Nicu FLORICA (niq_ro): Arduino Mega

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miercuri, 25 martie 2015

Placa de retea cu ENC28J60 si Arduino Mega

In articolul precedent numit Placa de retea cu ENC28J60 si Arduino am prezentat pe scurt cum am conectat eu placa de retea la unArduino Uno... avandu-l ocupat pentru "teste de anduranta", am conectat o alta placa cu ENC28J60 la o placa Arduino Mega si incarcand sketch-ul am avut surpriza sa constat ca nu functioneaza.. chiar daca am schimbat legaturile pe pinii dedicati: MISO la pin 50, MOSI la pin 51, SCK la 52 si SS/CS la 53, cum e prezentat si in articolul How to use enc28j60 ethernet shield with Arduino Mega 2560

Acolo se prezinta o modificare, pentru fortarea pinului CS/SS la pin 53.

...

if (ether.begin(sizeof Ethernet::buffer, mymac, 53) == 0)

  {

    Serial.println(P("Failed to access Ethernet controller"));

  }

  else

  {

     Serial.println(P("Ethernet is fine and up"));

  }

...

Pentru a functiona, in loc de litera P trebuie pus F.

De asemenea, si in libraria Ethercard se mentioneaza acest lucru si prezinta comanda de trecerea a pinului 8 in 53:

VCC -   3.3V
GND -    GND
SCK - Pin 52
SO  - Pin 50
SI  - Pin 51
CS  - Pin 53 # Selectable with the ether.begin() function
# The default CS pin defaults to 8, so you have to set it on a mega:
ether.begin(sizeof Ethernet::buffer, mymac, 53)

Din pacate, la teste nu reuseam sa-l fac functional si renuntasem... dar Luci, un coleg mai rabdator, a cautat si el pe net si a dat de filmuletul Arduino EthernetShield ENC28J60 Configuration - Parte1

Inlocuind partea de mutare a comenzii de pe pinul 8 (de la Arduino Uno) pe 53 (la Arduino Mega), sketch-ul din articolul precedent arata asa:

//original sketch from http://www.lucadentella.it/2012/11/10/enc28j60-e-arduino-9/
// adapted sketch from http://nicuflorica.blogspot.ro/
#include <EtherCard.h>
#include <avr/wdt.h>
#define RELAY_PIN 2

// ethernet interface mac address, must be unique on the LAN
static byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
static byte myip[] = { 192,168,0,199 };

byte Ethernet::buffer[500];
BufferFiller bfill;

char* on  = "ON";
char* off = "OFF";

boolean relayStatus;
char* relayLabel;
char* linkLabel;

void setup () {
 
 Serial.begin(9600);
 // 1st good version from https://www.youtube.com/watch?v=d2toibPesS4
/* if (ether.begin(sizeof Ethernet::buffer, mymac, 53) == 0)
    Serial.println(F("Failed to access Ethernet controller"));  
*/

 // 2nd good version from http://en.code-bude.net/2013/06/22/how-to-use-enc28j60-ethernet-shield-with-arduino-mega-2560/ 
if (ether.begin(sizeof Ethernet::buffer, mymac, 53) == 0)
  {
    Serial.println(F("Failed to access Ethernet controller"));
  }
  else
  {
     Serial.println(F("Ethernet is fine and up"));
  }

ether.staticSetup(myip);  // put static IP in local network
 
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);  
  relayStatus = false;
  relayLabel = off;
  linkLabel = on;
  
  wdt_enable(WDTO_1S);//This start the watchdog timer with a 1 second timeout
}
  
void loop() {
wdt_reset();//This resets the timer

long t = millis() / 1000;
  word h = t / 3600;
  byte m = (t / 60) % 60;
  byte s = t % 60; 

  word len = ether.packetReceive();
  word pos = ether.packetLoop(len);
  
  if(pos) {
        
    if(strstr((char *)Ethernet::buffer + pos, "GET /?ON") != 0) {
      relayStatus = true;
      relayLabel = on;
      linkLabel = off;
    } else if(strstr((char *)Ethernet::buffer + pos, "GET /?OFF") != 0) {
      relayStatus = false;
      relayLabel = off;
      linkLabel = on;
    }
    digitalWrite(RELAY_PIN, relayStatus); 
  
    BufferFiller bfill = ether.tcpOffset();
    bfill.emit_p(PSTR("HTTP/1.0 200 OK\r\n"
    "Content-Type: text/html\r\nPragma: no-cache\r\n\r\n"
    // from http://fabiotomio.com.br/blog/2014/05/07/arduino-modulo-ethernet-enc28j60/
 /*     "Content-Type: text/html\r\n"
      "Refresh: 5\r\n"
      "\r\n"
  */    
     
      "<html><head><meta name='viewport' content='width=200px'/></head><body>"
      "<div style='position:absolute;width:200px;height:200px;top:50%;left:50%;margin:-100px 0 0 -100px'>"
      "<div style='font:bold 14px verdana;text-align:center'>Relay is $S</div>"
      "<br><div style='text-align:center'>"
      "<a href='/?$S'><img src='http://www.lucadentella.it/files/bt_$S.png'></a>"
      ), relayLabel, linkLabel, linkLabel);
bfill.emit_p(PSTR("<p>"
"<h2>$D$D:$D$D:$D$D</h2>"),
h/10, h%10, m/10, m%10, s/10, s%10);
 bfill.emit_p(PSTR("</body></html>"));   

      ether.httpServerReply(bfill.position());
    }
}
// note: for watchdog see https://hackaday.io/project/3731-open-z3zzvw3/log/12362-the-brain-of-the-thingy

In sketch am lasat si varianta din film, doar ca "comentata"...

