stubs.c File Reference

System-level function implementations for Cortex-M4. More...

#include "navhal.h"

Include dependency graph for stubs.c:

Macros
#define	CORTEX_M4

Functions
int	putchar (int ch)
	Write a character to the standard output.
void	abort (void)
	Abnormal program termination.
void *	memcpy (void *dest, const void *src, unsigned int n)
	Copy memory area.

Detailed Description

System-level function implementations for Cortex-M4.

This file provides minimal implementations of standard library functions required for the NAVHAL framework. It includes:

• Character output (putchar)
• Program termination (abort)
• Memory operations (memcpy)

These implementations are optimized for embedded use and avoid dependencies on the standard C library.

Copyright

© NAVROBOTEC PVT. LTD.

Macro Definition Documentation

CORTEX_M4

#define CORTEX_M4

Function Documentation

abort()

void abort

(

void

)

Abnormal program termination.

Implements the standard abort() function by entering an infinite loop. This is the default behavior for unrecoverable errors in the embedded environment.

memcpy()

void * memcpy	(	void *	dest,
		const void *	src,
		unsigned int	n )

Copy memory area.

Parameters

[out]	dest	Pointer to destination memory
[in]	src	Pointer to source memory
[in]	n	Number of bytes to copy

Returns

Pointer to destination memory

Implements the standard memcpy() function with byte-by-byte copy. This is a minimal implementation without alignment optimizations.

putchar()

int putchar

(

int

ch

)

Write a character to the standard output.

Parameters

[in]

ch

Character to output

Returns

The character written

Implements the standard putchar() function by redirecting output to UART2. This enables printf() functionality when using the standard library.