This program is an advanced "IoT" thermometer using LM75B component library. It displays the current value to the Serial host in Celcius or Fahrenheit (possible to change using a switch). It also stores an historic and displays it to the user using the LCD screen. Moreover, you can change the orientation of the screen by turning the device, just like a smartphone.
Dependencies: C12832 FXOS8700CQ LM75B mbed
ThermalDisplayer.cpp
- Committer:
- co838_gtvl2
- Date:
- 2016-02-10
- Revision:
- 2:5d0c209e5c61
- Parent:
- 1:06713d1b69cf
- Child:
- 3:a4dac093a968
File content as of revision 2:5d0c209e5c61:
#include "ThermalDisplayer.h" /* * Constructor, initialize Potentiometer, LCD and variables */ ThermalDisplayer::ThermalDisplayer(): pot(A1) { this->lcd = new C12832(D11, D13, D12, D7, D10); this->temperatures = std::list<float>(MAX_SIZE); this->minScale = MIN_MIN_SCALE; this->maxScale = MAX_MAX_SCALE; } /* * Add record to temperature historic */ void ThermalDisplayer::addTemp(const float &temp) { this->temperatures.pop_front(); this->temperatures.push_back(temp); } /* * Display informations to the LCD screen * Screen if flusing and flashing everytime but this is the only way to secure data integrity. */ void ThermalDisplayer::display() { list<float>::const_iterator it; this->lcd->cls(); int pos = 0; for (it = this->temperatures.begin(); it != this->temperatures.end(); it++, pos++) { int height = (int) (32 * ((*it) - this->minScale) / (this->maxScale - this->minScale)); this->lcd->rect(pos * 2, height < 0 ? 31 : 32 - height, pos * 2 + 1, 32, 1); } } /* * Adjust scale of the display according to POT2 */ void ThermalDisplayer::adjustScale() { float potValue = this->pot; this->minScale = MIN_MIN_SCALE + potValue * (MAX_MIN_SCALE - MIN_MIN_SCALE); this->maxScale = MIN_MAX_SCALE + (1.0f - potValue) * (MAX_MAX_SCALE - MIN_MAX_SCALE); }