La adresa locala data de mine, 192.168.0.199 gasim 2 situatii:

PS: Pentru a nu avea probleme, trebuie impus IP-ul prin comanda ether.staticSetup(myip); dupa cum se vede in imaginea urmatoare:

PS2: Dupa cateva ore de teste, am observat ca este stabila pagina doar daca se trimit comenzi din reteaua locala, prin cablu, in cazul folosiri unui periferic (laptop, telefon, tableta) conectat prin "uairles" atunci ea se blocheaza. Solutia gasita de mine pentru a elimia aceasta ploblerma, este acea de a folosi pinul 8, ca in cazul placii Arduino Uno si renuntare ala "portarea" pinului 8 la 53...

In montaj eu am mai pus si pinul de RESET...

Sketch-ul devine simplu:

//original sketch from http://www.lucadentella.it/2012/11/10/enc28j60-e-arduino-9/
// adapted sketch by niq_ro from http://nicuflorica.blogspot.ro/
// direct link: http://nicuflorica.blogspot.ro/2015/03/placa-de-retea-cu-enc28j60-si-arduino_25.html
#include <EtherCard.h>
#include <avr/wdt.h> // for watchdog see https://hackaday.io/project/3731-open-z3zzvw3/log/12362-the-brain-of-the-thingy
#define RELAY_PIN 2

// ethernet interface mac address, must be unique on the LAN
static byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
static byte myip[] = { 192,168,0,199 };
static byte gwip[] = {192,168,0,1};

byte Ethernet::buffer[500];
BufferFiller bfill;

char* on  = "ON";
char* off = "OFF";

boolean relayStatus;
char* relayLabel;
char* linkLabel;

void setup () {
 Serial.begin(9600);
 if(ether.begin(sizeof Ethernet::buffer, mymac) == 0)
    Serial.println( "Failed to access Ethernet controller");
  else
    Serial.println("Ethernet controller initialized");
 if (!ether.dhcpSetup())
    Serial.println("Failed to get configuration from DHCP");
  if(!ether.staticSetup(myip))
    Serial.println("Failed to set IP address");
 ether.printIp("My IP: ", ether.myip);
//   ether.printIp("Netmask: ", ether.mymask);
  ether.printIp("GW IP: ", ether.gwip);
  ether.printIp("DNS IP: ", ether.dnsip);

  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);  
  relayStatus = false;
  relayLabel = off;
  linkLabel = on;
  
  wdt_enable(WDTO_1S);//This start the watchdog timer with a 1 second timeout
}
  
void loop() {
wdt_reset();//This resets the timer

long t = millis() / 1000;
  word h = t / 3600;
  byte m = (t / 60) % 60;
  byte s = t % 60; 

  word len = ether.packetReceive();
  word pos = ether.packetLoop(len);
  
  if(pos) {
        
    if(strstr((char *)Ethernet::buffer + pos, "GET /?ON") != 0) {
      relayStatus = true;
      relayLabel = on;
      linkLabel = off;
    } else if(strstr((char *)Ethernet::buffer + pos, "GET /?OFF") != 0) {
      relayStatus = false;
      relayLabel = off;
      linkLabel = on;
    }
    digitalWrite(RELAY_PIN, relayStatus); 
  
    BufferFiller bfill = ether.tcpOffset();
    bfill.emit_p(PSTR("HTTP/1.0 200 OK\r\n"
    "Content-Type: text/html\r\nPragma: no-cache\r\n\r\n"
    // from http://fabiotomio.com.br/blog/2014/05/07/arduino-modulo-ethernet-enc28j60/
 /*     "Content-Type: text/html\r\n"
      "Refresh: 5\r\n"
      "\r\n"
  */    
      "<html><head><meta name='viewport' content='width=200px'/></head><body>"
      "<div style='position:absolute;width:200px;height:200px;top:50%;left:50%;margin:-100px 0 0 -100px'>"
      "<div style='font:bold 14px verdana;text-align:center'>Relay is $S</div>"
      "<br><div style='text-align:center'>"
      "<a href='/?$S'><img src='http://www.lucadentella.it/files/bt_$S.png'></a>"
      ), relayLabel, linkLabel, linkLabel);
bfill.emit_p(PSTR("<p>"
"<h2>$D$D:$D$D:$D$D</h2>"),
h/10, h%10, m/10, m%10, s/10, s%10);
 bfill.emit_p(PSTR("</body></html>"));   

      ether.httpServerReply(bfill.position());
    }
}

vineri, 1 august 2014

Afisaj grafic color QVGA de 2,2" cu integrat ILI9341 conectat la Arduino (4)

Ministatie meteo cu DHT11

Senzorul DTH11 ofera informatii despre temperatura si umiditate, dar nu cu o prea mare precizie, totusi pentru experimente este ok (domeniu de temperatura 0..50^oC cu precizie de +2^oC, respectiv umiditate 20..90%RH cu o precizie de +5%RH). L-am mai prezentat la inceputurile mele cu Arduino: Ministatie meteo cu senzorul DHT11 si.. Arduino

Exista o varianta mai buna decat DHT11, ca domeniu de masura si precizie, e vorba de DHT22: domeniu de temperatura -40..125^oC cu precizie de +0,5^oC, respectiv umiditate 0..100%RH cu o precizie de +2%RH.

