HoloCubic/2.Firmware/HoloCubic_fw/lv_port_indev.c

99 lines
2.2 KiB
C

/**
* @file lv_port_indev_templ.c
*
*/
/*Copy this file as "lv_port_indev.c" and set this value to "1" to enable content*/
/*********************
* INCLUDES
*********************/
#include "lv_port_indev.h"
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);
lv_indev_t* indev_encoder;
int32_t encoder_diff;
lv_indev_state_t encoder_state;
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;
/*------------------
* 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_ENCODER;
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_encoder, group);` */
}
/**********************
* STATIC FUNCTIONS
**********************/
/*------------------
* 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;
encoder_diff = 0;
/*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;
}