| /* |
| * Copyright (c) 2019, Linaro Ltd. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/zephyr.h> |
| #include <zephyr/device.h> |
| #include <zephyr/drivers/sensor.h> |
| #include <stdio.h> |
| #include <zephyr/sys/printk.h> |
| |
| |
| static int32_t read_sensor(const struct device *sensor) |
| { |
| struct sensor_value val[3]; |
| int32_t ret = 0; |
| |
| ret = sensor_sample_fetch(sensor); |
| if (ret) { |
| printk("sensor_sample_fetch failed ret %d\n", ret); |
| goto end; |
| } |
| |
| ret = sensor_channel_get(sensor, SENSOR_CHAN_MAGN_XYZ, val); |
| if (ret < 0) { |
| printf("Cannot read sensor channels\n"); |
| goto end; |
| } |
| |
| printf("( x y z ) = ( %f %f %f )\n", sensor_value_to_double(&val[0]), |
| sensor_value_to_double(&val[1]), |
| sensor_value_to_double(&val[2])); |
| |
| end: |
| return ret; |
| } |
| |
| void main(void) |
| { |
| const struct device *dev; |
| |
| dev = device_get_binding(DT_LABEL(DT_INST(0, honeywell_hmc5883l))); |
| |
| if (dev == NULL) { |
| printk("Could not get %s device at I2C addr 0x%02X\n", |
| DT_LABEL(DT_INST(0, honeywell_hmc5883l)), |
| DT_REG_ADDR(DT_INST(0, honeywell_hmc5883l))); |
| return; |
| } |
| |
| printk("device is %p, name is %s\n", dev, dev->name); |
| |
| while (1) { |
| read_sensor(dev); |
| k_sleep(K_MSEC(1000)); |
| } |
| } |