Revenind la partea de afisare pe ecran grafic color, am folosit montajul de la partea de termometru dublu cu senzori de temperatura DS18B20 (prezentat in articolul anterior), adaptandu-l la modul de conectare al modulului cu senzor DHT11:

Am facut si un filmulet numit ministatie meteo cu DHT11 pe ecran TFT de 2.2" cu ILI9341:

Sketch-ul folosit de mine este:

/*
// original sketch by niq_ro from http://nicuflorica.blogspot.com for analog clock using ucglib library
// version for 2.2" TFT with ILI9341  - 2014.07.29, Craiova - Romania
// or http://www.tehnic.go.ro
// or http://arduinotehniq.blogspot.com/

Universal uC Color Graphics Library
  https://code.google.com/p/ucglib/
  Copyright (c) 2014, olikraus@gmail.com
  All rights reserved.
*/
#include <SPI.h>
#include "Ucglib.h"
// Ucglib_ILI9341_18x240x320_SWSPI ucg(/*sclk=*/ 13, /*data=*/ 11, /*cd=*/ 6 , /*cs=*/ 5, /*reset=*/ 4); //gordons
//Ucglib_ILI9341_18x240x320_SWSPI ucg(/*sclk=*/ 52, /*data=*/ 51, /*cd=*/ 26 , /*cs=*/ 24, /*reset=*/ 22); //at Mega
//Ucglib_ILI9341_18x240x320_HWSPI ucg(/*cd=*/ 6 , /*cs=*/ 5, /*reset=*/ 4); // at Uno
Ucglib_ILI9341_18x240x320_HWSPI ucg(/*cd=*/ 26 , /*cs=*/ 24, /*reset=*/ 22); // at Mega

/*
http://gordonsprojects.blogspot.ro/2014/04/arduino-tft-serial-spi-22-ili9341.html
Mega | Uno | TFT - ILI9341
----------------------
D22  | D4  | RESET
D24  | D5  | CS
D26  | D6  | D/C
 ?   | ?   | LED (via 220 ohms resistor at 5V)
D51  | D11 | MOSI
D50  | D12 | MISO
D52  | D13 | SCK
-----------------------------
with CD4050 adapter or 10k resistor, power supply and logical levels is 3.3V
schematic: http://nicuflorica.blogspot.ro/2014/07/afisaj-grafic-color-qvga-de-22-cu.html
*/

#include "DHT.h"
#define DHTPIN A0     // what pin we're connected to
#define DHTTYPE DHT11   // DHT 11 
DHT dht(DHTPIN, DHTTYPE);


void subrutina(void) {
  ucg.setRotate90();
  // graphic commands to redraw the complete screen should be placed here  
  
  // pictez un chenar
  ucg.setColor(255, 255, 255); // culoare alba
  ucg.drawFrame(0,0,320,240); // 

  ucg.setFont(ucg_font_courB24); // 20 pixel height
  ucg.setColor(255, 0, 0); // culoare rosie
  ucg.setPrintPos(60,30);
  ucg.print("Ministatie");
  ucg.setColor(0, 255, 0); // culoare verde
  ucg.setColor(0, 255, 0);
  ucg.setColor(0, 0, 255); // culoare albastru
  ucg.setPrintPos(20, 60);
  ucg.print("meteo cu DHT11");
  ucg.setFont(ucg_font_fur17r); // 17 pixel height
  ucg.setColor(255, 255, 0); // culoare galbena
  ucg.setPrintPos(25,90);
  ucg.print("ecran grafic 2,2'' (5,6cm)");
  ucg.setFont(ucg_font_courB24); // 20 pixel height 
  ucg.setColor(0, 255, 255); // culoare bleo
  ucg.setPrintPos(10,120);
  ucg.print("QVGA cu ILI9341");
  ucg.setColor(255, 0, 255); // culoare mov
  ucg.setPrintPos(40,150);
  ucg.print("versiune 3.0");
  ucg.setFont(ucg_font_fur17r); // 17 pixel height
  ucg.setColor(255, 255, 255); // culoare alb
  ucg.setPrintPos(60,200);
  ucg.print("realizat de niq_ro");

}

// variables 
// variabile 
int t1, t2;
int t10, t20;
int t11, t21;
int t12, t22;
int t13, t23;
int h11, h12;

void setup(void) {
  dht.begin();
  //  Serial.begin(9600);      // open the serial port at 9600 bps:   
  delay(1000);
  ucg.begin(UCG_FONT_MODE_TRANSPARENT);
//ucg.begin(UCG_FONT_MODE_SOLID);
  ucg.clearScreen();


//  ucg.clearScreen(); 
  ucg.setFont(ucg_font_ncenR14r);
  ucg.setColor(255, 0, 255);
  ucg.setColor(1, 255, 0,0);
  subrutina(); // unde e mesajul de intampinare
  delay(5000);
  ucg.clearScreen();

// initial value  
t12=40.0;
t12=40.0;

  
}

void loop(void) {

  // DHT11 part
 int h11 = dht.readHumidity();
 int t11 = dht.readTemperature();

//-------------------------------------------------------

if (t11 != t12) 
{
 texte(t11, t12, 20, 0); // temperature, x, y
 termometre(t11, 20);
}

if (h11 != h12) 
{
 texte(h11, h12, 100, 90); // humidity, x, y
 sticla(h11, h12);
}




 delay (2000); 
 // store old value
t12=t11;
h12=h11;

} // final de program, se revine de la inceput



void texte(int t3, int t4, int ics, int igrec)
{
  int t5 = t3;
  int t6 = t4;
   ucg.setFont(ucg_font_courB24); // 20 pixel height   
// ucg.clearScreen(); 
if (t3*t4 < 0)
{ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(ics+7, qy + igrec , 105);
}
}

// sterg semnul ??
int t51 = t5/10;
int t61 = t6/10;

ucg.setColor(0, 0, 0); 

// sterg zeci daca e cazul
if (t51 != t61)
{
//ucg.setColor(255, 255, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(ics+28, qy + igrec , 21);
}
}
  t5 = t3 - t51*10;
  t6 = t4 - t61*10;

// sterg unitati daca e cazul
//if ((t5 != t6) || (t5-t6>0.2))
if (t5 != t6)
{
//ucg.setColor(0, 255, 255); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(ics+49, qy + igrec , 21);
}
} 

if (igrec <30) 
{
 ucg.setColor(255, 255, 0);  
 ucg.setPrintPos(10 + ics, 30 + igrec);
 ucg.print("temperatura:"); 
}
else 
{
 ucg.setColor(0, 255, 255);  
 ucg.setPrintPos(15 + ics, 30 + igrec);
 ucg.print("umiditate:"); 
}
// ucg.setPrintPos(10 + ics, 30 + igrec);
// ucg.print("temperatura:"); 

