esp8266/modmachine.c - lite/micropython - Linaro Git Browser

 /*
  * This file is part of the MicroPython project, http://micropython.org/
  *
  * 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 "py/obj.h"
 #include "py/runtime.h"
 #include "extmod/machine_mem.h"
 #include "extmod/machine_signal.h"
 #include "extmod/machine_pulse.h"
 #include "extmod/machine_i2c.h"
 #include "modmachine.h"

 #include "xtirq.h"
 #include "os_type.h"
 #include "osapi.h"
 #include "etshal.h"
 #include "ets_alt_task.h"
 #include "user_interface.h"

 #if MICROPY_PY_MACHINE

 //#define MACHINE_WAKE_IDLE (0x01)
 //#define MACHINE_WAKE_SLEEP (0x02)
 #define MACHINE_WAKE_DEEPSLEEP (0x04)

 extern const mp_obj_type_t esp_wdt_type;

 STATIC mp_obj_t machine_freq(mp_uint_t n_args, const mp_obj_t *args) {
     if (n_args == 0) {
         // get
         return mp_obj_new_int(system_get_cpu_freq() * 1000000);
     } else {
         // set
         mp_int_t freq = mp_obj_get_int(args[0]) / 1000000;
         if (freq != 80 && freq != 160) {
             nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
                     "frequency can only be either 80Mhz or 160MHz"));
         }
         system_update_cpu_freq(freq);
         return mp_const_none;
     }
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_freq_obj, 0, 1, machine_freq);

 STATIC mp_obj_t machine_reset(void) {
     system_restart();
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);

 STATIC mp_obj_t machine_reset_cause(void) {
     return MP_OBJ_NEW_SMALL_INT(system_get_rst_info()->reason);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_cause_obj, machine_reset_cause);

 STATIC mp_obj_t machine_unique_id(void) {
     uint32_t id = system_get_chip_id();
     return mp_obj_new_bytes((byte*)&id, sizeof(id));
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_unique_id_obj, machine_unique_id);

 STATIC mp_obj_t machine_idle(void) {
     uint32_t t = mp_hal_ticks_cpu();
     asm("waiti 0");
     t = mp_hal_ticks_cpu() - t;
     return MP_OBJ_NEW_SMALL_INT(t);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_idle_obj, machine_idle);

 STATIC mp_obj_t machine_sleep(void) {
     printf("Warning: not yet implemented\n");
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_sleep_obj, machine_sleep);

 STATIC mp_obj_t machine_deepsleep(void) {
     // default to sleep forever
     uint32_t sleep_us = 0;

     // see if RTC.ALARM0 should wake the device
     if (pyb_rtc_alarm0_wake & MACHINE_WAKE_DEEPSLEEP) {
         uint64_t t = pyb_rtc_get_us_since_2000();
         if (pyb_rtc_alarm0_expiry <= t) {
             sleep_us = 1; // alarm already expired so wake immediately
         } else {
             uint64_t delta = pyb_rtc_alarm0_expiry - t;
             if (delta <= 0xffffffff) {
                 // sleep for the desired time
                 sleep_us = delta;
             } else {
                 // overflow, just set to maximum sleep time
                 sleep_us = 0xffffffff;
             }
         }
     }

     // prepare for RTC reset at wake up
     rtc_prepare_deepsleep(sleep_us);
     // put the device in a deep-sleep state
     system_deep_sleep_set_option(0); // default power down mode; TODO check this
     system_deep_sleep(sleep_us);

     for (;;) {
         // we must not return
         ets_loop_iter();
     }

     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_deepsleep_obj, machine_deepsleep);

 typedef struct _esp_timer_obj_t {
     mp_obj_base_t base;
     os_timer_t timer;
     mp_obj_t callback;
 } esp_timer_obj_t;

 const mp_obj_type_t esp_timer_type;

 STATIC void esp_timer_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
     esp_timer_obj_t *self = self_in;
     mp_printf(print, "Timer(%p)", &self->timer);
 }

 STATIC mp_obj_t esp_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);
     esp_timer_obj_t *tim = m_new_obj(esp_timer_obj_t);
     tim->base.type = &esp_timer_type;
     return tim;
 }

