Diff: main.cpp

Revision:

2:54ef8b27cbaa

Parent:

1:5c2c3c1e5093

--- a/main.cpp	Fri Dec 25 16:18:46 2015 +0000
+++ b/main.cpp	Sun Dec 27 01:37:03 2015 +0000
@@ -1,9 +1,16 @@
 /**
 
+Temperature control based on:
+    NUCLEO-F334R8 
+    DS18B20 
+    RELAY module 
+    LCD1602 shield
+
 By:       www.emcu.it
 Date:     Dec.2015
 Version:  1.0
-Name:     F334andDS18B20
+Name:     F334andDS18B20andLDC1602
+NOTE:     For more info see here: http://www.emcu.it/NUCLEOevaBoards/mBed/QSG-Mbed-Library.pdf
 
 THE SOFTWARE AND HARDWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
@@ -20,7 +27,8 @@
     Flow Control: NONE
     
 This SW is ready to use on the NUCLEO-F334R8.
-Connect to the NUCLEO-F334R8, the DS18B20 sensor, see the schematic below.
+Connect to the NUCLEO-F334R8, the DS18B20 sensor (see the schematic below), the LCD1602 board and a RELAY board.
+The temperature sampling time is 200 msec, you change this parameter in the TempSamplingTime.
 
  DS18B20 front view
     __________
@@ -31,19 +39,19 @@
    |__________|
      |   |   |
      1   2   3
-    GND  DQ VCC (3,3V)
-     |   |   |______________ to VCC (3,3V on the NUCLEO-F334R8)  
+    GND  DQ VCC (5V)
+     |   |   |______________ to VCC (5V on the LCD1602 or on the NUCLEO-F334R8)  
      |   |  _|_
      |   |  | |
      |   |  | | 4K7
      |   |  | |
      |   |  -|-
-     |   |___|______________ to A1 (on the NUCLEO-F334R8) 
+     |   |___|______________ to A1 (on the LCD1602 board or on the NUCLEO-F334R8) 
      |
      |
-     |______________________ to GND (on the NUCLEO-F334R8)   
+     |______________________ to GND (on the LCD1602 board or on the NUCLEO-F334R8)   
 
-This SW is just for only one DS18B20
+This SW is just for only one DS18B20 + LCD1602 board
 This SW is a derivative of:: https://developer.mbed.org/users/Sissors/code/DS1820_HelloWorld/
 On the: https://developer.mbed.org/users/Sissors/code/DS1820_HelloWorld/ there is a multi sensor (DS18B20) example.
 
@@ -56,6 +64,11 @@
 
 #include "mbed.h"
 #include "DS1820.h"
+#include "TextLCD.h"
+
+// Define the LED
+DigitalOut myled(LED1);
+DigitalOut RL1(A5);       // Relè n.1
 
