mirror of
https://github.com/itead/ITEADLIB_Arduino_Nextion.git
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96 lines
2.3 KiB
C++
Executable File
96 lines
2.3 KiB
C++
Executable File
/**
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* @example CompButton.ino
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*
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* @par How to Use
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* This example shows that when the button component on the Nextion screen is released,
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* the text of this button will plus one every time.
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*
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* @author Wu Pengfei (email:<pengfei.wu@itead.cc>)
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* @date 2015/7/10
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* @updated 2016/12/25 bring HMI up to v0.32 to avoid too old issues
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* @convert by Patrick Martin, no other changes made
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* @copyright
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* Copyright (C) 2014-2015 ITEAD Intelligent Systems Co., Ltd. \n
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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#include "Nextion.h"
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/*
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* Declare a button object [page id:0,component id:1, component name: "b0"].
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*/
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NexButton b0 = NexButton(0, 1, "b0");
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char buffer[100] = {0};
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/*
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* Register a button object to the touch event list.
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*/
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NexTouch *nex_listen_list[] =
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{
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&b0,
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NULL
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};
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/*
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* Button component pop callback function.
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* In this example,the button's text value will plus one every time when it is released.
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*/
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void b0PopCallback(void *ptr)
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{
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uint16_t len;
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uint16_t number;
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NexButton *btn = (NexButton *)ptr;
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dbSerialPrintln("b0PopCallback");
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dbSerialPrint("ptr=");
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dbSerialPrintln((uint32_t)ptr);
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memset(buffer, 0, sizeof(buffer));
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/* Get the text value of button component [the value is string type]. */
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btn->getText(buffer, sizeof(buffer));
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number = atoi(buffer);
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number += 1;
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memset(buffer, 0, sizeof(buffer));
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itoa(number, buffer, 10);
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/* Set the text value of button component [the value is string type]. */
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btn->setText(buffer);
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}
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void setup(void)
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{
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/* Set the baudrate which is for debug and communicate with Nextion screen. */
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nexInit();
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/* Register the pop event callback function of the current button component. */
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b0.attachPop(b0PopCallback, &b0);
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dbSerialPrintln("setup done");
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}
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void loop(void)
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{
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/*
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* When a pop or push event occured every time,
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* the corresponding component[right page id and component id] in touch event list will be asked.
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*/
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nexLoop(nex_listen_list);
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}
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