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README.md 688B
README.md 688B
ATmega328 Interface Unit
This MCU acts as a serial to I2C translator for the host computer. The serial protocol implements two interfaces. One for read requests and another for write commands.
The data format of the write commands is given in the ATtiny85 I2C protocol document.
Read requests return blocks of memory begining with the address specified in the last ‘Set read address’ command.
Read: Channel to Host
Read a <count> bytes from a channel beginning at offset = ‘offset’
'r' <i2c-addr> <offset> <count>
Write: Host to Channel
Write <count> bytes from from the host to a channel
'w' <i2c-addr> <register> <count> <value-0> <value-1> ... <value-n>