116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-02-01 Rudy Lo The first version
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*/
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#include <lvgl.h>
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#include <stdbool.h>
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#include <rtdevice.h>
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#include <drv_gpio.h>
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#include "ft6236.h"
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#define TOUCH_DEVICE_NAME "touch_ft" /* Touch device name */
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#define TOUCH_DEVICE_I2C_BUS "i2c2" /* SCL -> PH15(127), SDA -> PH13(125) */
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#define REST_PIN GET_PIN(A, 3) /* reset pin */
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#define USER_BUTTON_PIN GET_PIN(H, 4) /* Reserve for LV_INDEV_TYPE_BUTTON */
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static rt_device_t ts; /* Touch device handle, Touchscreen */
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static struct rt_touch_data *read_data;
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static rt_int16_t last_x = 0;
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static rt_int16_t last_y = 0;
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static bool touchpad_is_pressed(void)
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{
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if (RT_EOK == rt_device_read(ts, 0, read_data, 1)) /* return RT_EOK is a bug (ft6236) */
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{
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if (read_data->event == RT_TOUCH_EVENT_DOWN) {
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/* swap x and y */
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rt_int16_t tmp_x = read_data->y_coordinate;
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rt_int16_t tmp_y = read_data->x_coordinate;
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/* invert y */
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tmp_y = 320 - tmp_y;
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/* restore data */
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last_x = tmp_x;
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last_y = tmp_y;
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rt_kprintf("touch: x = %d, y = %d\n", last_x, last_y);
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return true;
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}
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}
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return false;
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}
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static void touchpad_get_xy(rt_int16_t *x, rt_int16_t *y)
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{
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*x = last_x;
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*y = last_y;
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}
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static void touchpad_read(lv_indev_drv_t *indev, lv_indev_data_t *data)
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{
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/*`touchpad_is_pressed` and `touchpad_get_xy` needs to be implemented by you*/
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if(touchpad_is_pressed()) {
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data->state = LV_INDEV_STATE_PRESSED;
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touchpad_get_xy(&data->point.x, &data->point.y);
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} else {
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data->state = LV_INDEV_STATE_RELEASED;
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}
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}
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rt_err_t rt_hw_ft6236_register(void)
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{
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struct rt_touch_config config;
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config.dev_name = TOUCH_DEVICE_I2C_BUS;
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rt_hw_ft6236_init(TOUCH_DEVICE_NAME, &config, REST_PIN);
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ts = rt_device_find(TOUCH_DEVICE_NAME);
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if (!ts) {
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return -RT_ERROR;
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}
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read_data = (struct rt_touch_data *)rt_calloc(1, sizeof(struct rt_touch_data));
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if (!read_data) {
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return -RT_ENOMEM;
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}
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if (!rt_device_open(ts, RT_DEVICE_FLAG_RDONLY)) {
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struct rt_touch_info info;
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rt_device_control(ts, RT_TOUCH_CTRL_GET_INFO, &info);
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rt_kprintf("type :%d\n", info.type);
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rt_kprintf("vendor :%s\n", info.vendor);
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rt_kprintf("point_num :%d\n", info.point_num);
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rt_kprintf("range_x :%d\n", info.range_x);
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rt_kprintf("range_y :%d\n", info.range_y);
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return RT_EOK;
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} else {
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rt_kprintf("open touch device failed.\n");
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return -RT_ERROR;
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}
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}
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lv_indev_t * touch_indev;
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void lv_port_indev_init(void)
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{
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static lv_indev_drv_t indev_drv; /* Descriptor of a input device driver */
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lv_indev_drv_init(&indev_drv); /* Basic initialization */
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indev_drv.type = LV_INDEV_TYPE_POINTER; /* Touch pad is a pointer-like device */
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indev_drv.read_cb = touchpad_read; /* Set your driver function */
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/* Register the driver in LVGL and save the created input device object */
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touch_indev = lv_indev_drv_register(&indev_drv);
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/* Register touch device */
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rt_hw_ft6236_register();
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}
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