 // Define the PC serial Port
 Serial pc(SERIAL_TX, SERIAL_RX);
@@ -63,16 +76,403 @@
 // Specify the pin of the NUCLEO-F334R8 where is connected 
 // the pin.2 (DQ) of the DS18B20.
 DS1820 probe(DATA_PIN);
- 
+
+// SetUp GPIO for drive the LCD
+//  LCD (RS, E, D4, D5, D6, D7)
+TextLCD lcd(PA_9, PC_7, PB_5, PB_4, PB_10, PA_8); // LCD Shield for Arduino
+AnalogIn button(PA_0);  // board button
+PwmOut backlight(PB_6);
+
+// COSTANTs
+#define ON  1
+#define OFF 0
+#define tStep  0.1 // Step minimo di Up e Down x le impostazioni dei valori
+#define tUp    1
+#define tDown  2
+#define tRigth 3
+#define tLeft  4
+#define tNone  5
+#define NumConv 4
+#define MaxError 30
+#define TastoSU  15000
+#define TastoGIU 30900
+#define TastoDES DeltaTasti + 2
+#define TastoSIN 48000
+#define DeltaTasti 4000
+#define TempSamplingTime 200
+
+// VARIABLEs
+uint8_t n = 0;
+uint8_t FlashSeg = 0;
+uint8_t rele = OFF;
+float temperature = 0;
+float DeltaTemp = 0.5; 
+float tempON  = 20.00;
+float tempOFF = tempON + DeltaTemp;
+float temperaturePREVIOUS = 0;
+float temperatureMAX = 0;
+float temperatureMIN = 0;
+float MaxTempError = 0;
+unsigned long value = 0;
+uint8_t LastButtonPressed = tNone;
+
+// FUNCTIONs
+void CalcMed(void);
+void PrintTemperatures(void);
+uint8_t ReadButtonOnLCD1602(void);
+void SetUp(void);
+void ShowSetUp(void);
+void WaitingRightButton(void);
+
+
 int main() 
 {
-    pc.printf("\r\n\nTemperature measurement made using an NUCLEO-F334R8 and DS18B20 (input on A1). \n\rby: www.emcu.it\n\r\n\r");
+    
+    // SetUp the resolution of the DS18B20 to 12bit
+    probe.setResolution(12);
+    
+    // StartUp Logo to the PC
+    pc.printf("\r\n\r\nTemperature Control made using:\n\r");
+    pc.printf("NUCLEO-F334R8 + DS18B20 (input on A1) + LCD1602 + RELAY (output on A5).\n\r");
+    pc.printf("For more info look here:\n\r");
+    pc.printf("   http://www.emcu.it/NUCLEOevaBoards/mBed/QSG-Mbed-Library.pdf\n\r");
+    pc.printf("by: www.emcu.it\n\r\n\r");    
+    
+    // TurnOn the LCD backlight of the LCD1602 board
+    backlight = ON;  // ON: 1, OFF: 0
+    
+    // StartUp Logo to the LCD1602 board
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("By: www.emcu.it");
+    lcd.locate(0,1);
+    lcd.printf("Ver.1.0");    
+ 
+    // SetUp the temperatures after PowerOn
+    probe.convertTemperature(true, DS1820::all_devices); //Start temperature conversion, wait until ready
+    temperature = probe.temperature('c');
+    // Eliminate the wrong reading
+    CalcMed();   
+    temperaturePREVIOUS = temperature;
+    temperatureMAX = temperature;
+    temperatureMIN = 50.50;
+    wait(1); 
+        
     while(1) 
     {
-        probe.convertTemperature(true, DS1820::all_devices);         //Start temperature conversion, wait until ready
-        pc.printf("The Temperature is %3.3f Celsius/Centigradi\r\n", probe.temperature());
-        wait(1);
+        // READ BUTTON on LCD board +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+        if (ReadButtonOnLCD1602() == tUp)
+            backlight = ON;
+        else if (ReadButtonOnLCD1602() == tDown)
+            backlight = OFF;
+        else if (ReadButtonOnLCD1602() == tRigth)
+            ShowSetUp();            
+        else if (ReadButtonOnLCD1602() == tLeft)
+            SetUp();
+        else;
+        // END READ BUTTON on LCD board +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+        
+        // READ and DISPLAY the TEMPERATURE +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+        probe.convertTemperature(true, DS1820::all_devices); //Start temperature conversion, wait until ready
+        temperature = probe.temperature('c');
+        wait_ms(TempSamplingTime);             
+        // Eliminate the wrong reading
+        CalcMed();
+        
+        // ON/OFF Relè
+        if (temperature <= tempON)       // ON Relè
+        {
+            rele = ON;
+            RL1 = 1;
+        } 
+        else if (temperature >= tempOFF) // OFF Relè
+        {
+            rele = OFF;
+            RL1 = 0;
+        } 
+        
+        // pc.printf("The Temperature is %2.3f Celsius/Centigradi\r\n", temperature);
+        PrintTemperatures();
+        
+        // Display Status on the LCD1602 board
+        lcd.cls();        
+        lcd.locate(0,0);
+        if (rele == ON)
+            lcd.printf("T %2.3f RELEon ", temperature); // probe.temperature('c'));
+        if (rele == OFF)
+            lcd.printf("T %2.3f RELEoff", temperature); // probe.temperature('c'));            
+        lcd.locate(0,1);
+        lcd.printf("TM%2.3fTm%2.3f", temperatureMAX, temperatureMIN);   
+        // END READ and DISPLAY the TEMPERATURE +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++  
+
+        // START Flashing bar on the LCD ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++        
+        FlashSeg++;
+        if (FlashSeg == 1)
+        {
+            lcd.locate(8,0);
+            lcd.printf(" ");
+        }
+        if (FlashSeg == 2)
+        {
+            lcd.locate(8,0);
+            lcd.printf("*");
+            FlashSeg = 0;
+        }                
+        // END START Flashing bar on the LCD ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+               
     }
 }
 
