circuitpython/nrf5/timer.c

122 lines
4.0 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2016 Glenn Ruben Bakke
*
* 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 <string.h>
#include "py/nlr.h"
#include "py/runtime.h"
#include "py/mphal.h"
#include "timer.h"
#include "hal_timer.h"
#if MICROPY_PY_MACHINE_TIMER
typedef struct _machine_timer_obj_t {
mp_obj_base_t base;
Timer_HandleTypeDef *timer;
} machine_timer_obj_t;
Timer_HandleTypeDef TimerHandle0 = {.instance = NULL, .id = 0};
Timer_HandleTypeDef TimerHandle1 = {.instance = NULL, .id = 1};
Timer_HandleTypeDef TimerHandle2 = {.instance = NULL, .id = 2};
STATIC const machine_timer_obj_t machine_timer_obj[] = {
{{&machine_timer_type}, &TimerHandle0},
{{&machine_timer_type}, &TimerHandle1},
{{&machine_timer_type}, &TimerHandle2},
};
void timer_init0(void) {
// reset the Timer handles
memset(&TimerHandle0, 0, sizeof(Timer_HandleTypeDef));
TimerHandle0.instance = TIMER0;
memset(&TimerHandle1, 0, sizeof(Timer_HandleTypeDef));
TimerHandle0.instance = TIMER1;
memset(&TimerHandle2, 0, sizeof(Timer_HandleTypeDef));
TimerHandle0.instance = TIMER2;
}
STATIC int timer_find(mp_obj_t id) {
// given an integer id
int timer_id = mp_obj_get_int(id);
if (timer_id >= 0 && timer_id <= MP_ARRAY_SIZE(machine_timer_obj)
&& machine_timer_obj[timer_id].timer != NULL) {
return timer_id;
}
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
"Timer(%d) does not exist", timer_id));
}
STATIC void timer_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
machine_timer_obj_t *self = o;
mp_printf(print, "Timer(%u)", self->timer->id);
}
/******************************************************************************/
/* MicroPython bindings for machine API */
// for make_new
enum {
ARG_NEW_id,
};
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 *all_args) {
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_id, MP_ARG_OBJ, {.u_obj = MP_OBJ_NEW_SMALL_INT(-1)} },
};
// parse args
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
if (args[ARG_NEW_id].u_obj == MP_OBJ_NEW_SMALL_INT(-1)) {
// index -1 does not exist
return mp_const_none;
// TODO: raise exception
}
// get static peripheral object
int timer_id = timer_find(args[ARG_NEW_id].u_obj);
const machine_timer_obj_t *self = &machine_timer_obj[timer_id];
hal_timer_init(self->timer->instance, &self->timer->init);
return MP_OBJ_FROM_PTR(self);
}
const mp_obj_type_t machine_timer_type = {
{ &mp_type_type },
.name = MP_QSTR_Timer,
.print = timer_print,
.make_new = machine_timer_make_new,
#if 0
.locals_dict = (mp_obj_t)&machine_timer_locals_dict
#endif
};
#endif // MICROPY_PY_MACHINE_TIMER