Root at 14:07, 15 December 2011

2011-12-15T14:07:50Z

← Older revision		Revision as of 16:07, 15 December 2011
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	</syntaxhighlight>		</syntaxhighlight>

	[[category:DSP]]		[[category:DSP]][[category:Software]]

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2011-03-02T12:50:00Z

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=== Printf via UART ===

<syntaxhighlight lang="c">
#include <stdio.h>

#define UART_PRINTFBUF_SIZE 256

T_Handle h_uart;

/*******************************************************************//**
@brief printf output via UART

@param format - format string, see printf
@return -
@note make sure not to exceed UART_PRINTFBUF_SIZE
***********************************************************************/
void UARTPrintf(const char *format, ...)
{
/***************************************************************************
locals
***************************************************************************/
va_list argptr;
static char buffer[UART_PRINTFBUF_SIZE];
int32_t len;

/***************************************************************************
initialize variable argument list
***************************************************************************/
va_start (argptr, format);

/***************************************************************************
print to buffer
***************************************************************************/
len = vsprintf (buffer, format, argptr);

/***************************************************************************
check buffer overflow
exit on overflow
***************************************************************************/
if (len >= UART_PRINTFBUF_SIZE)
{
exit (0xFF);
}

/***************************************************************************
output string via UART
***************************************************************************/
DM2_uartWriteStr (h_uart, buffer, DM2_UART_NOTIMEOUT);

/***************************************************************************
end variable argument list
***************************************************************************/
va_end(argptr);
}
</syntaxhighlight>

[[category:DSP]]

UART Printf - Revision history

Root at 14:07, 15 December 2011

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