Documentation
For Arduino users
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
#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)
{
q0.attachPop(q0PopCallback);
dbSerialPrintln("setup done");
}
void loop(void)
{
nexLoop(nex_listen_list);
}