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67 lines
1.9 KiB
67 lines
1.9 KiB
7 years ago
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#!/bin/env python3
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import time
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import gex
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with gex.Client(gex.TrxRawUSB()) as client:
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ow = gex.OneWire(client, 'ow')
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# print("Presence: ", ow.test_presence())
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print("Devices:", ow.search())
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def meas(addr):
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ow.write([0x44], addr=addr)
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ow.wait_ready()
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data = ow.query([0xBE], 9, addr=addr)
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pp = gex.PayloadParser(data)
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return pp.i16() * 0.0625
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while True:
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a = meas(6558392391241695016)
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b = meas(1802309978572980008)
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print("in: %.2f °C, out: %f °C" % (a, b))
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# # search the bus for alarm
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# if False:
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# ow = gex.OneWire(client, 'ow')
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# print("Presence: ", ow.test_presence())
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# print("Devices w alarm:", ow.search(alarm=True))
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#
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# # simple 1w check
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# if False:
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# ow = gex.OneWire(client, 'ow')
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# print("Presence: ", ow.test_presence())
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# print("ROM: 0x%016x" % ow.read_address())
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# print("Scratch:", ow.query([0xBE], rcount=9, addr=0x7100080104c77610, as_array=True))
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#
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# # testing ds1820 temp meas without polling
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# if False:
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# ow = gex.OneWire(client, 'ow')
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# print("Presence: ", ow.test_presence())
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# print("Starting measure...")
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# ow.write([0x44])
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# time.sleep(1)
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# print("Scratch:", ow.query([0xBE], 9))
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#
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# # testing ds1820 temp meas with polling
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# if False:
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# ow = gex.OneWire(client, 'ow')
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# print("Presence: ", ow.test_presence())
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# print("Starting measure...")
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# ow.write([0x44])
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# ow.wait_ready()
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# data = ow.query([0xBE], 9)
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#
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# pp = gex.PayloadParser(data)
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#
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# temp = pp.i16()/2.0
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# th = pp.i8()
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# tl = pp.i8()
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# reserved = pp.i16()
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# remain = float(pp.u8())
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# perc = float(pp.u8())
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#
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# realtemp = temp - 0.25+(perc-remain)/perc
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# print("Temperature = %f °C (th %d, tl %d)" % (realtemp, th, tl))
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