An example PIC32 assert() function implementation

I wrote a simple assert() implementation that you can customize for your application. This implementation writes the assert message to a simple array for inspection in the watch window. You should be able to easily customize the assertion failure behavior for your application.

#pragma config FPLLODIV = DIV_1, FPLLMUL = MUL_18
#pragma config FPLLIDIV = DIV_2, FWDTEN = OFF
#pragma config FCKSM = CSDCMD, FPBDIV = DIV_8
#pragma config OSCIOFNC = OFF, POSCMOD = HS
#pragma config IESO = OFF, FSOSCEN = OFF, FNOSC = PRIPLL
#pragma config CP = OFF, BWP = OFF, PWP = OFF
#include <p32xxxx.h>
#include <plib.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib..h>

#ifndef __DEBUG
#define assert(ignore)  ((void)0)
#else
#undef assert
#undef __myassert
#define assert(expression)  \
((void)((expression) ? 0 : \
(__myassert (#expression, __FILE__, \
__LINE__), 0)))

#define __myassert(expression, file, line)  \
__myassfail("Failed assertion `%s' at line %d of `%s'.", \
  expression, line, file)

static void
__myassfail(const char *format,...)
{
va_list arg;
static char mystderr[0x80];
va_start(arg, format);
(void)vsprintf(&mystderr[0], format, arg);
while(1);
va_end(arg);
}
#endif

int
main (void)
{
SYSTEMConfig(80000000, SYS_CFG_ALL);
int x = 1;
int y = 2;

assert((1+3)==(x+y));
return 0;
}

Comments?

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