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C Runtime Library.

Collaboration diagram for C Runtime Library.:


Detailed Description

Complementary runtime support.

Normal C language runtime libraries are too large for small embedded systems and many functions require an underlying operating system. Compilers for the AVR provide a limited subset only, which do not include sufficient device support.

Nut/OS includes its own runtime library. When linked with an application, this library partly overrides the standard library which comes with your compiler.

Warning:
Using these functions requires to link nutcrt or nutcrtf before the compiler's standard libraries.


Modules

 * Standard I/O
 Standard stream interface to Nut/OS devices.
 Low Level I/O
 Low level input and output operations.
 Time handling Functions
 Implements some standard C time functions.
 Miscellaneous Functions
 Complementary runtime support.
 Standard Lib
 C Standard Library.
 Strings
 C Standard String Library.

Data Structures

struct  __iobuf

Defines

#define _IOUNG
#define _IOERR
#define _IOEOF
#define _IOPGM
#define BUFSIZ   128
 Default maximum size of stream buffers.
#define FOPEN_MAX   8
 Default maximum number of open streams.
#define FILENAME_MAX   255
 Default maximum size of filenames.


Define Documentation

#define BUFSIZ   128
 

Default maximum size of stream buffers.

Currently not used.

#define FILENAME_MAX   255
 

Default maximum size of filenames.

#define FOPEN_MAX   8
 

Default maximum number of open streams.


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