PHung Tung / DISCO-F746_WAV_PLAYER

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Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

SRC_STM32F7/api/PortOut.h@0:8ede47d38d10, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:37:21 2019 +0000
Revision:
0:8ede47d38d10
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phungductung 0:8ede47d38d10 1 /* mbed Microcontroller Library
phungductung 0:8ede47d38d10 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:8ede47d38d10 3 *
phungductung 0:8ede47d38d10 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:8ede47d38d10 5 * you may not use this file except in compliance with the License.
phungductung 0:8ede47d38d10 6 * You may obtain a copy of the License at
phungductung 0:8ede47d38d10 7 *
phungductung 0:8ede47d38d10 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:8ede47d38d10 9 *
phungductung 0:8ede47d38d10 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:8ede47d38d10 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:8ede47d38d10 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:8ede47d38d10 13 * See the License for the specific language governing permissions and
phungductung 0:8ede47d38d10 14 * limitations under the License.
phungductung 0:8ede47d38d10 15 */
phungductung 0:8ede47d38d10 16 #ifndef MBED_PORTOUT_H
phungductung 0:8ede47d38d10 17 #define MBED_PORTOUT_H
phungductung 0:8ede47d38d10 18
phungductung 0:8ede47d38d10 19 #include "platform.h"
phungductung 0:8ede47d38d10 20
phungductung 0:8ede47d38d10 21 #if DEVICE_PORTOUT
phungductung 0:8ede47d38d10 22
phungductung 0:8ede47d38d10 23 #include "port_api.h"
phungductung 0:8ede47d38d10 24
phungductung 0:8ede47d38d10 25 namespace mbed {
phungductung 0:8ede47d38d10 26 /** A multiple pin digital out
phungductung 0:8ede47d38d10 27 *
phungductung 0:8ede47d38d10 28 * Example:
phungductung 0:8ede47d38d10 29 * @code
phungductung 0:8ede47d38d10 30 * // Toggle all four LEDs
phungductung 0:8ede47d38d10 31 *
phungductung 0:8ede47d38d10 32 * #include "mbed.h"
phungductung 0:8ede47d38d10 33 *
phungductung 0:8ede47d38d10 34 * // LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23
phungductung 0:8ede47d38d10 35 * #define LED_MASK 0x00B40000
phungductung 0:8ede47d38d10 36 *
phungductung 0:8ede47d38d10 37 * PortOut ledport(Port1, LED_MASK);
phungductung 0:8ede47d38d10 38 *
phungductung 0:8ede47d38d10 39 * int main() {
phungductung 0:8ede47d38d10 40 * while(1) {
phungductung 0:8ede47d38d10 41 * ledport = LED_MASK;
phungductung 0:8ede47d38d10 42 * wait(1);
phungductung 0:8ede47d38d10 43 * ledport = 0;
phungductung 0:8ede47d38d10 44 * wait(1);
phungductung 0:8ede47d38d10 45 * }
phungductung 0:8ede47d38d10 46 * }
phungductung 0:8ede47d38d10 47 * @endcode
phungductung 0:8ede47d38d10 48 */
phungductung 0:8ede47d38d10 49 class PortOut {
phungductung 0:8ede47d38d10 50 public:
phungductung 0:8ede47d38d10 51
phungductung 0:8ede47d38d10 52 /** Create an PortOut, connected to the specified port
phungductung 0:8ede47d38d10 53 *
phungductung 0:8ede47d38d10 54 * @param port Port to connect to (Port0-Port5)
phungductung 0:8ede47d38d10 55 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
phungductung 0:8ede47d38d10 56 */
phungductung 0:8ede47d38d10 57 PortOut(PortName port, int mask = 0xFFFFFFFF) {
phungductung 0:8ede47d38d10 58 port_init(&_port, port, mask, PIN_OUTPUT);
phungductung 0:8ede47d38d10 59 }
phungductung 0:8ede47d38d10 60
phungductung 0:8ede47d38d10 61 /** Write the value to the output port
phungductung 0:8ede47d38d10 62 *
phungductung 0:8ede47d38d10 63 * @param value An integer specifying a bit to write for every corresponding PortOut pin
phungductung 0:8ede47d38d10 64 */
phungductung 0:8ede47d38d10 65 void write(int value) {
phungductung 0:8ede47d38d10 66 port_write(&_port, value);
phungductung 0:8ede47d38d10 67 }
phungductung 0:8ede47d38d10 68
phungductung 0:8ede47d38d10 69 /** Read the value currently output on the port
phungductung 0:8ede47d38d10 70 *
phungductung 0:8ede47d38d10 71 * @returns
phungductung 0:8ede47d38d10 72 * An integer with each bit corresponding to associated PortOut pin setting
phungductung 0:8ede47d38d10 73 */
phungductung 0:8ede47d38d10 74 int read() {
phungductung 0:8ede47d38d10 75 return port_read(&_port);
phungductung 0:8ede47d38d10 76 }
phungductung 0:8ede47d38d10 77
phungductung 0:8ede47d38d10 78 /** A shorthand for write()
phungductung 0:8ede47d38d10 79 */
phungductung 0:8ede47d38d10 80 PortOut& operator= (int value) {
phungductung 0:8ede47d38d10 81 write(value);
phungductung 0:8ede47d38d10 82 return *this;
phungductung 0:8ede47d38d10 83 }
phungductung 0:8ede47d38d10 84
phungductung 0:8ede47d38d10 85 PortOut& operator= (PortOut& rhs) {
phungductung 0:8ede47d38d10 86 write(rhs.read());
phungductung 0:8ede47d38d10 87 return *this;
phungductung 0:8ede47d38d10 88 }
phungductung 0:8ede47d38d10 89
phungductung 0:8ede47d38d10 90 /** A shorthand for read()
phungductung 0:8ede47d38d10 91 */
phungductung 0:8ede47d38d10 92 operator int() {
phungductung 0:8ede47d38d10 93 return read();
phungductung 0:8ede47d38d10 94 }
phungductung 0:8ede47d38d10 95
phungductung 0:8ede47d38d10 96 private:
phungductung 0:8ede47d38d10 97 port_t _port;
phungductung 0:8ede47d38d10 98 };
phungductung 0:8ede47d38d10 99
phungductung 0:8ede47d38d10 100 } // namespace mbed
phungductung 0:8ede47d38d10 101
phungductung 0:8ede47d38d10 102 #endif
phungductung 0:8ede47d38d10 103
phungductung 0:8ede47d38d10 104 #endif