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