| /* |
| * Copyright (c) 2021 Teslabs Engineering S.L. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <stdio.h> |
| |
| #include <zephyr/zephyr.h> |
| #include <zephyr/device.h> |
| #include <zephyr/drivers/sensor.h> |
| |
| /** |
| * @file Sample app using the MAX6675 cold-junction-compensated K-thermocouple |
| * to digital converter. |
| * |
| * This app will read and display the sensor temperature every second. |
| */ |
| |
| void main(void) |
| { |
| const struct device *dev; |
| struct sensor_value val; |
| |
| dev = device_get_binding(DT_LABEL(DT_INST(0, maxim_max6675))); |
| if (dev == NULL) { |
| printf("Could not obtain MAX6675 device\n"); |
| return; |
| } |
| |
| while (1) { |
| int ret; |
| |
| ret = sensor_sample_fetch_chan(dev, SENSOR_CHAN_AMBIENT_TEMP); |
| if (ret < 0) { |
| printf("Could not fetch temperature (%d)\n", ret); |
| return; |
| } |
| |
| ret = sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &val); |
| if (ret < 0) { |
| printf("Could not get temperature (%d)\n", ret); |
| return; |
| } |
| |
| printf("Temperature: %.2f C\n", sensor_value_to_double(&val)); |
| |
| k_sleep(K_MSEC(1000)); |
| } |
| } |