//ucg.setFont(ucg_font_fub42n); // 20 pixel height   
ucg.setPrintPos(10 + ics, 60 + igrec);
if (t3 > 10) ucg.print("+");
else 
{
//ucg.setColor(255, 255, 0); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(ics+10, qy + igrec , 21);
}
if (igrec <30) ucg.setColor(255, 255, 0);  
else ucg.setColor(0, 255, 255); 
ucg.setPrintPos(31 + ics, 60 + igrec);
ucg.print("+");
}
//if (t3==0.0) ucg.print("  ");

// ucg.print(t12,1); 
 ucg.print(t3,1); 
// ucg.print("23.6"); 

if (igrec <30) 
{
 ucg.print(" C"); 
 ucg.setFont(ucg_font_fur17r); // 17 pixel height
/* ucg.setPrintPos(30 + ics, 35 + igrec);
 if (igrec == 0) ucg.print("int"); 
 else ucg.print("ext"); 
*/
 ucg.setPrintPos(75 + ics, 50 + igrec);
 ucg.print("o"); 
}
else ucg.print("%"); 
}


void termometre (int t, int ics1)
{
  ucg.setColor(255, 255, 255);  
//  ucg.setColor(r2, g2, b2);  
  ucg.drawFrame(ics1-4,10,9,200); // desenez corp termometru
//  ucg.drawDisc(ics1,220,10,UCG_DRAW_ALL);  // desenez partea de jos, cu mercur
  ucg.drawCircle(ics1,220,10,UCG_DRAW_ALL);  // desenez partea de jos, cu mercur
for (int a = 0; a < 5; a++)
{
  ucg.drawLine(ics1-5,15+35*a,ics1-7,15+35*a);
  ucg.drawLine(ics1+5,15+35*a,ics1+7,15+35*a);
}
  ucg.drawLine(ics1-10,190,ics1+10,190);  // zero degree

ucg.setFont(ucg_font_courB24); // 20 pixel height   
ucg.setPrintPos(15 + ics1, 199);
ucg.print("0 C"); 

ucg.setFont(ucg_font_fur17r); // 17 pixel height
ucg.setPrintPos(39 + ics1, 185);
 ucg.print("o"); 

// temperature "lengh"
//int lin = 140 - 2*t;
int lin = 190-3.5*t;

ucg.setColor(0, 0, 0);  // black 
//ucg.drawBox(ics1-2,20, 5, 190); // erase 
ucg.drawBox(ics1-2,21, 5, lin+5);

// temperature gaphics
if (ics1 <30) ucg.setColor(255, 255, 0);  
else ucg.setColor(0, 0, 255);  

ucg.drawDisc(ics1,220,8,UCG_DRAW_ALL);  // desenez partea de jos, cu mercur

//ucg.setColor(255, 255, 0);  
// ucg.drawLine(ics1-10,lin,ics1+10,lin); // just for control 
ucg.drawBox(ics1-2,lin, 5, 210-lin);
}  

void sticla (int h, int h2)
{
  int xmax = 319;
  int ymax = 239;
  int raza = 98; 
//  h = 45; // pentru teste
  ucg.setColor(255, 255, 255);  
  ucg.drawCircle(319,239,100,UCG_DRAW_UPPER_LEFT);  // desenez arc de cerc in stanga sus

  ucg.setColor(0, 0, 255);  
  ucg.drawHLine(220, 239, 100); // desenez linia de 0% (orizontala)
  ucg.setColor(255, 0, 0);  
  ucg.drawVLine(319, 140, 100); // desenez linia de 100% (verticala)
  
  //calculez coordonate
  int xa=100*cos(2*h2*0.9*3.14/360);
  int ya=100*sin(2*h2*0.9*3.14/360);  
  int xn=100*cos(2*h*3.14*0.9/360);
  int yn=100*sin(2*h*3.14*0.9/360);  
  //sterg indicatia anterioara
  ucg.setColor(0, 0, 0);  
  ucg.drawLine(xmax-xa, ymax-ya, xmax, ymax); // 
  //desenez indicatia noua
  ucg.setColor(0, 255, 255);  
  ucg.drawLine(xmax-xn, ymax-yn, xmax, ymax); // 
}

Avand in vedere ca folosesc Arduino Mega nu mai am restrictii la marimea programului, asa ca pana o sa cumpar un senzor performant DHT22, o sa sa masor temperatura cu senzorul DS18B20 si umiditatea cu DHT11.
Schema de conectare a celor 2 senzori este combinatia schemelor anterioare:

Ministatie meteo cu DHT11 si DS18B20

Am combinat sketch-ul anterior cu cel de la masurarea cu DS18B20 obtinand:

Am facut si un filmulet numit ministatie meteo cu DHT11 si DS18B20 pe ecran TFT de 2.2" cu ILI9341:

Schema de conectare este o combinatie a celei anterioare si a celei de la DS18B20, iar sketch-ul folosit este:

/*
original sketch by niq_ro from http://nicuflorica.blogspot.com using ucglib library
version for 2.2" TFT with ILI9341  - 2014.07.29, Craiova - Romania
use Universal uC Color Graphics Library from https://code.google.com/p/ucglib/
*/
#include <SPI.h>
#include "Ucglib.h"
//Ucglib_ILI9341_18x240x320_HWSPI ucg(/*cd=*/ 6 , /*cs=*/ 5, /*reset=*/ 4); // at Uno
Ucglib_ILI9341_18x240x320_HWSPI ucg(/*cd=*/ 26 , /*cs=*/ 24, /*reset=*/ 22); // at Mega
/*
Mega | Uno | TFT - ILI9341
----------------------
D22  | D4  | RESET
D24  | D5  | CS
D26  | D6  | D/C
 ?   | ?   | LED (via 220 ohms resistor at 5V)
D51  | D11 | MOSI
D50  | D12 | MISO
D52  | D13 | SCK
-----------------------------
with CD4050 adapter or 10k resistor, power supply and logical levels is 3.3V
schematic: http://nicuflorica.blogspot.ro/2014/07/afisaj-grafic-color-qvga-de-22-cu.html
*/

