text: /****************************************************************************
   * arch/arm/src/lpc43xx/lpc43_i2c.h
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  #ifndef __ARCH_ARM_SRC_LPC43XX_LPC43_I2C_H
  #define __ARCH_ARM_SRC_LPC43XX_LPC43_I2C_H
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  #include <nuttx/i2c/i2c_master.h>
  #include "hardware/lpc43_i2c.h"
  
  /****************************************************************************
   * Public Function Prototypes
   ****************************************************************************/
  
  /****************************************************************************
   * Name: lpc43_i2cbus_initialize
   *
   * Description:
   *   Initialize the selected I2C port. And return a unique instance of struct
   *   struct i2c_master_s.  This function may be called to obtain multiple
   *   instances of the interface, each of which may be set up with a
   *   different frequency and slave address.
   *
   * Input Parameters:
   *   Port number (for hardware that has multiple I2C interfaces)
   *
   * Returned Value:
   *   Valid I2C device structure reference on success; a NULL on failure
   *
   ****************************************************************************/
  
  struct i2c_master_s *lpc43_i2cbus_initialize(int port);
  
  /****************************************************************************
   * Name: lpc43_i2cbus_uninitialize
   *
   * Description:
   *   De-initialize the selected I2C port, and power down the device.
   *
   * Input Parameters:
   *   Device structure as returned by the lpc43_i2cbus_initialize()
   *
   * Returned Value:
   *   OK on success, ERROR when internal reference count mismatch or dev
   *   points to invalid hardware device.
   *
   ****************************************************************************/
  
  int lpc43_i2cbus_uninitialize(struct i2c_master_s *dev);
  
  #endif /* __ARCH_ARM_SRC_LPC43XX_LPC43_I2C_H */
  