Jerry Roletter / HomeMon

Library for my home monitoring classes and serial communication protocol. It monitors temperature and movement on the mbed application board.

Dependents:   FinalProject

Temperature/Temperature.cpp@0:3f846fc933a2, 2013-09-01 (annotated)

Committer:
groletter
Date:
Sun Sep 01 23:35:18 2013 +0000
Revision:
0:3f846fc933a2
Child:
1:2f5a62eb52ad
My library for temperature and motion monitoring and communication over a USB Serial device.  Requires host-side code.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
groletter 0:3f846fc933a2 1 //
groletter 0:3f846fc933a2 2 // This file contains function related to the temperature
groletter 0:3f846fc933a2 3 // control of the home monitoring system
groletter 0:3f846fc933a2 4 //
groletter 0:3f846fc933a2 5
groletter 0:3f846fc933a2 6 #include "Temperature.h"
groletter 0:3f846fc933a2 7 #include "HomeMonUtils.h"
groletter 0:3f846fc933a2 8 #include <vector>
groletter 0:3f846fc933a2 9 #include <string>
groletter 0:3f846fc933a2 10 #include <sstream>
groletter 0:3f846fc933a2 11
groletter 0:3f846fc933a2 12 // FIXME - add timestamp to temperature samples
groletter 0:3f846fc933a2 13
groletter 0:3f846fc933a2 14 Temperature::Temperature() {
groletter 0:3f846fc933a2 15 max_temp_limit = 150.0; // Maximum allowed value
groletter 0:3f846fc933a2 16 min_temp_limit = -150.00; // Minimum allowed value
groletter 0:3f846fc933a2 17 max_samples_limit = 100; // Maximum of 100 samples in buffer
groletter 0:3f846fc933a2 18 period_limit = 0.1; // No faster than 1/10th of a second
groletter 0:3f846fc933a2 19 min_temp = 80.0; // Farenheit
groletter 0:3f846fc933a2 20 max_temp = 86.0; // Farenheit
groletter 0:3f846fc933a2 21 temp_sample_period = 10.0; // seconds
groletter 0:3f846fc933a2 22 max_samples = 20;
groletter 0:3f846fc933a2 23 sample_ptr = 0;
groletter 0:3f846fc933a2 24 wrapped_once = false;
groletter 0:3f846fc933a2 25 // WARNING - width is important here, must be 7 characters!
groletter 0:3f846fc933a2 26 temp_samples.resize(max_samples,"0.00000");
groletter 0:3f846fc933a2 27 }
groletter 0:3f846fc933a2 28
groletter 0:3f846fc933a2 29 bool Temperature::change_max_samples(int num_samples) {
groletter 0:3f846fc933a2 30 // WARNING - setting this dumps all saved data!
groletter 0:3f846fc933a2 31 if (num_samples > 0 && num_samples <= max_samples_limit) {
groletter 0:3f846fc933a2 32 max_samples = num_samples;
groletter 0:3f846fc933a2 33 // WARNING - width is important here, must be 7 characters!
groletter 0:3f846fc933a2 34 temp_samples.resize(max_samples, "0.00000");
groletter 0:3f846fc933a2 35 return true;
groletter 0:3f846fc933a2 36 }
groletter 0:3f846fc933a2 37 else {
groletter 0:3f846fc933a2 38 return false;
groletter 0:3f846fc933a2 39 }
groletter 0:3f846fc933a2 40 }
groletter 0:3f846fc933a2 41
groletter 0:3f846fc933a2 42 void Temperature::add_sample(double sample) {
groletter 0:3f846fc933a2 43
groletter 0:3f846fc933a2 44 std::string str_sample;
groletter 0:3f846fc933a2 45 convert_sample(sample, str_sample);
groletter 0:3f846fc933a2 46 if (sample_ptr == max_samples) {
groletter 0:3f846fc933a2 47 wrapped_once = true;
