Posted to tcl by rmax at Wed Oct 06 07:58:51 GMT 2021view pretty
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# --- Ei650i Smoke detector ---
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# 11111111 preamble
# 10101010 start of frame
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# 01011110 00010100 hours of operation ( (24090 - value) * 4 )
# 00000010 device type (1 = Ei650, 2 = Ei650i)
# 00000000 6..7: unknown
# 0..5: sensor contamination (0..10 in steps of 1/32)
# 00001111 7: unknown
# 6: sensor status (0 = OK, 1 = failure)
# 5: unknown
# 4: contamination status (0 = valid, 1 = invalid)
# 0..3: battery voltage(2.35 V .. 3,04 V)
# 01011110 00011000 00000001 time + # of test button presses
# 01011110 00011000 00000010 time + # of warning events
# 01011110 00011000 00000100 time + # of battery empty events
# 01011110 00011000 00001000 time + # of device removals (value - 1)
# 01001111 00100100 CRC-CCITT over the payload data
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# 10101010 end of frame
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# --- Ei208 CO detector ---
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# 11111111 preamble
# 10101010 start of frame
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# 00111101 00011110 hours of operation ((24090 - value) * 4)
# 00000000 device type (0 = Ei208)
# 00000000 highest CO concentration ever seen
# (high nibble * 100 + low nibble * 10)
# 00001111 7: unknown
# 6: sensor status (0 = OK, 1 = failure)
# 4..5: unknown
# 0..3: battery voltage(2.35 V .. 3,04 V)
# 00111101 00011110 00001011 time + # of test button presses
# 00111101 00011110 00000001 time + # of CO > 45ppm
# 00111101 00011110 00000011 time + # of CO > 90ppm
# 00111101 00011110 00000100 time + # of CO > 150ppm
# 00111101 00011110 00001000 time + # of CO > 30ppm
# 00111101 00011110 00010000 unknown
# 00111101 00011110 00100000 time + # of battery empty events
# 01011110 00011001 00000111 time + # of device removals (value - 1)
# 10101101 01110011 CRC-CCITT over the payload data
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# 10101010 end of frame
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