Diff: lv_port_indev.c

Revision:

0:cffa136e7f8f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lv_port_indev.c	Tue Sep 08 05:23:58 2020 +0000
@@ -0,0 +1,481 @@
+/**
+ * @file lv_port_indev_templ.c
+ *
+ */
+
+ /*Copy this file as "lv_port_indev.c" and set this value to "1" to enable content*/
+#if 1
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_port_indev.h"
+#include "../lv_core/lv_indev.h"
+#include "stm32746g_discovery.h"
+#include "stm32746g_discovery_lcd.h"
+#include "stm32746g_discovery_ts.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define TOUCHPAD    1
+#define KEYBOARD    0
+#define MOUSE       0
+#define ENCODER     0
+#define BUTTON      0
+ 
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+TS_StateTypeDef TS_State; 
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/ 
+#if TOUCHPAD ==1
+static void touchpad_init(void);
+static bool touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
+static bool touchpad_is_pressed(void);
+static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y);
+#endif
+#if MOUSE == 1 
+static void mouse_init(void);
+static bool mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
+static bool mouse_is_pressed(void);
+static void mouse_get_xy(lv_coord_t * x, lv_coord_t * y);
+#endif
+#if KEYBOARD == 1 
+static void keypad_init(void);
+static bool keypad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
+static uint32_t keypad_get_key(void);
+#endif
+#if ENCODER == 1 
+static void encoder_init(void);
+static bool encoder_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data);
+static void encoder_handler(void);
+#endif
+#if BUTTON == 1
+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);
+#endif
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+#if TOUCHPAD == 1
+lv_indev_t * indev_touchpad;
+#endif
+#if MOUSE == 1 
+lv_indev_t * indev_mouse;
+#endif
+#if KEYBOARD == 1 
+lv_indev_t * indev_keypad;
+#endif
+#if ENCODER == 1 
+lv_indev_t * indev_encoder;
+#endif
+#if BUTTON == 1
+lv_indev_t * indev_button;
+#endif
+
+#if ENCODER == 1 
+static int32_t encoder_diff;
+static lv_indev_state_t encoder_state;
+#endif
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+void lv_port_indev_init(void)
+{
+    /* Here you will find example implementation of input devices supported by LittelvGL:
+     *  - Touchpad
+     *  - Mouse (with cursor support)
+     *  - Keypad (supports GUI usage only with key)
+     *  - Encoder (supports GUI usage only with: left, right, push)
+     *  - Button (external buttons to press points on the screen)
+     *
+     *  The `..._read()` function are only examples.
+     *  You should shape them according to your hardware
+     */
+
+    lv_indev_drv_t indev_drv;
+#if TOUCHPAD ==1
+    /*------------------
+     * Touchpad
+     * -----------------*/
+
+    /*Initialize your touchpad if you have*/
+    touchpad_init();
+
+    /*Register a touchpad input device*/
+    lv_indev_drv_init(&indev_drv);
+    indev_drv.type = LV_INDEV_TYPE_POINTER;
+    indev_drv.read_cb = touchpad_read;
+    indev_touchpad = lv_indev_drv_register(&indev_drv);
+
+#endif
+#if MOUSE == 1 
+
+    /*------------------
+     * Mouse
+     * -----------------*/
+
+    /*Initialize your touchpad if you have*/
+    mouse_init();
+
+    /*Register a mouse input device*/
+    lv_indev_drv_init(&indev_drv);
+    indev_drv.type = LV_INDEV_TYPE_POINTER;
+    indev_drv.read_cb = mouse_read;
+    indev_mouse = lv_indev_drv_register(&indev_drv);
+
+    /*Set cursor. For simplicity set a HOME symbol now.*/
+    lv_obj_t * mouse_cursor = lv_img_create(lv_disp_get_scr_act(NULL), NULL);
+    lv_img_set_src(mouse_cursor, LV_SYMBOL_HOME);
+    lv_indev_set_cursor(indev_mouse, mouse_cursor);
+
+#endif
+#if KEYBOARD == 1 
+
+    /*------------------
+     * Keypad
+     * -----------------*/
+
+    /*Initialize your keypad or keyboard if you have*/
+    keypad_init();
+
+    /*Register a keypad input device*/
