61 lines
2.6 KiB
C
61 lines
2.6 KiB
C
/**
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******************************************************************************
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* @file stm32_tiny_vsnprintf.h
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* @author MCD Application Team
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* @brief Header for tiny_vsnprintf.c module
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2019 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef __STM32_TINY_VSNPRINTF_H__
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#define __STM32_TINY_VSNPRINTF_H__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Includes ------------------------------------------------------------------*/
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#include <stdarg.h>
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#include <string.h>
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/* Exported types ------------------------------------------------------------*/
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/* Exported constants --------------------------------------------------------*/
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/* External variables --------------------------------------------------------*/
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/* Exported functions ------------------------------------------------------- */
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/**
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* @brief Tiny implementation of vsnprintf() like function
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*
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* It has been adapted so that:
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* - Tiny implementation, when defining TINY_PRINTF, is available. In such as case,
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* not all the format are available. Instead, only %02X, %x, %d, %u, %s and %c are available.
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* %f,, %+, %#, %- and others are excluded
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* - Provide a snprintf like implementation. The size of the buffer is provided,
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* and the length of the filled buffer is returned (not including the final '\0' char).
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* The string may be truncated
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* @param Pointer to a buffer where the resulting C-string is stored. The buffer should have a size of
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* at least n characters.
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* @param Maximum number of bytes to be used in the buffer. The generated string has a length of at
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* most n-1, leaving space for the additional terminating null character.
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* @param C string that contains a format string that follows the same specifications as format
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* in printf (see printf for details).
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* @param A value identifying a variable arguments list initialized with va_start.
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* @retval The number of written char (note that this is different from vsnprintf()
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*/
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int tiny_vsnprintf_like(char *buf, const int size, const char *fmt, va_list args);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __STM32_TINY_VSNPRINTF_H__ */
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