Mark Gottscho / SensorsLib

A compilation of some hardware sensors and their shared programming interfaces.

TouchSensor.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?

UserRevisionLine numberNew contents of line
mgottscho 0:8d34cc2ff388 1 /* TouchSensor.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 "TouchSensor.h"
mgottscho 0:8d34cc2ff388 9 #include "PeriodicSensor.h"
mgottscho 0:8d34cc2ff388 10
mgottscho 0:8d34cc2ff388 11 TouchSensor::TouchSensor() :
mgottscho 0:8d34cc2ff388 12 PeriodicSensor(0.005), //default min sampling rate of 200 Hz
mgottscho 0:8d34cc2ff388 13 __sensor(),
mgottscho 0:8d34cc2ff388 14 __distance(0),
mgottscho 0:8d34cc2ff388 15 __percentage(0)
mgottscho 0:8d34cc2ff388 16 {
mgottscho 0:8d34cc2ff388 17 }
mgottscho 0:8d34cc2ff388 18
mgottscho 0:8d34cc2ff388 19 TouchSensor::~TouchSensor() { }
mgottscho 0:8d34cc2ff388 20
mgottscho 0:8d34cc2ff388 21 float TouchSensor::getPercentage(bool sampleNow) {
mgottscho 0:8d34cc2ff388 22 __disable_irq();
mgottscho 0:8d34cc2ff388 23 if (sampleNow) {
mgottscho 0:8d34cc2ff388 24 __percentage = __sensor.readPercentage();
mgottscho 0:8d34cc2ff388 25 }
mgottscho 0:8d34cc2ff388 26
mgottscho 0:8d34cc2ff388 27 __dataReady = false;
mgottscho 0:8d34cc2ff388 28 __enable_irq();
mgottscho 0:8d34cc2ff388 29
mgottscho 0:8d34cc2ff388 30 return __percentage;
mgottscho 0:8d34cc2ff388 31 }
mgottscho 0:8d34cc2ff388 32
mgottscho 0:8d34cc2ff388 33 uint8_t TouchSensor::getDistance(bool sampleNow) {
mgottscho 0:8d34cc2ff388 34 __disable_irq();
mgottscho 0:8d34cc2ff388 35 if (sampleNow) {
mgottscho 0:8d34cc2ff388 36 __distance = __sensor.readDistance();
mgottscho 0:8d34cc2ff388 37 }
mgottscho 0:8d34cc2ff388 38
mgottscho 0:8d34cc2ff388 39 __dataReady = false;
mgottscho 0:8d34cc2ff388 40 __enable_irq();
mgottscho 0:8d34cc2ff388 41
mgottscho 0:8d34cc2ff388 42 return __distance;
mgottscho 0:8d34cc2ff388 43 }
mgottscho 0:8d34cc2ff388 44
mgottscho 0:8d34cc2ff388 45 void TouchSensor::__sample_data_ISR() {
mgottscho 0:8d34cc2ff388 46 getDistance(true);
mgottscho 0:8d34cc2ff388 47 getPercentage(true);
mgottscho 0:8d34cc2ff388 48 __dataReady = true;
mgottscho 0:8d34cc2ff388 49 }