1 /*
2 * Copyright (c) 2021 Hubert Miś <hubert.mis@gmail.com>
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/device.h>
8 #include <zephyr/kernel.h>
9
10 #include <zephyr/drivers/misc/ft8xx/ft8xx.h>
11 #include <zephyr/drivers/misc/ft8xx/ft8xx_copro.h>
12 #include <zephyr/drivers/misc/ft8xx/ft8xx_dl.h>
13
14 /**
15 * @file Display a counter using FT800.
16 */
17
18 /* sleep time in msec */
19 #define SLEEPTIME 100
20
21 /* touch tags */
22 #define TAG_PLUS 1
23 #define TAG_MINUS 2
24
25 static volatile bool process_touch;
26
touch_irq(const struct device * dev,void * user_data)27 static void touch_irq(const struct device *dev, void *user_data)
28 {
29 (void)dev;
30 (void)user_data;
31
32 process_touch = true;
33 }
34
main(void)35 int main(void)
36 {
37 const struct device *ft8xx = DEVICE_DT_GET_ONE(ftdi_ft800);
38 int cnt;
39 int val;
40 struct ft8xx_touch_transform tt;
41
42 if (!device_is_ready(ft8xx)) {
43 printk("FT8xx device is not ready. Aborting\n");
44 return -1;
45 }
46
47 /* To get touch events calibrate the display */
48 ft8xx_calibrate(ft8xx, &tt);
49
50 /* Get interrupts on touch event */
51 ft8xx_register_int(ft8xx, touch_irq, NULL);
52
53 /* Starting counting */
54 val = 0;
55 cnt = 0;
56
57 while (1) {
58 /* Start Display List */
59 ft8xx_copro_cmd_dlstart(ft8xx);
60 ft8xx_copro_cmd(ft8xx, FT8XX_CLEAR_COLOR_RGB(0x00, 0x00, 0x00));
61 ft8xx_copro_cmd(ft8xx, FT8XX_CLEAR(1, 1, 1));
62
63 /* Set color */
64 ft8xx_copro_cmd(ft8xx, FT8XX_COLOR_RGB(0xf0, 0xf0, 0xf0));
65
66 /* Display the counter */
67 ft8xx_copro_cmd_number(ft8xx, 20, 20, 29, FT8XX_OPT_SIGNED, cnt);
68 cnt++;
69
70 /* Display the hello message */
71 ft8xx_copro_cmd_text(ft8xx, 20, 70, 30, 0, "Hello,");
72 /* Set Zephyr color */
73 ft8xx_copro_cmd(ft8xx, FT8XX_COLOR_RGB(0x78, 0x29, 0xd2));
74 ft8xx_copro_cmd_text(ft8xx, 20, 105, 30, 0, "Zephyr!");
75
76 /* Display value set with buttons */
77 ft8xx_copro_cmd(ft8xx, FT8XX_COLOR_RGB(0xff, 0xff, 0xff));
78 ft8xx_copro_cmd_number(ft8xx, 80, 170, 29,
79 FT8XX_OPT_SIGNED | FT8XX_OPT_RIGHTX,
80 val);
81 ft8xx_copro_cmd(ft8xx, FT8XX_TAG(TAG_PLUS));
82 ft8xx_copro_cmd_text(ft8xx, 90, 160, 31, 0, "+");
83 ft8xx_copro_cmd(ft8xx, FT8XX_TAG(TAG_MINUS));
84 ft8xx_copro_cmd_text(ft8xx, 20, 160, 31, 0, "-");
85
86 /* Finish Display List */
87 ft8xx_copro_cmd(ft8xx, FT8XX_DISPLAY());
88 /* Display created frame */
89 ft8xx_copro_cmd_swap(ft8xx);
90
91 if (process_touch) {
92 int tag = ft8xx_get_touch_tag(ft8xx);
93
94 if (tag == TAG_PLUS) {
95 val++;
96 } else if (tag == TAG_MINUS) {
97 val--;
98 }
99
100 process_touch = false;
101 }
102
103 /* Wait a while */
104 k_msleep(SLEEPTIME);
105 }
106 return 0;
107 }
108