groletter 0:3f846fc933a2 48 sample_ptr = 0;
groletter 0:3f846fc933a2 49 temp_samples[sample_ptr] = str_sample;
groletter 0:3f846fc933a2 50 }
groletter 0:3f846fc933a2 51 else {
groletter 0:3f846fc933a2 52 temp_samples[sample_ptr++] = str_sample;
groletter 0:3f846fc933a2 53 }
groletter 0:3f846fc933a2 54 }
groletter 0:3f846fc933a2 55
groletter 0:3f846fc933a2 56 bool Temperature::set_period(double period) {
groletter 0:3f846fc933a2 57 // Only 7 digits max allowed in a number so make
groletter 0:3f846fc933a2 58 // sure period fits in that limit. String sent to
groletter 0:3f846fc933a2 59 // host will be rounded to 7 digits before transmission
groletter 0:3f846fc933a2 60 if (period > period_limit && period < 999999.99) {
groletter 0:3f846fc933a2 61 temp_sample_period = period;
groletter 0:3f846fc933a2 62 return true;
groletter 0:3f846fc933a2 63 }
groletter 0:3f846fc933a2 64 else {
groletter 0:3f846fc933a2 65 return false;
groletter 0:3f846fc933a2 66 }
groletter 0:3f846fc933a2 67 }
groletter 0:3f846fc933a2 68
groletter 0:3f846fc933a2 69 bool Temperature::set_min(double min) {
groletter 0:3f846fc933a2 70 if (min > max_temp_limit || min < min_temp_limit || min > max_temp_limit) {
groletter 0:3f846fc933a2 71 return false;
groletter 0:3f846fc933a2 72 }
groletter 0:3f846fc933a2 73 else {
groletter 0:3f846fc933a2 74 min_temp = min;
groletter 0:3f846fc933a2 75 return true;
groletter 0:3f846fc933a2 76 }
groletter 0:3f846fc933a2 77 }
groletter 0:3f846fc933a2 78
groletter 0:3f846fc933a2 79 bool Temperature::set_max(double max) {
groletter 0:3f846fc933a2 80 if (max > max_temp_limit || max < min_temp_limit || max < min_temp) {
groletter 0:3f846fc933a2 81 return false;
groletter 0:3f846fc933a2 82 }
groletter 0:3f846fc933a2 83 else {
groletter 0:3f846fc933a2 84 max_temp = max;
groletter 0:3f846fc933a2 85 return true;
groletter 0:3f846fc933a2 86 }
groletter 0:3f846fc933a2 87 }
groletter 0:3f846fc933a2 88
groletter 0:3f846fc933a2 89 double Temperature::get_min(void) {
groletter 0:3f846fc933a2 90 return min_temp;
groletter 0:3f846fc933a2 91 }
groletter 0:3f846fc933a2 92
groletter 0:3f846fc933a2 93 double Temperature::get_max(void) {
groletter 0:3f846fc933a2 94 return max_temp;
groletter 0:3f846fc933a2 95 }
groletter 0:3f846fc933a2 96
groletter 0:3f846fc933a2 97 double Temperature:: get_period() {
groletter 0:3f846fc933a2 98 return temp_sample_period;
groletter 0:3f846fc933a2 99 }
groletter 0:3f846fc933a2 100
groletter 0:3f846fc933a2 101 int Temperature::get_max_samples() {
groletter 0:3f846fc933a2 102 return max_samples;
groletter 0:3f846fc933a2 103 }
groletter 0:3f846fc933a2 104
groletter 0:3f846fc933a2 105 const std::vector<std::string> &Temperature::get_samples(void) {
groletter 0:3f846fc933a2 106 // FIXME - need to copy out samples in order of oldest
groletter 0:3f846fc933a2 107 // to newest or maybe not if change to contain timestamp
groletter 0:3f846fc933a2 108 // and let the host worry about adding it. If use multi-map
groletter 0:3f846fc933a2 109 // it would be sorted automatically. Maybe a better idea.
groletter 0:3f846fc933a2 110 return temp_samples;
groletter 0:3f846fc933a2 111 }
groletter 0:3f846fc933a2 112