Case: Created page with " #include #include #include // ethernet interface mac address, must be unique on the LAN static byte mymac[..."

2013-04-08T22:32:00Z

Created page with "<source lang="cpp"> #include <Wire.h> #include <LiquidCrystal_I2C.h> #include <EtherCard.h> // ethernet interface mac address, must be unique on the LAN static byte mymac[..."

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<source lang="cpp">

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#include <EtherCard.h>

// ethernet interface mac address, must be unique on the LAN
static byte mymac[] = { 0x74,0x69,0x69,0x2D,0x30,0x31 };
static byte myip[] = { 192,168,178,4 };

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

// word len;
// word pos;

LiquidCrystal_I2C lcd(0x20,8,2); // set the LCD address to 0x20 for a 16 chars and 2 line display

const int s1 = 10; // the number of the pushbutton pin
const int s2 = 9; // the number of the pushbutton pin

// Referenzwert zur Multiplikation mit den Werten der Analogports (0...1023),
// um auf die Voltzahl zu kommen (0...5).
// Ergibt sich aus 5/1024. (d.h., Systemspanung / Bit-Auflösung)
// z.B. const float referenzwert = 0.0048828125; // Referenzwert in Volt
// oder const float referenzwert = 4.8828125; // Referenzwert in mV
const float Usys = 5.16; // Systemspannung an AVR-NetIO mit PC-Netzteil
// const float Usys = 4.89; // Systemspannung an Arduino-Mega mit USB-Stromversorgung
float referenzwert = Usys/1024*1000; // Referenzwert in mV

#define PINUbatt 13 // Analog PIN Batteriespannung
#define PINUDS 14 // Analog PIN Spannungsabfall am FET (Drain-Source)
#define PINRelais 15 // Digital PIN Relais oder MOSFET
#define PINStart 9 // Digital PIN Startknopf
#define PINStart2 10 // Digital PIN Startknopf

#define Umin 950 // mV Spannung bei der Entladung abgebrochen wird
#define INTERVAL 2000 // Zeit fuer Schleife

// div. Globals
long loopTime = INTERVAL;
long loopUsedTime = INTERVAL;
long loopStart = 0;
long uhrzeit = 0;
long verstrichen = 0;
float U = 0;
float Ufet = 0;
float Udiff = 0;
float Uopen = 0;
float I = 0;
float P = 0;
float Q = 0;
float Ah = 0;
float Rlast = 1.5; // Lastwiderstand zur Entladung
float Rbat = 0; // Innenwiderstand der Batterie

long loopCount = 0;
boolean start = false;
boolean ende = false;

void setup() {
//Serial.begin(19200);
pinMode(PINRelais, OUTPUT);
pinMode(PINStart, INPUT); // Start Taster
//digitalWrite(PINStart, HIGH); // je nachdem, ob High- oder Low-aktiver Button
digitalWrite(PINStart, LOW);

digitalWrite(PINRelais,LOW); // Relais bzw. Mosfet aus

lcd.init(); // initialize the lcd

if (ether.begin(sizeof Ethernet::buffer, mymac,28) == 0)
{
// Serial.println( "Failed to access Ethernet controller");
lcd.setCursor(0,0);
lcd.print("eth0 failed");
delay(1000);
lcd.clear();
}
ether.staticSetup(myip);

// Print a message to the LCD.
lcd.setCursor(0,0);
lcd.print("Kap-tester V.005");
lcd.setCursor(0,1);
lcd.print("by OS 04/2013");
delay(2000);
lcd.clear();

Uopen = analogRead(PINUbatt)*referenzwert; // in mV

}

void loop() {

// start = true; // Für (Batterie-)Messung bis zum bitteren Ende, d.h. Tiefentladung

// erstmal Spannung messen - solange der Starttknopf nicht gedrueckt wurde - nach dem Test auch wieder hier rein...
while (start==false)
{
U = analogRead(PINUbatt)*referenzwert; // in mV
Uopen = U;
//print_ser();
print_lcd();
//if (digitalRead(PINStart)==LOW) {
if (digitalRead(PINStart)==HIGH) {
start = true;
ende = false;
}

uhrzeit = millis();
verstrichen = millis()-uhrzeit;

while(verstrichen < INTERVAL-10)
{
word len = ether.packetReceive();
word pos = ether.packetLoop(len);
if (pos) // check if valid tcp data is received
ether.httpServerReply(homePage()); // send web page data

verstrichen = millis()-uhrzeit;
} // end of while

//delay(2000);
} // end of while

digitalWrite(PINRelais,HIGH); // Relais ein

loopStart = millis();

