Tamura Mizuki / STM32F746_FFT

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Dependencies:   BSP_DISCO_F746NG SDFileSystem_Warning_Fixed

mbed_src_STM32F7/api/BusOut.h@3:6f7e05dd8d15, 2020-03-06 (annotated)

Committer:
aria19970520
Date:
Fri Mar 06 06:52:14 2020 +0000
Revision:
3:6f7e05dd8d15
Parent:
0:3e46577dc273 
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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_BUSOUT_H
MikamiUitOpen 0:3e46577dc273 17 #define MBED_BUSOUT_H
MikamiUitOpen 0:3e46577dc273 18
MikamiUitOpen 0:3e46577dc273 19 #include "DigitalOut.h"
MikamiUitOpen 0:3e46577dc273 20
MikamiUitOpen 0:3e46577dc273 21 namespace mbed {
MikamiUitOpen 0:3e46577dc273 22
MikamiUitOpen 0:3e46577dc273 23 /** A digital output bus, used for setting the state of a collection of pins
MikamiUitOpen 0:3e46577dc273 24 */
MikamiUitOpen 0:3e46577dc273 25 class BusOut {
MikamiUitOpen 0:3e46577dc273 26
MikamiUitOpen 0:3e46577dc273 27 public:
MikamiUitOpen 0:3e46577dc273 28
MikamiUitOpen 0:3e46577dc273 29 /** Create an BusOut, connected to the specified pins
MikamiUitOpen 0:3e46577dc273 30 *
MikamiUitOpen 0:3e46577dc273 31 * @param p<n> DigitalOut pin to connect to bus bit <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 BusOut(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 BusOut(PinName pins[16]);
MikamiUitOpen 0:3e46577dc273 43
MikamiUitOpen 0:3e46577dc273 44 virtual ~BusOut();
MikamiUitOpen 0:3e46577dc273 45
MikamiUitOpen 0:3e46577dc273 46 /** Write the value to the output bus
MikamiUitOpen 0:3e46577dc273 47 *
MikamiUitOpen 0:3e46577dc273 48 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin
MikamiUitOpen 0:3e46577dc273 49 */
MikamiUitOpen 0:3e46577dc273 50 void write(int value);
MikamiUitOpen 0:3e46577dc273 51
MikamiUitOpen 0:3e46577dc273 52 /** Read the value currently output on the bus
MikamiUitOpen 0:3e46577dc273 53 *
MikamiUitOpen 0:3e46577dc273 54 * @returns
MikamiUitOpen 0:3e46577dc273 55 * An integer with each bit corresponding to associated DigitalOut pin setting
MikamiUitOpen 0:3e46577dc273 56 */
MikamiUitOpen 0:3e46577dc273 57 int read();
MikamiUitOpen 0:3e46577dc273 58
MikamiUitOpen 0:3e46577dc273 59 /** Binary mask of bus pins connected to actual pins (not NC pins)
MikamiUitOpen 0:3e46577dc273 60 * 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 61 *
MikamiUitOpen 0:3e46577dc273 62 * @returns
MikamiUitOpen 0:3e46577dc273 63 * Binary mask of connected pins
MikamiUitOpen 0:3e46577dc273 64 */
MikamiUitOpen 0:3e46577dc273 65 int mask() {
MikamiUitOpen 0:3e46577dc273 66 return _nc_mask;
MikamiUitOpen 0:3e46577dc273 67 }
MikamiUitOpen 0:3e46577dc273 68
MikamiUitOpen 0:3e46577dc273 69 #ifdef MBED_OPERATORS
MikamiUitOpen 0:3e46577dc273 70 /** A shorthand for write()
MikamiUitOpen 0:3e46577dc273 71 */
MikamiUitOpen 0:3e46577dc273 72 BusOut& operator= (int v);
MikamiUitOpen 0:3e46577dc273 73 BusOut& operator= (BusOut& rhs);
MikamiUitOpen 0:3e46577dc273 74
MikamiUitOpen 0:3e46577dc273 75 /** Access to particular bit in random-iterator fashion
MikamiUitOpen 0:3e46577dc273 76 */
MikamiUitOpen 0:3e46577dc273 77 DigitalOut& operator[] (int index);
MikamiUitOpen 0:3e46577dc273 78
MikamiUitOpen 0:3e46577dc273 79 /** A shorthand for read()
MikamiUitOpen 0:3e46577dc273 80 */
MikamiUitOpen 0:3e46577dc273 81 operator int();
MikamiUitOpen 0:3e46577dc273 82 #endif
MikamiUitOpen 0:3e46577dc273 83
MikamiUitOpen 0:3e46577dc273 84 protected:
MikamiUitOpen 0:3e46577dc273 85 DigitalOut* _pin[16];
MikamiUitOpen 0:3e46577dc273 86
MikamiUitOpen 0:3e46577dc273 87 /** Mask of bus's NC pins
MikamiUitOpen 0:3e46577dc273 88 * If bit[n] is set to 1 - pin is connected
MikamiUitOpen 0:3e46577dc273 89 * if bit[n] is cleared - pin is not connected (NC)
MikamiUitOpen 0:3e46577dc273 90 */
MikamiUitOpen 0:3e46577dc273 91 int _nc_mask;
MikamiUitOpen 0:3e46577dc273 92
MikamiUitOpen 0:3e46577dc273 93 /* disallow copy constructor and assignment operators */
MikamiUitOpen 0:3e46577dc273 94 private:
MikamiUitOpen 0:3e46577dc273 95 BusOut(const BusOut&);
MikamiUitOpen 0:3e46577dc273 96 BusOut & operator = (const BusOut&);
MikamiUitOpen 0:3e46577dc273 97 };
MikamiUitOpen 0:3e46577dc273 98
MikamiUitOpen 0:3e46577dc273 99 } // namespace mbed
MikamiUitOpen 0:3e46577dc273 100
MikamiUitOpen 0:3e46577dc273 101 #endif