code: def SPI_config(self,config):
          'Configure SPI interface parameters.'
          self.bus.write_byte_data(self.address, 0xF0, config)
          return self.bus.read_byte_data(self.address, 0xF0f SPI_config(self,config):
          'Configure SPI interface parameters.'
          self.bus.write_byte_data(self.address, 0xF0, config)
          return self.bus.read_byte_data(self.address, 0xF0)
docs: Configure SPI interface parameters.