Damian Gabino / picoGW_mcu

MCU driver/HAL for the Picocell Gateway concentrator board. The firmware implements either a USB CDC protocol or a UART protocol to bridge commands coming from host to the SX1308 SPI interface.

src/mbed-dev/common/BusOut.cpp@0:c76361bd82e8, 2018-04-11 (annotated)

Committer:
dgabino
Date:
Wed Apr 11 14:42:47 2018 +0000
Revision:
0:c76361bd82e8
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dgabino 0:c76361bd82e8 1 /* mbed Microcontroller Library
dgabino 0:c76361bd82e8 2 * Copyright (c) 2006-2013 ARM Limited
dgabino 0:c76361bd82e8 3 *
dgabino 0:c76361bd82e8 4 * Licensed under the Apache License, Version 2.0 (the "License");
dgabino 0:c76361bd82e8 5 * you may not use this file except in compliance with the License.
dgabino 0:c76361bd82e8 6 * You may obtain a copy of the License at
dgabino 0:c76361bd82e8 7 *
dgabino 0:c76361bd82e8 8 * http://www.apache.org/licenses/LICENSE-2.0
dgabino 0:c76361bd82e8 9 *
dgabino 0:c76361bd82e8 10 * Unless required by applicable law or agreed to in writing, software
dgabino 0:c76361bd82e8 11 * distributed under the License is distributed on an "AS IS" BASIS,
dgabino 0:c76361bd82e8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
dgabino 0:c76361bd82e8 13 * See the License for the specific language governing permissions and
dgabino 0:c76361bd82e8 14 * limitations under the License.
dgabino 0:c76361bd82e8 15 */
dgabino 0:c76361bd82e8 16 #include "BusOut.h"
dgabino 0:c76361bd82e8 17 #include "mbed_assert.h"
dgabino 0:c76361bd82e8 18
dgabino 0:c76361bd82e8 19 namespace mbed {
dgabino 0:c76361bd82e8 20
dgabino 0:c76361bd82e8 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) {
dgabino 0:c76361bd82e8 22 PinName pins[16] = {p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15};
dgabino 0:c76361bd82e8 23
dgabino 0:c76361bd82e8 24 // No lock needed in the constructor
dgabino 0:c76361bd82e8 25 _nc_mask = 0;
dgabino 0:c76361bd82e8 26 for (int i=0; i<16; i++) {
dgabino 0:c76361bd82e8 27 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
dgabino 0:c76361bd82e8 28 if (pins[i] != NC) {
dgabino 0:c76361bd82e8 29 _nc_mask |= (1 << i);
dgabino 0:c76361bd82e8 30 }
dgabino 0:c76361bd82e8 31 }
dgabino 0:c76361bd82e8 32 }
dgabino 0:c76361bd82e8 33
dgabino 0:c76361bd82e8 34 BusOut::BusOut(PinName pins[16]) {
dgabino 0:c76361bd82e8 35 // No lock needed in the constructor
dgabino 0:c76361bd82e8 36 _nc_mask = 0;
dgabino 0:c76361bd82e8 37 for (int i=0; i<16; i++) {
dgabino 0:c76361bd82e8 38 _pin[i] = (pins[i] != NC) ? new DigitalOut(pins[i]) : 0;
dgabino 0:c76361bd82e8 39 if (pins[i] != NC) {
dgabino 0:c76361bd82e8 40 _nc_mask |= (1 << i);
dgabino 0:c76361bd82e8 41 }
dgabino 0:c76361bd82e8 42 }
