CompNumber_v0_32.ino
#include "Nextion.h"
void n0PopCallback(void *ptr);
void b0PopCallback(void *ptr);
void b1PopCallback(void *ptr);
/*
* Declare a number object [page id:0,component id:3, component name: "n0"].
*/
NexNumber n0 = NexNumber(0, 3, "n0");
/*
* Declare a button object [page id:0,component id:1, component name: "b0"].
*/
NexButton b0 = NexButton(0, 1, "b0");
/*
* Declare a button object [page id:0,component id:2, component name: "b1"].
*/
NexButton b1 = NexButton(0, 2, "b1");
char buffer[100] = {0};
/*
* Register object n0, b0, b1, to the touch event list.
*/
NexTouch *nex_listen_list[] =
{
&n0,
&b0,
&b1,
NULL
};
/*
* number component pop callback function.
*/
void n0PopCallback(void *ptr)
{
dbSerialPrintln("n0PopCallback");
n0.setValue(50);
}
/*
* Button0 component pop callback function.
* In this example,the value of the number component will plus one every time when button0 is released.
*/
void b0PopCallback(void *ptr)
{
uint32_t number;
dbSerialPrintln("b0PopCallback");
n0.getValue(&number);
number += 1;
n0.setValue(number);
}
/*
* Button1 component pop callback function.
* In this example,the value of the number component will minus one every time when button1 is released.
*/
void b1PopCallback(void *ptr)
{
uint32_t number;
dbSerialPrintln("b1PopCallback");
n0.getValue(&number);
number -= 1;
n0.setValue(number);
}
void setup(void)
{
/* Set the baudrate which is for debug and communicate with Nextion screen. */
nexInit();
/* Register the pop event callback function of the current number component. */
n0.attachPop(n0PopCallback);
/* Register the pop event callback function of the current button0 component. */
b0.attachPop(b0PopCallback);
/* Register the pop event callback function of the current button1 component. */
b1.attachPop(b1PopCallback);
dbSerialPrintln("setup done");
}
void loop(void)
{
/*
* When a pop or push event occured every time,
* the corresponding component[right page id and component id] in touch event list will be asked.
*/
nexLoop(nex_listen_list);
}
NexNumber
NexNumber component.
Definition: NexNumber.h:30
nexLoop
void nexLoop(NexTouch *nex_listen_list[])
Listen touch event and calling callbacks attached before.
Definition: NexHardware.cpp:235
NexTouch::attachPop
void attachPop(NexTouchEventCb pop, void *ptr=NULL)
Attach an callback function of pop touch event.
Definition: NexTouch.cpp:39
nexInit
bool nexInit(void)
Init Nextion.
Definition: NexHardware.cpp:220
NexButton
NexButton component.
Definition: NexButton.h:35
Nextion.h
The header file including all other header files provided by this library.
NexNumber::setValue
bool setValue(uint32_t number)
Set number attribute of component.
Definition: NexNumber.cpp:31
NexNumber::getValue
bool getValue(uint32_t *number)
Get number attribute of component.
Definition: NexNumber.cpp:22
NexTouch
Father class of the components with touch events.
Definition: NexTouch.h:53