Opencv 3.1 project on GR-PEACH board
Fork of gr-peach-opencv-project by
drivers/DigitalInOut.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?
User | Revision | Line number | New contents of line |
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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_DIGITALINOUT_H |
thedo | 167:1657b442184c | 17 | #define MBED_DIGITALINOUT_H |
thedo | 167:1657b442184c | 18 | |
thedo | 167:1657b442184c | 19 | #include "platform/platform.h" |
thedo | 167:1657b442184c | 20 | |
thedo | 167:1657b442184c | 21 | #include "hal/gpio_api.h" |
thedo | 167:1657b442184c | 22 | #include "platform/mbed_critical.h" |
thedo | 167:1657b442184c | 23 | |
thedo | 167:1657b442184c | 24 | namespace mbed { |
thedo | 167:1657b442184c | 25 | /** \addtogroup drivers */ |
thedo | 167:1657b442184c | 26 | |
thedo | 167:1657b442184c | 27 | /** A digital input/output, used for setting or reading a bi-directional pin |
thedo | 167:1657b442184c | 28 | * |
thedo | 167:1657b442184c | 29 | * @note Synchronization level: Interrupt safe |
thedo | 167:1657b442184c | 30 | * @ingroup drivers |
thedo | 167:1657b442184c | 31 | */ |
thedo | 167:1657b442184c | 32 | class DigitalInOut { |
thedo | 167:1657b442184c | 33 | |
thedo | 167:1657b442184c | 34 | public: |
thedo | 167:1657b442184c | 35 | /** Create a DigitalInOut connected to the specified pin |
thedo | 167:1657b442184c | 36 | * |
thedo | 167:1657b442184c | 37 | * @param pin DigitalInOut pin to connect to |
thedo | 167:1657b442184c | 38 | */ |
thedo | 167:1657b442184c | 39 | DigitalInOut(PinName pin) : gpio() { |
thedo | 167:1657b442184c | 40 | // No lock needed in the constructor |
thedo | 167:1657b442184c | 41 | gpio_init_in(&gpio, pin); |
thedo | 167:1657b442184c | 42 | } |
thedo | 167:1657b442184c | 43 | |
thedo | 167:1657b442184c | 44 | /** Create a DigitalInOut connected to the specified pin |
thedo | 167:1657b442184c | 45 | * |
thedo | 167:1657b442184c | 46 | * @param pin DigitalInOut pin to connect to |
thedo | 167:1657b442184c | 47 | * @param direction the initial direction of the pin |
thedo | 167:1657b442184c | 48 | * @param mode the initial mode of the pin |
thedo | 167:1657b442184c | 49 | * @param value the initial value of the pin if is an output |
thedo | 167:1657b442184c | 50 | */ |
thedo | 167:1657b442184c | 51 | DigitalInOut(PinName pin, PinDirection direction, PinMode mode, int value) : gpio() { |
thedo | 167:1657b442184c | 52 | // No lock needed in the constructor |
thedo | 167:1657b442184c | 53 | gpio_init_inout(&gpio, pin, direction, mode, value); |
thedo | 167:1657b442184c | 54 | } |
thedo | 167:1657b442184c | 55 | |
thedo | 167:1657b442184c | 56 | /** Set the output, specified as 0 or 1 (int) |
thedo | 167:1657b442184c | 57 | * |
thedo | 167:1657b442184c | 58 | * @param value An integer specifying the pin output value, |
thedo | 167:1657b442184c | 59 | * 0 for logical 0, 1 (or any other non-zero value) for logical 1 |
thedo | 167:1657b442184c | 60 | */ |
thedo | 167:1657b442184c | 61 | void write(int value) { |
thedo | 167:1657b442184c | 62 | // Thread safe / atomic HAL call |
thedo | 167:1657b442184c | 63 | gpio_write(&gpio, value); |
thedo | 167:1657b442184c | 64 | } |
thedo | 167:1657b442184c | 65 | |
thedo | 167:1657b442184c | 66 | /** Return the output setting, represented as 0 or 1 (int) |
thedo | 167:1657b442184c | 67 | * |
thedo | 167:1657b442184c | 68 | * @returns |
thedo | 167:1657b442184c | 69 | * an integer representing the output setting of the pin if it is an output, |
thedo | 167:1657b442184c | 70 | * or read the input if set as an input |
thedo | 167:1657b442184c | 71 | */ |
