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