i have problem with the led blinking. I using the exmaple program given by keil using uVision3. When i run the program, the LED on the development board didnt blink, it just stay on! wat should i do?
thanks!
"Do i need to use another port from microcontroller and connect it to RFID?"
If you want to connect the RFID directly to the microcontroller then yes; of course you will need to use some sort of "port" on the microcontroller - exactly what sort of a port will, of course, depend upon what your particular RFID requires!
"or both RFID and microcontroller connect to the same computer?"
If that's what you want then yes; you can do that!
It's your project - only you know the details of what's actually required.