1 /*
2 * Copyright (c) 2016 Intel Corporation
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr.h>
8 #include <init.h>
9 #include <stdio.h>
10 #include <drivers/sensor.h>
11
12 #ifdef CONFIG_GROVE_LCD_RGB
13 #include <display/grove_lcd.h>
14 #include <stdio.h>
15 #include <string.h>
16 #endif
17
18 #define SLEEP_TIME K_MSEC(1000)
19
main(void)20 void main(void)
21 {
22 const struct device *dev =
23 device_get_binding(DT_LABEL(DT_INST(0,
24 seeed_grove_temperature)));
25 struct sensor_value temp;
26 int read;
27
28 if (dev == NULL) {
29 printf("device not found. aborting test.\n");
30 return;
31 }
32 #ifdef CONFIG_GROVE_LCD_RGB
33 const struct device *glcd;
34
35 glcd = device_get_binding(GROVE_LCD_NAME);
36 if (glcd == NULL) {
37 printf("Failed to get Grove LCD\n");
38 return;
39 }
40
41 /* configure LCD */
42 glcd_function_set(glcd, GLCD_FS_ROWS_2 | GLCD_FS_DOT_SIZE_LITTLE |
43 GLCD_FS_8BIT_MODE);
44 glcd_display_state_set(glcd, GLCD_DS_DISPLAY_ON);
45 #endif
46
47 while (1) {
48
49 read = sensor_sample_fetch(dev);
50 if (read) {
51 printk("sample fetch error\n");
52 continue;
53 }
54 sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &temp);
55 #ifdef CONFIG_GROVE_LCD_RGB
56 char row[16];
57
58 /* clear LCD */
59 (void)memset(row, ' ', sizeof(row));
60 glcd_cursor_pos_set(glcd, 0, 0);
61 glcd_print(glcd, row, sizeof(row));
62 glcd_cursor_pos_set(glcd, 0, 1);
63 glcd_print(glcd, row, sizeof(row));
64
65 /* display temperature on LCD */
66 glcd_cursor_pos_set(glcd, 0, 0);
67 #ifdef CONFIG_NEWLIB_LIBC_FLOAT_PRINTF
68 sprintf(row, "T:%.2f%cC",
69 sensor_value_to_double(&temp),
70 223 /* degree symbol */);
71 #else
72 sprintf(row, "T:%d%cC", temp.val1,
73 223 /* degree symbol */);
74 #endif
75 glcd_print(glcd, row, strlen(row));
76
77 #endif
78
79 #ifdef CONFIG_NEWLIB_LIBC_FLOAT_PRINTF
80 printf("Temperature: %.2f C\n", sensor_value_to_double(&temp));
81 #else
82 printk("Temperature: %d\n", temp.val1);
83 #endif
84 k_sleep(SLEEP_TIME);
85 }
86 }
87
