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/*
* $Id$
*
* Serial Wire Debug Open Library.
* Library Body File.
*
* Copyright (C) 2010-2012, Tomasz Boleslaw CEDRO (http://www.tomek.cedro.info)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of the Tomasz Boleslaw CEDRO nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
* 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.*
*
* Written by Tomasz Boleslaw CEDRO <cederom@tlen.pl>, 2010-2012;
*
*/
/** \file liblibswd_core.c */
#include "libswd.h"
/*******************************************************************************
* \defgroup libswd_core Library and Context (de)initialization routines.
* @{
******************************************************************************/
/** LibSWD initialization routine.
* It should be called prior any operation made with libswd. It initializes
* command queue and basic parameters for context that is returned as pointer.
* \return pointer to the initialized swd context.
*/
libswd_ctx_t *libswd_init(void){
libswd_ctx_t *libswdctx;
libswdctx=(libswd_ctx_t *)calloc(1,sizeof(libswd_ctx_t));
if (libswdctx==NULL) return NULL;
libswdctx->driver=(libswd_driver_t *)calloc(1,sizeof(libswd_driver_t));
if (libswdctx->driver==NULL){
free(libswdctx);
return NULL;
}
libswdctx->cmdq=(libswd_cmd_t *)calloc(1,sizeof(libswd_cmd_t));
if (libswdctx->cmdq==NULL) {
libswd_deinit_ctx(libswdctx);
return NULL;
}
libswdctx->config.initialized=LIBSWD_TRUE;
libswdctx->config.trnlen=LIBSWD_TURNROUND_DEFAULT_VAL;
libswdctx->config.maxcmdqlen=LIBSWD_CMDQLEN_DEFAULT;
libswdctx->config.loglevel=LIBSWD_LOGLEVEL_NORMAL;
libswdctx->config.autofixerrors=LIBSWD_TRUE;
libswd_log(libswdctx, LIBSWD_LOGLEVEL_NORMAL, "LIBSWD_N: Using libswd (http://libswd.sf.net)\nLIBSWD_N: (c) Tomasz Boleslaw CEDRO (http://www.tomek.cedro.info)\n");
return libswdctx;
}
/** De-initialize selected swd context and free its memory.
* Note: This function will not free command queue for selected context!
* \param *libswdctx swd context pointer.
* \return LIBSWD_OK on success, LIBSWD_ERROR_CODE on failure.
*/
int libswd_deinit_ctx(libswd_ctx_t *libswdctx){
if (libswdctx==NULL) return LIBSWD_ERROR_NULLPOINTER;
free(libswdctx);
return LIBSWD_OK;
}
/** De-initialize command queue and free its memory on selected swd context.
* \param *libswdctx swd context pointer.
* \return number of commands freed, or LIBSWD_ERROR_CODE on failure.
*/
int libswd_deinit_cmdq(libswd_ctx_t *libswdctx){
if (libswdctx==NULL) return LIBSWD_ERROR_NULLPOINTER;
int res;
res=libswd_cmdq_free(libswdctx->cmdq);
if (res<0) return res;
return res;
}
/** De-initialize selected swd context and its command queue.
* \param *libswdctx swd context pointer.
* \return number of elements freed, or LIBSWD_ERROR_CODE on failure.
*/
int libswd_deinit(libswd_ctx_t *libswdctx){
int res, cmdcnt=0;
res=libswd_deinit_cmdq(libswdctx);
if (res<0) return res;
cmdcnt=res;
res=libswd_deinit_ctx(libswdctx);
if (res<0) return res;
return cmdcnt+res;
}
/** @} */