GPIO Configuration Issue on LPC1768 Microcontroller with Keil IDE

joshmarripudi — Wed, 17 Apr 2024 05:22:05 GMT

Hello,

I am working on the LPC1768 microcontroller through Keil IDE. I am just trying to set the pin P1.14 high which is connected to an LED on the development board which I am using. This is my code:

#include <lpc17xx.h> int main(void) { SystemInit(); SystemCoreClockUpdate(); LPC_PINCON->PINSEL2 &= ~((1 << 29) | (1 << 28)); LPC_GPIO1->FIODIR |= (1 << 14); LPC_GPIO1->FIOSET = (1 << 14); while (1) {} }

I generated the .hex file and loaded it onto the microcontroller's flash memory using the Flash Magic tool. However, I am unable to turn on the LED with the above code. Instead of the LED, I tried setting a different pin as a GPIO pin and setting the output high, but that didn't work either. What am I missing?

Re: GPIO Configuration Issue on LPC1768 Microcontroller with Keil IDE

Harry_Zhang — Thu, 18 Apr 2024 03:17:03 GMT

Hi @joshmarripudi

You can refer the led_blinky demo.

LPCOpen Software for LPC17XX | NXP Semiconductors

Hope this will help you.

Hang

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GPIO Configuration Issue on LPC1768 Microcontroller with Keil IDE

Re: GPIO Configuration Issue on LPC1768 Microcontroller with Keil IDE