machine_led.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2020 Philipp Ebensberger
 *
 * 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 "py/runtime.h"
#include "py/mphal.h"
#include "led.h"

#if NUM_LEDS

STATIC void led_obj_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
    (void)kind;
    machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
    mp_printf(print, "LED(%u)", self->led_id);
}

STATIC mp_obj_t led_obj_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
    mp_arg_check_num(n_args, n_kw, 1, 1, false);

    // Extract arguments
    mp_int_t led_id = mp_obj_get_int(args[0]);

    // Check led id is in range
    if (!(1 <= led_id && led_id <= NUM_LEDS)) {
        mp_raise_msg_varg(&mp_type_ValueError, "LED(%d) doesn't exist", led_id);
    }

    // Return reference to static object
    return MP_OBJ_FROM_PTR(&machine_led_obj[led_id - 1]);
}

STATIC mp_obj_t led_obj_on(mp_obj_t self_in) {
    machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
    MICROPY_HW_LED_ON(self->led_pin);
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_on_obj, led_obj_on);

STATIC mp_obj_t led_obj_off(mp_obj_t self_in) {
    machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
    MICROPY_HW_LED_OFF(self->led_pin);
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_off_obj, led_obj_off);

STATIC mp_obj_t led_obj_toggle(mp_obj_t self_in) {
    machine_led_obj_t *self = MP_OBJ_TO_PTR(self_in);
    mp_hal_pin_toggle(self->led_pin);
    return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(led_obj_toggle_obj, led_obj_toggle);

STATIC const mp_rom_map_elem_t led_locals_dict_table[] = {
    {MP_ROM_QSTR(MP_QSTR_on), MP_ROM_PTR(&led_obj_on_obj)},
    {MP_ROM_QSTR(MP_QSTR_off), MP_ROM_PTR(&led_obj_off_obj)},
    {MP_ROM_QSTR(MP_QSTR_toggle), MP_ROM_PTR(&led_obj_toggle_obj)},
};

STATIC MP_DEFINE_CONST_DICT(led_locals_dict, led_locals_dict_table);

const mp_obj_type_t machine_led_type = {
    {&mp_type_type},
    .name = MP_QSTR_LED,
    .print = led_obj_print,
    .make_new = led_obj_make_new,
    .locals_dict = (mp_obj_dict_t *)&led_locals_dict,
};

#endif