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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
/*
Title: Trace
About: Purpose
Standard output methods for reporting debug information, warnings and
errors, which can be turned on/off.
About: Usage
1 - Initialize the DBGU using <trace_CONFIGURE>.
2 - Uses the <trace_LOG> macro to output traces throughout the program.
3 - Turn off all traces by defining the NOTRACE symbol during
compilation.
4 - Disable a group of trace by changing the value of <trace_LEVEL>
during compilation; traces with a level below <trace_LEVEL> are not
generated.
*/
#ifndef TRACE_H
#define TRACE_H
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#if !defined(NOTRACE)
#include <board.h>
#include <dbgu/dbgu.h>
#include <pio/pio.h>
#include <stdio.h>
#endif
//------------------------------------------------------------------------------
// Definitions
//------------------------------------------------------------------------------
/*
Constants: Trace levels
trace_FATAL - Indicates a major error which prevents the program from
going any further.
trace_ERROR - Indicates an error which may not stop the program
execution, but which indicates there is a problem with the code.
trace_WARNING - Indicates that a minor error has happened. In most case
it can be discarded safely; it may even be expected.
trace_INFO - Informational trace about the program execution. Should
enable the user to see the execution flow.
trace_DEBUG - Traces whose only purpose is for debugging the program,
and which do not produce meaningful information otherwise.
*/
#define trace_DEBUG 0
#define trace_INFO 1
#define trace_WARNING 2
#define trace_ERROR 3
#define trace_FATAL 4
/*
Constant: trace_LEVEL
Minimum level of traces that are output. By default, all traces are
output; change the value of this symbol during compilation for a more
restrictive behavior.
*/
#if !defined(trace_LEVEL)
#define trace_LEVEL 0
#endif
/*
Macro: trace_CONFIGURE
Initializes the DBGU unless the NOTRACE symbol has been defined.
Parameters:
mode - DBGU mode.
baudrate - DBGU baudrate.
mck - Master clock frequency.
*/
#if !defined(NOTRACE)
#define trace_CONFIGURE(mode, baudrate, mck) { \
const Pin pinsDbgu[] = {PINS_DBGU}; \
PIO_Configure(pinsDbgu, PIO_LISTSIZE(pinsDbgu)); \
DBGU_Configure(mode, baudrate, mck); \
}
#else
#define trace_CONFIGURE(...)
#endif
/*
Macro: trace_LOG
Outputs a formatted string using <printf> if the log level is high
enough. Can be disabled by defining the NOTRACE symbol during
compilation.
Parameters:
level - Trace level (see <Trace levels>).
format - Formatted string to output.
... - Additional parameters, depending on the formatted string.
*/
#if !defined(NOTRACE)
#define trace_LOG(level, ...) { \
if (level >= trace_LEVEL) { \
printf(__VA_ARGS__); \
} \
}
#else
#define trace_LOG(...)
#endif
#endif //#ifndef TRACE_H
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