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Interface LED With ARM7

Description

Led have two pins, Anode(+) and Cathode(-), Anode connected with ARM7 lpc21xx P1.0 pin and Cathode is connected with 5v in Series with 220 ohms resistor.

Hardware Required

  • LED.
  • LPC21xx MicroController.

Circuit

Code

 #include <LPC21xx.H>
 void delay()
 {
 int i;
 for(i=0;i<100000;i++);
 }
 int main()
 {
 IODIR0=0XFFFFFFFF;
 while(1)
 {
 IOPIN P0=0XFFFFFFF0;
 delay();
 IOPIN P0=0XFFFFFFFF;
 delay();
 }
 } 

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