text: /*----------------------------------------------------------------------------
   * Copyright (c) <2016-2018>, <Huawei Technologies Co., Ltd>
   * All rights reserved.
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   * 1. Redistributions of source code must retain the above copyright notice, this list of
   * conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice, this list
   * of conditions and the following disclaimer in the documentation and/or other materials
   * provided with the distribution.
   * 3. Neither the name of the copyright holder nor the names of its contributors may be used
   * to endorse or promote products derived from this software without specific prior written
   * permission.
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
   * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *---------------------------------------------------------------------------*/
  /*----------------------------------------------------------------------------
   * Notice of Export Control Law
   * ===============================================
   * Huawei LiteOS may be subject to applicable export control laws and regulations, which might
   * include those applicable to Huawei LiteOS of U.S. and the country in which you are located.
   * Import, export and usage of Huawei LiteOS in any manner by you shall be in compliance with such
   * applicable export control laws and regulations.
   *---------------------------------------------------------------------------*/
  #include "osport.h"
  
  
  typedef struct
  {
      u32_t  debugrxmode: 2;  //1means ascii 2 hex while others means no debug
      u32_t  debugtxmode: 2;  //1means ascii 2 hex while others means no debug
  } tagIOCB;
  
  static tagIOCB  gIOCB;
  //import the uart here
  extern s32_t uart_read(u8_t *buf, s32_t len, s32_t timeout);
  extern s32_t uart_write(u8_t *buf, s32_t len, s32_t timeout);
  
  
  #pragma weak uart_read
  s32_t uart_read(u8_t *buf, s32_t len, s32_t timeout)
  {
      return 0;
  }
  #pragma weak uart_write
  s32_t uart_write(u8_t *buf, s32_t len, s32_t timeout)
  {
      return 0;
  }
  
  
  //we do some port here:we port the uart
  s32_t iodev_open(const char *name, s32_t flags, s32_t mode)
  {
      s32_t fd = 1;
      return fd;
  }
  
  s32_t iodev_read(s32_t fd, u8_t *buf, s32_t len, s32_t timeout)
  {
      s32_t i = 0;
      s32_t ret;
      ret = uart_read(buf, len, timeout);
      if(ret > 0)
      {
          printf("RCV:%02x Bytes:", ret);
          for(i = 0; i < ret; i++)
          {
              if(gIOCB.debugrxmode == 1)
              {
                  printf("%c", buf[i]);
              }
              else if(gIOCB.debugrxmode  == 2)
              {
                  printf(" %02x", buf[i]);
              }
              else
              {
  
              }
          }
          printf("\n\r");
      }
      return ret;
  }
  s32_t iodev_write(s32_t fd, u8_t *buf, s32_t len, s32_t timeout)
  {
      s32_t ret;
      s32_t i;
      printf("SND:%02x Bytes:", len);
      for(i = 0; i < len; i++)
      {
          if(gIOCB.debugtxmode == 1)
          {
              printf("%c", buf[i]);
          }
          else if(gIOCB.debugtxmode == 2)
          {
              printf(" %02x", buf[i]);
          }
          else
          {
  
          }
      }
      printf("\n\r");
      ret = uart_write(buf, len, timeout);
      return ret;
  }
  s32_t iodev_close(s32_t fd)
  {
      return 0;
  }
  s32_t iodev_flush(s32_t fd)
  {
      unsigned char buf;
      s32_t ret;
      do
      {
          ret = iodev_read(fd, &buf, 1, 0);
      }
      while(ret > 0);
      return 0;
  }
  void  iodev_debugmode(s32_t rxtx, u32_t mode)
  {
      if(rxtx == 0)
      {
          gIOCB.debugrxmode = mode;
      }
      else if(rxtx == 1)
      {
          gIOCB.debugtxmode = mode;
      }
      else if(rxtx == 2)
      {
          gIOCB.debugrxmode = mode;
          gIOCB.debugtxmode = mode;
      }
      else  //do nothing here
      {
      }
      return;
  }
  
  