#include <OneWire.h>
OneWire  ds(10);  // on pin 10 (a 4.7K resistor is necessary)  
int ics =0; //count number of sensor

#include "DHT.h"
#define DHTPIN A0     // what pin we're connected to
#define DHTTYPE DHT11   // DHT 11 
DHT dht(DHTPIN, DHTTYPE);

float t1, t2;
float t10, t20;
float t11, t21;
float t12, t22;
float t13, t23;
int h11, h12;

void setup(void) {
delay(1000);
dht.begin();
ucg.begin(UCG_FONT_MODE_TRANSPARENT);
ucg.clearScreen();
ucg.setFont(ucg_font_ncenR14r);
ucg.setColor(255, 0, 255);
ucg.setColor(1, 255, 0,0);

  ucg.setRotate90();
  ucg.setColor(255, 255, 255); // culoare alba
  ucg.drawFrame(0,0,320,240); //   
  ucg.setFont(ucg_font_courB24); // 20 pixel height
  ucg.setColor(255, 0, 0); // culoare rosie
  ucg.setPrintPos(60,30);
  ucg.print("Ministatie");
  ucg.setColor(0, 255, 0); // culoare verde
  ucg.setColor(0, 255, 0);
  ucg.setColor(0, 0, 255); // culoare albastru
  ucg.setPrintPos(20, 60);
  ucg.print("meteo cu DHT11");
  ucg.setPrintPos(60, 90);
  ucg.setColor(0, 255, 0); // culoare verde
  ucg.print("si DS18B20");
  ucg.setFont(ucg_font_fur17r); // 17 pixel height
  ucg.setColor(255, 255, 0); // culoare galbena
  ucg.setPrintPos(25,120);
  ucg.print("ecran grafic 2,2'' (5,6cm)");
  ucg.setFont(ucg_font_courB24); // 20 pixel height 
  ucg.setColor(0, 255, 255); // culoare bleo
  ucg.setPrintPos(10,150);
  ucg.print("QVGA cu ILI9341");
  ucg.setColor(255, 0, 255); // culoare mov
  ucg.setPrintPos(40,180);
  ucg.print("versiune 4.0");
  ucg.setFont(ucg_font_fur17r); // 17 pixel height
  ucg.setColor(255, 255, 255); // culoare alb
  ucg.setPrintPos(60,210);
  ucg.print("realizat de niq_ro");

delay(5000);
ucg.clearScreen();
t13=40.0;
h12=40.0;
}

void loop(void) {
 // DHT11 part
 int h11 = dht.readHumidity();
  
 //DS18B20 part 
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius;
if ( !ds.search(addr)) {
    ds.reset_search();
    ics=0;
    return;
  }
ics++; 

ds.reset();
ds.select(addr);
ds.write(0x44, 1);        // start conversion, with parasite power on at the end
delay(1000);     // maybe 750ms is enough, maybe not
  present = ds.reset();
  ds.select(addr);    
  ds.write(0xBE);         // Read Scratchpad
  for ( i = 0; i < 9; i++) {           // we need 9 bytes
  data[i] = ds.read();
  }
  // Convert the data to actual temperature
  int16_t raw = (data[1] << 8) | data[0];
  if (type_s) {
    raw = raw << 3; // 9 bit resolution default
    if (data[7] == 0x10) {
      // "count remain" gives full 12 bit resolution
      raw = (raw & 0xFFF0) + 12 - data[6];
    }
  } else {
    byte cfg = (data[4] & 0x60);
    if (cfg == 0x00) raw = raw & ~7;  // 9 bit resolution, 93.75 ms
    else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
    else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
    //// default is 12 bit resolution, 750 ms conversion time
  }
t12 = (float)raw / 16.0;

int t15 = t12;
float t16 = 10*t15;
t16 = t16/10;

t16 = t12;
if (t16 != t13) 
{
temperaturi(t16, t13, 20, 0); 
termometre(t16, 20);
}

if (h11 != h12) 
{
 umiditate(h11, h12, 115, 90); // humidity, x, y
 sticla(h11, h12);
}

//}
delay (2000); 
t13=t16;
h12=h11;
} // final de program, se revine de la inceput

void temperaturi(float t3, float t4, int ics, int igrec)
{
int t5 = t3;
int t6 = t4;
ucg.setFont(ucg_font_courB24);    
if (t3*t4 < 0)
{ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
 ucg.drawHLine(ics+7, qy + igrec , 105);
}
}
int t51 = t5/10;
int t61 = t6/10;
ucg.setColor(0, 0, 0); 
if (t51 != t61)
{
for (int qy = 39 ; qy < 60; qy++) 
{
ucg.drawHLine(ics+28, qy + igrec , 21);
}
}
t5 = t3 - t51*10;
t6 = t4 - t61*10;
if (t5 != t6)
{
for (int qy = 39 ; qy < 60; qy++) 
{
ucg.drawHLine(ics+49, qy + igrec , 21);
}
} 
for (int qy = 39 ; qy < 60; qy++) 
{
 ucg.drawHLine(ics+91, qy + igrec , 21);
}
if (igrec <30) ucg.setColor(255, 0, 0);  
else ucg.setColor(0, 0, 255);  
ucg.setPrintPos(10 + ics, 30 + igrec);
//ucg.print("t  :"); 
ucg.print("temperatura:"); 
ucg.setPrintPos(10 + ics, 60 + igrec);
if (t3 > 10.0) ucg.print("+");
else
 if (t3>0.0) ucg.print(" +");
else
 if (t3<0.0)
{
 t3=-t3;
 if (t3 > 10.0) ucg.print("-");
else
 if (t3 > 0.0) ucg.print(" -");
}  
if (t3==0.0) ucg.print("  ");
ucg.print(t3,1); 
ucg.print(" C"); 
ucg.setFont(ucg_font_fur17r); 
ucg.setPrintPos(30 + ics, 35 + igrec);
//if (igrec == 0) ucg.print("int"); 
//else ucg.print("ext"); 
ucg.setPrintPos(115 + ics, 50 + igrec);
ucg.print("o"); 
}

