Magnificent7 / Hackathon

Includes library modifications to allow access to AIN_4 (AIN_0 / 5)

mbd_os/hal/api/BusInOut.h@0:eafc3fd41f75, 2016-09-20 (annotated)

Committer:
bryantaylor
Date:
Tue Sep 20 21:26:12 2016 +0000
Revision:
0:eafc3fd41f75
hackathon

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bryantaylor 0:eafc3fd41f75 1 /* mbed Microcontroller Library
bryantaylor 0:eafc3fd41f75 2 * Copyright (c) 2006-2013 ARM Limited
bryantaylor 0:eafc3fd41f75 3 *
bryantaylor 0:eafc3fd41f75 4 * Licensed under the Apache License, Version 2.0 (the "License");
bryantaylor 0:eafc3fd41f75 5 * you may not use this file except in compliance with the License.
bryantaylor 0:eafc3fd41f75 6 * You may obtain a copy of the License at
bryantaylor 0:eafc3fd41f75 7 *
bryantaylor 0:eafc3fd41f75 8 * http://www.apache.org/licenses/LICENSE-2.0
bryantaylor 0:eafc3fd41f75 9 *
bryantaylor 0:eafc3fd41f75 10 * Unless required by applicable law or agreed to in writing, software
bryantaylor 0:eafc3fd41f75 11 * distributed under the License is distributed on an "AS IS" BASIS,
bryantaylor 0:eafc3fd41f75 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bryantaylor 0:eafc3fd41f75 13 * See the License for the specific language governing permissions and
bryantaylor 0:eafc3fd41f75 14 * limitations under the License.
bryantaylor 0:eafc3fd41f75 15 */
bryantaylor 0:eafc3fd41f75 16 #ifndef MBED_BUSINOUT_H
bryantaylor 0:eafc3fd41f75 17 #define MBED_BUSINOUT_H
bryantaylor 0:eafc3fd41f75 18
bryantaylor 0:eafc3fd41f75 19 #include "DigitalInOut.h"
bryantaylor 0:eafc3fd41f75 20 #include "PlatformMutex.h"
bryantaylor 0:eafc3fd41f75 21
bryantaylor 0:eafc3fd41f75 22 namespace mbed {
bryantaylor 0:eafc3fd41f75 23
bryantaylor 0:eafc3fd41f75 24 /** A digital input output bus, used for setting the state of a collection of pins
bryantaylor 0:eafc3fd41f75 25 *
bryantaylor 0:eafc3fd41f75 26 * @Note Synchronization level: Thread safe
bryantaylor 0:eafc3fd41f75 27 */
bryantaylor 0:eafc3fd41f75 28 class BusInOut {
bryantaylor 0:eafc3fd41f75 29
bryantaylor 0:eafc3fd41f75 30 public:
bryantaylor 0:eafc3fd41f75 31
bryantaylor 0:eafc3fd41f75 32 /** Create an BusInOut, connected to the specified pins
bryantaylor 0:eafc3fd41f75 33 *
bryantaylor 0:eafc3fd41f75 34 * @param p<n> DigitalInOut pin to connect to bus bit p<n> (p5-p30, NC)
bryantaylor 0:eafc3fd41f75 35 *
bryantaylor 0:eafc3fd41f75 36 * @note
bryantaylor 0:eafc3fd41f75 37 * It is only required to specify as many pin variables as is required
bryantaylor 0:eafc3fd41f75 38 * for the bus; the rest will default to NC (not connected)
bryantaylor 0:eafc3fd41f75 39 */
bryantaylor 0:eafc3fd41f75 40 BusInOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
bryantaylor 0:eafc3fd41f75 41 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
bryantaylor 0:eafc3fd41f75 42 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
bryantaylor 0:eafc3fd41f75 43 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
bryantaylor 0:eafc3fd41f75 44
bryantaylor 0:eafc3fd41f75 45 BusInOut(PinName pins[16]);
bryantaylor 0:eafc3fd41f75 46
bryantaylor 0:eafc3fd41f75 47 virtual ~BusInOut();
bryantaylor 0:eafc3fd41f75 48
bryantaylor 0:eafc3fd41f75 49 /* Group: Access Methods */
bryantaylor 0:eafc3fd41f75 50
bryantaylor 0:eafc3fd41f75 51 /** Write the value to the output bus
bryantaylor 0:eafc3fd41f75 52 *
bryantaylor 0:eafc3fd41f75 53 * @param value An integer specifying a bit to write for every corresponding DigitalInOut pin
