Tamura Mizuki / STM32F746_FFT

fft

Dependencies:   BSP_DISCO_F746NG SDFileSystem_Warning_Fixed

mbed_src_STM32F7/api/AnalogOut.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?

UserRevisionLine numberNew contents of line
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_ANALOGOUT_H
MikamiUitOpen 0:3e46577dc273 17 #define MBED_ANALOGOUT_H
MikamiUitOpen 0:3e46577dc273 18
MikamiUitOpen 0:3e46577dc273 19 #include "platform.h"
MikamiUitOpen 0:3e46577dc273 20
MikamiUitOpen 0:3e46577dc273 21 #if DEVICE_ANALOGOUT
MikamiUitOpen 0:3e46577dc273 22
MikamiUitOpen 0:3e46577dc273 23 #include "analogout_api.h"
MikamiUitOpen 0:3e46577dc273 24
MikamiUitOpen 0:3e46577dc273 25 namespace mbed {
MikamiUitOpen 0:3e46577dc273 26
MikamiUitOpen 0:3e46577dc273 27 /** An analog output, used for setting the voltage on a pin
MikamiUitOpen 0:3e46577dc273 28 *
MikamiUitOpen 0:3e46577dc273 29 * Example:
MikamiUitOpen 0:3e46577dc273 30 * @code
MikamiUitOpen 0:3e46577dc273 31 * // Make a sawtooth output
MikamiUitOpen 0:3e46577dc273 32 *
MikamiUitOpen 0:3e46577dc273 33 * #include "mbed.h"
MikamiUitOpen 0:3e46577dc273 34 *
MikamiUitOpen 0:3e46577dc273 35 * AnalogOut tri(p18);
MikamiUitOpen 0:3e46577dc273 36 * int main() {
MikamiUitOpen 0:3e46577dc273 37 * while(1) {
MikamiUitOpen 0:3e46577dc273 38 * tri = tri + 0.01;
MikamiUitOpen 0:3e46577dc273 39 * wait_us(1);
MikamiUitOpen 0:3e46577dc273 40 * if(tri == 1) {
MikamiUitOpen 0:3e46577dc273 41 * tri = 0;
MikamiUitOpen 0:3e46577dc273 42 * }
MikamiUitOpen 0:3e46577dc273 43 * }
MikamiUitOpen 0:3e46577dc273 44 * }
MikamiUitOpen 0:3e46577dc273 45 * @endcode
MikamiUitOpen 0:3e46577dc273 46 */
MikamiUitOpen 0:3e46577dc273 47 class AnalogOut {
MikamiUitOpen 0:3e46577dc273 48
MikamiUitOpen 0:3e46577dc273 49 public:
MikamiUitOpen 0:3e46577dc273 50
MikamiUitOpen 0:3e46577dc273 51 /** Create an AnalogOut connected to the specified pin
MikamiUitOpen 0:3e46577dc273 52 *
MikamiUitOpen 0:3e46577dc273 53 * @param AnalogOut pin to connect to (18)
MikamiUitOpen 0:3e46577dc273 54 */
MikamiUitOpen 0:3e46577dc273 55 AnalogOut(PinName pin) {
MikamiUitOpen 0:3e46577dc273 56 analogout_init(&_dac, pin);
MikamiUitOpen 0:3e46577dc273 57 }
MikamiUitOpen 0:3e46577dc273 58
MikamiUitOpen 0:3e46577dc273 59 /** Set the output voltage, specified as a percentage (float)
MikamiUitOpen 0:3e46577dc273 60 *
MikamiUitOpen 0:3e46577dc273 61 * @param value A floating-point value representing the output voltage,
MikamiUitOpen 0:3e46577dc273 62 * specified as a percentage. The value should lie between
MikamiUitOpen 0:3e46577dc273 63 * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
MikamiUitOpen 0:3e46577dc273 64 * Values outside this range will be saturated to 0.0f or 1.0f.
MikamiUitOpen 0:3e46577dc273 65 */
MikamiUitOpen 0:3e46577dc273 66 void write(float value) {
MikamiUitOpen 0:3e46577dc273 67 analogout_write(&_dac, value);