 
+/*
+**** ShowSetUp
+This function use the global variable: 
+    tempON
+    tempOFF
+*/
+void ShowSetUp(void)
+{
+    // TurnOn the LCD backlight of the LCD1602 board
+    backlight = ON;  // ON: 1, OFF: 0
+        
+    // Show the SetUp related to:
+    // TempMin (tempON) & TempMax (tempOFF)
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("Tm%2.2f TM%2.2f ", tempON, tempOFF);
+    WaitingRightButton();  
+
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("LEFT SetUp Menu ");
+    WaitingRightButton(); 
+    
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("By: www.emcu.it ");
+    WaitingRightButton();      
+
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("By patient....  ", tempON, tempOFF);       
+}
+
+
+/*
+**** WaitingRightButton
+This function waiting the Release and Pressure of the Rirght Button
+*/
+void WaitingRightButton(void)
+{
+    // Awaiting the release of the Right Button
+    lcd.locate(0,1);
+    lcd.printf("Release RIGHT bu");    
+    while (ReadButtonOnLCD1602() == tRigth);
+    wait_ms(100);
+    // Awaiting the pressure of the Rigth Button
+    lcd.locate(0,1);    
+    lcd.printf("Press RIGTH but.");   
+    while (ReadButtonOnLCD1602() != tRigth);    
+}
+
+
+/*
+**** SetUp
+This function use the global variable: 
+    tempON
+    tempOFF
+This function use this definitions:     
+    tUp 
+    tDown  
+    tRigth 
+    tLeft    
+*/
+void SetUp(void)
+{ 
+    // TurnOn the LCD backlight of the LCD1602 board
+    backlight = ON;  // ON: 1, OFF: 0
+    
+    // Show the SetUp related to:
+    // TempMin (tempON) & TempMax (tempOFF)
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("Tm%2.2f TM%2.2f ", tempON, tempOFF);
+
+    // Awaiting the release of the Left Button
+    lcd.locate(0,1);
+    lcd.printf("Release LEFT but");    
+    while (ReadButtonOnLCD1602() == tLeft);
+    wait_ms(100);
+    // Awaiting the pressure of the Left Button
+    lcd.locate(0,1);    
+    lcd.printf("Press LEFT butt.");
+    // Awaiting the release of the Left Button    
+    while (ReadButtonOnLCD1602() != tLeft);    
+    
+    // Menù for SetUp the TempMin (tempON)
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("TempMin %2.2f", tempON);
+    lcd.locate(0,1);
+    lcd.printf("UP DOWN RIGHT");
+    // Awaiting the pressure of Right Button to finish this part
+    while (ReadButtonOnLCD1602() != tRigth)
+    { 
+        // Increase value
+        if (ReadButtonOnLCD1602() == tUp)
+            {
+            tempON = tempON + float(tStep);
+            // Awaiting the release of the tUp Button
+            while (ReadButtonOnLCD1602() == tUp);
+            }
+        // Decrease value
+        if (ReadButtonOnLCD1602() == tDown)
+            {
+            tempON = tempON - float(tStep);
+            // Awaiting the release of the tDown Button
+            while (ReadButtonOnLCD1602() == tDown);
+            }
+        lcd.locate(0,0);
+        lcd.printf("TempMin %2.2f", tempON);
+    }
+    lcd.locate(0,1);
+    lcd.printf("Release RIGHT");
+    // Awaiting the release of the tRight Button
+    while (ReadButtonOnLCD1602() == tRigth);    
+    wait_ms(100);
+    
+    // Menù for SetUp the TempMax (tempOFF)
+    if (tempOFF <= tempON)
+        tempOFF = tempON + float(tStep) + float(tStep);
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("TempMax %2.2f", tempOFF);
+    lcd.locate(0,1);
+    lcd.printf("UP DOWN LEFT");    
+    // Awaiting the pressure of Left Button to finish this part
+    while (ReadButtonOnLCD1602() != tLeft)
+    { 
+        // Increase value
+        if (ReadButtonOnLCD1602() == tUp)
