rtc.py 2.15 KB
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import pyb, stm
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from pyb import RTC
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rtc = RTC()
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rtc.init()
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print(rtc)
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# make sure that 1 second passes correctly
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rtc.datetime((2014, 1, 1, 1, 0, 0, 0, 0))
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pyb.delay(1002)
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print(rtc.datetime()[:7])
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def set_and_print(datetime):
    rtc.datetime(datetime)
    print(rtc.datetime()[:7])

# make sure that setting works correctly
set_and_print((2000, 1, 1, 1, 0, 0, 0, 0))
set_and_print((2000, 1, 31, 1, 0, 0, 0, 0))
set_and_print((2000, 12, 31, 1, 0, 0, 0, 0))
set_and_print((2016, 12, 31, 1, 0, 0, 0, 0))
set_and_print((2016, 12, 31, 7, 0, 0, 0, 0))
set_and_print((2016, 12, 31, 7, 1, 0, 0, 0))
set_and_print((2016, 12, 31, 7, 12, 0, 0, 0))
set_and_print((2016, 12, 31, 7, 13, 0, 0, 0))
set_and_print((2016, 12, 31, 7, 23, 0, 0, 0))
set_and_print((2016, 12, 31, 7, 23, 1, 0, 0))
set_and_print((2016, 12, 31, 7, 23, 59, 0, 0))
set_and_print((2016, 12, 31, 7, 23, 59, 1, 0))
set_and_print((2016, 12, 31, 7, 23, 59, 59, 0))
set_and_print((2099, 12, 31, 7, 23, 59, 59, 0))
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# check that calibration works correctly
# save existing calibration value:
cal_tmp = rtc.calibration()

def set_and_print_calib(cal):
    rtc.calibration(cal)
    print(rtc.calibration())

set_and_print_calib(512)
set_and_print_calib(511)
set_and_print_calib(345)
set_and_print_calib(1)
set_and_print_calib(0)
set_and_print_calib(-1)
set_and_print_calib(-123)
set_and_print_calib(-510)
set_and_print_calib(-511)

# restore existing calibration value
rtc.calibration(cal_tmp)
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# Check register settings for wakeup
def set_and_print_wakeup(ms):
    try:
        rtc.wakeup(ms)
        wucksel = stm.mem32[stm.RTC + stm.RTC_CR] & 7
        wut = stm.mem32[stm.RTC + stm.RTC_WUTR] & 0xffff
    except ValueError:
        wucksel = -1
        wut = -1
    print((wucksel, wut))

set_and_print_wakeup(0)
set_and_print_wakeup(1)
set_and_print_wakeup(4000)
set_and_print_wakeup(4001)
set_and_print_wakeup(8000)
set_and_print_wakeup(8001)
set_and_print_wakeup(16000)
set_and_print_wakeup(16001)
set_and_print_wakeup(32000)
set_and_print_wakeup(32001)
set_and_print_wakeup(0x10000*1000)
set_and_print_wakeup(0x10001*1000)
set_and_print_wakeup(0x1ffff*1000)
set_and_print_wakeup(0x20000*1000)
set_and_print_wakeup(0x20001*1000) # exception