main.cpp File Reference

#include <mbed.h>
#include "LCD_DISCO_F746NG.h"
#include "TS_DISCO_F746NG.h"
#include "DHT.h"
#include "display.h"
#include <iostream>
#include "stm32746g_discovery_sd.h"
#include "stm32746g_discovery_sdram.h"
#include "rtos.h"
#include "FileSystem.h"

Include dependency graph for main.cpp:

Go to the source code of this file.

Functions
Serial	usbCom (USBTX, USBRX)
DigitalOut	led1 (LED1)
DigitalOut	led2 (D2)
DigitalOut	buzzer (D4)
DHT	dhtSensor (A0, SEN51035P)
AnalogIn	vibrationSensor (A1)
AnalogIn	lightSensor (A2)
AnalogIn	soundSensor (A3)
void	counterTick ()
	Increases the current count or resets when counter_max is hit. More...
void	clearDisplay ()
	Clears the main display & sets default colors. More...
int	earthQuakeDetected ()
	Detects earth quakes. Sets the red led to ON/OFF. More...
void	displayCurrentHT ()
	Displays temperature & humidity (humidity) More...
void	displayLightStatus ()
	Says "godnat" when dark, "goddag" when light. More...
void	noiseWarning ()
	Displays a warning when the noise is too much. More...
void	displayEarthQuakeStatus ()
	Displays current earthquake status. More...
void	drawButton (uint16_t xPos, u_int16_t yPos, uint8_t *Text, int dia=10, int xOffset=5, int yOffset=7)
	Draw a round button on screen. More...
bool	buttonHit (uint16_t xPos, uint16_t yPos, uint16_t cursor_x, uint16_t cursor_y, uint16_t hitBoxAera=20)
	Checks if a button has been hit. More...
void	deviceSetup ()
	Initial device setup view. More...
void	counter_thread ()
	Counter task. More...
void	view1 ()
	View 1 logic. More...
void	view2 ()
	View 2 logic. More...
void	setView (int viewNumber)
	Set the View object. More...
void	switchView ()
	Switches the current view. More...
void	boot ()
	Setup for app. More...
void	gui_thread ()
	Gui Thread. More...
int	main ()
	Application entry point. More...

Variables
LCD_DISCO_F746NG	lcd
TS_DISCO_F746NG	ts
int	currentView = 1
int	viewCount = 2
int	tempScale = 0
TS_StateTypeDef	TS_State
uint16_t	x
uint16_t	y
uint8_t	text [30]
uint8_t	status
uint8_t	idx
uint8_t	cleared = 0
uint8_t	prev_nb_touches = 0
int	counter_max = 9999
int	counter_current = 0
int	roomNumber
int	buildingNumber
Thread	noiseThread
bool	noiseThreadStarted = false
int	device_setup_building_no = 0
int	device_setup_room_no = 0
Thread	counterThread
bool	counterThreadStarted = false
Thread	guiThread

Function Documentation

boot()

void boot

(

)

Setup for app.

Definition at line 546 of file main.cpp.

{
  led1 = 1;
  lcd.Init();
  buzzer = 0;

  //uint8_t *image = (uint8_t *)fallout;
  //lcd.DrawBitmap(0, 0, image);

  lcd.DisplayStringAt(0, LINE(1), (uint8_t *)"Booting Hercules...", CENTER_MODE);
  lcd.DisplayStringAt(0, LINE(4), (uint8_t *)"Please wait", CENTER_MODE);

  if (BSP_SD_IsDetected())
  {
    BSP_SD_Init();
    lcd.DisplayStringAt(0, LINE(6), (uint8_t *)"SD Card detected", CENTER_MODE);
  }
  else
  {
    lcd.DisplayStringAt(0, LINE(6), (uint8_t *)"SD Card not detected", CENTER_MODE);
  }

  wait(1.0f);

  clearDisplay();
}

References buzzer(), clearDisplay(), lcd, and led1().

Referenced by main().

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buttonHit()

bool buttonHit	(	uint16_t	xPos,
		uint16_t	yPos,
		uint16_t	cursor_x,
		uint16_t	cursor_y,
		uint16_t	hitBoxAera = 20
	)

Checks if a button has been hit.

Parameters

xPos
yPos
cursor_x
cursor_y
hitBoxAera

Returns

true

false

Definition at line 263 of file main.cpp.

