1 /*
2 * Copyright (c) 2006-2022, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2022-02-25 Wayne the first version
9 */
10
11 #include <rtthread.h>
12 #include <rtdevice.h>
13
14 #define THREAD_PRIORITY 5
15 #define THREAD_STACK_SIZE 2048
16 #define THREAD_TIMESLICE 5
17
18 static rt_sem_t tpc_sem = RT_NULL;
19
nu_touch_inputevent_cb(rt_int16_t x,rt_int16_t y,rt_uint8_t state)20 rt_weak void nu_touch_inputevent_cb(rt_int16_t x, rt_int16_t y, rt_uint8_t state)
21 {
22 rt_kprintf("[%d] %d %d\n", state, x, y);
23 }
24
rx_callback(rt_device_t dev,rt_size_t size)25 static rt_err_t rx_callback(rt_device_t dev, rt_size_t size)
26 {
27 return rt_sem_release(tpc_sem);
28 }
29
tpc_entry(void * parameter)30 static void tpc_entry(void *parameter)
31 {
32 struct rt_touch_data *read_data;
33 struct rt_touch_info info;
34 rt_device_t dev = RT_NULL;
35
36 const char *name = (const char *)parameter;
37 rt_uint32_t x_range = BSP_LCD_WIDTH;
38 rt_uint32_t y_range = BSP_LCD_HEIGHT;
39
40 dev = rt_device_find(name);
41 if (dev == RT_NULL)
42 {
43 rt_kprintf("can't find device:%s\n", name);
44 return;
45 }
46
47 if (rt_device_open(dev, RT_DEVICE_FLAG_INT_RX) != RT_EOK)
48 {
49 rt_kprintf("open device failed!");
50 return;
51 }
52 rt_kprintf("[%s] x: %d, y: %d\n", __func__, x_range, y_range);
53
54 rt_device_control(dev, RT_TOUCH_CTRL_SET_X_RANGE, &x_range); /* if possible you can set your x y coordinate*/
55 rt_device_control(dev, RT_TOUCH_CTRL_SET_Y_RANGE, &y_range);
56
57 tpc_sem = rt_sem_create("dsem", 0, RT_IPC_FLAG_FIFO);
58 if (tpc_sem == RT_NULL)
59 {
60 rt_kprintf("create dynamic semaphore failed.\n");
61 return;
62 }
63
64 rt_device_set_rx_indicate(dev, rx_callback);
65
66 rt_device_control(dev, RT_TOUCH_CTRL_GET_INFO, &info);
67 rt_kprintf("range_x = %d \n", info.range_x);
68 rt_kprintf("range_y = %d \n", info.range_y);
69 rt_kprintf("point_num = %d \n", info.point_num);
70
71 read_data = (struct rt_touch_data *)rt_malloc(sizeof(struct rt_touch_data) * info.point_num);
72 RT_ASSERT(read_data);
73
74 rt_memset(read_data, 0, sizeof(struct rt_touch_data) * info.point_num);
75
76 while (1)
77 {
78 rt_sem_take(tpc_sem, RT_WAITING_FOREVER);
79 rt_device_control(dev, RT_TOUCH_CTRL_DISABLE_INT, RT_NULL);
80
81 if (rt_device_read(dev, 0, read_data, info.point_num) == info.point_num)
82 {
83 for (rt_uint8_t i = 0; i < 1; i++) // Only report one point.
84 {
85 if (read_data[i].event == RT_TOUCH_EVENT_DOWN
86 || read_data[i].event == RT_TOUCH_EVENT_UP
87 || read_data[i].event == RT_TOUCH_EVENT_MOVE)
88 {
89 rt_uint16_t u16X, u16Y;
90
91 u16X = read_data[i].x_coordinate;
92 u16Y = read_data[i].y_coordinate;
93
94 #if defined(NU_PKG_TPC_REVERSE_XY)
95 u16X = info.range_x - u16X;
96 u16Y = info.range_y - u16Y;
97 #endif
98
99 //rt_kprintf("[%d] %d %d\n", read_data[i].event, u16X, u16Y);
100
101 nu_touch_inputevent_cb(u16X, u16Y, read_data[i].event);
102 }
103 }
104 }
105 rt_device_control(dev, RT_TOUCH_CTRL_ENABLE_INT, RT_NULL);
106 }
107 }
108
109
110 /* Test function */
tpc_sample(const char * tpc_name)111 int tpc_sample(const char *tpc_name)
112 {
113 rt_thread_t tpc_thread;
114 tpc_thread = rt_thread_create("tpc",
115 tpc_entry,
116 (void *)tpc_name,
117 THREAD_STACK_SIZE,
118 THREAD_PRIORITY,
119 THREAD_TIMESLICE);
120
121 if (tpc_thread != RT_NULL)
122 rt_thread_startup(tpc_thread);
123
124 return 0;
125 }
126