Mark Turner / Mbed 2 deprecated lightsense_kl46z_basic_v1

Basic fading in and out of leds with light sensor.

Dependencies:   mbed

mbed/AnalogOut.h@0:cf7af2656659, 2016-09-19 (annotated)

Committer:
mturner5
Date:
Mon Sep 19 03:24:58 2016 +0000
Revision:
0:cf7af2656659
Basic v1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mturner5 0:cf7af2656659 1 /* mbed Microcontroller Library
mturner5 0:cf7af2656659 2 * Copyright (c) 2006-2013 ARM Limited
mturner5 0:cf7af2656659 3 *
mturner5 0:cf7af2656659 4 * Licensed under the Apache License, Version 2.0 (the "License");
mturner5 0:cf7af2656659 5 * you may not use this file except in compliance with the License.
mturner5 0:cf7af2656659 6 * You may obtain a copy of the License at
mturner5 0:cf7af2656659 7 *
mturner5 0:cf7af2656659 8 * http://www.apache.org/licenses/LICENSE-2.0
mturner5 0:cf7af2656659 9 *
mturner5 0:cf7af2656659 10 * Unless required by applicable law or agreed to in writing, software
mturner5 0:cf7af2656659 11 * distributed under the License is distributed on an "AS IS" BASIS,
mturner5 0:cf7af2656659 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mturner5 0:cf7af2656659 13 * See the License for the specific language governing permissions and
mturner5 0:cf7af2656659 14 * limitations under the License.
mturner5 0:cf7af2656659 15 */
mturner5 0:cf7af2656659 16 #ifndef MBED_ANALOGOUT_H
mturner5 0:cf7af2656659 17 #define MBED_ANALOGOUT_H
mturner5 0:cf7af2656659 18
mturner5 0:cf7af2656659 19 #include "platform.h"
mturner5 0:cf7af2656659 20
mturner5 0:cf7af2656659 21 #if DEVICE_ANALOGOUT
mturner5 0:cf7af2656659 22
mturner5 0:cf7af2656659 23 #include "analogout_api.h"
mturner5 0:cf7af2656659 24
mturner5 0:cf7af2656659 25 namespace mbed {
mturner5 0:cf7af2656659 26
mturner5 0:cf7af2656659 27 /** An analog output, used for setting the voltage on a pin
mturner5 0:cf7af2656659 28 *
mturner5 0:cf7af2656659 29 * Example:
mturner5 0:cf7af2656659 30 * @code
mturner5 0:cf7af2656659 31 * // Make a sawtooth output
mturner5 0:cf7af2656659 32 *
mturner5 0:cf7af2656659 33 * #include "mbed.h"
mturner5 0:cf7af2656659 34 *
mturner5 0:cf7af2656659 35 * AnalogOut tri(p18);
mturner5 0:cf7af2656659 36 * int main() {
mturner5 0:cf7af2656659 37 * while(1) {
mturner5 0:cf7af2656659 38 * tri = tri + 0.01;
mturner5 0:cf7af2656659 39 * wait_us(1);
mturner5 0:cf7af2656659 40 * if(tri == 1) {
mturner5 0:cf7af2656659 41 * tri = 0;
mturner5 0:cf7af2656659 42 * }
mturner5 0:cf7af2656659 43 * }
mturner5 0:cf7af2656659 44 * }
mturner5 0:cf7af2656659 45 * @endcode
mturner5 0:cf7af2656659 46 */
mturner5 0:cf7af2656659 47 class AnalogOut {
mturner5 0:cf7af2656659 48
mturner5 0:cf7af2656659 49 public:
mturner5 0:cf7af2656659 50
mturner5 0:cf7af2656659 51 /** Create an AnalogOut connected to the specified pin
mturner5 0:cf7af2656659 52 *
mturner5 0:cf7af2656659 53 * @param AnalogOut pin to connect to (18)
mturner5 0:cf7af2656659 54 */
mturner5 0:cf7af2656659 55 AnalogOut(PinName pin) {
mturner5 0:cf7af2656659 56 analogout_init(&_dac, pin);
mturner5 0:cf7af2656659 57 }
mturner5 0:cf7af2656659 58
