94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
///////////////////////////////////////////////////////////////////////////////
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// \author (c) Marco Paland (info@paland.com)
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// 2014-2019, PALANDesign Hannover, Germany
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//
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// \license The MIT License (MIT)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on
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// embedded systems with a very limited resources.
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// Use this instead of bloated standard/newlib printf.
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// These routines are thread safe and reentrant.
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef PICO_PRINTF_H_
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#define PICO_PRINTF_H_
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/** \file printf.h
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* \defgroup pico_printf pico_printf
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*
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* Compact replacement for printf by Marco Paland (info@paland.com)
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "pico.h"
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#include <stdio.h>
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#include <stdarg.h>
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// PICO_CONFIG: PICO_PRINTF_ALWAYS_INCLUDED, Whether to always include printf code even if only called weakly (by panic), type=bool, default=1 in debug build 0 otherwise, group=pico_printf
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#ifndef PICO_PRINTF_ALWAYS_INCLUDED
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#ifndef NDEBUG
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#define PICO_PRINTF_ALWAYS_INCLUDED 1
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#else
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#define PICO_PRINTF_ALWAYS_INCLUDED 0
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#endif
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#endif
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#if LIB_PICO_PRINTF_PICO
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// weak raw printf may be a puts if printf has not been called,
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// so that we can support gc of printf when it isn't called
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//
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// it is called raw to distinguish it from the regular printf which
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// is in stdio.c and does mutex protection
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#if !PICO_PRINTF_ALWAYS_INCLUDED
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bool __printflike(1, 0) weak_raw_printf(const char *fmt, ...);
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bool weak_raw_vprintf(const char *fmt, va_list args);
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#else
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#define weak_raw_printf(...) ({printf(__VA_ARGS__); true;})
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#define weak_raw_vprintf(fmt,va) ({vprintf(fmt,va); true;})
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#endif
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/**
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* printf with output function
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* You may use this as dynamic alternative to printf() with its fixed _putchar() output
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* \param out An output function which takes one character and an argument pointer
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* \param arg An argument pointer for user data passed to output function
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* \param format A string that specifies the format of the output
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* \return The number of characters that are sent to the output function, not counting the terminating null character
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*/
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int vfctprintf(void (*out)(char character, void *arg), void *arg, const char *format, va_list va);
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#else
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#define weak_raw_printf(...) ({printf(__VA_ARGS__); true;})
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#define weak_raw_vprintf(fmt,va) ({vprintf(fmt,va); true;})
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // _PRINTF_H_
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