rtc
This class includes support for using ESP32 RTC peripherals and memory
The content of the RTC memory is preserved during the deep sleep.
Up to 64 32-bit integers can be saved in RTC memory.
One string of up to 2048 characters can be saved in RTC memory.
The string can be, for example, json string containing the parameters which has to be restored after deep sleep wake-up.
Integers and string saved in RTC memory are protected by 16-bit CRC.
rtc = machine.RTC()
Set the system time and date.
date argument is the tuple containing the time and date information:
(year, month, day [,hour [,minute [, second ]]])
Return the current time as tuple:
(year, month, day, hour, minute, second)
server the NTP server domain name or IP, for example "pool.ntp.org"
update_period optional, time update interval in seconds; default: 0
tz optional, time zone string; default: the one set in menuconfig
Note: for update_period < 300, the time will be synced only once
rtc = machine.RTC()
rtc.ntp_sync(server="hr.pool.ntp.org", tz="CET-1CEST")
rtc.synced()
True
utime.gmtime()
(2018, 1, 29, 16, 3, 18, 2, 29)
utime.localtime()
(2018, 1, 29, 17, 3, 30, 2, 29)Return True if the system time was synced from NTP server, False if not.
Enable external interrupt #0 on gpio level.
pin a Pin object to be used for wake up
level is the pin state on which the interrupt will be activated 0 | 1
Valid pins are: 0, 2, 4, 12-15, 25-27, 32-39
To disable external interrupt #0, execute rtc.wake_on_ext0(None)
Enable external interrupt #1 on multiple pins.
pins tuple of Pin objects to be used as wakeup source: (Pin(x), Pin(y), ..., Pin(z))
level is the pin state on which the interrupt wil be activated 0 | 1
Valid pins are: 0, 2, 4, 12-15, 25-27, 32-39
If level is set to 0, all pins must be at low level to wake up.
If level is set to 1, any pin at high level will wake up.
To disable external interrupt #1, execute rtc.wake_on_ext1(None)
Write integer (32-bit) value to the position pos in RTC memory.
Return True on success, False if failed.
Read integer (32-bit) from the position pos in RTC memory.
Returns None if no value has not been written to the RTC integer memory yet or the RTC memory was corrupted (bad CRC), otherwise returns the integer written to the position or 0 (default value).
Write the string text to RTC memory.
Return True on success, False if failed.
Read the string from RTC memory.
Returns None if no string has been written to the RTC string memory yet or the RTC memory was corrupted (bad CRC), otherwise returns the string written.