mturner5 0:cf7af2656659 59 /** Set the output voltage, specified as a percentage (float)
mturner5 0:cf7af2656659 60 *
mturner5 0:cf7af2656659 61 * @param value A floating-point value representing the output voltage,
mturner5 0:cf7af2656659 62 * specified as a percentage. The value should lie between
mturner5 0:cf7af2656659 63 * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
mturner5 0:cf7af2656659 64 * Values outside this range will be saturated to 0.0f or 1.0f.
mturner5 0:cf7af2656659 65 */
mturner5 0:cf7af2656659 66 void write(float value) {
mturner5 0:cf7af2656659 67 analogout_write(&_dac, value);
mturner5 0:cf7af2656659 68 }
mturner5 0:cf7af2656659 69
mturner5 0:cf7af2656659 70 /** Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
mturner5 0:cf7af2656659 71 *
mturner5 0:cf7af2656659 72 * @param value 16-bit unsigned short representing the output voltage,
mturner5 0:cf7af2656659 73 * normalised to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v)
mturner5 0:cf7af2656659 74 */
mturner5 0:cf7af2656659 75 void write_u16(unsigned short value) {
mturner5 0:cf7af2656659 76 analogout_write_u16(&_dac, value);
mturner5 0:cf7af2656659 77 }
mturner5 0:cf7af2656659 78
mturner5 0:cf7af2656659 79 /** Return the current output voltage setting, measured as a percentage (float)
mturner5 0:cf7af2656659 80 *
mturner5 0:cf7af2656659 81 * @returns
mturner5 0:cf7af2656659 82 * A floating-point value representing the current voltage being output on the pin,
mturner5 0:cf7af2656659 83 * measured as a percentage. The returned value will lie between
mturner5 0:cf7af2656659 84 * 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
mturner5 0:cf7af2656659 85 *
mturner5 0:cf7af2656659 86 * @note
mturner5 0:cf7af2656659 87 * This value may not match exactly the value set by a previous write().
mturner5 0:cf7af2656659 88 */
mturner5 0:cf7af2656659 89 float read() {
mturner5 0:cf7af2656659 90 return analogout_read(&_dac);
mturner5 0:cf7af2656659 91 }
mturner5 0:cf7af2656659 92
mturner5 0:cf7af2656659 93 #ifdef MBED_OPERATORS
mturner5 0:cf7af2656659 94 /** An operator shorthand for write()
mturner5 0:cf7af2656659 95 */
mturner5 0:cf7af2656659 96 AnalogOut& operator= (float percent) {
mturner5 0:cf7af2656659 97 write(percent);
mturner5 0:cf7af2656659 98 return *this;
mturner5 0:cf7af2656659 99 }
mturner5 0:cf7af2656659 100
mturner5 0:cf7af2656659 101 AnalogOut& operator= (AnalogOut& rhs) {
mturner5 0:cf7af2656659 102 write(rhs.read());
mturner5 0:cf7af2656659 103 return *this;
mturner5 0:cf7af2656659 104 }
mturner5 0:cf7af2656659 105
mturner5 0:cf7af2656659 106 /** An operator shorthand for read()
mturner5 0:cf7af2656659 107 */
mturner5 0:cf7af2656659 108 operator float() {
mturner5 0:cf7af2656659 109 return read();
mturner5 0:cf7af2656659 110 }
mturner5 0:cf7af2656659 111 #endif
mturner5 0:cf7af2656659 112
mturner5 0:cf7af2656659 113 protected:
mturner5 0:cf7af2656659 114 dac_t _dac;
mturner5 0:cf7af2656659 115 };
mturner5 0:cf7af2656659 116
mturner5 0:cf7af2656659 117 } // namespace mbed
mturner5 0:cf7af2656659 118
mturner5 0:cf7af2656659 119 #endif
mturner5 0:cf7af2656659 120
mturner5 0:cf7af2656659 121 #endif