+            {
+            tempOFF = tempOFF + float(tStep);
+            // Awaiting the release of the tUp Button
+            while (ReadButtonOnLCD1602() == tUp);
+            }
+        // Decrease value
+        if (ReadButtonOnLCD1602() == tDown)
+            {
+            tempOFF = tempOFF - float(tStep);
+            // Awaiting the release of the tDown Button
+            while (ReadButtonOnLCD1602() == tDown);
+            }
+        lcd.locate(0,0);
+        lcd.printf("TempMax %2.2f", tempOFF);
+    }        
+    // Awaiting the release of the tLeft Button
+    lcd.locate(0,1);    
+    lcd.printf("Release LEFT but");
+    while (ReadButtonOnLCD1602() == tLeft);
+    
+    lcd.cls();
+    lcd.locate(0,0);
+    lcd.printf("By patient....  ", tempON, tempOFF);
+    
+    return;
+}
+
+
+/*
+**** ReadButtonOnLCD1602
+This function Read the button on the LCD1620
+This function use the global variable: 
+    value
+    LastButtonPressed
+This function use this definitions:    
+    TastoSU  
+    TastoGIU 
+    TastoDES 
+    TastoSIN 
+    DeltaTasti 
+    tUp 
+    tDown  
+    tRigth 
+    tLeft  
+    tNone  
+*/
+uint8_t ReadButtonOnLCD1602(void)
+{ 
+    value = button.read_u16();
+    // pc.printf("Button value = %d\n\r",value); 
+    
+    if (value < (TastoSU + DeltaTasti) && value > (TastoSU - DeltaTasti))    // Button UP
+    { 
+        // pc.printf("UP\n\r");
+        return tUp;
+    }
+    else if (value < (TastoGIU + DeltaTasti) && value > (TastoGIU - DeltaTasti))  // Button DOWN
+    { 
+        // pc.printf("DOWN\n\r");    
+        return tDown;   
+    }        
+    else if (value < (TastoDES + DeltaTasti) && value <= (TastoDES - DeltaTasti))  // Button RIGHT
+    { 
+        // pc.printf("RIGHT\n\r");    
+        return tRigth;          
+    }
+    else if (value < (TastoSIN + DeltaTasti) && value > (TastoSIN - DeltaTasti))  // Button LEFT 
+    { 
+        // pc.printf("LEFT\n\r");     
+        return tLeft;   
+    }  
+    else           
+        return tNone;     
+}
+
+
+/*
+This function is use for eliminate the wrong reading and 
+for setup the MAX and MIN temperature we have read.
+This function use the global variable:
+    temperature
+    MaxTempError
+    temperaturePREVIOUS
+    temperatureMAX
+    temperatureMIN
+This function use this definition:
+    MaxError
+*/
+void CalcMed(void)
+{   
+    // Remove a measure that exceed the +- MaxError
+    MaxTempError = (temperature * MaxError) / 100;
+    if (temperature > (temperature + MaxTempError))
+        temperature = temperaturePREVIOUS;
+    else if (temperature < (temperature - MaxTempError))
+        temperature = temperaturePREVIOUS;    
+    else
+        temperaturePREVIOUS = temperature;
+    
+    // SetUp the Max and Min temperature measured
+    if (temperature > temperatureMAX)
+        temperatureMAX = temperature;
+    if (temperature < temperatureMIN)
+        temperatureMIN = temperature;
+}
+
+
+/*
+This function Display temperatures on the PC
+*/
+void PrintTemperatures(void)
+{
+    pc.printf("TEMPERATURE =====> %2.3f Centigrade/Centigradi\r\n", temperature); 
+    // pc.printf("DeltaTemp = %2.3f\r\n", DeltaTemp); 
+    pc.printf("tempON  = %2.3f\r\n", tempON); 
+    pc.printf("tempOFF = %2.3f\r\n", tempOFF); 
+    pc.printf("RELE' is = %d\r\n", rele);
+    pc.printf("MaxTempError = %2.3f\r\n", MaxTempError);
+    pc.printf("temperaturePREVIOUS = %2.3f\r\n", temperaturePREVIOUS); 
+    pc.printf("temperatureMAX = %2.3f\r\n", temperatureMAX); 
+    pc.printf("temperatureMIN = %2.3f\r\n\r\n", temperatureMIN); 
+}
\ No newline at end of file