ARM, RISC-V контроллеры

#ifndef __COMPORTDESCRIPTOR_H
#define __COMPORTDESCRIPTOR_H
#include "main.h"
#include <stdio.h>
#if _DLIB_FILE_DESCRIPTOR
//The three standard file pointers provided by the run time library.
#define	STDIN_FILENO	0
#define	STDOUT_FILENO	1
#define	STDERR_FILENO	2
FILE* InitCOM0(unsigned long Speed); 
FILE* InitCOM1(unsigned long Speed); 
FILE* InitCOM2(unsigned long Speed); 
int fputc(int ch, FILE *f);
#endif /* _DLIB_FILE_DESCRIPTOR */
#ifdef __COMPORTDESCRIPTOR_C
#define COM_PORT0 (0)
#define COM_PORT1 (1)
#define COM_PORT2 (2)
#define COM_PORT_NONE  (-1)
#define STDOUT_COM_PORT COM_PORT_NONE //COM порт для stdout  
#else
#endif
#endif

#define __COMPORTDESCRIPTOR_C
#include "ComPortDescriptor.h"
#if _DLIB_FILE_DESCRIPTOR
static FILE COM0;
static FILE COM1;
static FILE COM2;
static const unsigned char  TextCom0[]="COM0";
static const unsigned char  TextCom1[]="COM1";
static const unsigned char  TextCom2[]="COM2";
#define COM0_FILENO (3) //дескриптор 
#define COM1_FILENO (4) //дескриптор 
#define COM2_FILENO (5) //дескриптор 
FILE* InitCOM0(unsigned long Speed)
  {
  FifoInit0(Speed);//Инициализация UART FIFO 
  COM0._Mode=(stdin->_Mode)|(stdout->_Mode);
  COM0._Lockno=COM0_FILENO;
  COM0._Handle=COM0_FILENO;
  COM0._Tmpnam=(char*)TextCom0;
  return &COM0;
  }
FILE* InitCOM1(unsigned long Speed)
  {
  FifoInit1(Speed);//Инициализация UART FIFO 
  COM1._Mode=(stdin->_Mode)|(stdout->_Mode);
  COM1._Lockno=COM1_FILENO;
  COM1._Handle=COM1_FILENO;
  COM1._Tmpnam=(char*)TextCom1;
  return &COM1;
  }
 
FILE* InitCOM2(unsigned long Speed)
  {
  FifoInit2(Speed);//Инициализация UART FIFO 
  COM2._Mode=(stdin->_Mode)|(stdout->_Mode);
  COM2._Lockno=COM2_FILENO;
  COM2._Handle=COM2_FILENO;
  COM2._Tmpnam=(char*)TextCom2;
  return &COM2;
  }

int fputc(int ch, FILE *f)
  {
  switch(f->_Handle)
    {
    case COM0_FILENO: {PutFifo0(ch); break;}
    case COM1_FILENO: {PutFifo1(ch); break;}
    case COM2_FILENO: {PutFifo2(ch); break;}
    default: break;
    }
  return ch;
  }
#endif /* _DLIB_FILE_DESCRIPTOR */
#if STDOUT_COM_PORT==COM_PORT0
int putchar(int a)
  {
  PutFifo0(a);
  return a;
  }
#endif
#if STDOUT_COM_PORT==COM_PORT1
int putchar(int a)
  {
  PutFifo1(a);
  return a;
  }
#endif
#if STDOUT_COM_PORT==COM_PORT2
int putchar(int a)
  {
  PutFifo2(a);
  return a;
  }
#endif