257 lines
9.5 KiB
C
257 lines
9.5 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2015 Damien P. George
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* Copyright (c) 2016 Paul Sokolovsky
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "extmod/machine_mem.h"
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#include "extmod/machine_pulse.h"
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#include "extmod/machine_i2c.h"
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#include "modpyb.h"
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#include "modpybrtc.h"
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#include "xtirq.h"
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#include "os_type.h"
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#include "osapi.h"
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#include "etshal.h"
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#include "ets_alt_task.h"
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#include "user_interface.h"
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#if MICROPY_PY_MACHINE
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//#define MACHINE_WAKE_IDLE (0x01)
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//#define MACHINE_WAKE_SLEEP (0x02)
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#define MACHINE_WAKE_DEEPSLEEP (0x04)
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STATIC mp_obj_t machine_freq(mp_uint_t n_args, const mp_obj_t *args) {
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if (n_args == 0) {
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// get
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return mp_obj_new_int(system_get_cpu_freq() * 1000000);
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} else {
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// set
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mp_int_t freq = mp_obj_get_int(args[0]) / 1000000;
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if (freq != 80 && freq != 160) {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
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"frequency can only be either 80Mhz or 160MHz"));
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}
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system_update_cpu_freq(freq);
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return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_freq_obj, 0, 1, machine_freq);
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STATIC mp_obj_t machine_reset(void) {
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system_restart();
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);
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STATIC mp_obj_t machine_reset_cause(void) {
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return MP_OBJ_NEW_SMALL_INT(system_get_rst_info()->reason);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_cause_obj, machine_reset_cause);
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STATIC mp_obj_t machine_unique_id(void) {
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uint32_t id = system_get_chip_id();
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return mp_obj_new_bytes((byte*)&id, sizeof(id));
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_unique_id_obj, machine_unique_id);
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STATIC mp_obj_t machine_deepsleep(void) {
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// default to sleep forever
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uint32_t sleep_us = 0;
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// see if RTC.ALARM0 should wake the device
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if (pyb_rtc_alarm0_wake & MACHINE_WAKE_DEEPSLEEP) {
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uint64_t t = pyb_rtc_get_us_since_2000();
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if (pyb_rtc_alarm0_expiry <= t) {
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sleep_us = 1; // alarm already expired so wake immediately
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} else {
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uint64_t delta = pyb_rtc_alarm0_expiry - t;
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if (delta <= 0xffffffff) {
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// sleep for the desired time
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sleep_us = delta;
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} else {
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// overflow, just set to maximum sleep time
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sleep_us = 0xffffffff;
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}
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}
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}
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// put the device in a deep-sleep state
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system_deep_sleep_set_option(0); // default power down mode; TODO check this
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system_deep_sleep(sleep_us);
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for (;;) {
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// we must not return
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ets_loop_iter();
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_deepsleep_obj, machine_deepsleep);
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typedef struct _esp_timer_obj_t {
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mp_obj_base_t base;
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os_timer_t timer;
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mp_obj_t callback;
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} esp_timer_obj_t;
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const mp_obj_type_t esp_timer_type;
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STATIC void esp_timer_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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esp_timer_obj_t *self = self_in;
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mp_printf(print, "Timer(%p)", &self->timer);
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}
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STATIC mp_obj_t esp_timer_make_new(const mp_obj_type_t *type, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) {
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mp_arg_check_num(n_args, n_kw, 1, 1, false);
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esp_timer_obj_t *tim = m_new_obj(esp_timer_obj_t);
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tim->base.type = &esp_timer_type;
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return tim;
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}
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STATIC void esp_timer_cb(void *arg) {
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esp_timer_obj_t *self = arg;
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mp_call_function_1_protected(self->callback, self);
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}
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STATIC mp_obj_t esp_timer_init_helper(esp_timer_obj_t *self, mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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static const mp_arg_t allowed_args[] = {
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// { MP_QSTR_freq, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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{ MP_QSTR_period, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0xffffffff} },
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{ MP_QSTR_mode, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1} },