dgabino 0:c76361bd82e8 43 }
dgabino 0:c76361bd82e8 44
dgabino 0:c76361bd82e8 45 BusOut::~BusOut() {
dgabino 0:c76361bd82e8 46 // No lock needed in the destructor
dgabino 0:c76361bd82e8 47 for (int i=0; i<16; i++) {
dgabino 0:c76361bd82e8 48 if (_pin[i] != 0) {
dgabino 0:c76361bd82e8 49 delete _pin[i];
dgabino 0:c76361bd82e8 50 }
dgabino 0:c76361bd82e8 51 }
dgabino 0:c76361bd82e8 52 }
dgabino 0:c76361bd82e8 53
dgabino 0:c76361bd82e8 54 void BusOut::write(int value) {
dgabino 0:c76361bd82e8 55 lock();
dgabino 0:c76361bd82e8 56 for (int i=0; i<16; i++) {
dgabino 0:c76361bd82e8 57 if (_pin[i] != 0) {
dgabino 0:c76361bd82e8 58 _pin[i]->write((value >> i) & 1);
dgabino 0:c76361bd82e8 59 }
dgabino 0:c76361bd82e8 60 }
dgabino 0:c76361bd82e8 61 unlock();
dgabino 0:c76361bd82e8 62 }
dgabino 0:c76361bd82e8 63
dgabino 0:c76361bd82e8 64 int BusOut::read() {
dgabino 0:c76361bd82e8 65 lock();
dgabino 0:c76361bd82e8 66 int v = 0;
dgabino 0:c76361bd82e8 67 for (int i=0; i<16; i++) {
dgabino 0:c76361bd82e8 68 if (_pin[i] != 0) {
dgabino 0:c76361bd82e8 69 v |= _pin[i]->read() << i;
dgabino 0:c76361bd82e8 70 }
dgabino 0:c76361bd82e8 71 }
dgabino 0:c76361bd82e8 72 unlock();
dgabino 0:c76361bd82e8 73 return v;
dgabino 0:c76361bd82e8 74 }
dgabino 0:c76361bd82e8 75
dgabino 0:c76361bd82e8 76 BusOut& BusOut::operator= (int v) {
dgabino 0:c76361bd82e8 77 // Underlying write is thread safe
dgabino 0:c76361bd82e8 78 write(v);
dgabino 0:c76361bd82e8 79 return *this;
dgabino 0:c76361bd82e8 80 }
dgabino 0:c76361bd82e8 81
dgabino 0:c76361bd82e8 82 BusOut& BusOut::operator= (BusOut& rhs) {
dgabino 0:c76361bd82e8 83 // Underlying write is thread safe
dgabino 0:c76361bd82e8 84 write(rhs.read());
dgabino 0:c76361bd82e8 85 return *this;
dgabino 0:c76361bd82e8 86 }
dgabino 0:c76361bd82e8 87
dgabino 0:c76361bd82e8 88 DigitalOut& BusOut::operator[] (int index) {
dgabino 0:c76361bd82e8 89 // No lock needed since _pin is not modified outside the constructor
dgabino 0:c76361bd82e8 90 MBED_ASSERT(index >= 0 && index <= 16);
dgabino 0:c76361bd82e8 91 MBED_ASSERT(_pin[index]);
dgabino 0:c76361bd82e8 92 return *_pin[index];
dgabino 0:c76361bd82e8 93 }
dgabino 0:c76361bd82e8 94
dgabino 0:c76361bd82e8 95 BusOut::operator int() {
dgabino 0:c76361bd82e8 96 // Underlying read is thread safe
dgabino 0:c76361bd82e8 97 return read();
dgabino 0:c76361bd82e8 98 }
dgabino 0:c76361bd82e8 99
dgabino 0:c76361bd82e8 100 void BusOut::lock() {
dgabino 0:c76361bd82e8 101 _mutex.lock();
dgabino 0:c76361bd82e8 102 }
dgabino 0:c76361bd82e8 103
dgabino 0:c76361bd82e8 104 void BusOut::unlock() {
dgabino 0:c76361bd82e8 105 _mutex.unlock();
dgabino 0:c76361bd82e8 106 }
dgabino 0:c76361bd82e8 107
dgabino 0:c76361bd82e8 108 } // namespace mbed