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Diff: mbed/drivers/AnalogIn.h
- Revision:
- 12:406f75196a12
- Parent:
- 11:32eeb052cda5
- Child:
- 13:0c732e06d675
diff -r 32eeb052cda5 -r 406f75196a12 mbed/drivers/AnalogIn.h
--- a/mbed/drivers/AnalogIn.h Wed Aug 26 14:26:27 2020 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,139 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef MBED_ANALOGIN_H
-#define MBED_ANALOGIN_H
-
-#include "platform/platform.h"
-
-#if DEVICE_ANALOGIN || defined(DOXYGEN_ONLY)
-
-#include "hal/analogin_api.h"
-#include "platform/SingletonPtr.h"
-#include "platform/PlatformMutex.h"
-
-namespace mbed {
-/** \addtogroup drivers */
-
-/** An analog input, used for reading the voltage on a pin
- *
- * @note Synchronization level: Thread safe
- *
- * Example:
- * @code
- * // Print messages when the AnalogIn is greater than 50%
- *
- * #include "mbed.h"
- *
- * AnalogIn temperature(p20);
- *
- * int main() {
- * while(1) {
- * if(temperature > 0.5) {
- * printf("Too hot! (%f)", temperature.read());
- * }
- * }
- * }
- * @endcode
- * @ingroup drivers
- */
-class AnalogIn {
-
-public:
-
- /** Create an AnalogIn, connected to the specified pin
- *
- * @param pin AnalogIn pin to connect to
- */
- AnalogIn(PinName pin)
- {
- lock();
- analogin_init(&_adc, pin);
- unlock();
- }
-
- /** Read the input voltage, represented as a float in the range [0.0, 1.0]
- *
- * @returns A floating-point value representing the current input voltage, measured as a percentage
- */
- float read()
- {
- lock();
- float ret = analogin_read(&_adc);
- unlock();
- return ret;
- }
-
- /** Read the input voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
- *
- * @returns
- * 16-bit unsigned short representing the current input voltage, normalized to a 16-bit value
- */
- unsigned short read_u16()
- {
- lock();
- unsigned short ret = analogin_read_u16(&_adc);
- unlock();
- return ret;
- }
-
- /** An operator shorthand for read()
- *
- * The float() operator can be used as a shorthand for read() to simplify common code sequences
- *
- * Example:
- * @code
- * float x = volume.read();
- * float x = volume;
- *
- * if(volume.read() > 0.25) { ... }
- * if(volume > 0.25) { ... }
- * @endcode
- */
- operator float()
- {
- // Underlying call is thread safe
- return read();
- }
-
- virtual ~AnalogIn()
- {
- // Do nothing
- }
-
-protected:
-#if !defined(DOXYGEN_ONLY)
- virtual void lock()
- {
- _mutex->lock();
- }
-
- virtual void unlock()
- {
- _mutex->unlock();
- }
-
- analogin_t _adc;
- static SingletonPtr<PlatformMutex> _mutex;
-#endif //!defined(DOXYGEN_ONLY)
-};
-
-} // namespace mbed
-
-#endif
-
-#endif
-