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415 lines
10 KiB
C
415 lines
10 KiB
C
/**
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* @file lv_port_indev_templ.c
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*
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*/
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/*Copy this file as "lv_port_indev.c" and set this value to "1" to enable content*/
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#if 0
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/*********************
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* INCLUDES
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*********************/
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#include "lv_port_indev_template.h"
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#include "../../lvgl.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void touchpad_init(void);
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static void touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
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static bool touchpad_is_pressed(void);
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static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y);
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static void mouse_init(void);
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static void mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
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static bool mouse_is_pressed(void);
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static void mouse_get_xy(lv_coord_t * x, lv_coord_t * y);
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static void keypad_init(void);
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static void keypad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
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static uint32_t keypad_get_key(void);
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static void encoder_init(void);
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static void encoder_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
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static void encoder_handler(void);
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static void button_init(void);
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static void button_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
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static int8_t button_get_pressed_id(void);
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static bool button_is_pressed(uint8_t id);
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/**********************
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* STATIC VARIABLES
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**********************/
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lv_indev_t * indev_touchpad;
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lv_indev_t * indev_mouse;
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lv_indev_t * indev_keypad;
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lv_indev_t * indev_encoder;
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lv_indev_t * indev_button;
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static int32_t encoder_diff;
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static lv_indev_state_t encoder_state;
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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void lv_port_indev_init(void)
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{
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/**
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* Here you will find example implementation of input devices supported by LittelvGL:
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* - Touchpad
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* - Mouse (with cursor support)
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* - Keypad (supports GUI usage only with key)
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* - Encoder (supports GUI usage only with: left, right, push)
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* - Button (external buttons to press points on the screen)
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*
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* The `..._read()` function are only examples.
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* You should shape them according to your hardware
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*/
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static lv_indev_drv_t indev_drv;
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/*------------------
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* Touchpad
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* -----------------*/
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/*Initialize your touchpad if you have*/
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touchpad_init();
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/*Register a touchpad input device*/
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.read_cb = touchpad_read;
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indev_touchpad = lv_indev_drv_register(&indev_drv);
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/*------------------
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* Mouse
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* -----------------*/
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/*Initialize your mouse if you have*/
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mouse_init();
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/*Register a mouse input device*/
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.read_cb = mouse_read;
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indev_mouse = lv_indev_drv_register(&indev_drv);
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/*Set cursor. For simplicity set a HOME symbol now.*/
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lv_obj_t * mouse_cursor = lv_img_create(lv_scr_act());
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lv_img_set_src(mouse_cursor, LV_SYMBOL_HOME);
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lv_indev_set_cursor(indev_mouse, mouse_cursor);
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/*------------------
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* Keypad
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* -----------------*/
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/*Initialize your keypad or keyboard if you have*/
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keypad_init();
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/*Register a keypad input device*/
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_KEYPAD;
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indev_drv.read_cb = keypad_read;
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indev_keypad = lv_indev_drv_register(&indev_drv);
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/*Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
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*add objects to the group with `lv_group_add_obj(group, obj)`
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*and assign this input device to group to navigate in it:
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*`lv_indev_set_group(indev_keypad, group);`*/
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/*------------------
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* Encoder
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* -----------------*/
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/*Initialize your encoder if you have*/
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encoder_init();
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/*Register a encoder input device*/
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_ENCODER;
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indev_drv.read_cb = encoder_read;
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indev_encoder = lv_indev_drv_register(&indev_drv);
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/*Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
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*add objects to the group with `lv_group_add_obj(group, obj)`
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*and assign this input device to group to navigate in it:
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*`lv_indev_set_group(indev_encoder, group);`*/
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/*------------------
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* Button
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* -----------------*/
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/*Initialize your button if you have*/
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button_init();
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/*Register a button input device*/
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_BUTTON;
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indev_drv.read_cb = button_read;
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indev_button = lv_indev_drv_register(&indev_drv);
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/*Assign buttons to points on the screen*/
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static const lv_point_t btn_points[2] = {
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{10, 10}, /*Button 0 -> x:10; y:10*/
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{40, 100}, /*Button 1 -> x:40; y:100*/
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};
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lv_indev_set_button_points(indev_button, btn_points);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/*------------------
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* Touchpad
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* -----------------*/
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/*Initialize your touchpad*/
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static void touchpad_init(void)
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{
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/*Your code comes here*/
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}
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/*Will be called by the library to read the touchpad*/
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static void touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
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{
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static lv_coord_t last_x = 0;
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static lv_coord_t last_y = 0;
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/*Save the pressed coordinates and the state*/
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if(touchpad_is_pressed()) {
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touchpad_get_xy(&last_x, &last_y);
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data->state = LV_INDEV_STATE_PR;
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}
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else {
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data->state = LV_INDEV_STATE_REL;
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}
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/*Set the last pressed coordinates*/
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data->point.x = last_x;
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data->point.y = last_y;
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}
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/*Return true is the touchpad is pressed*/
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static bool touchpad_is_pressed(void)
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{
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/*Your code comes here*/
