circuitpython/extmod/utime_mphal.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2016 Damien P. George
* Copyright (c) 2016 Paul Sokolovsky
*
* 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/mpconfig.h"
#if MICROPY_PY_UTIME_MP_HAL
#include <string.h>
#include "py/obj.h"
#include "py/mphal.h"
#include "py/smallint.h"
#include "py/runtime.h"
#include "extmod/utime_mphal.h"
STATIC mp_obj_t time_sleep(mp_obj_t seconds_o) {
#if MICROPY_PY_BUILTINS_FLOAT
mp_hal_delay_ms((mp_uint_t)(1000 * mp_obj_get_float(seconds_o)));
#else
mp_hal_delay_ms(1000 * mp_obj_get_int(seconds_o));
#endif
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_sleep_obj, time_sleep);
STATIC mp_obj_t time_sleep_ms(mp_obj_t arg) {
mp_int_t ms = mp_obj_get_int(arg);
if (ms > 0) {
mp_hal_delay_ms(ms);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_sleep_ms_obj, time_sleep_ms);
STATIC mp_obj_t time_sleep_us(mp_obj_t arg) {
mp_int_t us = mp_obj_get_int(arg);
if (us > 0) {
mp_hal_delay_us(us);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_utime_sleep_us_obj, time_sleep_us);
STATIC mp_obj_t time_ticks_ms(void) {
return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_ms() & (MICROPY_PY_UTIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_utime_ticks_ms_obj, time_ticks_ms);
STATIC mp_obj_t time_ticks_us(void) {
return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_us() & (MICROPY_PY_UTIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_utime_ticks_us_obj, time_ticks_us);
STATIC mp_obj_t time_ticks_cpu(void) {
return MP_OBJ_NEW_SMALL_INT(mp_hal_ticks_cpu() & (MICROPY_PY_UTIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_0(mp_utime_ticks_cpu_obj, time_ticks_cpu);
STATIC mp_obj_t time_ticks_diff(mp_obj_t end_in, mp_obj_t start_in) {
// we assume that the arguments come from ticks_xx so are small ints
mp_uint_t start = MP_OBJ_SMALL_INT_VALUE(start_in);
mp_uint_t end = MP_OBJ_SMALL_INT_VALUE(end_in);
// Optimized formula avoiding if conditions. We adjust difference "forward",
// wrap it around and adjust back.
mp_int_t diff = ((end - start + MICROPY_PY_UTIME_TICKS_PERIOD / 2) & (MICROPY_PY_UTIME_TICKS_PERIOD - 1))
- MICROPY_PY_UTIME_TICKS_PERIOD / 2;
return MP_OBJ_NEW_SMALL_INT(diff);
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_utime_ticks_diff_obj, time_ticks_diff);
STATIC mp_obj_t time_ticks_add(mp_obj_t ticks_in, mp_obj_t delta_in) {
// we assume that first argument come from ticks_xx so is small int
mp_uint_t ticks = MP_OBJ_SMALL_INT_VALUE(ticks_in);
mp_uint_t delta = mp_obj_get_int(delta_in);
return MP_OBJ_NEW_SMALL_INT((ticks + delta) & (MICROPY_PY_UTIME_TICKS_PERIOD - 1));
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_utime_ticks_add_obj, time_ticks_add);
#endif // MICROPY_PY_UTIME_MP_HAL