micropython/ports/zephyr/zephyr_device.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2024 Analog Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "zephyr_device.h"
#include "py/runtime.h"

const struct device *zephyr_device_find(mp_obj_t name) {
    const char *dev_name = mp_obj_str_get_str(name);
    const struct device *dev = device_get_binding(dev_name);

    #ifdef CONFIG_DEVICE_DT_METADATA
    if (dev == NULL) {
        dev = device_get_by_dt_nodelabel(dev_name);
    }
    #endif

    if (dev == NULL) {
        #if MICROPY_ERROR_REPORTING <= MICROPY_ERROR_REPORTING_TERSE
        mp_raise_ValueError(MP_ERROR_TEXT("device not found"));
        #else
        mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("device %s not found"), dev_name);
        #endif
    }

    return dev;
}

const char *zephyr_device_get_name(const struct device *dev) {
    #ifdef CONFIG_DEVICE_DT_METADATA
    const struct device_dt_nodelabels *nl = device_get_dt_nodelabels(dev);

    if (nl != NULL && nl->num_nodelabels > 0) {
        return nl->nodelabels[0];
    }
    #endif

    return dev->name;
}