A compilation of some hardware sensors and their shared programming interfaces.
ADCSensor.cpp@1:15396cab58d1, 2014-03-19 (annotated)
- Committer:
- mgottscho
- Date:
- Wed Mar 19 00:35:31 2014 +0000
- Revision:
- 1:15396cab58d1
- Parent:
- 0:8d34cc2ff388
Updated for most recent UtilityLib.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mgottscho | 0:8d34cc2ff388 | 1 | /* ADCSensor.cpp |
mgottscho | 0:8d34cc2ff388 | 2 | * Tested with mbed board: FRDM-KL46Z |
mgottscho | 0:8d34cc2ff388 | 3 | * Author: Mark Gottscho |
mgottscho | 0:8d34cc2ff388 | 4 | * mgottscho@ucla.edu |
mgottscho | 0:8d34cc2ff388 | 5 | */ |
mgottscho | 0:8d34cc2ff388 | 6 | |
mgottscho | 0:8d34cc2ff388 | 7 | #include "mbed.h" |
mgottscho | 0:8d34cc2ff388 | 8 | #include "ADCSensor.h" |
mgottscho | 0:8d34cc2ff388 | 9 | #include "PeriodicSensor.h" |
mgottscho | 0:8d34cc2ff388 | 10 | |
mgottscho | 0:8d34cc2ff388 | 11 | ADCSensor::ADCSensor(PinName adc_pin) : |
mgottscho | 0:8d34cc2ff388 | 12 | PeriodicSensor(0.005), //default max sampling rate of 200Hz |
mgottscho | 0:8d34cc2ff388 | 13 | __adc(adc_pin), |
mgottscho | 0:8d34cc2ff388 | 14 | __data(0) |
mgottscho | 0:8d34cc2ff388 | 15 | { |
mgottscho | 0:8d34cc2ff388 | 16 | } |
mgottscho | 0:8d34cc2ff388 | 17 | |
mgottscho | 0:8d34cc2ff388 | 18 | ADCSensor::~ADCSensor() { } |
mgottscho | 0:8d34cc2ff388 | 19 | |
mgottscho | 0:8d34cc2ff388 | 20 | uint16_t ADCSensor::getSample(bool sampleNow) { |
mgottscho | 0:8d34cc2ff388 | 21 | __disable_irq(); |
mgottscho | 0:8d34cc2ff388 | 22 | if (sampleNow) { |
mgottscho | 0:8d34cc2ff388 | 23 | __data = __adc.read_u16(); |
mgottscho | 0:8d34cc2ff388 | 24 | } |
mgottscho | 0:8d34cc2ff388 | 25 | |
mgottscho | 0:8d34cc2ff388 | 26 | __dataReady = false; |
mgottscho | 0:8d34cc2ff388 | 27 | __enable_irq(); |
mgottscho | 0:8d34cc2ff388 | 28 | |
mgottscho | 0:8d34cc2ff388 | 29 | return __data; |
mgottscho | 0:8d34cc2ff388 | 30 | } |
mgottscho | 0:8d34cc2ff388 | 31 | |
mgottscho | 0:8d34cc2ff388 | 32 | float ADCSensor::getSampleFloat(bool sampleNow) { |
mgottscho | 0:8d34cc2ff388 | 33 | return getSample(sampleNow) * ADC_DIV; |
mgottscho | 0:8d34cc2ff388 | 34 | } |
mgottscho | 0:8d34cc2ff388 | 35 | |
mgottscho | 0:8d34cc2ff388 | 36 | void ADCSensor::__sample_data_ISR() { |
mgottscho | 0:8d34cc2ff388 | 37 | getSample(true); |
mgottscho | 0:8d34cc2ff388 | 38 | __dataReady = true; |
mgottscho | 0:8d34cc2ff388 | 39 | } |