106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2006-2021, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2021-10-18 Meco Man The first version
|
|
*/
|
|
#include <lvgl.h>
|
|
#include <stdbool.h>
|
|
#include <rtdevice.h>
|
|
|
|
#define UP_KEY 2
|
|
#define DOWN_KEY 18
|
|
#define LEFT_KEY 16
|
|
#define RIGHT_KEY 20
|
|
#define CRTL_KEY 3
|
|
|
|
#define BUTTON0_PIN 2
|
|
#define BUTTON1_PIN 18
|
|
#define BUTTON2_PIN 16
|
|
#define BUTTON_WKUP_PIN 20
|
|
|
|
/*Test if `id` button is pressed or not*/
|
|
static bool button_is_pressed(uint8_t id)
|
|
{
|
|
switch(id)
|
|
{
|
|
case 0:
|
|
if(rt_pin_read(BUTTON0_PIN) == PIN_LOW)
|
|
return true;
|
|
break;
|
|
case 1:
|
|
if(rt_pin_read(BUTTON1_PIN) == PIN_LOW)
|
|
return true;
|
|
break;
|
|
case 2:
|
|
if(rt_pin_read(BUTTON2_PIN) == PIN_LOW)
|
|
return true;
|
|
break;
|
|
case 3:
|
|
if(rt_pin_read(BUTTON_WKUP_PIN) == PIN_LOW)
|
|
return true;
|
|
break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static int8_t button_get_pressed_id(void)
|
|
{
|
|
uint8_t i;
|
|
|
|
/*Check to buttons see which is being pressed*/
|
|
for(i = 0; i < 4; i++)
|
|
{
|
|
/*Return the pressed button's ID*/
|
|
if(button_is_pressed(i))
|
|
{
|
|
return i;
|
|
}
|
|
}
|
|
|
|
/*No button pressed*/
|
|
return -1;
|
|
}
|
|
|
|
void button_read(lv_indev_drv_t * drv, lv_indev_data_t*data)
|
|
{
|
|
static uint32_t last_btn = 0; /*Store the last pressed button*/
|
|
int btn_pr = button_get_pressed_id(); /*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)*/
|
|
last_btn = btn_pr; /*Save the ID of the pressed button*/
|
|
data->state = LV_INDEV_STATE_PRESSED; /*Set the pressed state*/
|
|
}
|
|
else
|
|
{
|
|
data->state = LV_INDEV_STATE_RELEASED; /*Set the released state*/
|
|
}
|
|
|
|
data->btn_id = last_btn; /*Save the last button*/
|
|
}
|
|
|
|
|
|
lv_indev_t * button_indev;
|
|
|
|
void lv_port_indev_init(void)
|
|
{
|
|
static lv_indev_drv_t indev_drv;
|
|
|
|
/* Initialize the on-board buttons */
|
|
rt_pin_mode(BUTTON0_PIN, PIN_MODE_INPUT);
|
|
rt_pin_mode(BUTTON1_PIN, PIN_MODE_INPUT);
|
|
rt_pin_mode(BUTTON2_PIN, PIN_MODE_INPUT);
|
|
rt_pin_mode(BUTTON_WKUP_PIN, PIN_MODE_INPUT);
|
|
|
|
lv_indev_drv_init(&indev_drv); /*Basic initialization*/
|
|
indev_drv.type = LV_INDEV_TYPE_BUTTON;
|
|
indev_drv.read_cb = button_read;
|
|
|
|
/*Register the driver in LVGL and save the created input device object*/
|
|
button_indev = lv_indev_drv_register(&indev_drv);
|
|
}
|