text: /****************************************************************************
   * arch/arm/src/sama5/sam_serial.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_SAMA5_SAM_SERIAL_H
  #define __ARCH_ARM_SRC_SAMA5_SAM_SERIAL_H
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  
  #include "arm_internal.h"
  #include "sam_config.h"
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /****************************************************************************
   * Public Types
   ****************************************************************************/
  
  /****************************************************************************
   * Inline Functions
   ****************************************************************************/
  
  #ifndef __ASSEMBLY__
  
  /****************************************************************************
   * Public Data
   ****************************************************************************/
  
  #undef EXTERN
  #if defined(__cplusplus)
  #define EXTERN extern "C"
  extern "C"
  {
  #else
  #define EXTERN extern
  #endif
  
  /****************************************************************************
   * Public Function Prototypes
   ****************************************************************************/
  
  /****************************************************************************
   * Name: sam_earlyserialinit
   *
   * Description:
   *   Performs the low level USART initialization early in debug so that the
   *   serial console will be available during bootup.  This must be called
   *   before arm_serialinit.
   *
   ****************************************************************************/
  
  #ifdef USE_EARLYSERIALINIT
  void sam_earlyserialinit(void);
  #endif
  
  /****************************************************************************
   * Name: uart_earlyserialinit
   *
   * Description:
   *   Performs the low level USART initialization early in debug so that the
   *   serial console will be available during bootup.  This must be called
   *   before arm_serialinit.
   *
   ****************************************************************************/
  
  #if defined(USE_EARLYSERIALINIT) && (defined(SAMA5_HAVE_UART) || defined(SAMA5_HAVE_USART))
  void uart_earlyserialinit(void);
  #endif
  
  /****************************************************************************
   * Name: flexus_earlyserialinit
   *
   * Description:
   *   Performs the low level Flexcom USART initialization early so that the
   *   Flexcom serial console will be available during bootup.  This must be
   *   called before flexus_serialinit.
   *
   ****************************************************************************/
  
  #if defined(USE_EARLYSERIALINIT) && defined(SAMA5_HAVE_FLEXCOM_USART)
  void flexus_earlyserialinit(void);
  #endif
  
  /****************************************************************************
   * Name: uart_serialinit
   *
   * Description:
   *   Register UART/USART serial console and serial ports.  This assumes that
   *   uart_earlyserialinit was called previously.
   *
   ****************************************************************************/
  
  #if defined(USE_SERIALDRIVER) && (defined(SAMA5_HAVE_UART) || defined(SAMA5_HAVE_USART))
  void uart_serialinit(void);
  #endif
  
  /****************************************************************************
   * Name: flexus_serialinit
   *
   * Description:
   *   Register Flexcom serial console and serial ports.  This assumes that
   *   flexus_earlyserialinit was called previously.
   *
   ****************************************************************************/
  
  #if defined(USE_SERIALDRIVER) && defined(SAMA5_HAVE_FLEXCOM_USART)
  void flexus_serialinit(void);
  #endif
  
  #undef EXTERN
  #if defined(__cplusplus)
  }
  #endif
  
  #endif /* __ASSEMBLY__ */
  #endif /* __ARCH_ARM_SRC_SAMA5_SAM_SERIAL_H */
  