second dim function for home system

Hey There,

i'm making a home lighting system with arduino and a ethernetshield.
i can switch lights on and off with my iphone/ipad/ipod and witch pulsswithses in the wall.
and i can dim one of them, but i want to dimming more then one.
but i can get this work. can someone help me?

this is de code:
#include <SPI.h> // voor Arduino versie 0018 en hoger
#include <EthernetUdp.h> 
#include <Ethernet.h>
////////// NETWORK INFO ////////////////
byte mac[] = { 0x90, 0xa2, 0xda, 0x00, 0xf9, 0x64 }; // mac adres van deethernet shield
byte ip[] = { 192, 168, 1, 8 }; // het ip adres dat je aan je arduio wilt geven
unsigned int localPort = 7777; // de poort die je wilt gebruiken 
IPAddress iPhoneIP(192, 168, 1, 15); //ip adres van je iphone/ipad/ipod
unsigned int iPhonePort = 7777; // poort van de iphone/ipad/ipod (zelfde als localport)
///////////////// UDP Variables //////////////////
char packBuff[UDP_TX_PACKET_MAX_SIZE]; //buffer to hold incoming packet,
///////// Pin verklaring /////////////////
int LED_Pin = 6; // maakt LED_Pin van Pin 6 
const int dim_up = 7; // dim up
int dim_down = 9; //dim down
int AC_LOAD = 3; // Output to Opto Triac pin
///////// Variabelle //
int dimming = 128; // Dimming level (0-128) 0 = ON, 128 = OFF
int pwmVal = 0; // Integer that will hold our PWM values for later use
int buttonState = 0;
EthernetUDP Udp;
//-------------------------------------------------------------------------
void setup() {
Ethernet.begin(mac,ip); 
Udp.begin(localPort); 
Serial.begin(9600); 
pinMode(LED_Pin, OUTPUT); 
pinMode(AC_LOAD, OUTPUT); 
pinMode(dim_up, INPUT);
pinMode(dim_down, INPUT); 
attachInterrupt(0, zero_crosss_int, RISING); 
}
//-------------------------------------------------------------------------
void zero_crosss_int() // function to be fired at the zero crossing to dim the light
{ // Firing angle calculation :: 50Hz-> 10ms (1/2 Cycle)
int dimtime = (75*dimming); // (10000us - 10us) / 128 = 75 (Approx)
delayMicroseconds(dimtime); // Off cycle
digitalWrite(AC_LOAD, HIGH); // triac firing
delayMicroseconds(10); // triac On propogation delay
digitalWrite(AC_LOAD, LOW); // triac Off
}
//-------------------------------------------------------------------------
void loop()
{
// read the state of the pushbutton value:
buttonState = digitalRead(dim_up);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) { 
Serial.println("button higher");
dimming -= 2;
if (dimming < 20) dimming = 20;
} 
{
// read the state of the pushbutton value:
buttonState = digitalRead(dim_down);
if (buttonState == HIGH) { 
Serial.println("button lower"); 
// turn higher on: 
dimming += 2;
if (dimming > 112) dimming = 125;
}
int packetSize = Udp.parsePacket(); 
if(packetSize)
{ packetSize = packetSize - 8; // subtract 8 byte header
Udp.read(packBuff,UDP_TX_PACKET_MAX_SIZE);
if (packBuff[0] = 'P' && packBuff[1]=='W' && packBuff[2]=='M') // Wait for "PWMXXX", use XXX as PWM value
{ 
pwmVal = (packBuff[3] - '0')*100 + (packBuff[4] - '0')*10 + (packBuff[5] - '0'); 
if (pwmVal > 250) pwmVal= 250; // limit
if (pwmVal < 15) pwmVal= 15; // limit
dimming = (pwmVal>>1); // dimming = pwm / 2;
Serial.println("Dimming Waarde is: "); Serial.println(dimming); // Write notification
}
else if (packBuff[0] = 'P' && packBuff[1]=='6' && packBuff[2]=='H') // If message "P6H", set LED_Pin (6) HIGH
{ 
digitalWrite(LED_Pin,HIGH); // Turn on LED_Pin
Serial.println("LED ON"); // Write notification
Udp.beginPacket(iPhoneIP,iPhonePort);
Udp.write("LED 6 is ON"); // Send Message back to iPhone
Udp.endPacket();
}
else if (packBuff[0] = 'P' && packBuff[1]=='6' && packBuff[2]=='L') // If message "P6L", set LED_Pin (6) LOW
{ 
digitalWrite(LED_Pin,LOW); // Turn off LED_Pin
Serial.println("LED OFF"); // Write notification
Udp.beginPacket(iPhoneIP, iPhonePort);
Udp.write("LED 6 is OFF"); // Send Message back to iPhone
Udp.endPacket();
}


delay(20);


}}}

I suggest you use the code auto format tool in the IDE, then put your code in a code box when posting. You can use the "modify" to fix your post. Check the below post.

http://arduino.cc/forum/index.php/topic,148850.0.html