docs: def write_byte_data(self, address, register, value):
          """
          SMBus Read Byte:  i2c_smbus_read_byte_data()
          ============================================
  
          This reads a single byte from a device, from a designated register.
          The register is specified through the Comm byte.
  
          S Addr Wr [A] Comm [A] S Addr Rd [A] [Data] NA P
  
          Functionality flag: I2C_FUNC_SMBUS_READ_BYTE_DATA
          """
          return self.smbus.write_byte_data(address, register, value)