 STATIC void esp_timer_cb(void *arg) {
     esp_timer_obj_t *self = arg;
     mp_sched_schedule(self->callback, self);
 }

 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) {
     static const mp_arg_t allowed_args[] = {
 //        { MP_QSTR_freq,         MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = mp_const_none} },
         { 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} },
     };

     // parse args
     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);

     self->callback = args[2].u_obj;
     // Be sure to disarm timer before making any changes
     os_timer_disarm(&self->timer);
     os_timer_setfn(&self->timer, esp_timer_cb, self);
     os_timer_arm(&self->timer, args[0].u_int, args[1].u_int);

     return mp_const_none;
 }

 STATIC mp_obj_t esp_timer_init(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
     return esp_timer_init_helper(args[0], n_args - 1, args + 1, kw_args);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_timer_init_obj, 1, esp_timer_init);

 STATIC mp_obj_t esp_timer_deinit(mp_obj_t self_in) {
     esp_timer_obj_t *self = self_in;
     os_timer_disarm(&self->timer);
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_timer_deinit_obj, esp_timer_deinit);

 STATIC const mp_map_elem_t esp_timer_locals_dict_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&esp_timer_deinit_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&esp_timer_init_obj },
 //    { MP_OBJ_NEW_QSTR(MP_QSTR_callback), (mp_obj_t)&esp_timer_callback_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_ONE_SHOT), MP_OBJ_NEW_SMALL_INT(false) },
     { MP_OBJ_NEW_QSTR(MP_QSTR_PERIODIC), MP_OBJ_NEW_SMALL_INT(true) },
 };
 STATIC MP_DEFINE_CONST_DICT(esp_timer_locals_dict, esp_timer_locals_dict_table);

 const mp_obj_type_t esp_timer_type = {
     { &mp_type_type },
     .name = MP_QSTR_Timer,
     .print = esp_timer_print,
     .make_new = esp_timer_make_new,
     .locals_dict = (mp_obj_t)&esp_timer_locals_dict,
 };

 // this bit is unused in the Xtensa PS register
 #define ETS_LOOP_ITER_BIT (12)

 STATIC mp_obj_t machine_disable_irq(void) {
     uint32_t state = disable_irq();
     state = (state & ~(1 << ETS_LOOP_ITER_BIT)) | (ets_loop_iter_disable << ETS_LOOP_ITER_BIT);
     ets_loop_iter_disable = 1;
     return mp_obj_new_int(state);
 }
 MP_DEFINE_CONST_FUN_OBJ_0(machine_disable_irq_obj, machine_disable_irq);

 STATIC mp_obj_t machine_enable_irq(mp_obj_t state_in) {
     uint32_t state = mp_obj_get_int(state_in);
     ets_loop_iter_disable = (state >> ETS_LOOP_ITER_BIT) & 1;
     enable_irq(state & ~(1 << ETS_LOOP_ITER_BIT));
     return mp_const_none;
 }
 MP_DEFINE_CONST_FUN_OBJ_1(machine_enable_irq_obj, machine_enable_irq);

 STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_umachine) },
     { MP_ROM_QSTR(MP_QSTR_mem8), MP_ROM_PTR(&machine_mem8_obj) },
     { MP_ROM_QSTR(MP_QSTR_mem16), MP_ROM_PTR(&machine_mem16_obj) },
     { MP_ROM_QSTR(MP_QSTR_mem32), MP_ROM_PTR(&machine_mem32_obj) },

     { MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&machine_reset_obj) },
     { MP_ROM_QSTR(MP_QSTR_reset_cause), MP_ROM_PTR(&machine_reset_cause_obj) },
     { MP_ROM_QSTR(MP_QSTR_unique_id), MP_ROM_PTR(&machine_unique_id_obj) },
     { MP_ROM_QSTR(MP_QSTR_idle), MP_ROM_PTR(&machine_idle_obj) },
     { MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&machine_sleep_obj) },
     { MP_ROM_QSTR(MP_QSTR_deepsleep), MP_ROM_PTR(&machine_deepsleep_obj) },

     { MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&machine_disable_irq_obj) },
     { MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&machine_enable_irq_obj) },

     { MP_ROM_QSTR(MP_QSTR_time_pulse_us), MP_ROM_PTR(&machine_time_pulse_us_obj) },

     { MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&pyb_rtc_type) },
     { MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&esp_timer_type) },
     { MP_ROM_QSTR(MP_QSTR_WDT), MP_ROM_PTR(&esp_wdt_type) },
     { MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&pyb_pin_type) },
     { MP_ROM_QSTR(MP_QSTR_Signal), MP_ROM_PTR(&machine_signal_type) },
     { MP_ROM_QSTR(MP_QSTR_PWM), MP_ROM_PTR(&pyb_pwm_type) },
     { MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&pyb_adc_type) },
     { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&pyb_uart_type) },
     { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&machine_i2c_type) },
     { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&machine_hspi_type) },

     // wake abilities
     { MP_ROM_QSTR(MP_QSTR_DEEPSLEEP), MP_ROM_INT(MACHINE_WAKE_DEEPSLEEP) },

     // reset causes
     { MP_ROM_QSTR(MP_QSTR_PWRON_RESET), MP_ROM_INT(REASON_DEFAULT_RST) },
     { MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(REASON_EXT_SYS_RST) },
     { MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(REASON_DEEP_SLEEP_AWAKE) },
     { MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(REASON_WDT_RST) },
     { MP_ROM_QSTR(MP_QSTR_SOFT_RESET), MP_ROM_INT(REASON_SOFT_RESTART) },
 };

 STATIC MP_DEFINE_CONST_DICT(machine_module_globals, machine_module_globals_table);

 const mp_obj_module_t mp_module_machine = {
     .base = { &mp_type_module },
     .globals = (mp_obj_dict_t*)&machine_module_globals,
 };

 #endif // MICROPY_PY_MACHINE
	/*
	* This file is part of the MicroPython project, http://micropython.org/
	*
	* 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 "py/obj.h"
	#include "py/runtime.h"
	#include "extmod/machine_mem.h"
	#include "extmod/machine_signal.h"
	#include "extmod/machine_pulse.h"
	#include "extmod/machine_i2c.h"
	#include "modmachine.h"

	#include "xtirq.h"
	#include "os_type.h"
	#include "osapi.h"
	#include "etshal.h"
	#include "ets_alt_task.h"
	#include "user_interface.h"

	#if MICROPY_PY_MACHINE

	//#define MACHINE_WAKE_IDLE (0x01)
	//#define MACHINE_WAKE_SLEEP (0x02)
	#define MACHINE_WAKE_DEEPSLEEP (0x04)

	extern const mp_obj_type_t esp_wdt_type;

	STATIC mp_obj_t machine_freq(mp_uint_t n_args, const mp_obj_t *args) {
	if (n_args == 0) {
	// get
	return mp_obj_new_int(system_get_cpu_freq() * 1000000);
	} else {
	// set
	mp_int_t freq = mp_obj_get_int(args[0]) / 1000000;
	if (freq != 80 && freq != 160) {
	nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError,
	"frequency can only be either 80Mhz or 160MHz"));
	}
	system_update_cpu_freq(freq);
	return mp_const_none;
	}
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_freq_obj, 0, 1, machine_freq);

	STATIC mp_obj_t machine_reset(void) {
	system_restart();
	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);

	STATIC mp_obj_t machine_reset_cause(void) {
	return MP_OBJ_NEW_SMALL_INT(system_get_rst_info()->reason);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_cause_obj, machine_reset_cause);

	STATIC mp_obj_t machine_unique_id(void) {
	uint32_t id = system_get_chip_id();
	return mp_obj_new_bytes((byte*)&id, sizeof(id));
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_unique_id_obj, machine_unique_id);

	STATIC mp_obj_t machine_idle(void) {
	uint32_t t = mp_hal_ticks_cpu();
	asm("waiti 0");
	t = mp_hal_ticks_cpu() - t;
	return MP_OBJ_NEW_SMALL_INT(t);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_idle_obj, machine_idle);

