kopia lustrzana https://github.com/micropython/micropython
195 wiersze
6.8 KiB
C
195 wiersze
6.8 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* Development of the code in this file was sponsored by Microbric Pty Ltd
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013-2015 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 <stdint.h>
|
|
#include <stdio.h>
|
|
|
|
#include "driver/timer.h"
|
|
#include "py/obj.h"
|
|
#include "py/runtime.h"
|
|
#include "modmachine.h"
|
|
#include "mphalport.h"
|
|
|
|
#define TIMER_INTR_SEL TIMER_INTR_LEVEL
|
|
#define TIMER_DIVIDER 40000
|
|
#define TIMER_SCALE (TIMER_BASE_CLK / TIMER_DIVIDER)
|
|
|
|
#define TIMER_FLAGS 0
|
|
|
|
typedef struct _machine_timer_obj_t {
|
|
mp_obj_base_t base;
|
|
mp_uint_t group;
|
|
mp_uint_t index;
|
|
|
|
mp_uint_t repeat;
|
|
mp_uint_t period;
|
|
|
|
mp_obj_t callback;
|
|
|
|
intr_handle_t handle;
|
|
} machine_timer_obj_t;
|
|
|
|
const mp_obj_type_t machine_timer_type;
|
|
|
|
STATIC esp_err_t check_esp_err(esp_err_t code) {
|
|
if (code) {
|
|
mp_raise_OSError(code);
|
|
}
|
|
|
|
return code;
|
|
}
|
|
|
|
STATIC void machine_timer_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
|
|
machine_timer_obj_t *self = self_in;
|
|
|
|
timer_config_t config;
|
|
mp_printf(print, "Timer(%p; ", self);
|
|
|
|
timer_get_config(self->group, self->index, &config);
|
|
|
|
mp_printf(print, "alarm_en=%d, ", config.alarm_en);
|
|
mp_printf(print, "auto_reload=%d, ", config.auto_reload);
|
|
mp_printf(print, "counter_en=%d)", config.counter_en);
|
|
}
|
|
|
|
STATIC mp_obj_t machine_timer_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);
|
|
machine_timer_obj_t *self = m_new_obj(machine_timer_obj_t);
|
|
self->base.type = &machine_timer_type;
|
|
|
|
self->group = (mp_obj_get_int(args[0]) >> 1) & 1;
|
|
self->index = mp_obj_get_int(args[0]) & 1;
|
|
|
|
return self;
|
|
}
|
|
|
|
STATIC void machine_timer_disable(machine_timer_obj_t *self) {
|
|
if (self->handle) {
|
|
timer_pause(self->group, self->index);
|
|
esp_intr_free(self->handle);
|
|
self->handle = NULL;
|
|
}
|
|
}
|
|
|
|
STATIC void machine_timer_isr(void *self_in) {
|
|
machine_timer_obj_t *self = self_in;
|
|
timg_dev_t *device = self->group ? &(TIMERG1) : &(TIMERG0);
|
|
|
|
device->hw_timer[self->index].update = 1;
|
|
if (self->index) {
|
|
device->int_clr_timers.t1 = 1;
|
|
} else {
|
|
device->int_clr_timers.t0 = 1;
|
|
}
|
|
device->hw_timer[self->index].config.alarm_en = self->repeat;
|
|
|
|
mp_sched_schedule(self->callback, self);
|
|
mp_hal_wake_main_task_from_isr();
|
|
}
|
|
|
|
STATIC void machine_timer_enable(machine_timer_obj_t *self) {
|
|
timer_config_t config;
|
|
config.alarm_en = TIMER_ALARM_EN;
|
|
config.auto_reload = self->repeat;
|
|
config.counter_dir = TIMER_COUNT_UP;
|
|
config.divider = TIMER_DIVIDER;
|
|
config.intr_type = TIMER_INTR_LEVEL;
|
|
config.counter_en = TIMER_PAUSE;
|
|
|
|
check_esp_err(timer_init(self->group, self->index, &config));
|
|
check_esp_err(timer_set_counter_value(self->group, self->index, 0x00000000));
|
|
check_esp_err(timer_set_alarm_value(self->group, self->index, self->period));
|
|
check_esp_err(timer_enable_intr(self->group, self->index));
|
|
check_esp_err(timer_isr_register(self->group, self->index, machine_timer_isr, (void*)self, TIMER_FLAGS, &self->handle));
|
|
check_esp_err(timer_start(self->group, self->index));
|
|
}
|
|
|
|
STATIC mp_obj_t machine_timer_init_helper(machine_timer_obj_t *self, mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
|
|
static const mp_arg_t allowed_args[] = {
|
|
{ MP_QSTR_period, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0xffffffff} },
|
|
{ MP_QSTR_mode, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1} },
|
|
{ MP_QSTR_callback, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
|
|
};
|
|
|
|
machine_timer_disable(self);
|
|
|
|
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
|
|
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
|
|
|
|
// Timer uses an 80MHz base clock, which is divided by the divider/scalar, we then convert to ms.
|
|
self->period = (args[0].u_int * TIMER_BASE_CLK) / (1000 * TIMER_DIVIDER);
|
|
self->repeat = args[1].u_int;
|
|
self->callback = args[2].u_obj;
|
|
self->handle = NULL;
|
|
|
|
machine_timer_enable(self);
|
|
|
|
return mp_const_none;
|
|
}
|
|
|
|
STATIC mp_obj_t machine_timer_deinit(mp_obj_t self_in) {
|
|
machine_timer_disable(self_in);
|
|
|
|
return mp_const_none;
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_timer_deinit_obj, machine_timer_deinit);
|
|
|
|
STATIC mp_obj_t machine_timer_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
|
|
return machine_timer_init_helper(args[0], n_args - 1, args + 1, kw_args);
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_timer_init_obj, 1, machine_timer_init);
|
|
|
|
STATIC mp_obj_t machine_timer_value(mp_obj_t self_in) {
|
|
machine_timer_obj_t *self = self_in;
|
|
double result;
|
|
|
|
timer_get_counter_time_sec(self->group, self->index, &result);
|
|
|
|
return MP_OBJ_NEW_SMALL_INT((mp_uint_t)(result * 1000)); // value in ms
|
|
}
|
|
STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_timer_value_obj, machine_timer_value);
|
|
|
|
STATIC const mp_rom_map_elem_t machine_timer_locals_dict_table[] = {
|
|
{ MP_ROM_QSTR(MP_QSTR___del__), MP_ROM_PTR(&machine_timer_deinit_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_timer_deinit_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_timer_init_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&machine_timer_value_obj) },
|
|
{ MP_ROM_QSTR(MP_QSTR_ONE_SHOT), MP_ROM_INT(false) },
|
|
{ MP_ROM_QSTR(MP_QSTR_PERIODIC), MP_ROM_INT(true) },
|
|
};
|
|
STATIC MP_DEFINE_CONST_DICT(machine_timer_locals_dict, machine_timer_locals_dict_table);
|
|
|
|
const mp_obj_type_t machine_timer_type = {
|
|
{ &mp_type_type },
|
|
.name = MP_QSTR_Timer,
|
|
.print = machine_timer_print,
|
|
.make_new = machine_timer_make_new,
|
|
.locals_dict = (mp_obj_t)&machine_timer_locals_dict,
|
|
};
|