Documentation: CompGauge_v0_32.ino

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CompGauge_v0_32.ino

How to Use
  This example shows that ,when the "btn_up" component on the Nextion screen is released, the value of gauge component will plus 5, when the "btn_down" component released, the value of gauge component will minus 5 every time.

Author
  Wu Pengfei (email:pengf.nosp@m.ei.w.nosp@m.u@ite.nosp@m.ad.c.nosp@m.c)

Date
  2015/7/10 2016/12/25 bring HMI up to v0.32 to avoid too old issues by Patrick Martin, no other changes made

Copyright
  Copyright (C) 2014-2015 ITEAD Intelligent Systems Co., Ltd.
  This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

#include "Nextion.h"
NexGauge pointer = NexGauge(0, 1, "pointer");
NexButton btn_up = NexButton(0, 2, "btn_up");
NexButton btn_down = NexButton(0, 3, "btn_down");
NexTouch *nex_listen_list[] =
{
&btn_up,
&btn_down,
NULL
};
void buttonUpPopCallback(void *ptr)
{
uint32_t number = 0;
dbSerialPrintln("buttonUpPopCallback");
pointer. getValue(&number);
number += 5;
if (number >= 360)
{
number = 0;
}
pointer. setValue(number);
}
void buttonDownPopCallback(void *ptr)
{
uint32_t number = 0;
dbSerialPrintln("buttonDownPopCallback");
pointer.getValue(&number);
if (number >= 5)
{
number -= 5;
}
pointer.setValue(number);
}
void setup(void)
{
nexInit();
btn_up. attachPop(buttonUpPopCallback);
btn_down.attachPop(buttonDownPopCallback);
dbSerialPrintln("setup done");
}
void loop(void)
{
nexLoop(nex_listen_list);
}