retargetio.c File Reference

Provide stdio retargeting for all supported toolchains.


Copyright 2018 Silicon Laboratories Inc.

The licensor of this software is Silicon Laboratories Inc. Your use of this software is governed by the terms of Silicon Labs Master Software License Agreement (MSLA) available at This software is distributed to you in Source Code format and is governed by the sections of the MSLA applicable to Source Code.

Definition in file retargetio.c.

#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "em_device.h"


int _close (int file)
 Close a file.
void _exit (int status)
 Exit the program.
int _fstat (int file, struct stat *st)
 Status of an open file.
int _getpid (void)
 Get process ID.
int _isatty (int file)
 Query whether output stream is a terminal.
int _kill (int pid, int sig)
 Send signal to process.
int _lseek (int file, int ptr, int dir)
 Set position in a file.
int _read (int file, char *ptr, int len)
 Read from a file.
caddr_t _sbrk (int incr)
 Increase heap.
int _write (int file, const char *ptr, int len)
 Write to a file.
int RETARGET_ReadChar (void)
 Receive a byte from USART/LEUART and put into global buffer.
int RETARGET_WriteChar (char c)
 Transmit single byte to USART/LEUART.


char _end