bryantaylor 0:eafc3fd41f75 54 */
bryantaylor 0:eafc3fd41f75 55 void write(int value);
bryantaylor 0:eafc3fd41f75 56
bryantaylor 0:eafc3fd41f75 57 /** Read the value currently output on the bus
bryantaylor 0:eafc3fd41f75 58 *
bryantaylor 0:eafc3fd41f75 59 * @returns
bryantaylor 0:eafc3fd41f75 60 * An integer with each bit corresponding to associated DigitalInOut pin setting
bryantaylor 0:eafc3fd41f75 61 */
bryantaylor 0:eafc3fd41f75 62 int read();
bryantaylor 0:eafc3fd41f75 63
bryantaylor 0:eafc3fd41f75 64 /** Set as an output
bryantaylor 0:eafc3fd41f75 65 */
bryantaylor 0:eafc3fd41f75 66 void output();
bryantaylor 0:eafc3fd41f75 67
bryantaylor 0:eafc3fd41f75 68 /** Set as an input
bryantaylor 0:eafc3fd41f75 69 */
bryantaylor 0:eafc3fd41f75 70 void input();
bryantaylor 0:eafc3fd41f75 71
bryantaylor 0:eafc3fd41f75 72 /** Set the input pin mode
bryantaylor 0:eafc3fd41f75 73 *
bryantaylor 0:eafc3fd41f75 74 * @param mode PullUp, PullDown, PullNone
bryantaylor 0:eafc3fd41f75 75 */
bryantaylor 0:eafc3fd41f75 76 void mode(PinMode pull);
bryantaylor 0:eafc3fd41f75 77
bryantaylor 0:eafc3fd41f75 78 /** Binary mask of bus pins connected to actual pins (not NC pins)
bryantaylor 0:eafc3fd41f75 79 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
bryantaylor 0:eafc3fd41f75 80 *
bryantaylor 0:eafc3fd41f75 81 * @returns
bryantaylor 0:eafc3fd41f75 82 * Binary mask of connected pins
bryantaylor 0:eafc3fd41f75 83 */
bryantaylor 0:eafc3fd41f75 84 int mask() {
bryantaylor 0:eafc3fd41f75 85 // No lock needed since _nc_mask is not modified outside the constructor
bryantaylor 0:eafc3fd41f75 86 return _nc_mask;
bryantaylor 0:eafc3fd41f75 87 }
bryantaylor 0:eafc3fd41f75 88
bryantaylor 0:eafc3fd41f75 89 /** A shorthand for write()
bryantaylor 0:eafc3fd41f75 90 */
bryantaylor 0:eafc3fd41f75 91 BusInOut& operator= (int v);
bryantaylor 0:eafc3fd41f75 92 BusInOut& operator= (BusInOut& rhs);
bryantaylor 0:eafc3fd41f75 93
bryantaylor 0:eafc3fd41f75 94 /** Access to particular bit in random-iterator fashion
bryantaylor 0:eafc3fd41f75 95 */
bryantaylor 0:eafc3fd41f75 96 DigitalInOut& operator[] (int index);
bryantaylor 0:eafc3fd41f75 97
bryantaylor 0:eafc3fd41f75 98 /** A shorthand for read()
bryantaylor 0:eafc3fd41f75 99 */
bryantaylor 0:eafc3fd41f75 100 operator int();
bryantaylor 0:eafc3fd41f75 101
bryantaylor 0:eafc3fd41f75 102 protected:
bryantaylor 0:eafc3fd41f75 103 virtual void lock();
bryantaylor 0:eafc3fd41f75 104 virtual void unlock();
bryantaylor 0:eafc3fd41f75 105 DigitalInOut* _pin[16];
bryantaylor 0:eafc3fd41f75 106
bryantaylor 0:eafc3fd41f75 107 /** Mask of bus's NC pins
bryantaylor 0:eafc3fd41f75 108 * If bit[n] is set to 1 - pin is connected
bryantaylor 0:eafc3fd41f75 109 * if bit[n] is cleared - pin is not connected (NC)
bryantaylor 0:eafc3fd41f75 110 */
bryantaylor 0:eafc3fd41f75 111 int _nc_mask;
bryantaylor 0:eafc3fd41f75 112
bryantaylor 0:eafc3fd41f75 113 PlatformMutex _mutex;
bryantaylor 0:eafc3fd41f75 114
bryantaylor 0:eafc3fd41f75 115 /* disallow copy constructor and assignment operators */
bryantaylor 0:eafc3fd41f75 116 private:
bryantaylor 0:eafc3fd41f75 117 BusInOut(const BusInOut&);
bryantaylor 0:eafc3fd41f75 118 BusInOut & operator = (const BusInOut&);
bryantaylor 0:eafc3fd41f75 119 };
bryantaylor 0:eafc3fd41f75 120
bryantaylor 0:eafc3fd41f75 121 } // namespace mbed
bryantaylor 0:eafc3fd41f75 122
bryantaylor 0:eafc3fd41f75 123 #endif