Nextion button how to run a function

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1

Hi guys
I am a noob in arduino
now i want to write a simple code to control LED from nextion

#include "NexButton.h"
#include "NexText.h"

NexButton b0 = NexButton(0, 1, "b0");

char buffer[100] = {0};

NexTouch *nex_Listen_List[] =
{
&b0,
NULL
};

/**

  • Button to return the response.
  • @param ptr - the parameter was transmitted to pop event function pointer.

*/
void b0PopCallback(void *ptr)
{
NexButton *btn = (NexButton *)ptr;
memset(buffer, 0, sizeof(buffer));
btn->getText(buffer, sizeof(buffer));
if (strcmp(buffer,"ON"))
{
aaa();
strcpy(buffer, "ON");
}
else
{
digitalWrite(13, LOW);
strcpy(buffer, "OFF");
}
btn->setText(buffer);

}

void setup(void)
{
nexInit();
b0.attachPop(b0PopCallback, &b0);

//setting port OUTPUT
pinMode(13, OUTPUT);

digitalWrite(13, LOW);

}

void loop(void)
{
nexLoop(nex_Listen_List);

}

void aaa() {
digitalWrite(13, HIGH); // turn the LED on (HIGH is the voltage level)
delay(100); // wait for a second
digitalWrite(13, LOW); // turn the LED off by making the voltage LOW
delay(100); // wait for a second
}

I use button source code from here

I don't know why "aaa" can't run well
could somebody teach me how to put function in that.

sorry for my poor English

2

Did you get the original example to toggle an LED before modifying it?

lmt5108:
I don't know why "aaa" can't run well

Can you explain more on what does and does not work?

You're using code to read a button's label and if it is "ON" then you QUICKLY toggle an LED

delay(100);                       // wait for a second

This will only flash the LED for 1/10th of a second, not a whole second. Perhaps too short for debugging purposes.