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modonewire.c
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);