还是在 “lv_port_indev.c” 中, 向下滚动到大约209行,找到触摸检测函数:touchpad_is_pressed(), 这个是:触屏状态检测函数,函数返回:0-未按下、1-按下; 第213行,原 return false, 注释掉; 第212行,原来是空行,插入: tp_dev.scan(0); if (tp_dev.sta & TP_PRES_DOWN) /* 触摸屏被按下 */ { ...
EASY EAI Nano所带的SDK带有QT图形界面，QT是一个应用非常广泛的界面库。开发板上的人脸识别门禁应用就...
首先是touchpad_init(),在这里需要对输入设备做初始化,就像上文对触摸屏做初始化一样。 在touchpad_is_pressed()中,需要提供一个显示屏触摸函数,判断是否发生了触摸事件: staticbooltouchpad_is_pressed(void){if(XPT2046_TouchDetect() == TOUCH_PRESSED)returntrue;returnfalse; } 如果发生了触摸事件,那么会进入...
LV_EVENT_PRESS_LOST, /**< The object is still being pressed but slid cursor/finger off of the object */ LV_EVENT_SHORT_CLICKED, /**< The object was pressed for a short period of time, then released it. Not called if scrolled.*/ LV_EVENT_LONG_PRESSED, /**< Object has been pres...
Could you try lv_style_set_transform_height(&style_btn_pressed, 10); or lv_style_set_height(&style_btn_pressed, 10);? The button size is not changed Member kisvegabor commented Jun 21, 2023 Yes, it's because the coordinates of the buttons are set automatically. See here: https://...
向下滚动到大约209行,找到触摸检测函数:touchpad_is_pressed(), 在函数内添加你的触摸屏状态检测函数; 第212行,即函数内,添加触屏状态检测函数,函数返回必须是:0-未按下、1-按下 return XPT2046_IsPressed(); 完成后,是这个样子的: 6、添加 坐标获取函数 ...
staticvoidread_cb(lv_indev_t*indev,lv_indev_data_t*data){staticuint32_tlast_btn=0;/*Store the last pressed button*/intbtn_pr=ir_pressed();/*Get the ID (0,1,2...) of the pressed button*/if(btn_pr>=0){/*Is there a button press? (E.g. -1 indicated no button was pressed...
lvgl官方各类控件的源程序。 lvgl_port用于存放LVGL显示屏驱动、输入设备驱动及文件系统驱动。 5.3 拷贝LVGL src文件和根目录lvgl.h到lvgl文件夹 src所有源码都在项目根目录的src文件夹里。 lvgl.h包含了LVGL库中的所有头文件。 5.4 拷贝LVGL examples/porting文件到lvgl_port文件夹 ...
static void button_init(void); static bool button_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data); static int8_t button_get_pressed_id(void); static bool button_is_pressed(uint8_t id); /*** * STATIC VARIABLES ***/ lv...
The OLED display touch function is working since I touch the display, the correct display x,y can be reported. If I press the screen and lift up my finger, "LV_EVENT_CLICKED" can be generated within lvgl. But if I press the screen without lift up my finger ,"LV_EVENT_LONG_PRESSED"...