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return false;
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}
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/*Get the x and y coordinates if the touchpad is pressed*/
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static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y)
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{
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/*Your code comes here*/
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(*x) = 0;
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(*y) = 0;
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}
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/*------------------
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* Mouse
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* -----------------*/
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/*Initialize your mouse*/
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static void mouse_init(void)
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{
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/*Your code comes here*/
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}
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/*Will be called by the library to read the mouse*/
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static void mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
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{
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/*Get the current x and y coordinates*/
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mouse_get_xy(&data->point.x, &data->point.y);
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/*Get whether the mouse button is pressed or released*/
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if(mouse_is_pressed()) {
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data->state = LV_INDEV_STATE_PR;
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}
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else {
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data->state = LV_INDEV_STATE_REL;
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}
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}
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/*Return true is the mouse button is pressed*/
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static bool mouse_is_pressed(void)
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{
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/*Your code comes here*/
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return false;
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}
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/*Get the x and y coordinates if the mouse is pressed*/
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static void mouse_get_xy(lv_coord_t * x, lv_coord_t * y)
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{
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/*Your code comes here*/
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(*x) = 0;
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(*y) = 0;
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}
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/*------------------
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* Keypad
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* -----------------*/
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/*Initialize your keypad*/
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static void keypad_init(void)
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{
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/*Your code comes here*/
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}
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/*Will be called by the library to read the mouse*/
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static void keypad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
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{
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static uint32_t last_key = 0;
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/*Get the current x and y coordinates*/
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mouse_get_xy(&data->point.x, &data->point.y);
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/*Get whether the a key is pressed and save the pressed key*/
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uint32_t act_key = keypad_get_key();
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if(act_key != 0) {
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data->state = LV_INDEV_STATE_PR;
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/*Translate the keys to LVGL control characters according to your key definitions*/
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switch(act_key) {
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case 1:
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act_key = LV_KEY_NEXT;
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break;
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case 2:
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act_key = LV_KEY_PREV;
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break;
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case 3:
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act_key = LV_KEY_LEFT;
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break;
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case 4:
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act_key = LV_KEY_RIGHT;
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break;
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case 5:
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act_key = LV_KEY_ENTER;
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break;
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}
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last_key = act_key;
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}
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else {
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data->state = LV_INDEV_STATE_REL;
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}
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data->key = last_key;
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}
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/*Get the currently being pressed key. 0 if no key is pressed*/
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static uint32_t keypad_get_key(void)
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{
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/*Your code comes here*/
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return 0;
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}
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/*------------------
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* Encoder
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* -----------------*/
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/*Initialize your keypad*/
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static void encoder_init(void)
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{
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/*Your code comes here*/
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}
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/*Will be called by the library to read the encoder*/
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static void encoder_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
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{
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data->enc_diff = encoder_diff;
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data->state = encoder_state;
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}
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/*Call this function in an interrupt to process encoder events (turn, press)*/
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static void encoder_handler(void)
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{
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/*Your code comes here*/
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encoder_diff += 0;
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encoder_state = LV_INDEV_STATE_REL;
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}
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/*------------------
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* Button
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* -----------------*/
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/*Initialize your buttons*/
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static void button_init(void)
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{
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/*Your code comes here*/
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}
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/*Will be called by the library to read the button*/
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static void button_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
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{
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static uint8_t last_btn = 0;
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/*Get the pressed button's ID*/
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int8_t btn_act = button_get_pressed_id();
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if(btn_act >= 0) {
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data->state = LV_INDEV_STATE_PR;
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last_btn = btn_act;
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}
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else {
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data->state = LV_INDEV_STATE_REL;
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}
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/*Save the last pressed button's ID*/
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data->btn_id = last_btn;
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}
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/*Get ID (0, 1, 2 ..) of the pressed button*/
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static int8_t button_get_pressed_id(void)
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{
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uint8_t i;
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/*Check to buttons see which is being pressed (assume there are 2 buttons)*/
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for(i = 0; i < 2; i++) {
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/*Return the pressed button's ID*/
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if(button_is_pressed(i)) {
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return i;
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}
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}
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/*No button pressed*/
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return -1;
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}
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/*Test if `id` button is pressed or not*/
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static bool button_is_pressed(uint8_t id)
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{
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/*Your code comes here*/
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return false;
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}
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#else /*Enable this file at the top*/
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/*This dummy typedef exists purely to silence -Wpedantic.*/
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typedef int keep_pedantic_happy;
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#endif
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