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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-05-26 Chushicheng the first version
*/
/*
* Program Listing: This is an LCD device touch usage routine
* The routine exports lcd_touch_sample commands to the control terminal
* Command invocation format: lcd_touch_sample
* Program functions: draw the trajectory of the touch on the screen and print the coordinates of the touch point on the terminal
*/
#include <rtdevice.h>
#include "drv_st7796.h"
#include "drv_gt911.h"
static void lcd_touch_sample(void)
{
static rt_uint16_t white[319*2];
rt_uint16_t green[4*4*2];
st7796_t *lcd_obj = (st7796_t *)rt_device_find("lcd");
rt_device_t dev = rt_device_find("capt");
capt_t *capt = (capt_t*)dev->user_data;
gt911_input_t ctp_input;
for (rt_uint32_t i = 0; i < 319*2; i++)
{
white[i] = 0xffff;
}
for (rt_uint32_t i = 0; i < 4*4*2; i++)
{
green[i] = 0x07;
}
for (rt_uint16_t i = 0; i < 159; i++)
{
lcd_load(i, i, 0, 319, white);
}
for (rt_uint16_t i = 159; i < 318; i++)
{
lcd_load(i, i, 0, 319, white);
}
for (rt_uint16_t i = 318; i < 479; i++)
{
lcd_load(i, i, 0, 319, white);
}
while(1)
{
gt911_ctp_read(&capt->gt911, &ctp_input);
for (rt_uint8_t i = 0; i < ctp_input.num_pos; i++)
{
/* Found track ID #0 */
if (ctp_input.pos[i].id == 0)
{
lcd_load(capt->gt911.pos_y_max - ctp_input.pos[i].pos_y, capt->gt911.pos_y_max - ctp_input.pos[i].pos_y+4, ctp_input.pos[i].pos_x, ctp_input.pos[i].pos_x+4, green);
rt_kprintf("x:%d, y:%d\r\n", capt->gt911.pos_y_max - ctp_input.pos[i].pos_y , ctp_input.pos[i].pos_x);
}
}
}
}
MSH_CMD_EXPORT(lcd_touch_sample, lcd sample);
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