{
  int y_hitbox_min = yPos - hitBoxAera;
  int y_hitbox_max = yPos + hitBoxAera;

  int x_hitbox_min = xPos - hitBoxAera;
  int x_hitbox_max = xPos + hitBoxAera;

  if ((cursor_y >= y_hitbox_min && cursor_y <= y_hitbox_max) && (cursor_x >= x_hitbox_min && cursor_x <= x_hitbox_max))
  {
    return true;
  }

  return false;
}

Referenced by deviceSetup(), and view2().

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buzzer()

DigitalOut buzzer

(

D4

)

Referenced by boot().

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clearDisplay()

void clearDisplay

(

)

Clears the main display & sets default colors.

Definition at line 86 of file main.cpp.

{
  for (int i = 0; i <= 10; i++)
  {
    lcd.DisplayStringAt(0, LINE(i), (uint8_t *)"                         ", LEFT_MODE);
    lcd.DisplayStringAt(0, LINE(i), (uint8_t *)"                         ", CENTER_MODE);
    lcd.DisplayStringAt(0, LINE(i), (uint8_t *)"                         ", RIGHT_MODE);

    lcd.ClearStringLine(i);
  }

  lcd.Clear(LCD_BACKGROUND);
  lcd.SetBackColor(LCD_TEXT_BACKGROUND);
  lcd.SetTextColor(LCD_TEXT_COLOR);
}

References lcd, LCD_BACKGROUND, LCD_TEXT_BACKGROUND, and LCD_TEXT_COLOR.

Referenced by boot(), gui_thread(), and setView().

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counter_thread()

void counter_thread

(

)

Counter task.

Definition at line 377 of file main.cpp.

{
  while (counterThreadStarted)
  {
    counterTick();

    ThisThread::sleep_for(1000);
  }
}

References counterThreadStarted, and counterTick().

Referenced by view1().

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counterTick()

void counterTick

(

)

Increases the current count or resets when counter_max is hit.

Definition at line 59 of file main.cpp.

{
  if (counter_current <= counter_max)
  {
    counter_current++;

    if (counter_current == counter_max)
    {
      counter_current = 0;
    }
  }

  char display_int[32];
  sprintf(display_int, "Count: %04u", counter_current);

  if (1 == currentView)
  {
    lcd.DisplayStringAt(0, LINE(4), (uint8_t *)display_int, CENTER_MODE);
  }
}

References counter_current, counter_max, currentView, and lcd.

Referenced by counter_thread().

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deviceSetup()

void deviceSetup

(

)

Initial device setup view.

Definition at line 283 of file main.cpp.

{
  char str_building[32];
  char str_room[32];

  sprintf(str_building, "Building: %d", device_setup_building_no);
  sprintf(str_room, "Room: %d", device_setup_room_no);

  lcd.DisplayStringAt(125, 75, (uint8_t *)str_building, LEFT_MODE);
  lcd.DisplayStringAt(125, 150, (uint8_t *)str_room, LEFT_MODE);

  // Building adjustment
  uint16_t building_incr_xPos = 300;
  uint16_t building_incr_yPos = 80;
  drawButton(building_incr_xPos, building_incr_yPos, (uint8_t *)"+");

  uint16_t building_decr_xPos = 350;
  uint16_t building_decr_yPos = 80;
  drawButton(building_decr_xPos, building_decr_yPos, (uint8_t *)"-");

  // Room adjustment
  uint16_t room_incr_xPos = 300;
  uint16_t room_incr_yPos = 155;
  drawButton(room_incr_xPos, room_incr_yPos, (uint8_t *)"+");

  uint16_t room_decr_xPos = 350;
  uint16_t room_decr_yPos = 155;
  drawButton(room_decr_xPos, room_decr_yPos, (uint8_t *)"-");

  // Save button
  uint16_t save_btn_xPos = 240;
  uint16_t save_btn_yPos = 230;
  drawButton(save_btn_xPos, save_btn_yPos, (uint8_t *)"Save", 32, 22);

  ts.GetState(&TS_State);
  if (TS_State.touchDetected)
  {
    for (idx = 0; idx < TS_State.touchDetected; idx++)
    {
      x = TS_State.touchX[idx];
      y = TS_State.touchY[idx];

      float btnPressWait = 0.3f;

