Forum: µC & Digital Electronics GPIO Ports on Keil MCB1800 with LPC1857

Author: andreas_mue (Guest)
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I try to set an GPIO Port ( P1_15 ) to high, but it does not work. I 
used the MCB1800 Board with an LPC1857 and modified the Blinky Example.

Somebody has an idea?

#include "board.h"
#include <stdio.h>
#include "stopwatch.h"

void SysTick_Handler(void)
  static int x = 0;
  if (x++ > 500) {
    x = 0;


int main(void)

        Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 1, 15);
        Chip_GPIO_SetPinOutHigh (LPC_GPIO_PORT, 1, 15);

  /* Enable and setup SysTick Timer at a periodic rate */
  SysTick_Config(SystemCoreClock / TICKRATE_HZ1);

  while (1) {

  return 0;



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