code: def process_call(self, i2c_addr, register, value, force=None):
          
          self._set_address(i2c_addr, force=force)
          msg = i2c_smbus_ioctl_data.create(
              read_write=I2C_SMBUS_WRITE, command=register, size=I2C_SMBUS_PROC_CALL
          )
          msg.data.contents.word = value
          ioctl(self.fd, I2C_SMBUS, msg)
          return msg.data.contents.word
docs: Executes a SMBus Process Call, sending a 16-bit value and receiving a 16-bit response
  
          :param i2c_addr: i2c address
          :type i2c_addr: int
          :param register: Register to read/write to
          :type register: int
          :param value: Word value to transmit
          :type value: int
          :param force:
          :type force: Boolean
          :rtype: int