PES4 / Mbed OS Queue_02

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mbed-os/drivers/PortOut.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_PORTOUT_H
demayer 0:6bf0743ece18 17 #define MBED_PORTOUT_H
demayer 0:6bf0743ece18 18
demayer 0:6bf0743ece18 19 #include "platform/platform.h"
demayer 0:6bf0743ece18 20
demayer 0:6bf0743ece18 21 #if defined (DEVICE_PORTOUT) || defined(DOXYGEN_ONLY)
demayer 0:6bf0743ece18 22
demayer 0:6bf0743ece18 23 #include "hal/port_api.h"
demayer 0:6bf0743ece18 24 #include "platform/mbed_critical.h"
demayer 0:6bf0743ece18 25
demayer 0:6bf0743ece18 26 namespace mbed {
demayer 0:6bf0743ece18 27 /** \addtogroup drivers */
demayer 0:6bf0743ece18 28 /** A multiple pin digital out
demayer 0:6bf0743ece18 29 *
demayer 0:6bf0743ece18 30 * @note Synchronization level: Interrupt safe
demayer 0:6bf0743ece18 31 *
demayer 0:6bf0743ece18 32 * Example:
demayer 0:6bf0743ece18 33 * @code
demayer 0:6bf0743ece18 34 * // Toggle all four LEDs
demayer 0:6bf0743ece18 35 *
demayer 0:6bf0743ece18 36 * #include "mbed.h"
demayer 0:6bf0743ece18 37 *
demayer 0:6bf0743ece18 38 * // LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23
demayer 0:6bf0743ece18 39 * #define LED_MASK 0x00B40000
demayer 0:6bf0743ece18 40 *
demayer 0:6bf0743ece18 41 * PortOut ledport(Port1, LED_MASK);
demayer 0:6bf0743ece18 42 *
demayer 0:6bf0743ece18 43 * int main() {
demayer 0:6bf0743ece18 44 * while(1) {
demayer 0:6bf0743ece18 45 * ledport = LED_MASK;
demayer 0:6bf0743ece18 46 * wait(1);
demayer 0:6bf0743ece18 47 * ledport = 0;
demayer 0:6bf0743ece18 48 * wait(1);
demayer 0:6bf0743ece18 49 * }
demayer 0:6bf0743ece18 50 * }
demayer 0:6bf0743ece18 51 * @endcode
demayer 0:6bf0743ece18 52 * @ingroup drivers
demayer 0:6bf0743ece18 53 */
demayer 0:6bf0743ece18 54 class PortOut {
demayer 0:6bf0743ece18 55 public:
demayer 0:6bf0743ece18 56
demayer 0:6bf0743ece18 57 /** Create an PortOut, connected to the specified port
demayer 0:6bf0743ece18 58 *
demayer 0:6bf0743ece18 59 * @param port Port to connect to (Port0-Port5)
demayer 0:6bf0743ece18 60 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
demayer 0:6bf0743ece18 61 */
demayer 0:6bf0743ece18 62 PortOut(PortName port, int mask = 0xFFFFFFFF) {
demayer 0:6bf0743ece18 63 core_util_critical_section_enter();
demayer 0:6bf0743ece18 64 port_init(&_port, port, mask, PIN_OUTPUT);
demayer 0:6bf0743ece18 65 core_util_critical_section_exit();
demayer 0:6bf0743ece18 66 }
demayer 0:6bf0743ece18 67
demayer 0:6bf0743ece18 68 /** Write the value to the output port
demayer 0:6bf0743ece18 69 *
demayer 0:6bf0743ece18 70 * @param value An integer specifying a bit to write for every corresponding PortOut pin
demayer 0:6bf0743ece18 71 */
demayer 0:6bf0743ece18 72 void write(int value) {
demayer 0:6bf0743ece18 73 port_write(&_port, value);
demayer 0:6bf0743ece18 74 }
demayer 0:6bf0743ece18 75
demayer 0:6bf0743ece18 76 /** Read the value currently output on the port
demayer 0:6bf0743ece18 77 *
demayer 0:6bf0743ece18 78 * @returns
demayer 0:6bf0743ece18 79 * An integer with each bit corresponding to associated PortOut pin setting
demayer 0:6bf0743ece18 80 */
demayer 0:6bf0743ece18 81 int read() {
demayer 0:6bf0743ece18 82 return port_read(&_port);
demayer 0:6bf0743ece18 83 }
demayer 0:6bf0743ece18 84
demayer 0:6bf0743ece18 85 /** A shorthand for write()
demayer 0:6bf0743ece18 86 * \sa PortOut::write()
demayer 0:6bf0743ece18 87 */
demayer 0:6bf0743ece18 88 PortOut& operator= (int value) {
demayer 0:6bf0743ece18 89 write(value);
demayer 0:6bf0743ece18 90 return *this;
demayer 0:6bf0743ece18 91 }
demayer 0:6bf0743ece18 92
demayer 0:6bf0743ece18 93 /** A shorthand for read()
demayer 0:6bf0743ece18 94 * \sa PortOut::read()
demayer 0:6bf0743ece18 95 */
demayer 0:6bf0743ece18 96 PortOut& operator= (PortOut& rhs) {
demayer 0:6bf0743ece18 97 write(rhs.read());
demayer 0:6bf0743ece18 98 return *this;
demayer 0:6bf0743ece18 99 }
demayer 0:6bf0743ece18 100
demayer 0:6bf0743ece18 101 /** A shorthand for read()
demayer 0:6bf0743ece18 102 * \sa PortOut::read()
demayer 0:6bf0743ece18 103 */
demayer 0:6bf0743ece18 104 operator int() {
demayer 0:6bf0743ece18 105 return read();
demayer 0:6bf0743ece18 106 }
demayer 0:6bf0743ece18 107
demayer 0:6bf0743ece18 108 private:
demayer 0:6bf0743ece18 109 port_t _port;
demayer 0:6bf0743ece18 110 };
demayer 0:6bf0743ece18 111
demayer 0:6bf0743ece18 112 } // namespace mbed
demayer 0:6bf0743ece18 113
demayer 0:6bf0743ece18 114 #endif
demayer 0:6bf0743ece18 115
demayer 0:6bf0743ece18 116 #endif