	STATIC mp_obj_t machine_sleep(void) {
	printf("Warning: not yet implemented\n");
	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_sleep_obj, machine_sleep);

	STATIC mp_obj_t machine_deepsleep(void) {
	// default to sleep forever
	uint32_t sleep_us = 0;

	// see if RTC.ALARM0 should wake the device
	if (pyb_rtc_alarm0_wake & MACHINE_WAKE_DEEPSLEEP) {
	uint64_t t = pyb_rtc_get_us_since_2000();
	if (pyb_rtc_alarm0_expiry <= t) {
	sleep_us = 1; // alarm already expired so wake immediately
	} else {
	uint64_t delta = pyb_rtc_alarm0_expiry - t;
	if (delta <= 0xffffffff) {
	// sleep for the desired time
	sleep_us = delta;
	} else {
	// overflow, just set to maximum sleep time
	sleep_us = 0xffffffff;
	}
	}
	}

	// prepare for RTC reset at wake up
	rtc_prepare_deepsleep(sleep_us);
	// put the device in a deep-sleep state
	system_deep_sleep_set_option(0); // default power down mode; TODO check this
	system_deep_sleep(sleep_us);

	for (;;) {
	// we must not return
	ets_loop_iter();
	}

	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_deepsleep_obj, machine_deepsleep);

	typedef struct _esp_timer_obj_t {
	mp_obj_base_t base;
	os_timer_t timer;
	mp_obj_t callback;
	} esp_timer_obj_t;

	const mp_obj_type_t esp_timer_type;

	STATIC void esp_timer_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
	esp_timer_obj_t *self = self_in;
	mp_printf(print, "Timer(%p)", &self->timer);
	}

	STATIC mp_obj_t esp_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);
	esp_timer_obj_t *tim = m_new_obj(esp_timer_obj_t);
	tim->base.type = &esp_timer_type;
	return tim;
	}

	STATIC void esp_timer_cb(void *arg) {
	esp_timer_obj_t *self = arg;
	mp_sched_schedule(self->callback, self);
	}

	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) {
	static const mp_arg_t allowed_args[] = {
	// { MP_QSTR_freq, MP_ARG_KW_ONLY \| MP_ARG_OBJ, {.u_obj = mp_const_none} },
	{ 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} },
	};

	// parse args
	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);

	self->callback = args[2].u_obj;
	// Be sure to disarm timer before making any changes
	os_timer_disarm(&self->timer);
	os_timer_setfn(&self->timer, esp_timer_cb, self);
	os_timer_arm(&self->timer, args[0].u_int, args[1].u_int);

	return mp_const_none;
	}

	STATIC mp_obj_t esp_timer_init(mp_uint_t n_args, const mp_obj_t args, mp_map_t kw_args) {
	return esp_timer_init_helper(args[0], n_args - 1, args + 1, kw_args);
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_KW(esp_timer_init_obj, 1, esp_timer_init);

	STATIC mp_obj_t esp_timer_deinit(mp_obj_t self_in) {
	esp_timer_obj_t *self = self_in;
	os_timer_disarm(&self->timer);
	return mp_const_none;
	}
	STATIC MP_DEFINE_CONST_FUN_OBJ_1(esp_timer_deinit_obj, esp_timer_deinit);

	STATIC const mp_map_elem_t esp_timer_locals_dict_table[] = {
	{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&esp_timer_deinit_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&esp_timer_init_obj },
	// { MP_OBJ_NEW_QSTR(MP_QSTR_callback), (mp_obj_t)&esp_timer_callback_obj },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_ONE_SHOT), MP_OBJ_NEW_SMALL_INT(false) },
	{ MP_OBJ_NEW_QSTR(MP_QSTR_PERIODIC), MP_OBJ_NEW_SMALL_INT(true) },
	};
	STATIC MP_DEFINE_CONST_DICT(esp_timer_locals_dict, esp_timer_locals_dict_table);

	const mp_obj_type_t esp_timer_type = {
	{ &mp_type_type },
	.name = MP_QSTR_Timer,
	.print = esp_timer_print,
	.make_new = esp_timer_make_new,
	.locals_dict = (mp_obj_t)&esp_timer_locals_dict,
	};