      // Building adjustment
      if (buttonHit(building_incr_xPos, building_incr_yPos, x, y))
      {
        device_setup_building_no++;

        wait(btnPressWait);
      }

      if (buttonHit(building_decr_xPos, building_decr_yPos, x, y))
      {
        device_setup_building_no--;

        wait(btnPressWait);
      }

      // Room adjustment
      if (buttonHit(room_incr_xPos, room_incr_yPos, x, y))
      {
        device_setup_room_no++;

        wait(btnPressWait);
      }

      if (buttonHit(room_decr_xPos, room_incr_yPos, x, y))
      {
        device_setup_room_no--;

        wait(btnPressWait);
      }

      if (buttonHit(save_btn_xPos, save_btn_yPos, x, y))
      {
        buildingNumber = device_setup_building_no;
        roomNumber = device_setup_room_no;

        wait(0.5f);

        cleared = false;
      }
    }
  }
}

References buildingNumber, buttonHit(), cleared, device_setup_building_no, device_setup_room_no, drawButton(), idx, lcd, roomNumber, ts, TS_State, x, and y.

Referenced by gui_thread().

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dhtSensor()

DHT dhtSensor	(	A0	,
		SEN51035P
	)

Referenced by displayCurrentHT().

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displayCurrentHT()

void displayCurrentHT

(

)

Displays temperature & humidity (humidity)

Definition at line 127 of file main.cpp.

{
  int error = 0;
  float h = 0.0f, c = 0.0f, d = 0.0f;

  error = dhtSensor.readData();
  if (0 == error)
  {
    c = dhtSensor.ReadTemperature((eScale)tempScale);
    h = dhtSensor.ReadHumidity();
    d = dhtSensor.CalcdewPointFast(c, h);

    char temp[32];
    char tempScaleSymbol[8];
    char humid[32];
    char dew_point[32];

    switch (tempScale)
    {
    case 0:
      sprintf(tempScaleSymbol, "C");
      break;
    case 1:
      sprintf(tempScaleSymbol, "F");
      break;
    case 2:
      sprintf(tempScaleSymbol, "K");
      break;

    default:
      sprintf(tempScaleSymbol, "C");
      break;
    }

    sprintf(temp, "Temperature: %d %s", (int)c, tempScaleSymbol);
    sprintf(humid, "Humidity: %d %%", (int)h);
    sprintf(dew_point, "Dew Point: %d %s", (int)d, tempScaleSymbol);

    lcd.DisplayStringAt(0, LINE(6), (uint8_t *)temp, CENTER_MODE);
    lcd.DisplayStringAt(0, LINE(7), (uint8_t *)humid, CENTER_MODE);
    lcd.DisplayStringAt(0, LINE(8), (uint8_t *)dew_point, CENTER_MODE);
  }
}

References dhtSensor(), lcd, and tempScale.

Referenced by view1().

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displayEarthQuakeStatus()

void displayEarthQuakeStatus

(

)

Displays current earthquake status.

Definition at line 221 of file main.cpp.

{
  char earth_quake[32];
  sprintf(earth_quake, "Is Earthquake: %d", earthQuakeDetected());

  lcd.DisplayStringAt(0, LINE(10), (uint8_t *)earth_quake, CENTER_MODE);
}

References earthQuakeDetected(), and lcd.

Referenced by view1().

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displayLightStatus()

void displayLightStatus

(

)

Says "godnat" when dark, "goddag" when light.

Definition at line 175 of file main.cpp.

{
  float luminence = lightSensor.read();

  if (luminence < 0.3)
  {
    lcd.DisplayStringAt(0, LINE(12), (uint8_t *)"Godnat", CENTER_MODE);
  }
  else
  {
    lcd.DisplayStringAt(0, LINE(12), (uint8_t *)"Goddag", CENTER_MODE);
  }
}

References lcd, and lightSensor().

Referenced by view1().

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drawButton()

void drawButton	(	uint16_t	xPos,
		u_int16_t	yPos,
		uint8_t *	Text,
		int	dia = 10,
		int	xOffset = 5,
		int	yOffset = 7
	)

Draw a round button on screen.

Parameters

xPos
yPos
Text
dia
xOffset
yOffset

Definition at line 244 of file main.cpp.

