diolan_usb_cmd_data
ret = diolan_usb_cmd_data(dev, CMD_I2C_GET_BYTE_ACK, ack, true);
return diolan_usb_cmd_data(dev, CMD_I2C_PUT_BYTE_ACK, byte, false);
return diolan_usb_cmd_data(dev, CMD_I2C_SET_SPEED, speed, true);
return diolan_usb_cmd_data(dev, CMD_I2C_SET_CLK_SYNC, enable, true);