void termometre (float t, int ics1)
{
ucg.setColor(255, 255, 255);  
ucg.drawFrame(ics1-4,10,9,200); 
ucg.drawCircle(ics1,220,10,UCG_DRAW_ALL);  
for (int a = 0; a < 10; a++)
{
ucg.drawLine(ics1-5,20+20*a,ics1-7,20+20*a);
ucg.drawLine(ics1+5,20+20*a,ics1+7,20+20*a);
}
ucg.drawLine(ics1-10,140,ics1+10,140);  
ucg.setFont(ucg_font_courB24);    
ucg.setPrintPos(13 + ics1, 149);
ucg.print("0 C"); 
ucg.setFont(ucg_font_fur17r); 
ucg.setPrintPos(37 + ics1, 135);
ucg.print("o"); 
int lin = 140 - 2*t;
ucg.setColor(0, 0, 0);  // black 
ucg.drawBox(ics1-2,21, 5, lin+5);
if (ics1 <30) ucg.setColor(255, 0, 0);  
else ucg.setColor(0, 0, 255);  
ucg.drawDisc(ics1,220,8,UCG_DRAW_ALL);  
ucg.drawBox(ics1-2,lin, 5, 210-lin);
}

void umiditate(int h3, int h4, int zet, int igrec1)
{
  ucg.setFont(ucg_font_courB24); // 20 pixel height   

// sterg semnul ??
int h51 = h3/10;
int h61 = h4/10;

ucg.setColor(0, 0, 0); 

// sterg zeci daca e cazul
if (h51 != h61)
{
//ucg.setColor(255, 255, 0); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
//  ucg.drawHLine(zet+28, qy + igrec1 , 21);
  ucg.drawHLine(zet+10, qy + igrec1, 42);
}
}
  int h5 = h3 - h51*10;
  int h6 = h4 - h61*10;

// sterg unitati daca e cazul
//if ((t5 != t6) || (t5-t6>0.2))
if (h5 != h6)
{
//ucg.setColor(0, 255, 0); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(zet+49, qy + igrec1 , 21);
}
} 

 ucg.setColor(0, 255, 255);  
 ucg.setPrintPos(zet, 30 + igrec1);
 ucg.print("umiditate:"); 


//ucg.setFont(ucg_font_fub42n); // 20 pixel height   
ucg.setPrintPos(10 + zet, 60 + igrec1);
if (h3 > 10) ucg.print("+");
else
{
//ucg.setColor(255, 255, 0); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(zet+10, qy + igrec1 , 42);
}
if (igrec1 <30) ucg.setColor(255, 255, 0);  
else ucg.setColor(0, 255, 255); 
ucg.setPrintPos(31 + zet, 60 + igrec1);
ucg.print("+");
}
 ucg.print(h3); 
 ucg.print("%"); 
}

void sticla (int h, int h2)
{
  int xmax = 319;
  int ymax = 239;
  int raza = 98; 
//  h = 45; // pentru teste
  ucg.setColor(255, 255, 255);  
  ucg.drawCircle(319,239,100,UCG_DRAW_UPPER_LEFT);  // desenez arc de cerc in stanga sus

  ucg.setColor(0, 0, 255);  
  ucg.drawHLine(220, 239, 100); // desenez linia de 0% (orizontala)
  ucg.setColor(255, 0, 0);  
  ucg.drawVLine(319, 140, 100); // desenez linia de 100% (verticala)
  
  //calculez coordonate
  int xa=100*cos(2*h2*0.9*3.14/360);
  int ya=100*sin(2*h2*0.9*3.14/360);  
  int xn=100*cos(2*h*3.14*0.9/360);
  int yn=100*sin(2*h*3.14*0.9/360);  
  //sterg indicatia anterioara
  ucg.setColor(0, 0, 0);  
  ucg.drawLine(xmax-xa, ymax-ya, xmax, ymax); // 
  //desenez indicatia noua
  ucg.setColor(0, 255, 255);  
  ucg.drawLine(xmax-xn, ymax-yn, xmax, ymax); // 
}

Ulterior am modificat sketch-ul inlocuind indicatorul acele pe sfert de cerc cu o "baterie":

iar filmul care prezinta modul de afisare si anumite cazuri se numeste ministatie meteo cu DHT11 si DS18B20 pe ecran TFT de 2.2" cu ILI9341 (2)

5.8.2014
Am scos semnul "+" de la umiditate si am schimbat "bateria" cu o barcuta cu vele, care pluteste ce o apa, a carei nivel este proportional cu umiditatea...

dupa cum se vede si in filmuletul ministatie meteo cu DHT11 si DS18B20 pe ecran TFT de 2.2" cu ILI9341 (3)

Sketch-ul folosit la versiunea 4.1.2 este:

