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Peter Gerwinski
es
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8ab59001
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8ab59001
authored
Nov 9, 2022
by
Peter Gerwinski
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Weitere Notizen und bearbeiteter Screenshot 9.11.2022
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@@ -10,3 +10,22 @@ streaming/usr/local/lib/pult# echo "vnc max" | nc localhost 6076
streaming/usr/local/lib/pult# echo "janus-1 max" | nc localhost 6076
streaming/usr/local/lib/pult# echo "janus-1 min" | nc localhost 6076
streaming/usr/local/lib/pult#
-----------------------------------------------------------------------
I²C
https://de.wikipedia.org/wiki/I%C2%B2C#Elektrische_Definition
I²C benötigt zwei Signalleitungen: Takt- (SCL = Serial Clock)
und Datenleitung (SDA = Serial Data). Beide liegen mit den
Pull-up-Widerständen R_P an der Versorgungsspannung V_DD.
https://de.wikipedia.org/wiki/I%C2%B2C#Takt_und_Zust%C3%A4nde_des_Busses
Eine Dateneinheit besteht aus 8 Datenbits = 1 Oktett (welche protokollbedingt
entweder als Wert oder als Adresse interpretiert werden) und einem ACK-Bit.
Dieses Bestätigungsbit (Acknowledge) wird vom Slave durch einen Low-Pegel auf
der Datenleitung während der neunten Takt-High-Phase (welche nach wie vor vom
Master generiert wird) und als NACK (für engl. not acknowledge) durch einen
High-Pegel signalisiert.
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