Tamura Mizuki / STM32F746_FFT

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mbed_src_STM32F7/api/BusInOut.h@0:3e46577dc273, 2016-10-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 09 10:11:14 2016 +0000
Revision:
0:3e46577dc273
1

Who changed what in which revision?

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MikamiUitOpen 0:3e46577dc273 1 /* mbed Microcontroller Library
MikamiUitOpen 0:3e46577dc273 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:3e46577dc273 3 *
MikamiUitOpen 0:3e46577dc273 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:3e46577dc273 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:3e46577dc273 6 * You may obtain a copy of the License at
MikamiUitOpen 0:3e46577dc273 7 *
MikamiUitOpen 0:3e46577dc273 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:3e46577dc273 9 *
MikamiUitOpen 0:3e46577dc273 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:3e46577dc273 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:3e46577dc273 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:3e46577dc273 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:3e46577dc273 14 * limitations under the License.
MikamiUitOpen 0:3e46577dc273 15 */
MikamiUitOpen 0:3e46577dc273 16 #ifndef MBED_BUSINOUT_H
MikamiUitOpen 0:3e46577dc273 17 #define MBED_BUSINOUT_H
MikamiUitOpen 0:3e46577dc273 18
MikamiUitOpen 0:3e46577dc273 19 #include "DigitalInOut.h"
MikamiUitOpen 0:3e46577dc273 20
MikamiUitOpen 0:3e46577dc273 21 namespace mbed {
MikamiUitOpen 0:3e46577dc273 22
MikamiUitOpen 0:3e46577dc273 23 /** A digital input output bus, used for setting the state of a collection of pins
MikamiUitOpen 0:3e46577dc273 24 */
MikamiUitOpen 0:3e46577dc273 25 class BusInOut {
MikamiUitOpen 0:3e46577dc273 26
MikamiUitOpen 0:3e46577dc273 27 public:
MikamiUitOpen 0:3e46577dc273 28
MikamiUitOpen 0:3e46577dc273 29 /** Create an BusInOut, connected to the specified pins
MikamiUitOpen 0:3e46577dc273 30 *
MikamiUitOpen 0:3e46577dc273 31 * @param p<n> DigitalInOut pin to connect to bus bit p<n> (p5-p30, NC)
MikamiUitOpen 0:3e46577dc273 32 *
MikamiUitOpen 0:3e46577dc273 33 * @note
MikamiUitOpen 0:3e46577dc273 34 * It is only required to specify as many pin variables as is required
MikamiUitOpen 0:3e46577dc273 35 * for the bus; the rest will default to NC (not connected)
MikamiUitOpen 0:3e46577dc273 36 */
MikamiUitOpen 0:3e46577dc273 37 BusInOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
MikamiUitOpen 0:3e46577dc273 38 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
MikamiUitOpen 0:3e46577dc273 39 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
MikamiUitOpen 0:3e46577dc273 40 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
MikamiUitOpen 0:3e46577dc273 41
MikamiUitOpen 0:3e46577dc273 42 BusInOut(PinName pins[16]);
MikamiUitOpen 0:3e46577dc273 43
MikamiUitOpen 0:3e46577dc273 44 virtual ~BusInOut();
MikamiUitOpen 0:3e46577dc273 45
MikamiUitOpen 0:3e46577dc273 46 /* Group: Access Methods */
MikamiUitOpen 0:3e46577dc273 47
MikamiUitOpen 0:3e46577dc273 48 /** Write the value to the output bus
MikamiUitOpen 0:3e46577dc273 49 *
MikamiUitOpen 0:3e46577dc273 50 * @param value An integer specifying a bit to write for every corresponding DigitalInOut pin
MikamiUitOpen 0:3e46577dc273 51 */
