 0:083111ae2a11 32 }
saloutos 0:083111ae2a11 33
saloutos 0:083111ae2a11 34 BusIn::BusIn(PinName pins[16]) {
saloutos 0:083111ae2a11 35 // No lock needed in the constructor
saloutos 0:083111ae2a11 36 _nc_mask = 0;
saloutos 0:083111ae2a11 37 for (int i=0; i<16; i++) {
saloutos 0:083111ae2a11 38 _pin[i] = (pins[i] != NC) ? new DigitalIn(pins[i]) : 0;
saloutos 0:083111ae2a11 39 if (pins[i] != NC) {
saloutos 0:083111ae2a11 40 _nc_mask |= (1 << i);
saloutos 0:083111ae2a11 41 }
saloutos 0:083111ae2a11 42 }
saloutos 0:083111ae2a11 43 }
saloutos 0:083111ae2a11 44
saloutos 0:083111ae2a11 45 BusIn::~BusIn() {
saloutos 0:083111ae2a11 46 // No lock needed in the destructor
saloutos 0:083111ae2a11 47 for (int i=0; i<16; i++) {
saloutos 0:083111ae2a11 48 if (_pin[i] != 0) {
saloutos 0:083111ae2a11 49 delete _pin[i];
saloutos 0:083111ae2a11 50 }
saloutos 0:083111ae2a11 51 }
saloutos 0:083111ae2a11 52 }
saloutos 0:083111ae2a11 53
saloutos 0:083111ae2a11 54 int BusIn::read() {
saloutos 0:083111ae2a11 55 int v = 0;
saloutos 0:083111ae2a11 56 lock();
saloutos 0:083111ae2a11 57 for (int i=0; i<16; i++) {
saloutos 0:083111ae2a11 58 if (_pin[i] != 0) {
saloutos 0:083111ae2a11 59 v |= _pin[i]->read() << i;
saloutos 0:083111ae2a11 60 }
saloutos 0:083111ae2a11 61 }
saloutos 0:083111ae2a11 62 unlock();
saloutos 0:083111ae2a11 63 return v;
saloutos 0:083111ae2a11 64 }
saloutos 0:083111ae2a11 65
saloutos 0:083111ae2a11 66 void BusIn::mode(PinMode pull) {
saloutos 0:083111ae2a11 67 lock();
saloutos 0:083111ae2a11 68 for (int i=0; i<16; i++) {
saloutos 0:083111ae2a11 69 if (_pin[i] != 0) {
saloutos 0:083111ae2a11 70 _pin[i]->mode(pull);
saloutos 0:083111ae2a11 71 }
saloutos 0:083111ae2a11 72 }
saloutos 0:083111ae2a11 73 unlock();
saloutos 0:083111ae2a11 74 }
saloutos 0:083111ae2a11 75
saloutos 0:083111ae2a11 76 void BusIn::lock() {
saloutos 0:083111ae2a11 77 _mutex.lock();
saloutos 0:083111ae2a11 78 }
saloutos 0:083111ae2a11 79
saloutos 0:083111ae2a11 80 void BusIn::unlock() {
saloutos 0:083111ae2a11 81 _mutex.unlock();
saloutos 0:083111ae2a11 82 }
saloutos 0:083111ae2a11 83
saloutos 0:083111ae2a11 84 BusIn::operator int() {
saloutos 0:083111ae2a11 85 // Underlying read is thread safe
saloutos 0:083111ae2a11 86 return read();
saloutos 0:083111ae2a11 87 }
saloutos 0:083111ae2a11 88
saloutos 0:083111ae2a11 89 DigitalIn& BusIn::operator[] (int index) {
saloutos 0:083111ae2a11 90 // No lock needed since _pin is not modified outside the constructor
saloutos 0:083111ae2a11 91 MBED_ASSERT(index >= 0 && index <= 16);
saloutos 0:083111ae2a11 92 MBED_ASSERT(_pin[index]);
saloutos 0:083111ae2a11 93 return *_pin[index];
saloutos 0:083111ae2a11 94 }
saloutos 0:083111ae2a11 95
saloutos 0:083111ae2a11 96 } // namespace mbed