{
  lcd.DrawCircle(xPos, yPos, dia);
  lcd.SetBackColor(LCD_BACKGROUND);
  lcd.DisplayStringAt((xPos - xOffset), (yPos - yOffset), Text, LEFT_MODE);
  lcd.SetBackColor(LCD_TEXT_BACKGROUND);
}

References lcd, LCD_BACKGROUND, and LCD_TEXT_BACKGROUND.

Referenced by deviceSetup(), and view2().

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earthQuakeDetected()

int earthQuakeDetected

(

)

Detects earth quakes. Sets the red led to ON/OFF.

Returns

int

Definition at line 109 of file main.cpp.

{
  if (vibrationSensor.read() > 0.06)
  {
    led2 = 1;

    return 1;
  }

  led2 = 0;

  return 0;
}

References led2(), and vibrationSensor().

Referenced by displayEarthQuakeStatus().

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gui_thread()

void gui_thread

(

)

Gui Thread.

Definition at line 577 of file main.cpp.

{
  while (true)
  {
    if (!buildingNumber && !roomNumber)
    {
      deviceSetup();
    }
    else
    {
      setView(currentView);
    }

    ts.GetState(&TS_State);
    if (buildingNumber && roomNumber && TS_State.touchDetected)
    {
      for (idx = 0; idx < TS_State.touchDetected; idx++)
      {
        x = TS_State.touchX[idx];
        y = TS_State.touchY[idx];

        int y_hitbox_min = 240 - 50;
        int y_hitbox_max = 240 + 50;

        int x_hitbox_min = 410 - 50;
        int x_hitbox_max = 410 + 50;

        if ((y >= y_hitbox_min && y <= y_hitbox_max) && (x >= x_hitbox_min && x <= x_hitbox_max))
        {
          switchView();
        }
      }
    }
    else
    {
      if (!cleared)
      {
        clearDisplay();

        char displayView[32];
        sprintf(displayView, "View: %d", currentView);

        lcd.DrawHLine(10, 10, 460);
        lcd.SetFont(&Font8);

        lcd.SetBackColor(LCD_BACKGROUND);
        lcd.DisplayStringAt(10, 12, (uint8_t *)"Hercules v1.1", LEFT_MODE);
        lcd.DrawVLine(80, 10, 11);

        if (buildingNumber && roomNumber)
        {
          char building[32];
          char room[32];

          sprintf(building, "Building: %d", buildingNumber);
          sprintf(room, "Room: %d", roomNumber);

          lcd.DisplayStringAt(85, 12, (uint8_t *)building, LEFT_MODE);
          lcd.DisplayStringAt(150, 12, (uint8_t *)room, LEFT_MODE);
        }

        lcd.SetBackColor(LCD_TEXT_BACKGROUND);

        lcd.DrawHLine(10, 20, 460);
        lcd.SetFont(&Font16);

        if (buildingNumber && roomNumber)
        {
          lcd.DisplayStringAt(10, 240, (uint8_t *)displayView, LEFT_MODE);
          lcd.DisplayStringAt(410, 240, (uint8_t *)"Next", LEFT_MODE);
        }

        cleared = 1;
      }
    }
  }
}

References buildingNumber, clearDisplay(), cleared, currentView, deviceSetup(), idx, lcd, LCD_BACKGROUND, LCD_TEXT_BACKGROUND, roomNumber, setView(), switchView(), ts, TS_State, x, and y.

Referenced by main().

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led1()

DigitalOut led1

(

LED1

)

Referenced by boot().

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led2()

DigitalOut led2

(

D2

)

Referenced by earthQuakeDetected().

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lightSensor()

AnalogIn lightSensor

(

A2

)

Referenced by displayLightStatus().

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main()

int main

(

)

Application entry point.

Returns

int

Definition at line 662 of file main.cpp.

{
  boot();

  // The data cache is disabled to avoid screen flickering.
  SCB_CleanDCache();
  SCB_DisableDCache();

  wait(0.25);

  guiThread.start(gui_thread);
}

References boot(), gui_thread(), and guiThread.

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noiseWarning()

void noiseWarning

(

)

Displays a warning when the noise is too much.

Definition at line 196 of file main.cpp.