/*
original sketch by niq_ro from http://nicuflorica.blogspot.com using ucglib library
version for 2.2" TFT with ILI9341  - 2014.07.29, Craiova - Romania
use Universal uC Color Graphics Library from https://code.google.com/p/ucglib/
*/
#include <SPI.h>
#include "Ucglib.h"
//Ucglib_ILI9341_18x240x320_HWSPI ucg(/*cd=*/ 6 , /*cs=*/ 5, /*reset=*/ 4); // at Uno
Ucglib_ILI9341_18x240x320_HWSPI ucg(/*cd=*/ 26 , /*cs=*/ 24, /*reset=*/ 22); // at Mega
/*
Mega | Uno | TFT - ILI9341
----------------------
D22  | D4  | RESET
D24  | D5  | CS
D26  | D6  | D/C
 ?   | ?   | LED (via 220 ohms resistor at 5V)
D51  | D11 | MOSI
D50  | D12 | MISO
D52  | D13 | SCK
-----------------------------
with CD4050 adapter or 10k resistor, power supply and logical levels is 3.3V
schematic: http://nicuflorica.blogspot.ro/2014/07/afisaj-grafic-color-qvga-de-22-cu.html
*/

#include <OneWire.h>
OneWire  ds(10);  // on pin 10 (a 4.7K resistor is necessary)  
int ics =0; //count number of sensor

#include "DHT.h"
#define DHTPIN A0     // what pin we're connected to
#define DHTTYPE DHT11   // DHT 11 
DHT dht(DHTPIN, DHTTYPE);

float t1, t2;
float t10, t20;
float t11, t21;
float t12, t22;
float t13, t23;
int h11, h12;

void setup(void) {
delay(1000);
dht.begin();
ucg.begin(UCG_FONT_MODE_TRANSPARENT);
ucg.clearScreen();
ucg.setFont(ucg_font_ncenR14r);
ucg.setColor(255, 0, 255);
ucg.setColor(1, 255, 0,0);

  ucg.setRotate90();
  ucg.setColor(255, 255, 255); // culoare alba
  ucg.drawFrame(0,0,320,240); //   
  ucg.setFont(ucg_font_courB24); // 20 pixel height
  ucg.setColor(255, 0, 0); // culoare rosie
  ucg.setPrintPos(60,30);
  ucg.print("Ministatie");
  ucg.setColor(0, 255, 0); // culoare verde
  ucg.setColor(0, 255, 0);
  ucg.setColor(0, 0, 255); // culoare albastru
  ucg.setPrintPos(20, 60);
  ucg.print("meteo cu DHT11");
  ucg.setPrintPos(60, 90);
  ucg.setColor(0, 255, 0); // culoare verde
  ucg.print("si DS18B20");
  ucg.setFont(ucg_font_fur17r); // 17 pixel height
  ucg.setColor(255, 255, 0); // culoare galbena
  ucg.setPrintPos(25,120);
  ucg.print("ecran grafic 2,2'' (5,6cm)");
  ucg.setFont(ucg_font_courB24); // 20 pixel height 
  ucg.setColor(0, 255, 255); // culoare bleo
  ucg.setPrintPos(10,150);
  ucg.print("QVGA cu ILI9341");
  ucg.setColor(255, 0, 255); // culoare mov
  ucg.setPrintPos(20,180);
  ucg.print("versiune 4.1.2");
  ucg.setFont(ucg_font_fur17r); // 17 pixel height
  ucg.setColor(255, 255, 255); // culoare alb
  ucg.setPrintPos(60,210);
  ucg.print("realizat de niq_ro");

delay(5000);
ucg.clearScreen();
t13=40.0;
h12=40.0;
}

void loop(void) {
 // DHT11 part
 int h11 = dht.readHumidity();
  
 //DS18B20 part 
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius;
if ( !ds.search(addr)) {
    ds.reset_search();
    ics=0;
    return;
  }
ics++; 

ds.reset();
ds.select(addr);
ds.write(0x44, 1);        // start conversion, with parasite power on at the end
delay(1000);     // maybe 750ms is enough, maybe not
  present = ds.reset();
  ds.select(addr);    
  ds.write(0xBE);         // Read Scratchpad
  for ( i = 0; i < 9; i++) {           // we need 9 bytes
  data[i] = ds.read();
  }
  // Convert the data to actual temperature
  int16_t raw = (data[1] << 8) | data[0];
  if (type_s) {
    raw = raw << 3; // 9 bit resolution default
    if (data[7] == 0x10) {
      // "count remain" gives full 12 bit resolution
      raw = (raw & 0xFFF0) + 12 - data[6];
    }
  } else {
    byte cfg = (data[4] & 0x60);
    if (cfg == 0x00) raw = raw & ~7;  // 9 bit resolution, 93.75 ms
    else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
    else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
    //// default is 12 bit resolution, 750 ms conversion time
  }
t12 = (float)raw / 16.0;

int t15 = t12;
float t16 = 10*t15;
t16 = t16/10;

t16 = t12;
if (t16 != t13) 
{
temperaturi(t16, t13, 20, 0); // temperature, old temperature, x,y
termometre(t16, 20);
}

if (h11 != h12) 
{
 umiditate(h11, h12, 115, 90); // humidity, old humidity x, y
 barca (h11, h12);
}

//}
delay (2000); 
t13=t16;
h12=h11;
} // final de program, se revine de la inceput