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{ MP_QSTR_callback, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
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};
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// parse args
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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self->callback = args[2].u_obj;
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// Be sure to disarm timer before making any changes
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os_timer_disarm(&self->timer);
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os_timer_setfn(&self->timer, esp_timer_cb, self);
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os_timer_arm(&self->timer, args[0].u_int, args[1].u_int);
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return mp_const_none;
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}
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STATIC mp_obj_t esp_timer_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
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return esp_timer_init_helper(args[0], n_args - 1, args + 1, kw_args);
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_timer_init_obj, 1, esp_timer_init);
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STATIC mp_obj_t esp_timer_deinit(mp_obj_t self_in) {
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esp_timer_obj_t *self = self_in;
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os_timer_disarm(&self->timer);
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_timer_deinit_obj, esp_timer_deinit);
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STATIC const mp_map_elem_t esp_timer_locals_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&esp_timer_deinit_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&esp_timer_init_obj },
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// { MP_OBJ_NEW_QSTR(MP_QSTR_callback), (mp_obj_t)&esp_timer_callback_obj },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ONE_SHOT), MP_OBJ_NEW_SMALL_INT(false) },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_PERIODIC), MP_OBJ_NEW_SMALL_INT(true) },
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};
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STATIC MP_DEFINE_CONST_DICT(esp_timer_locals_dict, esp_timer_locals_dict_table);
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const mp_obj_type_t esp_timer_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Timer,
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.print = esp_timer_print,
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.make_new = esp_timer_make_new,
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.locals_dict = (mp_obj_t)&esp_timer_locals_dict,
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};
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// this bit is unused in the Xtensa PS register
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#define ETS_LOOP_ITER_BIT (12)
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STATIC mp_obj_t machine_disable_irq(void) {
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uint32_t state = disable_irq();
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state = (state & ~(1 << ETS_LOOP_ITER_BIT)) | (ets_loop_iter_disable << ETS_LOOP_ITER_BIT);
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ets_loop_iter_disable = 1;
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return mp_obj_new_int(state);
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}
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MP_DEFINE_CONST_FUN_OBJ_0(machine_disable_irq_obj, machine_disable_irq);
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STATIC mp_obj_t machine_enable_irq(mp_obj_t state_in) {
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uint32_t state = mp_obj_get_int(state_in);
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ets_loop_iter_disable = (state >> ETS_LOOP_ITER_BIT) & 1;
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enable_irq(state & ~(1 << ETS_LOOP_ITER_BIT));
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(machine_enable_irq_obj, machine_enable_irq);
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STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_umachine) },
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{ MP_ROM_QSTR(MP_QSTR_mem8), MP_ROM_PTR(&machine_mem8_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem16), MP_ROM_PTR(&machine_mem16_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem32), MP_ROM_PTR(&machine_mem32_obj) },
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{ MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
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{ MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&machine_reset_obj) },
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{ MP_ROM_QSTR(MP_QSTR_reset_cause), MP_ROM_PTR(&machine_reset_cause_obj) },
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{ MP_ROM_QSTR(MP_QSTR_unique_id), MP_ROM_PTR(&machine_unique_id_obj) },
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{ MP_ROM_QSTR(MP_QSTR_deepsleep), MP_ROM_PTR(&machine_deepsleep_obj) },
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{ MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&machine_disable_irq_obj) },
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{ MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&machine_enable_irq_obj) },
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{ MP_ROM_QSTR(MP_QSTR_time_pulse_us), MP_ROM_PTR(&machine_time_pulse_us_obj) },
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{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&pyb_rtc_type) },
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{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&esp_timer_type) },
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{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&pyb_pin_type) },
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{ MP_ROM_QSTR(MP_QSTR_PWM), MP_ROM_PTR(&pyb_pwm_type) },
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{ MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&pyb_adc_type) },
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{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&pyb_uart_type) },
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{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&machine_i2c_type) },
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{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&pyb_spi_type) },
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// wake abilities
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{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP), MP_ROM_INT(MACHINE_WAKE_DEEPSLEEP) },
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// reset causes
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{ MP_ROM_QSTR(MP_QSTR_PWR_ON_RESET), MP_ROM_INT(REASON_EXT_SYS_RST) },
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{ MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(REASON_EXT_SYS_RST) },
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{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(REASON_DEEP_SLEEP_AWAKE) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_module_globals, machine_module_globals_table);
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const mp_obj_module_t mp_module_machine = {
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.base = { &mp_type_module },
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.name = MP_QSTR_umachine,
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.globals = (mp_obj_dict_t*)&machine_module_globals,
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};
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#endif // MICROPY_PY_MACHINE
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