RFID Reader design for 125khz frequency

[DILIP371987]

I want to design a RFID reader with atmega8 microcontroller, for decoding the tag I need to develop C program to decode Manchester decoding, now I want a program which can read the tag data and send it on the COM Port. IF anybody tell me how I can use interrupt pin as a pin change interrupt pin then it will be helpful for me.

 

[FvM]

There's no pin change interrupt with ATmega8, but you can program one of the two external interrupt pins to be sensitive to both edges. See Datasheet, External Interrupts, MCU Control Register MCUR