Tamura Mizuki / STM32F746_FFT

fft

Dependencies:   BSP_DISCO_F746NG SDFileSystem_Warning_Fixed

mbed_src_STM32F7/api/AnalogIn.h@3:6f7e05dd8d15, 2020-03-06 (annotated)

Committer:
aria19970520
Date:
Fri Mar 06 06:52:14 2020 +0000
Revision:
3:6f7e05dd8d15
Parent:
0:3e46577dc273 
fft

Who changed what in which revision?

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MikamiUitOpen 0:3e46577dc273 1 /* mbed Microcontroller Library
MikamiUitOpen 0:3e46577dc273 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:3e46577dc273 3 *
MikamiUitOpen 0:3e46577dc273 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:3e46577dc273 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:3e46577dc273 6 * You may obtain a copy of the License at
MikamiUitOpen 0:3e46577dc273 7 *
MikamiUitOpen 0:3e46577dc273 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:3e46577dc273 9 *
MikamiUitOpen 0:3e46577dc273 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:3e46577dc273 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:3e46577dc273 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:3e46577dc273 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:3e46577dc273 14 * limitations under the License.
MikamiUitOpen 0:3e46577dc273 15 */
MikamiUitOpen 0:3e46577dc273 16 #ifndef MBED_ANALOGIN_H
MikamiUitOpen 0:3e46577dc273 17 #define MBED_ANALOGIN_H
MikamiUitOpen 0:3e46577dc273 18
MikamiUitOpen 0:3e46577dc273 19 #include "platform.h"
MikamiUitOpen 0:3e46577dc273 20
MikamiUitOpen 0:3e46577dc273 21 #if DEVICE_ANALOGIN
MikamiUitOpen 0:3e46577dc273 22
MikamiUitOpen 0:3e46577dc273 23 #include "analogin_api.h"
MikamiUitOpen 0:3e46577dc273 24
MikamiUitOpen 0:3e46577dc273 25 namespace mbed {
MikamiUitOpen 0:3e46577dc273 26
MikamiUitOpen 0:3e46577dc273 27 /** An analog input, used for reading the voltage on a pin
MikamiUitOpen 0:3e46577dc273 28 *
MikamiUitOpen 0:3e46577dc273 29 * Example:
MikamiUitOpen 0:3e46577dc273 30 * @code
MikamiUitOpen 0:3e46577dc273 31 * // Print messages when the AnalogIn is greater than 50%
MikamiUitOpen 0:3e46577dc273 32 *
MikamiUitOpen 0:3e46577dc273 33 * #include "mbed.h"
MikamiUitOpen 0:3e46577dc273 34 *
MikamiUitOpen 0:3e46577dc273 35 * AnalogIn temperature(p20);
MikamiUitOpen 0:3e46577dc273 36 *
MikamiUitOpen 0:3e46577dc273 37 * int main() {
MikamiUitOpen 0:3e46577dc273 38 * while(1) {
MikamiUitOpen 0:3e46577dc273 39 * if(temperature > 0.5) {
MikamiUitOpen 0:3e46577dc273 40 * printf("Too hot! (%f)", temperature.read());
MikamiUitOpen 0:3e46577dc273 41 * }
MikamiUitOpen 0:3e46577dc273 42 * }
MikamiUitOpen 0:3e46577dc273 43 * }
MikamiUitOpen 0:3e46577dc273 44 * @endcode
MikamiUitOpen 0:3e46577dc273 45 */
MikamiUitOpen 0:3e46577dc273 46 class AnalogIn {
MikamiUitOpen 0:3e46577dc273 47
MikamiUitOpen 0:3e46577dc273 48 public:
MikamiUitOpen 0:3e46577dc273 49
