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modonewire.c

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  • modonewire.c 4.55 KiB
    /*
     * This file is part of the MicroPython project, http://micropython.org/
     *
     * The MIT License (MIT)
     *
     * Copyright (c) 2015 Damien P. George
     *
     * 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 <stdio.h>
    #include <stdint.h>
    
    #include "py/obj.h"
    #include "py/mphal.h"
    #include "modpyb.h"
    #include "esponewire.h"
    
    STATIC mp_obj_t onewire_timings(mp_obj_t timings_in) {
        mp_obj_t *items;
        mp_obj_get_array_fixed_n(timings_in, 9, &items);
        for (int i = 0; i < 9; ++i) {
            esp_onewire_timings[i] = mp_obj_get_int(items[i]);
        }
        return mp_const_none;
    }
    STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_timings_obj, onewire_timings);
    
    STATIC mp_obj_t onewire_reset(mp_obj_t pin_in) {
        return mp_obj_new_bool(esp_onewire_reset(mp_obj_get_pin(pin_in)));
    }
    STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_reset_obj, onewire_reset);
    
    STATIC mp_obj_t onewire_readbit(mp_obj_t pin_in) {
        return MP_OBJ_NEW_SMALL_INT(esp_onewire_readbit(mp_obj_get_pin(pin_in)));
    }
    STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_readbit_obj, onewire_readbit);
    
    STATIC mp_obj_t onewire_readbyte(mp_obj_t pin_in) {
        uint pin = mp_obj_get_pin(pin_in);
        uint8_t value = 0;
        for (int i = 0; i < 8; ++i) {
            value |= esp_onewire_readbit(pin) << i;
        }
        return MP_OBJ_NEW_SMALL_INT(value);
    }
    STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_readbyte_obj, onewire_readbyte);
    
    STATIC mp_obj_t onewire_writebit(mp_obj_t pin_in, mp_obj_t value_in) {
        esp_onewire_writebit(mp_obj_get_pin(pin_in), mp_obj_get_int(value_in));
        return mp_const_none;
    }
    STATIC MP_DEFINE_CONST_FUN_OBJ_2(onewire_writebit_obj, onewire_writebit);