kopia lustrzana https://github.com/peterhinch/micropython-samples
45 wiersze
1.3 KiB
Python
45 wiersze
1.3 KiB
Python
# ds3231_port_test
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# Test/demo of portable driver for DS3231 precision RTC chip
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# Author: Peter Hinch
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# Copyright Peter Hinch 2018 Released under the MIT license
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from machine import Pin, I2C
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import utime
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import sys
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import uos
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from ds3231_port import DS3231
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# If powering the DS3231 from a Pyboard D 3V3 output:
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if uos.uname().machine.split(' ')[0][:4] == 'PYBD':
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Pin.board.EN_3V3.value(1)
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# A Pyboard test
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#from pyb import RTC
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#rtc = RTC()
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#rtc.datetime((2018, 1, 1, 1, 12, 0, 0, 0)) # Force incorrect setting
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# mode and pull are specified in case pullups are absent.
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# The pin ID's are arbitrary.
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if sys.platform == 'pyboard':
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scl_pin = Pin('X2', pull=Pin.PULL_UP, mode=Pin.OPEN_DRAIN)
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sda_pin = Pin('X1', pull=Pin.PULL_UP, mode=Pin.OPEN_DRAIN)
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else: # I tested on ESP32
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scl_pin = Pin(19, pull=Pin.PULL_UP, mode=Pin.OPEN_DRAIN)
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sda_pin = Pin(18, pull=Pin.PULL_UP, mode=Pin.OPEN_DRAIN)
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i2c = I2C(-1, scl=scl_pin, sda=sda_pin)
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ds3231 = DS3231(i2c)
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print('Initial values')
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print('DS3231 time:', ds3231.get_time())
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print('RTC time: ', utime.localtime())
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print('Setting DS3231 from RTC')
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ds3231.save_time() # Set DS3231 from RTC
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print('DS3231 time:', ds3231.get_time())
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print('RTC time: ', utime.localtime())
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print('Running RTC test for 2 mins')
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print('RTC leads DS3231 by', ds3231.rtc_test(120, True), 'ppm')
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