LPC2148 LED Interfacing

 

Blinky Example – Now we repeatedly make all pins in port 0 (P0.0 to P0.30) High then Low then High and so on. You can connect Led to some or all Pins on Port 0 to see it in action. Here we will introduce some delay between making all pins High and Low so it can be noticed.

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#include <lpc214x.h>

void delay(void);

int main(void)
{
    IO0DIR = 0xFFFFFFFF; // Configure all pins on Port 0 as Output
   
    while(1)
    {
        IO0SET = 0xFFFFFFFF; // Turn on LEDs
        delay();
        IO0CLR = 0xFFFFFFFF; // Turn them off
        delay();
    }
    return 0; // normally this wont execute
}  

void delay(void)
{
    int z,c;
    c=0;
    for(z=0; z<4000000; z++) // You can edit this as per your needs
    {
        c++; // something needs to be here else KEIL compiler will remove the for loop!
    }

}

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