rt-thread-official/bsp/renesas/ra8m1-ek/board/lvgl/lv_port_indev.c

/*
 * Copyright (c) 2006-2023, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2023-03-09     Rbb666       The first version
 */
#include <lvgl.h>
#include <rtdevice.h>

#include "gt911.h"

#define DBG_TAG "lv_port_indev"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>

#include "hal_data.h"

#define GT911_IRQ_PIN   BSP_IO_PORT_00_PIN_04
#define GT911_RST_PIN   BSP_IO_PORT_08_PIN_01

static rt_device_t touch_dev;
static lv_indev_t *touch_indev;
struct rt_touch_data *read_data;

volatile static rt_uint8_t touch_detect_flag = 0;

static void touchpad_read(lv_indev_drv_t *indev, lv_indev_data_t *data)
{
    if (touch_detect_flag != 1)
        return;

    rt_device_read(touch_dev, 0, read_data, 1);

    if (read_data->event == RT_TOUCH_EVENT_NONE)
        return;

    data->point.x = read_data->x_coordinate;
    data->point.y = read_data->y_coordinate;

    if (read_data->event == RT_TOUCH_EVENT_DOWN)
        data->state = LV_INDEV_STATE_PR;
    if (read_data->event == RT_TOUCH_EVENT_MOVE)
        data->state = LV_INDEV_STATE_PR;
    if (read_data->event == RT_TOUCH_EVENT_UP)
        data->state = LV_INDEV_STATE_REL;

    touch_detect_flag = 0;
    rt_device_control(touch_dev, RT_TOUCH_CTRL_ENABLE_INT, RT_NULL);
}

static rt_err_t rx_callback(rt_device_t dev, rt_size_t size)
{
    touch_detect_flag = 1;
    rt_device_control(dev, RT_TOUCH_CTRL_DISABLE_INT, RT_NULL);
    return 0;
}

rt_err_t gt911_probe(rt_uint16_t x, rt_uint16_t y)
{
    void *id;

    touch_dev = rt_device_find("gt911");
    if (touch_dev == RT_NULL)
    {
        rt_kprintf("can't find device gt911\n");
        return -1;
    }

    if (rt_device_open(touch_dev, RT_DEVICE_FLAG_INT_RX) != RT_EOK)
    {
        rt_kprintf("open device failed!");
        return -1;
    }

    id = rt_malloc(sizeof(rt_uint8_t) * 8);
    rt_device_control(touch_dev, RT_TOUCH_CTRL_GET_ID, id);
    rt_uint8_t *read_id = (rt_uint8_t *)id;
    rt_kprintf("id = GT%d%d%d \n", read_id[0] - '0', read_id[1] - '0', read_id[2] - '0');

    rt_device_control(touch_dev, RT_TOUCH_CTRL_SET_X_RANGE, &x);  /* if possible you can set your x y coordinate*/
    rt_device_control(touch_dev, RT_TOUCH_CTRL_SET_Y_RANGE, &y);
    rt_device_control(touch_dev, RT_TOUCH_CTRL_GET_INFO, id);
    rt_kprintf("range_x = %d \n", (*(struct rt_touch_info *)id).range_x);
    rt_kprintf("range_y = %d \n", (*(struct rt_touch_info *)id).range_y);
    rt_kprintf("point_num = %d \n", (*(struct rt_touch_info *)id).point_num);
    rt_free(id);

    rt_device_set_rx_indicate(touch_dev, rx_callback);

    read_data = (struct rt_touch_data *)rt_calloc(1, sizeof(struct rt_touch_data));
    if (!read_data)
    {
        return -RT_ENOMEM;
    }

    return RT_EOK;
}

#define RST_PIN   "p801"
#define INT_PIN   "p004"

rt_err_t rt_hw_gt911_register(void)
{
    struct rt_touch_config cfg;
    rt_base_t int_pin = rt_pin_get(INT_PIN);
    rt_base_t rst_pin = rt_pin_get(RST_PIN);

    cfg.dev_name = "i2c1";
    cfg.irq_pin.pin = int_pin;
    cfg.irq_pin.mode = PIN_MODE_INPUT_PULLDOWN;
    cfg.user_data = &rst_pin;

    rt_hw_gt911_init("gt911", &cfg);

    gt911_probe(480, 272);

    return RT_EOK;
}

void lv_port_indev_init(void)
{
    static lv_indev_drv_t indev_drv;         /* Descriptor of a input device driver */
    lv_indev_drv_init(&indev_drv);           /* Basic initialization */
    indev_drv.type = LV_INDEV_TYPE_POINTER;  /* Touch pad is a pointer-like device */
    indev_drv.read_cb = touchpad_read;       /* Set your driver function */

    /* Register the driver in LVGL and save the created input device object */
    touch_indev = lv_indev_drv_register(&indev_drv);

    /* Register touch device */
    rt_err_t res = rt_hw_gt911_register();
    RT_ASSERT(res == RT_EOK);
}