RFID sprejemna elektronika

RFID sprejemna elektronika

Frequency: 125KHZ
– Baud rate: 9600
– Interface: TTL level RS232 format
– Working voltage: DC 5V(+/-5%)
– Working current: <50mA - Receive distance: 20~50mm - Working temperature: -10°C~+70°C - Storage temperature: -20°C~+80°C - Humidity: 0~95% - Wiring size: 46*32*3mm - PCB size: 38.5*19*9mm
String comdata = “”;
void setup()
{
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
digitalWrite(2,HIGH);
digitalWrite(3,HIGH);
Serial.begin(9600);
}
void loop()
{
digitalWrite(2,HIGH);
digitalWrite(3,HIGH);
while (Serial.available() > 0)
{
comdata += char(Serial.read());
delay(2);
}
if(comdata.length() > 0&&comdata==”0500ADDF1443″)
{
while( comdata.length() > 0 )
{
digitalWrite(3,LOW);
delay(100);
while (Serial.available() > 0)
{
comdata += char(Serial.read());
delay(2);
}
comdata = “”;
}
}
else if (comdata.length() > 0)
{
while(comdata.length() > 0)
{
digitalWrite(2,LOW);
delay(100);
while (Serial.available() > 0)
{
comdata += char(Serial.read());
delay(2);
}
comdata = “”;
}
}
}