MikamiUitOpen 0:3e46577dc273 50 /** Create an AnalogIn, connected to the specified pin
MikamiUitOpen 0:3e46577dc273 51 *
MikamiUitOpen 0:3e46577dc273 52 * @param pin AnalogIn pin to connect to
MikamiUitOpen 0:3e46577dc273 53 * @param name (optional) A string to identify the object
MikamiUitOpen 0:3e46577dc273 54 */
MikamiUitOpen 0:3e46577dc273 55 AnalogIn(PinName pin) {
MikamiUitOpen 0:3e46577dc273 56 analogin_init(&_adc, pin);
MikamiUitOpen 0:3e46577dc273 57 }
MikamiUitOpen 0:3e46577dc273 58
MikamiUitOpen 0:3e46577dc273 59 /** Read the input voltage, represented as a float in the range [0.0, 1.0]
MikamiUitOpen 0:3e46577dc273 60 *
MikamiUitOpen 0:3e46577dc273 61 * @returns A floating-point value representing the current input voltage, measured as a percentage
MikamiUitOpen 0:3e46577dc273 62 */
MikamiUitOpen 0:3e46577dc273 63 float read() {
MikamiUitOpen 0:3e46577dc273 64 return analogin_read(&_adc);
MikamiUitOpen 0:3e46577dc273 65 }
MikamiUitOpen 0:3e46577dc273 66
MikamiUitOpen 0:3e46577dc273 67 /** Read the input voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
MikamiUitOpen 0:3e46577dc273 68 *
MikamiUitOpen 0:3e46577dc273 69 * @returns
MikamiUitOpen 0:3e46577dc273 70 * 16-bit unsigned short representing the current input voltage, normalised to a 16-bit value
MikamiUitOpen 0:3e46577dc273 71 */
MikamiUitOpen 0:3e46577dc273 72 unsigned short read_u16() {
MikamiUitOpen 0:3e46577dc273 73 return analogin_read_u16(&_adc);
MikamiUitOpen 0:3e46577dc273 74 }
MikamiUitOpen 0:3e46577dc273 75
MikamiUitOpen 0:3e46577dc273 76 #ifdef MBED_OPERATORS
MikamiUitOpen 0:3e46577dc273 77 /** An operator shorthand for read()
MikamiUitOpen 0:3e46577dc273 78 *
MikamiUitOpen 0:3e46577dc273 79 * The float() operator can be used as a shorthand for read() to simplify common code sequences
MikamiUitOpen 0:3e46577dc273 80 *
MikamiUitOpen 0:3e46577dc273 81 * Example:
MikamiUitOpen 0:3e46577dc273 82 * @code
MikamiUitOpen 0:3e46577dc273 83 * float x = volume.read();
MikamiUitOpen 0:3e46577dc273 84 * float x = volume;
MikamiUitOpen 0:3e46577dc273 85 *
MikamiUitOpen 0:3e46577dc273 86 * if(volume.read() > 0.25) { ... }
MikamiUitOpen 0:3e46577dc273 87 * if(volume > 0.25) { ... }
MikamiUitOpen 0:3e46577dc273 88 * @endcode
MikamiUitOpen 0:3e46577dc273 89 */
MikamiUitOpen 0:3e46577dc273 90 operator float() {
MikamiUitOpen 0:3e46577dc273 91 return read();
MikamiUitOpen 0:3e46577dc273 92 }
MikamiUitOpen 0:3e46577dc273 93 #endif
MikamiUitOpen 0:3e46577dc273 94
MikamiUitOpen 0:3e46577dc273 95 protected:
MikamiUitOpen 0:3e46577dc273 96 analogin_t _adc;
MikamiUitOpen 0:3e46577dc273 97 };
MikamiUitOpen 0:3e46577dc273 98
MikamiUitOpen 0:3e46577dc273 99 } // namespace mbed
MikamiUitOpen 0:3e46577dc273 100
MikamiUitOpen 0:3e46577dc273 101 #endif
MikamiUitOpen 0:3e46577dc273 102
MikamiUitOpen 0:3e46577dc273 103 #endif