MikamiUitOpen 0:3e46577dc273 68 }
MikamiUitOpen 0:3e46577dc273 69
MikamiUitOpen 0:3e46577dc273 70 /** Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
MikamiUitOpen 0:3e46577dc273 71 *
MikamiUitOpen 0:3e46577dc273 72 * @param value 16-bit unsigned short representing the output voltage,
MikamiUitOpen 0:3e46577dc273 73 * normalised to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v)
MikamiUitOpen 0:3e46577dc273 74 */
MikamiUitOpen 0:3e46577dc273 75 void write_u16(unsigned short value) {
MikamiUitOpen 0:3e46577dc273 76 analogout_write_u16(&_dac, value);
MikamiUitOpen 0:3e46577dc273 77 }
MikamiUitOpen 0:3e46577dc273 78
MikamiUitOpen 0:3e46577dc273 79 /** Return the current output voltage setting, measured as a percentage (float)
MikamiUitOpen 0:3e46577dc273 80 *
MikamiUitOpen 0:3e46577dc273 81 * @returns
MikamiUitOpen 0:3e46577dc273 82 * A floating-point value representing the current voltage being output on the pin,
MikamiUitOpen 0:3e46577dc273 83 * measured as a percentage. The returned value will lie between
MikamiUitOpen 0:3e46577dc273 84 * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
MikamiUitOpen 0:3e46577dc273 85 *
MikamiUitOpen 0:3e46577dc273 86 * @note
MikamiUitOpen 0:3e46577dc273 87 * This value may not match exactly the value set by a previous write().
MikamiUitOpen 0:3e46577dc273 88 */
MikamiUitOpen 0:3e46577dc273 89 float read() {
MikamiUitOpen 0:3e46577dc273 90 return analogout_read(&_dac);
MikamiUitOpen 0:3e46577dc273 91 }
MikamiUitOpen 0:3e46577dc273 92
MikamiUitOpen 0:3e46577dc273 93 #ifdef MBED_OPERATORS
MikamiUitOpen 0:3e46577dc273 94 /** An operator shorthand for write()
MikamiUitOpen 0:3e46577dc273 95 */
MikamiUitOpen 0:3e46577dc273 96 AnalogOut& operator= (float percent) {
MikamiUitOpen 0:3e46577dc273 97 write(percent);
MikamiUitOpen 0:3e46577dc273 98 return *this;
MikamiUitOpen 0:3e46577dc273 99 }
MikamiUitOpen 0:3e46577dc273 100
MikamiUitOpen 0:3e46577dc273 101 AnalogOut& operator= (AnalogOut& rhs) {
MikamiUitOpen 0:3e46577dc273 102 write(rhs.read());
MikamiUitOpen 0:3e46577dc273 103 return *this;
MikamiUitOpen 0:3e46577dc273 104 }
MikamiUitOpen 0:3e46577dc273 105
MikamiUitOpen 0:3e46577dc273 106 /** An operator shorthand for read()
MikamiUitOpen 0:3e46577dc273 107 */
MikamiUitOpen 0:3e46577dc273 108 operator float() {
MikamiUitOpen 0:3e46577dc273 109 return read();
MikamiUitOpen 0:3e46577dc273 110 }
MikamiUitOpen 0:3e46577dc273 111 #endif
MikamiUitOpen 0:3e46577dc273 112
MikamiUitOpen 0:3e46577dc273 113 protected:
MikamiUitOpen 0:3e46577dc273 114 dac_t _dac;
MikamiUitOpen 0:3e46577dc273 115 };
MikamiUitOpen 0:3e46577dc273 116
MikamiUitOpen 0:3e46577dc273 117 } // namespace mbed
MikamiUitOpen 0:3e46577dc273 118
MikamiUitOpen 0:3e46577dc273 119 #endif
MikamiUitOpen 0:3e46577dc273 120
MikamiUitOpen 0:3e46577dc273 121 #endif