topic Re: Problem with LED blinking LPC11e14 in LPC Microcontrollers

Problem with LED blinking LPC11e14

lpcware — Wed, 15 Jun 2016 19:37:45 GMT

Content originally posted in LPCWare by drvrh on Thu Aug 20 03:05:34 MST 2015
Hello,

I have a problem with LED blinking and my LPC11e14, programming it's OK but on my ouput pin
have nothing. On all IO pin have voltage 3.2.

Code in attach
and schematic without crystal and WAKEUP pin not connected.

I don't know where is my problem.

And why I don't have options for run debug? Step into have grey and resume too.

Original Attachment has been moved to: test_4.zip

Re: Problem with LED blinking LPC11e14

lpcware — Wed, 15 Jun 2016 19:37:45 GMT

Content originally posted in LPCWare by Badman on Thu Aug 20 04:45:39 MST 2015
If crystal is not connected you must write a function SystemInit or comment out the call to SystemInit in function ResetISR in file test\src\cr_startup_lpc11exx.c

#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
    SystemInit();
#endif

change on

#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
    //SystemInit();
#endif

Re: Problem with LED blinking LPC11e14

lpcware — Wed, 15 Jun 2016 19:37:46 GMT

Content originally posted in LPCWare by drvrh on Thu Aug 20 05:43:33 MST 2015
Thank you for answer.

Now I wouldl ike set IOCON pin 0.23 but I cann't set pin for GPIO.

How I set? If I set with

GPIOInit();
GPIOSetDir(0, 23, 1);
GPIOSetBitValue(0, 23, 1);

have no effect.

I set too with:

LPC_SYSCON -> SYSAHBCLKCTRL |= (1 << 16);
LPC_IOCON -> PIO0_23 |= (1 << 0x0);
GPIOInit();
....

No effect. How I set this pin for GPIO?

Re: Problem with LED blinking LPC11e14

lpcware — Wed, 15 Jun 2016 19:37:47 GMT

Content originally posted in LPCWare by Badman on Thu Aug 20 07:11:59 MST 2015
Check this code

#include "LPC11Exx.h"

void delay(void)
{
volatile uint32_t i, j;

for (i = 0; i < 1000000; i++ )
j++;
}

int main(void) {

LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6);// enable GPIO
LPC_GPIO->DIR[0] |= (1<<23);// P0.23 output

    while(1) {
    LPC_GPIO->SET[0] = (1<<23);// P0.23 high
    delay();

    LPC_GPIO->CLR[0] = (1<<23);// P0.23 low
    delay();
    }
    return 0 ;
}

Re: Problem with LED blinking LPC11e14

lpcware — Wed, 15 Jun 2016 19:37:47 GMT

Content originally posted in LPCWare by drvrh on Thu Aug 20 22:58:29 MST 2015
Thank you.

Re: Problem with LED blinking LPC11e14

athmesh_n — Wed, 09 Jan 2019 11:10:55 GMT

Hi @Badman

If systeminit is commented out, then how will clock be initialized? for internal clockircclock must be PLLed.

Thanks and Regards,

Athmesh Nandakumar