the do / gr-peach-opencv-project

Opencv 3.1 project on GR-PEACH board

Fork of gr-peach-opencv-project by the do

drivers/PortOut.h@170:54ff26da7eb6, 2017-07-04 (annotated)

Committer:
thedo
Date:
Tue Jul 04 06:23:13 2017 +0000
Revision:
170:54ff26da7eb6
Parent:
167:1657b442184c 
project opencv 3.1 on GR PEACH board, no use SD card.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
thedo 167:1657b442184c 1 /* mbed Microcontroller Library
thedo 167:1657b442184c 2 * Copyright (c) 2006-2013 ARM Limited
thedo 167:1657b442184c 3 *
thedo 167:1657b442184c 4 * Licensed under the Apache License, Version 2.0 (the "License");
thedo 167:1657b442184c 5 * you may not use this file except in compliance with the License.
thedo 167:1657b442184c 6 * You may obtain a copy of the License at
thedo 167:1657b442184c 7 *
thedo 167:1657b442184c 8 * http://www.apache.org/licenses/LICENSE-2.0
thedo 167:1657b442184c 9 *
thedo 167:1657b442184c 10 * Unless required by applicable law or agreed to in writing, software
thedo 167:1657b442184c 11 * distributed under the License is distributed on an "AS IS" BASIS,
thedo 167:1657b442184c 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
thedo 167:1657b442184c 13 * See the License for the specific language governing permissions and
thedo 167:1657b442184c 14 * limitations under the License.
thedo 167:1657b442184c 15 */
thedo 167:1657b442184c 16 #ifndef MBED_PORTOUT_H
thedo 167:1657b442184c 17 #define MBED_PORTOUT_H
thedo 167:1657b442184c 18
thedo 167:1657b442184c 19 #include "platform/platform.h"
thedo 167:1657b442184c 20
thedo 167:1657b442184c 21 #if defined (DEVICE_PORTOUT) || defined(DOXYGEN_ONLY)
thedo 167:1657b442184c 22
thedo 167:1657b442184c 23 #include "hal/port_api.h"
thedo 167:1657b442184c 24 #include "platform/mbed_critical.h"
thedo 167:1657b442184c 25
thedo 167:1657b442184c 26 namespace mbed {
thedo 167:1657b442184c 27 /** \addtogroup drivers */
thedo 167:1657b442184c 28 /** A multiple pin digital out
thedo 167:1657b442184c 29 *
thedo 167:1657b442184c 30 * @note Synchronization level: Interrupt safe
thedo 167:1657b442184c 31 *
thedo 167:1657b442184c 32 * Example:
thedo 167:1657b442184c 33 * @code
thedo 167:1657b442184c 34 * // Toggle all four LEDs
thedo 167:1657b442184c 35 *
thedo 167:1657b442184c 36 * #include "mbed.h"
thedo 167:1657b442184c 37 *
thedo 167:1657b442184c 38 * // LED1 = P1.18 LED2 = P1.20 LED3 = P1.21 LED4 = P1.23
thedo 167:1657b442184c 39 * #define LED_MASK 0x00B40000
thedo 167:1657b442184c 40 *
thedo 167:1657b442184c 41 * PortOut ledport(Port1, LED_MASK);
thedo 167:1657b442184c 42 *
thedo 167:1657b442184c 43 * int main() {
thedo 167:1657b442184c 44 * while(1) {
thedo 167:1657b442184c 45 * ledport = LED_MASK;
thedo 167:1657b442184c 46 * wait(1);
thedo 167:1657b442184c 47 * ledport = 0;
thedo 167:1657b442184c 48 * wait(1);
thedo 167:1657b442184c 49 * }
thedo 167:1657b442184c 50 * }
thedo 167:1657b442184c 51 * @endcode
thedo 167:1657b442184c 52 * @ingroup drivers
thedo 167:1657b442184c 53 */
thedo 167:1657b442184c 54 class PortOut {
thedo 167:1657b442184c 55 public:
thedo 167:1657b442184c 56
thedo 167:1657b442184c 57 /** Create an PortOut, connected to the specified port
thedo 167:1657b442184c 58 *
thedo 167:1657b442184c 59 * @param port Port to connect to (Port0-Port5)
thedo 167:1657b442184c 60 * @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
thedo 167:1657b442184c 61 */
thedo 167:1657b442184c 62 PortOut(PortName port, int mask = 0xFFFFFFFF) {
thedo 167:1657b442184c 63 core_util_critical_section_enter();
thedo 167:1657b442184c 64 port_init(&_port, port, mask, PIN_OUTPUT);
thedo 167:1657b442184c 65 core_util_critical_section_exit();
thedo 167:1657b442184c 66 }
thedo 167:1657b442184c 67
thedo 167:1657b442184c 68 /** Write the value to the output port
thedo 167:1657b442184c 69 *
thedo 167:1657b442184c 70 * @param value An integer specifying a bit to write for every corresponding PortOut pin
thedo 167:1657b442184c 71 */
thedo 167:1657b442184c 72 void write(int value) {
thedo 167:1657b442184c 73 port_write(&_port, value);
thedo 167:1657b442184c 74 }
thedo 167:1657b442184c 75
thedo 167:1657b442184c 76 /** Read the value currently output on the port
thedo 167:1657b442184c 77 *
thedo 167:1657b442184c 78 * @returns
thedo 167:1657b442184c 79 * An integer with each bit corresponding to associated PortOut pin setting
thedo 167:1657b442184c 80 */
thedo 167:1657b442184c 81 int read() {
thedo 167:1657b442184c 82 return port_read(&_port);
thedo 167:1657b442184c 83 }
thedo 167:1657b442184c 84
thedo 167:1657b442184c 85 /** A shorthand for write()
thedo 167:1657b442184c 86 */
thedo 167:1657b442184c 87 PortOut& operator= (int value) {
thedo 167:1657b442184c 88 write(value);
thedo 167:1657b442184c 89 return *this;
thedo 167:1657b442184c 90 }
thedo 167:1657b442184c 91
thedo 167:1657b442184c 92 PortOut& operator= (PortOut& rhs) {
thedo 167:1657b442184c 93 write(rhs.read());
thedo 167:1657b442184c 94 return *this;
thedo 167:1657b442184c 95 }
thedo 167:1657b442184c 96
thedo 167:1657b442184c 97 /** A shorthand for read()
thedo 167:1657b442184c 98 */
thedo 167:1657b442184c 99 operator int() {
thedo 167:1657b442184c 100 return read();
thedo 167:1657b442184c 101 }
thedo 167:1657b442184c 102
thedo 167:1657b442184c 103 private:
thedo 167:1657b442184c 104 port_t _port;
thedo 167:1657b442184c 105 };
thedo 167:1657b442184c 106
thedo 167:1657b442184c 107 } // namespace mbed
thedo 167:1657b442184c 108
thedo 167:1657b442184c 109 #endif
thedo 167:1657b442184c 110
thedo 167:1657b442184c 111 #endif
thedo 167:1657b442184c 112