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21 results

utime.c

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  • Forked from card10 / firmware
    Source project has a limited visibility.
    utime.c 4.65 KiB
    #include "interrupt.h"
    #include "epicardium.h"
    
    #include "mxc_delay.h"
    
    #include "py/mpconfig.h"
    #include "py/obj.h"
    #include "py/runtime.h"
    #include "extmod/utime_mphal.h"
    
    #include <stdint.h>
    
    // Needs to be after the stdint include ...
    #include "lib/timeutils/timeutils.h"
    
    /* MicroPython has its epoch at 2000-01-01. Our RTC is in UTC */
    #define EPOCH_OFFSET 946684800UL
    #define TZONE_OFFSET 7200UL
    
    static mp_obj_t time_set_time(mp_obj_t secs)
    {
    	uint64_t timestamp = mp_obj_get_int(secs) * 1000ULL +
    			     EPOCH_OFFSET * 1000ULL - TZONE_OFFSET * 1000ULL;
    	epic_rtc_set_milliseconds(timestamp);
    	return mp_const_none;
    }
    static MP_DEFINE_CONST_FUN_OBJ_1(time_set_time_obj, time_set_time);
    
    static mp_obj_t time_set_unix_time(mp_obj_t secs)
    {
    	uint64_t timestamp = mp_obj_get_int(secs) * 1000ULL;
    	epic_rtc_set_milliseconds(timestamp);
    	return mp_const_none;
    }
    static MP_DEFINE_CONST_FUN_OBJ_1(time_set_unix_time_obj, time_set_unix_time);
    
    static mp_obj_t time_time(void)
    {
    	mp_int_t seconds;
    	seconds = epic_rtc_get_seconds() - EPOCH_OFFSET + TZONE_OFFSET;
    	return mp_obj_new_int(seconds);
    }
    MP_DEFINE_CONST_FUN_OBJ_0(time_time_obj, time_time);
    
    static mp_obj_t time_localtime(size_t n_args, const mp_obj_t *args)
    {
    	mp_int_t seconds;
    
    	if (n_args == 0 || args[0] == mp_const_none) {
    		seconds = epic_rtc_get_seconds() - EPOCH_OFFSET + TZONE_OFFSET;
    	} else {
    		seconds = mp_obj_get_int(args[0]);
    	}
    
    	timeutils_struct_time_t tm;
    	timeutils_seconds_since_2000_to_struct_time(seconds, &tm);
    	mp_obj_t tuple[8] = {
    		tuple[0] = mp_obj_new_int(tm.tm_year),
    		tuple[1] = mp_obj_new_int(tm.tm_mon),
    		tuple[2] = mp_obj_new_int(tm.tm_mday),
    		tuple[3] = mp_obj_new_int(tm.tm_hour),
    		tuple[4] = mp_obj_new_int(tm.tm_min),
    		tuple[5] = mp_obj_new_int(tm.tm_sec),
    		tuple[6] = mp_obj_new_int(tm.tm_wday),
    		tuple[7] = mp_obj_new_int(tm.tm_yday),
    	};
    	return mp_obj_new_tuple(8, tuple);
    }
    static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(
    	time_localtime_obj, 0, 1, time_localtime
    );
    
    static mp_obj_t time_mktime(mp_obj_t tuple)
    {
    	size_t len;
    	mp_obj_t *elem;
    	mp_obj_get_array(tuple, &len, &elem);
    
    	/* localtime generates a tuple of len 8. CPython uses 9, so we accept both. */
    	if (len < 8 || len > 9) {
    		nlr_raise(mp_obj_new_exception_msg_varg(
    			&mp_type_TypeError,
    			"mktime needs a tuple of length 8 or 9 (%d given)",
    			len)
    		);
    	}
    
    	return mp_obj_new_int_from_uint(timeutils_mktime(
    		mp_obj_get_int(elem[0]),
    		mp_obj_get_int(elem[1]),
    		mp_obj_get_int(elem[2]),
    		mp_obj_get_int(elem[3]),
    		mp_obj_get_int(elem[4]),
    		mp_obj_get_int(elem[5]))
    	);
    }
    static MP_DEFINE_CONST_FUN_OBJ_1(time_mktime_obj, time_mktime);
    
    /* Schedule an alarm */
    static mp_obj_t time_alarm(size_t n_args, const mp_obj_t *args)
    {
    	mp_int_t timestamp =
    		mp_obj_get_int(args[0]) + EPOCH_OFFSET - TZONE_OFFSET;
    	if (n_args == 2) {
    		/* If a callback was given, register it for the RTC Alarm */
    		mp_obj_t callback = args[1];
    		mp_obj_t irq_id   = MP_OBJ_NEW_SMALL_INT(EPIC_INT_RTC_ALARM);
    		mp_interrupt_set_callback(irq_id, callback);
    		mp_interrupt_enable_callback(irq_id);
    	}
    
    	int res = epic_rtc_schedule_alarm(timestamp);
    	if (res < 0) {
    		mp_raise_OSError(-res);
    	}
    	return mp_const_none;
    }
    static MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(time_alarm_obj, 1, 2, time_alarm);
    
    static const mp_rom_map_elem_t time_module_globals_table[] = {
    	{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_utime) },
    	{ MP_ROM_QSTR(MP_QSTR_time), MP_ROM_PTR(&time_time_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_set_time), MP_ROM_PTR(&time_set_time_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_set_unix_time),
    	  MP_ROM_PTR(&time_set_unix_time_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_localtime), MP_ROM_PTR(&time_localtime_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_mktime), MP_ROM_PTR(&time_mktime_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_sleep), MP_ROM_PTR(&mp_utime_sleep_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_sleep_ms), MP_ROM_PTR(&mp_utime_sleep_ms_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_sleep_us), MP_ROM_PTR(&mp_utime_sleep_us_obj) },
    	{ MP_ROM_QSTR(MP_QSTR_alarm), MP_ROM_PTR(&time_alarm_obj) },
    #if 0
    	/* TODO: Implement those */
    	{MP_ROM_QSTR(MP_QSTR_ticks_ms), MP_ROM_PTR(&mp_utime_ticks_ms_obj)},
    	{MP_ROM_QSTR(MP_QSTR_ticks_us), MP_ROM_PTR(&mp_utime_ticks_us_obj)},
    	{MP_ROM_QSTR(MP_QSTR_ticks_cpu), MP_ROM_PTR(&mp_utime_ticks_cpu_obj)},
    	{MP_ROM_QSTR(MP_QSTR_ticks_add), MP_ROM_PTR(&mp_utime_ticks_add_obj)},
    	{MP_ROM_QSTR(MP_QSTR_ticks_diff), MP_ROM_PTR(&mp_utime_ticks_diff_obj)},
    #endif
    };
    static MP_DEFINE_CONST_DICT(time_module_globals, time_module_globals_table);
    
    const mp_obj_module_t mp_module_utime = {
    	.base    = { &mp_type_module },
    	.globals = (mp_obj_dict_t *)&time_module_globals,
    };
    
    /* Register the module to make it available in Python */
    /* clang-format off */
    MP_REGISTER_MODULE(MP_QSTR_utime, mp_module_utime, MODULE_UTIME_ENABLED);