\ 2006-06-28 EW adv_02.fs \ \ i2c Bus am R8C \ P1.0 -- SCL \ P1.1 -- SDA \ am Bus: \ PCF8574 (8bit IO), 7-bit Adresse: $20 rom include SMBus.fs $40 Constant i2c_addr_portexpander \ vom portexpander lesen : i2c 1 i2c_addr_portexpander NB