{
  while (noiseThreadStarted)
  {
    float noiseLevel = soundSensor.read();

    if (noiseLevel >= 0.5 && 1 == currentView)
    {
      lcd.DisplayStringAt(0, LINE(13), (uint8_t *)"Noise warning!", CENTER_MODE);
    }
    else
    {
      lcd.SetBackColor(LCD_BACKGROUND);
      lcd.DisplayStringAt(0, LINE(13), (uint8_t *)"              ", CENTER_MODE);
      lcd.SetBackColor(LCD_TEXT_BACKGROUND);
    }

    ThisThread::sleep_for(1000);
  }
}

References currentView, lcd, LCD_BACKGROUND, LCD_TEXT_BACKGROUND, noiseThreadStarted, and soundSensor().

Referenced by view1().

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setView()

void setView

(

int

viewNumber

)

Set the View object.

Parameters

viewNumber

Definition at line 486 of file main.cpp.

{
  if (viewNumber != currentView)
  {
    usbCom.printf("[Toggle]: setView viewNumber %d!\n", viewNumber);
    usbCom.printf("[Toggle]: setView currentView %d!\n", currentView);

    cleared = 0;

    clearDisplay();
  }

  currentView = viewNumber;

  switch (viewNumber)
  {
  case 1:
    view1();
    break;
  case 2:
    view2();
    break;

  default:
    usbCom.printf("Unknown view number: %d\n", viewNumber);
    break;
  }
}

References clearDisplay(), cleared, currentView, usbCom(), view1(), and view2().

Referenced by gui_thread(), and switchView().

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soundSensor()

AnalogIn soundSensor

(

A3

)

Referenced by noiseWarning().

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switchView()

void switchView

(

)

Switches the current view.

Definition at line 519 of file main.cpp.

{
  wait(0.1);

  usbCom.printf("switchView toggled!\n");

  int viewNumber = currentView;

  if (currentView < viewCount)
  {
    viewNumber++;
  }
  else
  {
    viewNumber = 1;
  }

  usbCom.printf("switchView viewNumber %d!\n", viewNumber);
  usbCom.printf("switchView currentView %d!\n", currentView);

  setView(viewNumber);
}

References currentView, setView(), usbCom(), and viewCount.

Referenced by gui_thread().

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usbCom()

Serial usbCom	(	USBTX	,
		USBRX
	)

Referenced by setView(), switchView(), and view2().

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vibrationSensor()

AnalogIn vibrationSensor

(

A1

)

Referenced by earthQuakeDetected().

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view1()

void view1

(

)

View 1 logic.

Definition at line 391 of file main.cpp.

{
  displayCurrentHT();
  displayEarthQuakeStatus();
  displayLightStatus();

  if (!counterThreadStarted)
  {
    counterThread.start(counter_thread);

    counterThreadStarted = true;
  }

  if (!noiseThreadStarted)
  {
    noiseThread.start(noiseWarning);

    noiseThreadStarted = true;
  }
}

References counter_thread(), counterThread, counterThreadStarted, displayCurrentHT(), displayEarthQuakeStatus(), displayLightStatus(), noiseThread, noiseThreadStarted, and noiseWarning().

Referenced by setView().

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view2()

void view2

(

)

View 2 logic.

Definition at line 416 of file main.cpp.

{
  char i2c_clock[32];
  sprintf(i2c_clock, "I2C Clock: %d KHz", ((int)I2C_SPEED / 1000));
  lcd.DisplayStringAt(0, LINE(3), (uint8_t *)i2c_clock, CENTER_MODE);

  if (BSP_SD_IsDetected())
  {
    lcd.DisplayStringAt(0, LINE(7), (uint8_t *)"SD Card detected", CENTER_MODE);
  }
  else
  {
    lcd.DisplayStringAt(0, LINE(7), (uint8_t *)"SD Card not detected", CENTER_MODE);
  }

  lcd.DisplayStringAt(145, 150, (uint8_t *)"Temperature scale", LEFT_MODE);

  uint16_t tempBtnYpos = 190;
  uint16_t tempBtnCelsiusPos = 170;
  uint16_t tempBtnFahrenheitPos = 230;
  uint16_t tempBtnKelvinPos = 290;

  drawButton(tempBtnCelsiusPos, tempBtnYpos, (uint8_t *)"C");
  drawButton(tempBtnFahrenheitPos, tempBtnYpos, (uint8_t *)"F");
  drawButton(tempBtnKelvinPos, tempBtnYpos, (uint8_t *)"K");

  ts.GetState(&TS_State);
  if (TS_State.touchDetected)
  {
    for (idx = 0; idx < TS_State.touchDetected; idx++)
    {
      x = TS_State.touchX[idx];
      y = TS_State.touchY[idx];