U = analogRead(PINUbatt)*referenzwert; // in mV
Ufet = analogRead(PINUDS)*referenzwert; // in mV
Udiff = U-Ufet;

//I = Udiff/1.5; // in mA
//I = U-Ufet/1.5; // in mA Achtung: Falsche Schreibweise !!! Punkt vor Strichrechnung !!!
I = Udiff/Rlast; // in mA

// Leistung
P = (I*U)/1000; // in mW
Q += P * loopTime / 3600 / 1000; // in mWh

// Kapazität in mAh
Ah += I * loopTime / 3600 / 1000; // in mAh

// Innenwiderstand der Batterie
Rbat = (Uopen - U) / I;

//print_ser();
print_lcd();

if(U <= Umin) { // wenn Batteriespannung unter eingest. Mindestspannung faellt
digitalWrite(PINRelais,LOW); // Test abbrechen
start = false;
//Serial.println("Stop");
ende = true;
}

loopCount++;
loopUsedTime = millis()-loopStart;

while(loopUsedTime < INTERVAL-10)
{
word len = ether.packetReceive();
word pos = ether.packetLoop(len);
if (pos) // check if valid tcp data is received
ether.httpServerReply(homePage()); // send web page data

loopUsedTime = millis()-loopStart;
} // end of while

loopTime = millis() - loopStart;

}

void print_lcd() {
lcd.clear();
lcd.print(U/1000,2); // Spannung in Volt anzeigen
lcd.print("V");
lcd.setCursor(6,0);
format_print(I);
lcd.print("mA");
lcd.setCursor(13,0);
if (start==false && ende == false) lcd.print("STA"); // ST - Startknopf druecken
if (start==true) lcd.print("RUN"); // RU - Test runnig...
if (ende==true) lcd.print(" END"); // E - Test Ende
lcd.setCursor(0,1);
format_print(Q);
lcd.print("mWh");

/* lcd.setCursor(10,1);
//lcd.print(Ufet/1000,4);
lcd.print(Udiff/1000,4);
*/

lcd.setCursor(11,1);
lcd.print(loopCount/(60000/INTERVAL));
lcd.print(":");
if(((loopCount%(60000/INTERVAL))*INTERVAL/1000)<10) lcd.print("0");
lcd.print((loopCount%(60000/INTERVAL))*INTERVAL/1000);

}

void format_print (float value){ // in Ausgabe passende Anzahl Spaces einfuegen - 4stellige Zahl
if (value < 1000)lcd.print(" ");
if (value < 100) lcd.print(" ");
if (value < 10) lcd.print(" ");
lcd.print(value,0);
}

//void print_ser() {
// Serial.print(loopCount/(60000/INTERVAL));
// Serial.print(":");
// if(((loopCount%(60000/INTERVAL))*INTERVAL/1000)<10) Serial.print("0");
// Serial.print((loopCount%(60000/INTERVAL))*INTERVAL/1000);
// Serial.print(" ");
// Serial.print((int)U); Serial.print(" mV ");
// Serial.print((int)Ufet); Serial.print(" mV ");
// Serial.print((int)I); Serial.print(" mA ");
// Serial.print((int)P); Serial.print(" mW ");
// Serial.print((int)Q); Serial.println(" mAh");
//}

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

word Up = U;
word Ip = I;
word Qp = Q;
word Ap = Ah;
word Rp = Rbat;

bfill = ether.tcpOffset();
bfill.emit_p(PSTR(
"HTTP/1.0 200 OK\r\n"
"Content-Type: text/html\r\n"
"Pragma: no-cache\r\n"
"\r\n"
"<meta http-equiv='refresh' content='10'/>"
"<title>Kapazitaetslogger</title>"
// "<h1>$D$D:$D$D:$D$D <br><br> $DmV $DmA $DmAh</h1>"),
"<h1>$D$D:$D$D:$D$D $D $D $D $D $D </h1>"),
h/10, h%10, m/10, m%10, s/10, s%10, Up, Ip, Qp, Ap, Rp);
return bfill.position();
}

</source>

ZACmeter-Anwendungsprogram - Versionsgeschichte

Case: Created page with " #include #include #include // ethernet interface mac address, must be unique on the LAN static byte mymac[..."