void temperaturi(float t3, float t4, int ics, int igrec)
{
int t5 = t3;
int t6 = t4;
ucg.setFont(ucg_font_courB24);    
if (t3*t4 < 0)
{ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
 ucg.drawHLine(ics+7, qy + igrec , 105);
}
}
int t51 = t5/10;
int t61 = t6/10;
ucg.setColor(0, 0, 0); 
if (t51 != t61)
{
for (int qy = 39 ; qy < 60; qy++) 
{
ucg.drawHLine(ics+28, qy + igrec , 21);
}
}
t5 = t3 - t51*10;
t6 = t4 - t61*10;
if (t5 != t6)
{
for (int qy = 39 ; qy < 60; qy++) 
{
ucg.drawHLine(ics+49, qy + igrec , 21);
}
} 
for (int qy = 39 ; qy < 60; qy++) 
{
 ucg.drawHLine(ics+91, qy + igrec , 21);
}
if (igrec <30) ucg.setColor(255, 255, 0);  
else ucg.setColor(0, 0, 255);  
ucg.setPrintPos(10 + ics, 30 + igrec);
//ucg.print("t  :"); 
ucg.print("temperatura:"); 
ucg.setPrintPos(10 + ics, 60 + igrec);
if (t3 > 10.0) ucg.print("+");
else
 if (t3>0.0) ucg.print(" +");
else
 if (t3<0.0)
{
 t3=-t3;
 if (t3 > 10.0) ucg.print("-");
else
 if (t3 > 0.0) ucg.print(" -");
}  
if (t3==0.0) ucg.print("  ");
ucg.print(t3,1); 
ucg.print(" C"); 
ucg.setFont(ucg_font_fur17r); 
ucg.setPrintPos(30 + ics, 35 + igrec);
//if (igrec == 0) ucg.print("int"); 
//else ucg.print("ext"); 
ucg.setPrintPos(115 + ics, 50 + igrec);
ucg.print("o"); 

ucg.setPrintPos(75 + ics, 60 + igrec);
ucg.print(",");


}

void termometre (float t, int ics1)
{
ucg.setColor(255, 255, 255);  
ucg.drawFrame(ics1-4,10,9,200); 
ucg.drawCircle(ics1,220,10,UCG_DRAW_ALL);  
for (int a = 0; a < 10; a++)
{
ucg.drawLine(ics1-5,20+20*a,ics1-7,20+20*a);
ucg.drawLine(ics1+5,20+20*a,ics1+7,20+20*a);
}
ucg.drawLine(ics1-10,140,ics1+10,140);  
ucg.setFont(ucg_font_courB24);    
ucg.setPrintPos(13 + ics1, 149);
ucg.print("0 C"); 
ucg.setFont(ucg_font_fur17r); 
ucg.setPrintPos(37 + ics1, 135);
ucg.print("o"); 
int lin = 140 - 2*t;
ucg.setColor(0, 0, 0);  // black 
ucg.drawBox(ics1-2,21, 5, lin+5);
if (ics1 <30) ucg.setColor(255, 0, 0);  
else ucg.setColor(0, 0, 255);  
ucg.drawDisc(ics1,220,8,UCG_DRAW_ALL);  
ucg.drawBox(ics1-2,lin, 5, 210-lin);
}

void umiditate(int h3, int h4, int zet, int igrec1)
{
  ucg.setFont(ucg_font_courB24); // 20 pixel height   

// sterg semnul ??
int h51 = h3/10;
int h61 = h4/10;

ucg.setColor(0, 0, 0); 

// sterg zeci daca e cazul
if (h51 != h61)
{
//ucg.setColor(255, 255, 0); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
//  ucg.drawHLine(zet+28, qy + igrec1 , 21);
  ucg.drawHLine(zet+40, qy + igrec1, 42);
}
}
  int h5 = h3 - h51*10;
  int h6 = h4 - h61*10;

// sterg unitati daca e cazul
//if ((t5 != t6) || (t5-t6>0.2))
if (h5 != h6)
{
//ucg.setColor(0, 255, 0); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(zet+79, qy + igrec1 , 21);
}
} 

 ucg.setColor(0, 255, 255);  
 ucg.setPrintPos(zet, 30 + igrec1);
 ucg.print("umiditate:"); 


//ucg.setFont(ucg_font_fub42n); // 20 pixel height   
ucg.setPrintPos(40 + zet, 60 + igrec1);
//if (h3 > 10) ucg.print("+");
if (h3 > 10) ucg.print(" ");
else
{
//ucg.setColor(255, 255, 255); 
ucg.setColor(0, 0, 0); 
for (int qy = 39 ; qy < 60; qy++) 
{
  ucg.drawHLine(zet+40, qy + igrec1 , 42);
}
if (igrec1 <30) ucg.setColor(255, 255, 0);  
else ucg.setColor(0, 255, 255); 
ucg.setPrintPos(61 + zet, 60 + igrec1);
//ucg.print("+");
ucg.print(" ");
}
 ucg.print(h3); 
 ucg.print("%"); 
}


void barca (int h, int h2) // new humidity, old humidity.,
{
 
int xx = 280; 
int yy = 230;
//sterg barca
//ucg.setColor(100,100,100);  
ucg.setColor(0,0,0);  
ucg.drawBox(xx-25, yy-20-h2, 50, 30);


//sterg apa
//ucg.setColor(125, 125, 125);  
ucg.setColor(0, 0, 0);  
ucg.drawBox(xx-35, yy+10-h2, 70, h2-h);

//desenez apa
ucg.setColor(0, 255, 255);  
ucg.drawBox(xx-35, yy+10-h, 70, h);

//desenz barcuta;
//desenez carena
ucg.setColor(255, 255, 0);  
ucg.drawBox(xx-20, yy-h, 40, 10);
ucg.drawTriangle(xx-25, yy-h, xx-20, yy-h, xx-20, yy+10-h);
ucg.drawTriangle(xx+25, yy-h, xx+20, yy-h, xx+20, yy+10-h);
//desenez catarg
ucg.drawBox(xx-1, yy-20-h, 2, 20);
//desenez velele
ucg.setColor(0, 0, 255); // vela albastra  
ucg.drawTriangle(xx+2, yy-20-h, xx+2, yy-h, xx+20, yy-h);
ucg.setColor(255, 0, 0); // vela rosie  
ucg.drawTriangle(xx-2, yy-15-h, xx-2, yy-h, xx-20, yy-h);
}

6.8.2014
Am facut un alt filmulet, cu lumina ambianta mai multa, pentru a se mai defocaliza camera, numit ministatie meteo cu DHT11 si DS18B20 pe ecran TFT de 2.2" cu ILI9341 (4)