MikamiUitOpen 0:3e46577dc273 52 void write(int value);
MikamiUitOpen 0:3e46577dc273 53
MikamiUitOpen 0:3e46577dc273 54 /** Read the value currently output on the bus
MikamiUitOpen 0:3e46577dc273 55 *
MikamiUitOpen 0:3e46577dc273 56 * @returns
MikamiUitOpen 0:3e46577dc273 57 * An integer with each bit corresponding to associated DigitalInOut pin setting
MikamiUitOpen 0:3e46577dc273 58 */
MikamiUitOpen 0:3e46577dc273 59 int read();
MikamiUitOpen 0:3e46577dc273 60
MikamiUitOpen 0:3e46577dc273 61 /** Set as an output
MikamiUitOpen 0:3e46577dc273 62 */
MikamiUitOpen 0:3e46577dc273 63 void output();
MikamiUitOpen 0:3e46577dc273 64
MikamiUitOpen 0:3e46577dc273 65 /** Set as an input
MikamiUitOpen 0:3e46577dc273 66 */
MikamiUitOpen 0:3e46577dc273 67 void input();
MikamiUitOpen 0:3e46577dc273 68
MikamiUitOpen 0:3e46577dc273 69 /** Set the input pin mode
MikamiUitOpen 0:3e46577dc273 70 *
MikamiUitOpen 0:3e46577dc273 71 * @param mode PullUp, PullDown, PullNone
MikamiUitOpen 0:3e46577dc273 72 */
MikamiUitOpen 0:3e46577dc273 73 void mode(PinMode pull);
MikamiUitOpen 0:3e46577dc273 74
MikamiUitOpen 0:3e46577dc273 75 /** Binary mask of bus pins connected to actual pins (not NC pins)
MikamiUitOpen 0:3e46577dc273 76 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
MikamiUitOpen 0:3e46577dc273 77 *
MikamiUitOpen 0:3e46577dc273 78 * @returns
MikamiUitOpen 0:3e46577dc273 79 * Binary mask of connected pins
MikamiUitOpen 0:3e46577dc273 80 */
MikamiUitOpen 0:3e46577dc273 81 int mask() {
MikamiUitOpen 0:3e46577dc273 82 return _nc_mask;
MikamiUitOpen 0:3e46577dc273 83 }
MikamiUitOpen 0:3e46577dc273 84
MikamiUitOpen 0:3e46577dc273 85 #ifdef MBED_OPERATORS
MikamiUitOpen 0:3e46577dc273 86 /** A shorthand for write()
MikamiUitOpen 0:3e46577dc273 87 */
MikamiUitOpen 0:3e46577dc273 88 BusInOut& operator= (int v);
MikamiUitOpen 0:3e46577dc273 89 BusInOut& operator= (BusInOut& rhs);
MikamiUitOpen 0:3e46577dc273 90
MikamiUitOpen 0:3e46577dc273 91 /** Access to particular bit in random-iterator fashion
MikamiUitOpen 0:3e46577dc273 92 */
MikamiUitOpen 0:3e46577dc273 93 DigitalInOut& operator[] (int index);
MikamiUitOpen 0:3e46577dc273 94
MikamiUitOpen 0:3e46577dc273 95 /** A shorthand for read()
MikamiUitOpen 0:3e46577dc273 96 */
MikamiUitOpen 0:3e46577dc273 97 operator int();
MikamiUitOpen 0:3e46577dc273 98 #endif
MikamiUitOpen 0:3e46577dc273 99
MikamiUitOpen 0:3e46577dc273 100 protected:
MikamiUitOpen 0:3e46577dc273 101 DigitalInOut* _pin[16];
MikamiUitOpen 0:3e46577dc273 102
MikamiUitOpen 0:3e46577dc273 103 /** Mask of bus's NC pins
MikamiUitOpen 0:3e46577dc273 104 * If bit[n] is set to 1 - pin is connected
MikamiUitOpen 0:3e46577dc273 105 * if bit[n] is cleared - pin is not connected (NC)
MikamiUitOpen 0:3e46577dc273 106 */
MikamiUitOpen 0:3e46577dc273 107 int _nc_mask;
MikamiUitOpen 0:3e46577dc273 108
MikamiUitOpen 0:3e46577dc273 109 /* disallow copy constructor and assignment operators */
MikamiUitOpen 0:3e46577dc273 110 private:
MikamiUitOpen 0:3e46577dc273 111 BusInOut(const BusInOut&);
MikamiUitOpen 0:3e46577dc273 112 BusInOut & operator = (const BusInOut&);
MikamiUitOpen 0:3e46577dc273 113 };
MikamiUitOpen 0:3e46577dc273 114
MikamiUitOpen 0:3e46577dc273 115 } // namespace mbed
MikamiUitOpen 0:3e46577dc273 116
MikamiUitOpen 0:3e46577dc273 117 #endif