George Roussos / BLE_Temperature

BLE temperature profile using digital DS1820 or analog LM35 sensors

Dependencies:   DS1820

mbed/AnalogIn.h@0:637031152314, 2015-03-07 (annotated)

Committer:
gkroussos
Date:
Sat Mar 07 16:23:41 2015 +0000
Revision:
0:637031152314
Working version 1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gkroussos 0:637031152314 1 /* mbed Microcontroller Library
gkroussos 0:637031152314 2 * Copyright (c) 2006-2013 ARM Limited
gkroussos 0:637031152314 3 *
gkroussos 0:637031152314 4 * Licensed under the Apache License, Version 2.0 (the "License");
gkroussos 0:637031152314 5 * you may not use this file except in compliance with the License.
gkroussos 0:637031152314 6 * You may obtain a copy of the License at
gkroussos 0:637031152314 7 *
gkroussos 0:637031152314 8 * http://www.apache.org/licenses/LICENSE-2.0
gkroussos 0:637031152314 9 *
gkroussos 0:637031152314 10 * Unless required by applicable law or agreed to in writing, software
gkroussos 0:637031152314 11 * distributed under the License is distributed on an "AS IS" BASIS,
gkroussos 0:637031152314 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
gkroussos 0:637031152314 13 * See the License for the specific language governing permissions and
gkroussos 0:637031152314 14 * limitations under the License.
gkroussos 0:637031152314 15 */
gkroussos 0:637031152314 16 #ifndef MBED_ANALOGIN_H
gkroussos 0:637031152314 17 #define MBED_ANALOGIN_H
gkroussos 0:637031152314 18
gkroussos 0:637031152314 19 #include "platform.h"
gkroussos 0:637031152314 20
gkroussos 0:637031152314 21 #if DEVICE_ANALOGIN
gkroussos 0:637031152314 22
gkroussos 0:637031152314 23 #include "analogin_api.h"
gkroussos 0:637031152314 24
gkroussos 0:637031152314 25 namespace mbed {
gkroussos 0:637031152314 26
gkroussos 0:637031152314 27 /** An analog input, used for reading the voltage on a pin
gkroussos 0:637031152314 28 *
gkroussos 0:637031152314 29 * Example:
gkroussos 0:637031152314 30 * @code
gkroussos 0:637031152314 31 * // Print messages when the AnalogIn is greater than 50%
gkroussos 0:637031152314 32 *
gkroussos 0:637031152314 33 * #include "mbed.h"
gkroussos 0:637031152314 34 *
gkroussos 0:637031152314 35 * AnalogIn temperature(p20);
gkroussos 0:637031152314 36 *
gkroussos 0:637031152314 37 * int main() {
gkroussos 0:637031152314 38 * while(1) {
gkroussos 0:637031152314 39 * if(temperature > 0.5) {
gkroussos 0:637031152314 40 * printf("Too hot! (%f)", temperature.read());
gkroussos 0:637031152314 41 * }
gkroussos 0:637031152314 42 * }
gkroussos 0:637031152314 43 * }
gkroussos 0:637031152314 44 * @endcode
gkroussos 0:637031152314 45 */
gkroussos 0:637031152314 46 class AnalogIn {
gkroussos 0:637031152314 47
gkroussos 0:637031152314 48 public:
gkroussos 0:637031152314 49
gkroussos 0:637031152314 50 /** Create an AnalogIn, connected to the specified pin
gkroussos 0:637031152314 51 *
gkroussos 0:637031152314 52 * @param pin AnalogIn pin to connect to
gkroussos 0:637031152314 53 * @param name (optional) A string to identify the object
gkroussos 0:637031152314 54 */
gkroussos 0:637031152314 55 AnalogIn(PinName pin) {
gkroussos 0:637031152314 56 analogin_init(&_adc, pin);
gkroussos 0:637031152314 57 }
gkroussos 0:637031152314 58
gkroussos 0:637031152314 59 /** Read the input voltage, represented as a float in the range [0.0, 1.0]
gkroussos 0:637031152314 60 *
gkroussos 0:637031152314 61 * @returns A floating-point value representing the current input voltage, measured as a percentage
gkroussos 0:637031152314 62 */
gkroussos 0:637031152314 63 float read() {
gkroussos 0:637031152314 64 return analogin_read(&_adc);
gkroussos 0:637031152314 65 }
gkroussos 0:637031152314 66
gkroussos 0:637031152314 67 /** Read the input voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
gkroussos 0:637031152314 68 *
gkroussos 0:637031152314 69 * @returns
gkroussos 0:637031152314 70 * 16-bit unsigned short representing the current input voltage, normalised to a 16-bit value
gkroussos 0:637031152314 71 */
gkroussos 0:637031152314 72 unsigned short read_u16() {
gkroussos 0:637031152314 73 return analogin_read_u16(&_adc);
gkroussos 0:637031152314 74 }
gkroussos 0:637031152314 75
gkroussos 0:637031152314 76 #ifdef MBED_OPERATORS
gkroussos 0:637031152314 77 /** An operator shorthand for read()
gkroussos 0:637031152314 78 *
gkroussos 0:637031152314 79 * The float() operator can be used as a shorthand for read() to simplify common code sequences
gkroussos 0:637031152314 80 *
gkroussos 0:637031152314 81 * Example:
gkroussos 0:637031152314 82 * @code
gkroussos 0:637031152314 83 * float x = volume.read();
gkroussos 0:637031152314 84 * float x = volume;
gkroussos 0:637031152314 85 *
gkroussos 0:637031152314 86 * if(volume.read() > 0.25) { ... }
gkroussos 0:637031152314 87 * if(volume > 0.25) { ... }
gkroussos 0:637031152314 88 * @endcode
gkroussos 0:637031152314 89 */
gkroussos 0:637031152314 90 operator float() {
gkroussos 0:637031152314 91 return read();
gkroussos 0:637031152314 92 }
gkroussos 0:637031152314 93 #endif
gkroussos 0:637031152314 94
gkroussos 0:637031152314 95 protected:
gkroussos 0:637031152314 96 analogin_t _adc;
gkroussos 0:637031152314 97 };
gkroussos 0:637031152314 98
gkroussos 0:637031152314 99 } // namespace mbed
gkroussos 0:637031152314 100
gkroussos 0:637031152314 101 #endif
gkroussos 0:637031152314 102
gkroussos 0:637031152314 103 #endif