thedo | 167:1657b442184c | 72 | int read() { |
thedo | 167:1657b442184c | 73 | // Thread safe / atomic HAL call |
thedo | 167:1657b442184c | 74 | return gpio_read(&gpio); |
thedo | 167:1657b442184c | 75 | } |
thedo | 167:1657b442184c | 76 | |
thedo | 167:1657b442184c | 77 | /** Set as an output |
thedo | 167:1657b442184c | 78 | */ |
thedo | 167:1657b442184c | 79 | void output() { |
thedo | 167:1657b442184c | 80 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 81 | gpio_dir(&gpio, PIN_OUTPUT); |
thedo | 167:1657b442184c | 82 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 83 | } |
thedo | 167:1657b442184c | 84 | |
thedo | 167:1657b442184c | 85 | /** Set as an input |
thedo | 167:1657b442184c | 86 | */ |
thedo | 167:1657b442184c | 87 | void input() { |
thedo | 167:1657b442184c | 88 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 89 | gpio_dir(&gpio, PIN_INPUT); |
thedo | 167:1657b442184c | 90 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 91 | } |
thedo | 167:1657b442184c | 92 | |
thedo | 167:1657b442184c | 93 | /** Set the input pin mode |
thedo | 167:1657b442184c | 94 | * |
thedo | 167:1657b442184c | 95 | * @param pull PullUp, PullDown, PullNone, OpenDrain |
thedo | 167:1657b442184c | 96 | */ |
thedo | 167:1657b442184c | 97 | void mode(PinMode pull) { |
thedo | 167:1657b442184c | 98 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 99 | gpio_mode(&gpio, pull); |
thedo | 167:1657b442184c | 100 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 101 | } |
thedo | 167:1657b442184c | 102 | |
thedo | 167:1657b442184c | 103 | /** Return the output setting, represented as 0 or 1 (int) |
thedo | 167:1657b442184c | 104 | * |
thedo | 167:1657b442184c | 105 | * @returns |
thedo | 167:1657b442184c | 106 | * Non zero value if pin is connected to uc GPIO |
thedo | 167:1657b442184c | 107 | * 0 if gpio object was initialized with NC |
thedo | 167:1657b442184c | 108 | */ |
thedo | 167:1657b442184c | 109 | int is_connected() { |
thedo | 167:1657b442184c | 110 | // Thread safe / atomic HAL call |
thedo | 167:1657b442184c | 111 | return gpio_is_connected(&gpio); |
thedo | 167:1657b442184c | 112 | } |
thedo | 167:1657b442184c | 113 | |
thedo | 167:1657b442184c | 114 | /** A shorthand for write() |
thedo | 167:1657b442184c | 115 | */ |
thedo | 167:1657b442184c | 116 | DigitalInOut& operator= (int value) { |
thedo | 167:1657b442184c | 117 | // Underlying write is thread safe |
thedo | 167:1657b442184c | 118 | write(value); |
thedo | 167:1657b442184c | 119 | return *this; |
thedo | 167:1657b442184c | 120 | } |
thedo | 167:1657b442184c | 121 | |
thedo | 167:1657b442184c | 122 | DigitalInOut& operator= (DigitalInOut& rhs) { |
thedo | 167:1657b442184c | 123 | core_util_critical_section_enter(); |
thedo | 167:1657b442184c | 124 | write(rhs.read()); |
thedo | 167:1657b442184c | 125 | core_util_critical_section_exit(); |
thedo | 167:1657b442184c | 126 | return *this; |
thedo | 167:1657b442184c | 127 | } |
thedo | 167:1657b442184c | 128 | |
thedo | 167:1657b442184c | 129 | /** A shorthand for read() |
thedo | 167:1657b442184c | 130 | */ |
thedo | 167:1657b442184c | 131 | operator int() { |
thedo | 167:1657b442184c | 132 | // Underlying call is thread safe |
thedo | 167:1657b442184c | 133 | return read(); |
thedo | 167:1657b442184c | 134 | } |
thedo | 167:1657b442184c | 135 | |
thedo | 167:1657b442184c | 136 | protected: |
thedo | 167:1657b442184c | 137 | gpio_t gpio; |
thedo | 167:1657b442184c | 138 | }; |
thedo | 167:1657b442184c | 139 | |
thedo | 167:1657b442184c | 140 | } // namespace mbed |
thedo | 167:1657b442184c | 141 | |
thedo | 167:1657b442184c | 142 | #endif |
thedo | 167:1657b442184c | 143 |