# a) Data sampling of receiver: SCL = rising, and/or
# b) START condition (S): SCL = high, SDA = falling, and/or
# c) STOP condition (P): SCL = high, SDA = rising
# a) Data sampling of receiver: SCL = rising, and/or
# b) START condition (S): SCL = high, SDA = falling, and/or
# c) STOP condition (P): SCL = high, SDA = rising