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/**
******************************************************************************
* @file k_log.c
* @author MCD Application Team
* @brief This file provides the kernel log functions
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "k_log.h"
#include "k_module.h"
#include "k_mem.h"
#include <stdio.h>
/** @addtogroup CORE
* @{
*/
/** @defgroup KERNEL_LOG
* @brief Kernel Log routines
* @{
*/
/* External variables --------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
/* Private defines -----------------------------------------------------------*/
#define LOG_DEPTH (4 * 512)
/* Private macros ------------------------------------------------------------*/
#ifdef __GNUC__
/* With GCC, small printf (option LD Linker->Libraries->Small printf
set to 'Yes') calls __io_putchar() */
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
#define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
/* Private variables ---------------------------------------------------------*/
uint8_t *pLOG_CacheBuffer;
uint32_t LOG_IN_ptr = 0;
/**
* @brief Init Kernel Log
* @param None
* @retval None
*/
void k_LogInit(void)
{
pLOG_CacheBuffer = (uint8_t *)k_malloc(LOG_DEPTH);
memset (pLOG_CacheBuffer, 0, LOG_DEPTH);
LOG_IN_ptr = 0;
}
/**
* @brief Redirect printf
* @param None
* @retval None
*/
PUTCHAR_PROTOTYPE
{
uint32_t cnt = 0;
if( LOG_IN_ptr++ >= LOG_DEPTH)
{
for (cnt = 1; cnt < LOG_DEPTH; cnt ++)
{
pLOG_CacheBuffer[cnt -1 ] = pLOG_CacheBuffer[cnt];
}
LOG_IN_ptr = LOG_DEPTH;
}
pLOG_CacheBuffer [LOG_IN_ptr - 1] = ch;
if(ch == '\n')
{
k_UpdateLog ((char *)pLOG_CacheBuffer);
}
return ch;
}
/**
* @}
*/
/**
* @}
*/