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* Copyright (c) 2016 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr.h>
#include <device.h>
#include <sensor.h>
#include <misc/printk.h>
#include <misc/util.h>
#ifdef CONFIG_GROVE_LCD_RGB
#include <display/grove_lcd.h>
#include <stdio.h>
#include <string.h>
#endif
struct channel_info {
int chan;
char *dev_name;
};
/* change device names if you want to use different sensors */
static struct channel_info info[] = {
{ SENSOR_CHAN_TEMP, "TH02" },
{ SENSOR_CHAN_HUMIDITY, "TH02" },
};
void main(void)
{
struct device *dev[ARRAY_SIZE(info)];
struct sensor_value val[ARRAY_SIZE(info)];
unsigned int i;
int rc;
for (i = 0; i < ARRAY_SIZE(info); i++) {
dev[i] = device_get_binding(info[i].dev_name);
if (dev[i] == NULL) {
printk("Failed to get \"%s\" device\n",
info[i].dev_name);
return;
}
}
#ifdef CONFIG_GROVE_LCD_RGB
struct device *glcd;
glcd = device_get_binding(GROVE_LCD_NAME);
if (glcd == NULL) {
printk("Failed to get Grove LCD\n");
return;
}
/* configure LCD */
glcd_function_set(glcd, GLCD_FS_ROWS_2 | GLCD_FS_DOT_SIZE_LITTLE |
GLCD_FS_8BIT_MODE);
glcd_display_state_set(glcd, GLCD_DS_DISPLAY_ON);
#endif
while (1) {
/* fetch sensor samples */
for (i = 0; i < ARRAY_SIZE(info); i++) {
rc = sensor_sample_fetch(dev[i]);
if (rc) {
printk("Failed to fetch sample for device %s (%d)\n",
info[i].dev_name, rc);
}
}
for (i = 0; i < ARRAY_SIZE(info); i++) {
rc = sensor_channel_get(dev[i], info[i].chan, &val[i]);
if (rc) {
printk("Failed to get data for device %s (%d)\n",
info[i].dev_name, rc);
continue;
}
}
#ifdef CONFIG_GROVE_LCD_RGB
char row[16];
/* clear LCD */
memset(row, ' ', sizeof(row));
glcd_cursor_pos_set(glcd, 0, 0);
glcd_print(glcd, row, sizeof(row));
glcd_cursor_pos_set(glcd, 0, 1);
glcd_print(glcd, row, sizeof(row));
/* display temperature on LCD */
glcd_cursor_pos_set(glcd, 0, 0);
sprintf(row, "T:%.1f%cC", sensor_value_to_double(val),
223 /* degree symbol */);
glcd_print(glcd, row, strlen(row));
/* display himidity on LCD */
glcd_cursor_pos_set(glcd, 17 - strlen(row), 0);
sprintf(row, "RH:%.0f%c", sensor_value_to_double(val + 1),
37 /* percent symbol */);
glcd_print(glcd, row, strlen(row));
#endif
k_sleep(2000);
}
}
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