      // Building adjustment
      if (buttonHit(tempBtnCelsiusPos, tempBtnYpos, x, y))
      {
        tempScale = 0;

        usbCom.printf("Temp scale switched to Celcius!");

        wait(0.5f);
      }

      if (buttonHit(tempBtnFahrenheitPos, tempBtnYpos, x, y))
      {
        tempScale = 1;

        usbCom.printf("Temp scale switched to Fahrenheit!");

        wait(0.5f);
      }

      if (buttonHit(tempBtnKelvinPos, tempBtnYpos, x, y))
      {
        tempScale = 2;

        usbCom.printf("Temp scale switched to Kelvin!");

        wait(0.5f);
      }
    }
  }
}

References buttonHit(), drawButton(), idx, lcd, tempScale, ts, TS_State, usbCom(), x, and y.

Referenced by setView().

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Variable Documentation

buildingNumber

int buildingNumber

Definition at line 53 of file main.cpp.

Referenced by deviceSetup(), and gui_thread().

cleared

uint8_t cleared = 0

Definition at line 45 of file main.cpp.

Referenced by deviceSetup(), gui_thread(), and setView().

counter_current

int counter_current = 0

Definition at line 50 of file main.cpp.

Referenced by counterTick().

counter_max

int counter_max = 9999

Definition at line 49 of file main.cpp.

Referenced by counterTick().

counterThread

Thread counterThread

Definition at line 370 of file main.cpp.

Referenced by view1().

counterThreadStarted

bool counterThreadStarted = false

Definition at line 371 of file main.cpp.

Referenced by counter_thread(), and view1().

currentView

int currentView = 1

Definition at line 34 of file main.cpp.

Referenced by counterTick(), gui_thread(), noiseWarning(), setView(), and switchView().

device_setup_building_no

int device_setup_building_no = 0

Definition at line 231 of file main.cpp.

Referenced by deviceSetup().

device_setup_room_no

int device_setup_room_no = 0

Definition at line 232 of file main.cpp.

Referenced by deviceSetup().

guiThread

Thread guiThread

Definition at line 655 of file main.cpp.

Referenced by main().

idx

uint8_t idx

Definition at line 44 of file main.cpp.

Referenced by deviceSetup(), gui_thread(), and view2().

lcd

LCD_DISCO_F746NG lcd

Definition at line 16 of file main.cpp.

Referenced by boot(), clearDisplay(), counterTick(), deviceSetup(), displayCurrentHT(), displayEarthQuakeStatus(), displayLightStatus(), drawButton(), gui_thread(), noiseWarning(), and view2().

noiseThread

Thread noiseThread

Definition at line 189 of file main.cpp.

Referenced by view1().

noiseThreadStarted

bool noiseThreadStarted = false

Definition at line 190 of file main.cpp.

Referenced by noiseWarning(), and view1().

prev_nb_touches

uint8_t prev_nb_touches = 0

Definition at line 46 of file main.cpp.

roomNumber

int roomNumber

Definition at line 52 of file main.cpp.

Referenced by deviceSetup(), and gui_thread().

status

uint8_t status

Definition at line 43 of file main.cpp.

tempScale

int tempScale = 0

Definition at line 37 of file main.cpp.

Referenced by displayCurrentHT(), and view2().

text

uint8_t text[30]

Definition at line 42 of file main.cpp.

Referenced by Display::String().

ts

TS_DISCO_F746NG ts

Definition at line 18 of file main.cpp.

Referenced by deviceSetup(), gui_thread(), and view2().

TS_State

TS_StateTypeDef TS_State

Definition at line 40 of file main.cpp.

Referenced by deviceSetup(), gui_thread(), and view2().

viewCount

int viewCount = 2

Definition at line 35 of file main.cpp.

Referenced by switchView().

x

uint16_t x

Definition at line 41 of file main.cpp.

Referenced by deviceSetup(), gui_thread(), and view2().

y

uint16_t y

Definition at line 41 of file main.cpp.

Referenced by deviceSetup(), gui_thread(), and view2().