id=0
sda=1
scl=2
ARDUINO_I2C = 0x15
tmp=0
i2c.setup(id,sda,scl,i2c.SLOW)

print("I2C demo")
while 1 do
       i2c.start(id)
       i2c.address(id, 0x15,i2c.TRANSMITTER)
        i2c.write(id,tmp)
         i2c.stop(id)
        print("write",tmp)
        tmr.delay(1000000)
                if tmp ==34 then
        tmp=0
        else
         tmp=tmp+1
        end
       

end