+    lv_indev_drv_init(&indev_drv);
+    indev_drv.type = LV_INDEV_TYPE_KEYPAD;
+    indev_drv.read_cb = keypad_read;
+    indev_keypad = lv_indev_drv_register(&indev_drv);
+
+    /* Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
+     * add objects to the group with `lv_group_add_obj(group, obj)`
+     * and assign this input device to group to navigate in it:
+     * `lv_indev_set_group(indev_keypad, group);` */
+
+#endif
+#if ENCODER == 1 
+
+    /*------------------
+     * Encoder
+     * -----------------*/
+
+    /*Initialize your encoder if you have*/
+    encoder_init();
+
+    /*Register a encoder input device*/
+    lv_indev_drv_init(&indev_drv);
+    indev_drv.type = LV_INDEV_TYPE_KEYPAD;
+    indev_drv.read_cb = encoder_read;
+    indev_encoder = lv_indev_drv_register(&indev_drv);
+
+    /* Later you should create group(s) with `lv_group_t * group = lv_group_create()`,
+     * add objects to the group with `lv_group_add_obj(group, obj)`
+     * and assign this input device to group to navigate in it:
+     * `lv_indev_set_group(indev_keypad, group);` */
+
+#endif
+#if BUTTON == 1
+
+    /*------------------
+     * Button
+     * -----------------*/
+
+    /*Initialize your button if you have*/
+    button_init();
+
+    /*Register a button input device*/
+    lv_indev_drv_init(&indev_drv);
+    indev_drv.type = LV_INDEV_TYPE_BUTTON;
+    indev_drv.read_cb = button_read;
+    indev_button = lv_indev_drv_register(&indev_drv);
+
+    /*Assign buttons to points on the screen*/
+    static const lv_point_t btn_points[2] = {
+            {10, 10},   /*Button 0 -> x:10; y:10*/
+            {40, 100},  /*Button 1 -> x:40; y:100*/
+    };
+    lv_indev_set_button_points(indev_button, btn_points);
+
+#endif
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+
+#if TOUCHPAD ==1
+/*------------------
+ * Touchpad
+ * -----------------*/
+
+/*Initialize your touchpad*/
+static void touchpad_init(void)
+{
+    /*Your code comes here*/
+    BSP_TS_Init(BSP_LCD_GetXSize(),BSP_LCD_GetYSize());
+}
+
+/* Will be called by the library to read the touchpad */
+static bool touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
+{
+    static lv_coord_t last_x = 0;
+    static lv_coord_t last_y = 0;
+    
+    /*Save the pressed coordinates and the state*/
+        BSP_TS_GetState(&TS_State);
+    if(touchpad_is_pressed()) {
+        touchpad_get_xy(&last_x, &last_y);
+        data->state = LV_INDEV_STATE_PR;
+    } else {
+        data->state = LV_INDEV_STATE_REL;
+    }
+
+    /*Set the last pressed coordinates*/
+    data->point.x = last_x;
+    data->point.y = last_y;
+
+    /*Return `false` because we are not buffering and no more data to read*/
+    return false;
+}
+
+/*Return true is the touchpad is pressed*/
+static bool touchpad_is_pressed(void)
+{
+    /*Your code comes here*/
+    return TS_State.touchDetected;
+}
+
+/*Get the x and y coordinates if the touchpad is pressed*/
+static void touchpad_get_xy(lv_coord_t * x, lv_coord_t * y)
+{
+    /*Your code comes here*/
+    (*x) = TS_State.touchX[0];
+    (*y) = TS_State.touchY[0];
+}
+
+#endif
+#if MOUSE == 1 
+
+/*------------------
+ * Mouse
+ * -----------------*/
+
+/* Initialize your mouse */
+static void mouse_init(void)
+{
+    /*Your code comes here*/
+}
+
+/* Will be called by the library to read the mouse */
+static bool mouse_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
+{
+    /*Get the current x and y coordinates*/
+    mouse_get_xy(&data->point.x, &data->point.y);
+
+    /*Get whether the mouse button is pressed or released*/
+    if(mouse_is_pressed()) {
+        data->state = LV_INDEV_STATE_PR;
+    } else {
+        data->state = LV_INDEV_STATE_REL;
+    }
+
+    /*Return `false` because we are not buffering and no more data to read*/
+    return false;
+}
+
+/*Return true is the mouse button is pressed*/
+static bool mouse_is_pressed(void)
+{
+    /*Your code comes here*/
