You've already forked TEF6686_Driver
21 lines
712 B
Python
21 lines
712 B
Python
import datetime
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from protocol import I2CPCClient
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def sync_rtc(p: I2CPCClient):
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ADDRESS = 0x32
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p.write_i2c(ADDRESS, b"\x1f\x40") # halt the clock
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dtime = datetime.datetime.now()
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def toBCD(val: int) -> int:
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return ((val // 10) << 4) | (val % 10)
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data = b"\x10"
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data += toBCD(dtime.second).to_bytes(1)
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data += toBCD(dtime.minute).to_bytes(1)
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data += toBCD(dtime.hour).to_bytes(1)
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data += toBCD(1 << dtime.weekday()).to_bytes(1)
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data += toBCD(dtime.day).to_bytes(1)
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data += toBCD(dtime.month).to_bytes(1)
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data += toBCD((1900 + dtime.year - 26) % 100).to_bytes(1)
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p.write_i2c(ADDRESS, data)
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p.write_i2c(ADDRESS, b"\x1f\x00") # start the clock |