70 lines
2.0 KiB
Python
70 lines
2.0 KiB
Python
"""Utility functions for the driver."""
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import socket
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import struct
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import time
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def get_public_ip_address():
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"""Find the public IP Address of the host device."""
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.connect(("8.8.8.8", 80))
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ip_address = sock.getsockname()[0]
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sock.close()
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return ip_address
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def int_to_float16(int_to_convert):
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"""Convert integer into float16 representation."""
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bin_rep = ('0' * 16 + '{0:b}'.format(int_to_convert))[-16:]
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sign = 1.0
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if int(bin_rep[0]) == 1:
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sign = -1.0
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exponent = float(int(bin_rep[1:6], 2))
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fraction = float(int(bin_rep[6:17], 2))
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if exponent == float(0b00000):
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return sign * 2 ** -14 * fraction / (2.0 ** 10.0)
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elif exponent == float(0b11111):
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if fraction == 0:
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return sign * float("inf")
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return float("NaN")
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frac_part = 1.0 + fraction / (2.0 ** 10.0)
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return sign * (2 ** (exponent - 15)) * frac_part
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def ints_to_float(int1, int2):
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"""Convert 2 registers into a floating point number."""
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mypack = struct.pack('>HH', int1, int2)
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f_unpacked = struct.unpack('>f', mypack)
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print("[{}, {}] >> {}".format(int1, int2, f_unpacked[0]))
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return f_unpacked[0]
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def degf_to_degc(temp_f):
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"""Convert deg F to deg C."""
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return (temp_f - 32.0) * (5.0/9.0)
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def degc_to_degf(temp_c):
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"""Convert deg C to deg F."""
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return temp_c * 1.8 + 32.0
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class Every(object):
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"""Class that runs a specific method every so often."""
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def __init__(self, func, seconds, run_at_start=True):
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self.func = func
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self.seconds = seconds
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self.last_run = time.time()
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if run_at_start:
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self.check(force=True)
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def check(self, force=False):
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"""Check to see if the function needs to be run."""
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now = time.time()
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if ((now - self.last_run) > self.seconds) or force:
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self.last_run = now
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return self.func()
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return None
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