Documentation: CompCrop_v0_32.ino

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CompCrop_v0_32.ino

How to Use
  This example shows that when the crop component on the Nextion screen is released, the image of this component will be changed.

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"
/*
* Declare a crop object [page id:0,component id:1, component name: "q0"].
*/
NexCrop q0 = NexCrop(0, 1, "q0");
NexTouch *nex_listen_list[] =
{
&q0,
NULL
};
/*
* Crop component pop callback function.
* In this example,the image of current crop component will be changed every time when it is released.
*/
void q0PopCallback(void *ptr)
{
uint32_t number = 0;
dbSerialPrintln("q0PopCallback");
q0. getPic(&number);
number += 1;
number %= 2;
q0. setPic(number);
}
void setup(void)
{
nexInit();
q0. attachPop(q0PopCallback);
dbSerialPrintln("setup done");
}
void loop(void)
{
nexLoop(nex_listen_list);
}