PES4 / Mbed OS Queue_02

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mbed-os/drivers/BusOut.h@0:6bf0743ece18, 2020-03-28 (annotated)

Committer:
demayer
Date:
Sat Mar 28 15:28:19 2020 +0000
Revision:
0:6bf0743ece18
IMU Thread with an event-queue running parallel to handle tasks like a 5 times blinking LED. Button with interrupt detected.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
demayer 0:6bf0743ece18 1 /* mbed Microcontroller Library
demayer 0:6bf0743ece18 2 * Copyright (c) 2006-2013 ARM Limited
demayer 0:6bf0743ece18 3 *
demayer 0:6bf0743ece18 4 * Licensed under the Apache License, Version 2.0 (the "License");
demayer 0:6bf0743ece18 5 * you may not use this file except in compliance with the License.
demayer 0:6bf0743ece18 6 * You may obtain a copy of the License at
demayer 0:6bf0743ece18 7 *
demayer 0:6bf0743ece18 8 * http://www.apache.org/licenses/LICENSE-2.0
demayer 0:6bf0743ece18 9 *
demayer 0:6bf0743ece18 10 * Unless required by applicable law or agreed to in writing, software
demayer 0:6bf0743ece18 11 * distributed under the License is distributed on an "AS IS" BASIS,
demayer 0:6bf0743ece18 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
demayer 0:6bf0743ece18 13 * See the License for the specific language governing permissions and
demayer 0:6bf0743ece18 14 * limitations under the License.
demayer 0:6bf0743ece18 15 */
demayer 0:6bf0743ece18 16 #ifndef MBED_BUSOUT_H
demayer 0:6bf0743ece18 17 #define MBED_BUSOUT_H
demayer 0:6bf0743ece18 18
demayer 0:6bf0743ece18 19 #include "drivers/DigitalOut.h"
demayer 0:6bf0743ece18 20 #include "platform/PlatformMutex.h"
demayer 0:6bf0743ece18 21 #include "platform/NonCopyable.h"
demayer 0:6bf0743ece18 22
demayer 0:6bf0743ece18 23 namespace mbed {
demayer 0:6bf0743ece18 24 /** \addtogroup drivers */
demayer 0:6bf0743ece18 25
demayer 0:6bf0743ece18 26 /** A digital output bus, used for setting the state of a collection of pins
demayer 0:6bf0743ece18 27 * @ingroup drivers
demayer 0:6bf0743ece18 28 */
demayer 0:6bf0743ece18 29 class BusOut : private NonCopyable<BusOut> {
demayer 0:6bf0743ece18 30
demayer 0:6bf0743ece18 31 public:
demayer 0:6bf0743ece18 32
demayer 0:6bf0743ece18 33 /** Create an BusOut, connected to the specified pins
demayer 0:6bf0743ece18 34 *
demayer 0:6bf0743ece18 35 * @param p0 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 36 * @param p1 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 37 * @param p2 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 38 * @param p3 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 39 * @param p4 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 40 * @param p5 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 41 * @param p6 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 42 * @param p7 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 43 * @param p8 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 44 * @param p9 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 45 * @param p10 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 46 * @param p11 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 47 * @param p12 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 48 * @param p13 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 49 * @param p14 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 50 * @param p15 DigitalOut pin to connect to bus bit
demayer 0:6bf0743ece18 51 *
demayer 0:6bf0743ece18 52 * @note Synchronization level: Thread safe
demayer 0:6bf0743ece18 53 *
demayer 0:6bf0743ece18 54 * @note
