Opencv 3.1 project on GR-PEACH board
Fork of gr-peach-opencv-project by
drivers/AnalogIn.h@167:1657b442184c, 2017-06-29 (annotated)
- Committer:
- thedo
- Date:
- Thu Jun 29 11:01:39 2017 +0000
- Revision:
- 167:1657b442184c
Opencv 3.1 project on GR-PEACH board, 4 apps
Who changed what in which revision?
User | Revision | Line number | New 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_ANALOGIN_H |
thedo | 167:1657b442184c | 17 | #define MBED_ANALOGIN_H |
thedo | 167:1657b442184c | 18 | |
thedo | 167:1657b442184c | 19 | #include "platform/platform.h" |
thedo | 167:1657b442184c | 20 | |
thedo | 167:1657b442184c | 21 | #if defined (DEVICE_ANALOGIN) || defined(DOXYGEN_ONLY) |
thedo | 167:1657b442184c | 22 | |
thedo | 167:1657b442184c | 23 | #include "hal/analogin_api.h" |
thedo | 167:1657b442184c | 24 | #include "platform/SingletonPtr.h" |
thedo | 167:1657b442184c | 25 | #include "platform/PlatformMutex.h" |
thedo | 167:1657b442184c | 26 | |
thedo | 167:1657b442184c | 27 | namespace mbed { |
thedo | 167:1657b442184c | 28 | /** \addtogroup drivers */ |
thedo | 167:1657b442184c | 29 | |
thedo | 167:1657b442184c | 30 | /** An analog input, used for reading the voltage on a pin |
thedo | 167:1657b442184c | 31 | * |
thedo | 167:1657b442184c | 32 | * @note Synchronization level: Thread safe |
thedo | 167:1657b442184c | 33 | * |
thedo | 167:1657b442184c | 34 | * Example: |
thedo | 167:1657b442184c | 35 | * @code |
thedo | 167:1657b442184c | 36 | * // Print messages when the AnalogIn is greater than 50% |
thedo | 167:1657b442184c | 37 | * |
thedo | 167:1657b442184c | 38 | * #include "mbed.h" |
thedo | 167:1657b442184c | 39 | * |
thedo | 167:1657b442184c | 40 | * AnalogIn temperature(p20); |
thedo | 167:1657b442184c | 41 | * |
thedo | 167:1657b442184c | 42 | * int main() { |
thedo | 167:1657b442184c | 43 | * while(1) { |
thedo | 167:1657b442184c | 44 | * if(temperature > 0.5) { |
thedo | 167:1657b442184c | 45 | * printf("Too hot! (%f)", temperature.read()); |
thedo | 167:1657b442184c | 46 | * } |
thedo | 167:1657b442184c | 47 | * } |
thedo | 167:1657b442184c | 48 | * } |
thedo | 167:1657b442184c | 49 | * @endcode |
thedo | 167:1657b442184c | 50 | * @ingroup drivers |
thedo | 167:1657b442184c | 51 | */ |
thedo | 167:1657b442184c | 52 | class AnalogIn { |
thedo | 167:1657b442184c | 53 | |
thedo | 167:1657b442184c | 54 | public: |
thedo | 167:1657b442184c | 55 | |
thedo | 167:1657b442184c | 56 | /** Create an AnalogIn, connected to the specified pin |
thedo | 167:1657b442184c | 57 | * |
thedo | 167:1657b442184c | 58 | * @param pin AnalogIn pin to connect to |
thedo | 167:1657b442184c | 59 | */ |
thedo | 167:1657b442184c | 60 | AnalogIn(PinName pin) { |
thedo | 167:1657b442184c | 61 | lock(); |
thedo | 167:1657b442184c | 62 | analogin_init(&_adc, pin); |
thedo | 167:1657b442184c | 63 | unlock(); |
thedo | 167:1657b442184c | 64 | } |
thedo | 167:1657b442184c | 65 | |
thedo | 167:1657b442184c | 66 | /** Read the input voltage, represented as a float in the range [0.0, 1.0] |
thedo | 167:1657b442184c | 67 | * |
thedo | 167:1657b442184c | 68 | * @returns A floating-point value representing the current input voltage, measured as a percentage |