	// this bit is unused in the Xtensa PS register
	#define ETS_LOOP_ITER_BIT (12)

	STATIC mp_obj_t machine_disable_irq(void) {
	uint32_t state = disable_irq();
	state = (state & ~(1 << ETS_LOOP_ITER_BIT)) \| (ets_loop_iter_disable << ETS_LOOP_ITER_BIT);
	ets_loop_iter_disable = 1;
	return mp_obj_new_int(state);
	}
	MP_DEFINE_CONST_FUN_OBJ_0(machine_disable_irq_obj, machine_disable_irq);

	STATIC mp_obj_t machine_enable_irq(mp_obj_t state_in) {
	uint32_t state = mp_obj_get_int(state_in);
	ets_loop_iter_disable = (state >> ETS_LOOP_ITER_BIT) & 1;
	enable_irq(state & ~(1 << ETS_LOOP_ITER_BIT));
	return mp_const_none;
	}
	MP_DEFINE_CONST_FUN_OBJ_1(machine_enable_irq_obj, machine_enable_irq);

	STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
	{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_umachine) },
	{ MP_ROM_QSTR(MP_QSTR_mem8), MP_ROM_PTR(&machine_mem8_obj) },
	{ MP_ROM_QSTR(MP_QSTR_mem16), MP_ROM_PTR(&machine_mem16_obj) },
	{ MP_ROM_QSTR(MP_QSTR_mem32), MP_ROM_PTR(&machine_mem32_obj) },

	{ MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
	{ MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&machine_reset_obj) },
	{ MP_ROM_QSTR(MP_QSTR_reset_cause), MP_ROM_PTR(&machine_reset_cause_obj) },
	{ MP_ROM_QSTR(MP_QSTR_unique_id), MP_ROM_PTR(&machine_unique_id_obj) },
	{ MP_ROM_QSTR(MP_QSTR_idle), MP_ROM_PTR(&machine_idle_obj) },
	{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&machine_sleep_obj) },
	{ MP_ROM_QSTR(MP_QSTR_deepsleep), MP_ROM_PTR(&machine_deepsleep_obj) },

	{ MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&machine_disable_irq_obj) },
	{ MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&machine_enable_irq_obj) },

	{ MP_ROM_QSTR(MP_QSTR_time_pulse_us), MP_ROM_PTR(&machine_time_pulse_us_obj) },

	{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&pyb_rtc_type) },
	{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&esp_timer_type) },
	{ MP_ROM_QSTR(MP_QSTR_WDT), MP_ROM_PTR(&esp_wdt_type) },
	{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&pyb_pin_type) },
	{ MP_ROM_QSTR(MP_QSTR_Signal), MP_ROM_PTR(&machine_signal_type) },
	{ MP_ROM_QSTR(MP_QSTR_PWM), MP_ROM_PTR(&pyb_pwm_type) },
	{ MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&pyb_adc_type) },
	{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&pyb_uart_type) },
	{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&machine_i2c_type) },
	{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&machine_hspi_type) },

	// wake abilities
	{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP), MP_ROM_INT(MACHINE_WAKE_DEEPSLEEP) },

	// reset causes
	{ MP_ROM_QSTR(MP_QSTR_PWRON_RESET), MP_ROM_INT(REASON_DEFAULT_RST) },
	{ MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(REASON_EXT_SYS_RST) },
	{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(REASON_DEEP_SLEEP_AWAKE) },
	{ MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(REASON_WDT_RST) },
	{ MP_ROM_QSTR(MP_QSTR_SOFT_RESET), MP_ROM_INT(REASON_SOFT_RESTART) },
	};

	STATIC MP_DEFINE_CONST_DICT(machine_module_globals, machine_module_globals_table);

	const mp_obj_module_t mp_module_machine = {
	.base = { &mp_type_module },
	.globals = (mp_obj_dict_t*)&machine_module_globals,
	};

	#endif // MICROPY_PY_MACHINE