-- Scanner for I2C devices
-- http://www.esp8266.com/viewtopic.php?f=19&t=771

print("\n i2c_scanner.lua zf191216.2117 \n")

id=0   sda=5   scl=6

print("start...")
i2c.setup(id,sda,scl,i2c.SLOW)

for i=0,127 do
    i2c.start(id)
    resCode = i2c.address(id, i, i2c.TRANSMITTER)
    i2c.stop(id)
    if resCode == true then print("We have a device on address 0x" .. string.format("%02x", i) .. " (" .. i ..")") end
end
print("stop...")