thedo | 167:1657b442184c | 69 | */ |
thedo | 167:1657b442184c | 70 | float read() { |
thedo | 167:1657b442184c | 71 | lock(); |
thedo | 167:1657b442184c | 72 | float ret = analogin_read(&_adc); |
thedo | 167:1657b442184c | 73 | unlock(); |
thedo | 167:1657b442184c | 74 | return ret; |
thedo | 167:1657b442184c | 75 | } |
thedo | 167:1657b442184c | 76 | |
thedo | 167:1657b442184c | 77 | /** Read the input voltage, represented as an unsigned short in the range [0x0, 0xFFFF] |
thedo | 167:1657b442184c | 78 | * |
thedo | 167:1657b442184c | 79 | * @returns |
thedo | 167:1657b442184c | 80 | * 16-bit unsigned short representing the current input voltage, normalised to a 16-bit value |
thedo | 167:1657b442184c | 81 | */ |
thedo | 167:1657b442184c | 82 | unsigned short read_u16() { |
thedo | 167:1657b442184c | 83 | lock(); |
thedo | 167:1657b442184c | 84 | unsigned short ret = analogin_read_u16(&_adc); |
thedo | 167:1657b442184c | 85 | unlock(); |
thedo | 167:1657b442184c | 86 | return ret; |
thedo | 167:1657b442184c | 87 | } |
thedo | 167:1657b442184c | 88 | |
thedo | 167:1657b442184c | 89 | /** An operator shorthand for read() |
thedo | 167:1657b442184c | 90 | * |
thedo | 167:1657b442184c | 91 | * The float() operator can be used as a shorthand for read() to simplify common code sequences |
thedo | 167:1657b442184c | 92 | * |
thedo | 167:1657b442184c | 93 | * Example: |
thedo | 167:1657b442184c | 94 | * @code |
thedo | 167:1657b442184c | 95 | * float x = volume.read(); |
thedo | 167:1657b442184c | 96 | * float x = volume; |
thedo | 167:1657b442184c | 97 | * |
thedo | 167:1657b442184c | 98 | * if(volume.read() > 0.25) { ... } |
thedo | 167:1657b442184c | 99 | * if(volume > 0.25) { ... } |
thedo | 167:1657b442184c | 100 | * @endcode |
thedo | 167:1657b442184c | 101 | */ |
thedo | 167:1657b442184c | 102 | operator float() { |
thedo | 167:1657b442184c | 103 | // Underlying call is thread safe |
thedo | 167:1657b442184c | 104 | return read(); |
thedo | 167:1657b442184c | 105 | } |
thedo | 167:1657b442184c | 106 | |
thedo | 167:1657b442184c | 107 | virtual ~AnalogIn() { |
thedo | 167:1657b442184c | 108 | // Do nothing |
thedo | 167:1657b442184c | 109 | } |
thedo | 167:1657b442184c | 110 | |
thedo | 167:1657b442184c | 111 | protected: |
thedo | 167:1657b442184c | 112 | |
thedo | 167:1657b442184c | 113 | virtual void lock() { |
thedo | 167:1657b442184c | 114 | _mutex->lock(); |
thedo | 167:1657b442184c | 115 | } |
thedo | 167:1657b442184c | 116 | |
thedo | 167:1657b442184c | 117 | virtual void unlock() { |
thedo | 167:1657b442184c | 118 | _mutex->unlock(); |
thedo | 167:1657b442184c | 119 | } |
thedo | 167:1657b442184c | 120 | |
thedo | 167:1657b442184c | 121 | analogin_t _adc; |
thedo | 167:1657b442184c | 122 | static SingletonPtr<PlatformMutex> _mutex; |
thedo | 167:1657b442184c | 123 | }; |
thedo | 167:1657b442184c | 124 | |
thedo | 167:1657b442184c | 125 | } // namespace mbed |
thedo | 167:1657b442184c | 126 | |
thedo | 167:1657b442184c | 127 | #endif |
thedo | 167:1657b442184c | 128 | |
thedo | 167:1657b442184c | 129 | #endif |
thedo | 167:1657b442184c | 130 | |
thedo | 167:1657b442184c | 131 |