demayer 0:6bf0743ece18 55 * It is only required to specify as many pin variables as is required
demayer 0:6bf0743ece18 56 * for the bus; the rest will default to NC (not connected)
demayer 0:6bf0743ece18 57 */
demayer 0:6bf0743ece18 58 BusOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
demayer 0:6bf0743ece18 59 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
demayer 0:6bf0743ece18 60 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
demayer 0:6bf0743ece18 61 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
demayer 0:6bf0743ece18 62
demayer 0:6bf0743ece18 63 /** Create an BusOut, connected to the specified pins
demayer 0:6bf0743ece18 64 *
demayer 0:6bf0743ece18 65 * @param pins An array of pins to connect to bus the bit
demayer 0:6bf0743ece18 66 */
demayer 0:6bf0743ece18 67 BusOut(PinName pins[16]);
demayer 0:6bf0743ece18 68
demayer 0:6bf0743ece18 69 virtual ~BusOut();
demayer 0:6bf0743ece18 70
demayer 0:6bf0743ece18 71 /** Write the value to the output bus
demayer 0:6bf0743ece18 72 *
demayer 0:6bf0743ece18 73 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin
demayer 0:6bf0743ece18 74 */
demayer 0:6bf0743ece18 75 void write(int value);
demayer 0:6bf0743ece18 76
demayer 0:6bf0743ece18 77 /** Read the value currently output on the bus
demayer 0:6bf0743ece18 78 *
demayer 0:6bf0743ece18 79 * @returns
demayer 0:6bf0743ece18 80 * An integer with each bit corresponding to associated DigitalOut pin setting
demayer 0:6bf0743ece18 81 */
demayer 0:6bf0743ece18 82 int read();
demayer 0:6bf0743ece18 83
demayer 0:6bf0743ece18 84 /** Binary mask of bus pins connected to actual pins (not NC pins)
demayer 0:6bf0743ece18 85 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
demayer 0:6bf0743ece18 86 *
demayer 0:6bf0743ece18 87 * @returns
demayer 0:6bf0743ece18 88 * Binary mask of connected pins
demayer 0:6bf0743ece18 89 */
demayer 0:6bf0743ece18 90 int mask() {
demayer 0:6bf0743ece18 91 // No lock needed since _nc_mask is not modified outside the constructor
demayer 0:6bf0743ece18 92 return _nc_mask;
demayer 0:6bf0743ece18 93 }
demayer 0:6bf0743ece18 94
demayer 0:6bf0743ece18 95 /** A shorthand for write()
demayer 0:6bf0743ece18 96 * \sa BusOut::write()
demayer 0:6bf0743ece18 97 */
demayer 0:6bf0743ece18 98 BusOut& operator= (int v);
demayer 0:6bf0743ece18 99 BusOut& operator= (BusOut& rhs);
demayer 0:6bf0743ece18 100
demayer 0:6bf0743ece18 101 /** Access to particular bit in random-iterator fashion
demayer 0:6bf0743ece18 102 * @param index Bit Position
demayer 0:6bf0743ece18 103 */
demayer 0:6bf0743ece18 104 DigitalOut& operator[] (int index);
demayer 0:6bf0743ece18 105
demayer 0:6bf0743ece18 106 /** A shorthand for read()
demayer 0:6bf0743ece18 107 * \sa BusOut::read()
demayer 0:6bf0743ece18 108 */
demayer 0:6bf0743ece18 109 operator int();
demayer 0:6bf0743ece18 110
demayer 0:6bf0743ece18 111 protected:
demayer 0:6bf0743ece18 112 virtual void lock();
demayer 0:6bf0743ece18 113 virtual void unlock();
demayer 0:6bf0743ece18 114 DigitalOut* _pin[16];
demayer 0:6bf0743ece18 115
demayer 0:6bf0743ece18 116 /* Mask of bus's NC pins
demayer 0:6bf0743ece18 117 * If bit[n] is set to 1 - pin is connected
demayer 0:6bf0743ece18 118 * if bit[n] is cleared - pin is not connected (NC)
demayer 0:6bf0743ece18 119 */
demayer 0:6bf0743ece18 120 int _nc_mask;
demayer 0:6bf0743ece18 121
demayer 0:6bf0743ece18 122 PlatformMutex _mutex;
demayer 0:6bf0743ece18 123 };
demayer 0:6bf0743ece18 124
demayer 0:6bf0743ece18 125 } // namespace mbed
demayer 0:6bf0743ece18 126
demayer 0:6bf0743ece18 127 #endif