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lists.c
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lists.c
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/*
* USB2CAN firmware
*
* Copyright (C) 2007-2015 Gediminas Simanskis (gedsim@gmail.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published
* by the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program.
*/
#include "lists.h"
/******************** Messages lists *******************************/
void CanListInit(CanMsgList *canmsglist)
{
EIC_IRQCmd(DISABLE);
canmsglist->Head = 0;
canmsglist->Tail = 0;
canmsglist->Count = 0;
EIC_IRQCmd(ENABLE);
}
void CanListClear(CanMsgList *canmsglist)
{
EIC_IRQCmd(DISABLE);
canmsglist->Head = 0;
canmsglist->Tail = 0;
canmsglist->Count = 0;
EIC_IRQCmd(ENABLE);
}
bool CanListPut(CanMsgList *canmsglist,canmsg *CanMsg)
{
u16 temp;
bool res = FALSE;
EIC_IRQCmd(DISABLE);
temp = ( canmsglist->Head + 1 ) % CAN_LIST_SIZE;
if( temp != canmsglist->Tail )
{
canmsglist->CanMsgBuf[temp] = *CanMsg;
canmsglist->Head = temp;
canmsglist->Count++;
res = TRUE;
}
else
res = FALSE;
EIC_IRQCmd(ENABLE);
return res;
}
bool CanListGet(CanMsgList *canmsglist,canmsg *CanMsg)
{
u16 temp;
bool res = FALSE;
EIC_IRQCmd(DISABLE);
if( canmsglist->Head != canmsglist->Tail )
{
temp = ( canmsglist->Tail + 1 ) % CAN_LIST_SIZE;
*CanMsg = canmsglist->CanMsgBuf[temp];
canmsglist->Tail = temp;
canmsglist->Count--;
res = TRUE;
}
else
res = FALSE;
EIC_IRQCmd(ENABLE);
return res;
}
u16 CanListCount(CanMsgList *canmsglist)
{
return canmsglist->Count;
}
///////////////////////////////////////////////////////////////////////////////
// Kintamieji
//
// CAN data lists
CanMsgList CanRXlist;
CanMsgList CanTXlist;
//CanMsgList CanErrList;
//canmsg ErrorCanMsg;
//canmsg RespCanMsg;