+
+    return false;
+}
+
+/*Get the x and y coordinates if the mouse is pressed*/
+static void mouse_get_xy(lv_coord_t * x, lv_coord_t * y)
+{
+    /*Your code comes here*/
+
+    (*x) = 0;
+    (*y) = 0;
+}
+
+#endif
+#if KEYBOARD == 1 
+
+/*------------------
+ * Keypad
+ * -----------------*/
+
+/* Initialize your keypad */
+static void keypad_init(void)
+{
+    /*Your code comes here*/
+}
+
+/* Will be called by the library to read the mouse */
+static bool keypad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
+{
+    static uint32_t last_key = 0;
+
+    /*Get the current x and y coordinates*/
+    mouse_get_xy(&data->point.x, &data->point.y);
+
+    /*Get whether the a key is pressed and save the pressed key*/
+    uint32_t act_key = keypad_get_key();
+    if(act_key != 0) {
+        data->state = LV_INDEV_STATE_PR;
+
+        /*Translate the keys to LittlevGL control characters according to your key definitions*/
+        switch(act_key) {
+        case 1:
+            act_key = LV_KEY_NEXT;
+            break;
+        case 2:
+            act_key = LV_KEY_PREV;
+            break;
+        case 3:
+            act_key = LV_KEY_LEFT;
+            break;
+        case 4:
+            act_key = LV_KEY_RIGHT;
+            break;
+        case 5:
+            act_key = LV_KEY_ENTER;
+            break;
+        }
+
+        last_key = act_key;
+    } else {
+        data->state = LV_INDEV_STATE_REL;
+    }
+
+    data->key = last_key;
+
+    /*Return `false` because we are not buffering and no more data to read*/
+    return false;
+}
+
+/*Get the currently being pressed key.  0 if no key is pressed*/
+static uint32_t keypad_get_key(void)
+{
+    /*Your code comes here*/
+
+    return 0;
+}
+
+#endif
+#if ENCODER == 1 
+
+/*------------------
+ * Encoder
+ * -----------------*/
+
+/* Initialize your keypad */
+static void encoder_init(void)
+{
+    /*Your code comes here*/
+}
+
+/* Will be called by the library to read the encoder */
+static bool encoder_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
+{
+
+    data->enc_diff = encoder_diff;
+    data->state = encoder_state;
+
+    /*Return `false` because we are not buffering and no more data to read*/
+    return false;
+}
+
+/*Call this function in an interrupt to process encoder events (turn, press)*/
+static void encoder_handler(void)
+{
+    /*Your code comes here*/
+
+    encoder_diff += 0;
+    encoder_state = LV_INDEV_STATE_REL;
+}
+
+#endif
+#if BUTTON == 1
+
+/*------------------
+ * Button
+ * -----------------*/
+
+/* Initialize your buttons */
+static void button_init(void)
+{
+    /*Your code comes here*/
+}
+
+/* Will be called by the library to read the button */
+static bool button_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
+{
+
+    static uint8_t last_btn = 0;
+
+    /*Get the pressed button's ID*/
+    int8_t btn_act = button_get_pressed_id();
+
+    if(btn_act >= 0) {
+        data->state = LV_INDEV_STATE_PR;
+        last_btn = btn_act;
+    } else {
+        data->state = LV_INDEV_STATE_REL;
+    }
+
+    /*Save the last pressed button's ID*/
+    data->btn_id = last_btn;
+
+    /*Return `false` because we are not buffering and no more data to read*/
+    return false;
+}
+
+/*Get ID  (0, 1, 2 ..) of the pressed button*/
+static int8_t button_get_pressed_id(void)
+{
+    uint8_t i;
+
+    /*Check to buttons see which is being pressed (assume there are 2 buttons)*/
+    for(i = 0; i < 2; i++) {
+        /*Return the pressed button's ID*/
+        if(button_is_pressed(i)) {
+            return i;
+        }
+    }
+
+    /*No button pressed*/
+    return -1;
+}
+
+/*Test if `id` button is pressed or not*/
+static bool button_is_pressed(uint8_t id)
+{
+
+    /*Your code comes here*/
+
+    return false;
+}
+#endif
+
+
+#else /* Enable this file at the top */
+
+/* This dummy typedef exists purely to silence -Wpedantic. */
+typedef int keep_pedantic_happy;
+#endif
+
+