/****************************************Copyright (c)**************************************************
**                               廣州周立功單片機發(fā)展有限公司
**                                     研    究    所
**                                        產(chǎn)品一部 
**                                 http://www.zlgmcu.com
**-----------------------------------------------------------文件信息--------------------------------------------------------------------------------
**	文   件  	名:	CANAPP.C
** 	版  		本:	v1.0
** 	日		期:	2004年2月23日
**	描		述:	CAN模塊應用接口函數(shù)說明文件。該文件中的函數(shù)，如果用戶有特別的需要，可以進行修改。
********************************************************************************************************/
#define		_CANAPP_GLOBAL_
#include	"config.h"
/*
***********************************************************************************************************
**函數(shù)原型		:  	void	CANIntPrg(void)
**參數(shù)說明		:  	無
**返回值		:	無	
**說	明		:	CAN控制器中斷處理函數(shù)
************************************************************************************************************/
__irq		void		CANIntPrg(void)
{
	UINT32 	j;
	uCANICR k;
	if(CANLUTerr.Word != 0 )	//LUT Error Program
	{
		//add or modify code
		j=CANLUTerrAd.Word;	
	}
	for(j=0;j<CAN_MAX_NUM;j++)
	{
		k=CANICR(j);
		if(k.Bits.RI_BIT != 0)
		{
			//add code
			WriteCANRcvCyBuf(j);
		}
		if(k.Bits.TI1_BIT != 0)
		{
			//add code
		}
		if(k.Bits.TI2_BIT != 0)
		{
			//add code
		}
		if(k.Bits.TI3_BIT != 0)
		{
			//add code
		}
		if(k.Bits.BEI_BIT != 0)
		{
			//add code
			CanBufOffLinePrg(j);
		}
		if(k.Bits.ALI_BIT != 0)
		{
			//add code
		}
		if(k.Bits.EPI_BIT != 0)
		{
			//add code
		}
		if(k.Bits.WUI_BIT != 0)
		{
			//add code
		}
		if(k.Bits.DOI_BIT != 0)
		{
			//add code
			ClrCanDataOver(j);
		}
	}
	VICVectAddr = 0;
}
/*
***********************************************************************************************************
**函數(shù)原型		:  	void	InitCAN(eCANNUM CanNum)
**參數(shù)說明		:  	CanNum	-->>	CAN控制器，值不能大于CAN_MAX_NUM 規(guī)定的值
**返回值		:	無	
**說	明		;	本函數(shù)用于初始化CAN控制器
************************************************************************************************************/
void	InitCAN(eCANNUM CanNum)
{	
	HwEnCAN(CanNum);																	
	SoftRstCAN(CanNum);																
	CANEWL(CanNum).Bits.EWL_BIT = USE_EWL_CAN[CanNum];										
	//初始化波特率
	CANBTR(CanNum).Word = USE_BTR_CAN[CanNum];											
	//初始化中斷為非向量中斷
	VICDefVectAddr =(UINT32)CANIntPrg;
	VICIntEnable |=(1<<19)|(1<<(20+ CanNum))|(1<<(26+ CanNum));
	CANIER(CanNum).Word= USE_INT_CAN[CanNum];												
	//配置驗收濾波器(旁路狀態(tài))
	CANAFMR.Bits.AccBP_BIT =1;	
	//初始化模式
	CANMOD(CanNum).Bits.TPM_BIT = USE_TPM_CAN[CanNum];										
	CANMOD(CanNum).Bits. LOM_BIT = USE_MOD_CAN[CanNum];
	//初始化接收環(huán)形緩沖區(qū)
	CANRcvBufApp.FullFlag1=CANRcvBufApp.FullFlag2=CANRcvBufApp.FullFlag3=CANRcvBufApp.FullFlag4=0;
	CANRcvBufApp.ReadPoint1=CANRcvBufApp.ReadPoint2=CANRcvBufApp.ReadPoint3=CANRcvBufApp.ReadPoint4=0;
	CANRcvBufApp.WritePoint1=CANRcvBufApp.WritePoint2=CANRcvBufApp.WritePoint3=CANRcvBufApp.WritePoint4=0;
	//啟動CAN
	SoftEnCAN(CanNum);
}
/*
***********************************************************************************************************
**函數(shù)原型		:  	UINT32	CANSendData(eCANNUM CanNum,UINT32 Cmd,P_stcTxBUF Buf)
**參數(shù)說明		:  	CanNum	-->>	CAN控制器，值不能大于CAN_MAX_NUM 規(guī)定的值
					Cmd	-->	發(fā)送命令字
					Buf	-->	要發(fā)送的數(shù)據(jù)
**返回值		:	無	
**說	明		:	本函數(shù)用于將數(shù)據(jù)發(fā)送到CAN總線
************************************************************************************************************/
UINT32		CANSendData(eCANNUM CanNum,UINT32 Cmd,P_stcTxBUF Buf)
{
	UINT32 i,status=0;
	if(0 != CANSR(CanNum).Bits.TBS1_BIT)
	{
		i=SEND_TX_BUF1;
	}
	else if(0 != CANSR(CanNum).Bits.TBS2_BIT)
	{
		i=SEND_TX_BUF2;
	}
	else if(0 != CANSR(CanNum).Bits.TBS3_BIT)
	{
		i=SEND_TX_BUF3;
	}
	else
	{
		i=0xFF;
	}
	status=WriteCanTxBuf(CanNum,i,  USE_TPM_CAN[CanNum],  Buf);
	if(status == 0)
	{
		#if 1
		if(CANMOD(CanNum).Bits.SM_BIT != 0)												
		{
			CanQuitSM(CanNum);
		}
		#endif
		CanSendCmd(CanNum,Cmd,i);
	}
	return (status);
}
/*
***********************************************************************************************************
**函數(shù)原型		:  	UINT32	ReadCANRcvCyBuf(eCANNUM CanNum,stcRxBUF *Buf)
**參數(shù)說明		:  	CanNum	-->	CAN控制器，值不能大于CAN_MAX_NUM 規(guī)定的值
					Buf		-->	使用驅(qū)動接收到的緩沖區(qū)數(shù)據(jù)
**返回值		:	＝0，驅(qū)動接收到數(shù)據(jù)。
					!＝0，驅(qū)動沒接收到數(shù)據(jù)。	
**說	明		:	本函數(shù)用于用戶調(diào)用使用CAN驅(qū)動接收到的數(shù)據(jù)。
************************************************************************************************************/
UINT32	ReadCANRcvCyBuf(eCANNUM CanNum,stcRxBUF *Buf)
{
	UINT32	status=0;
	switch(CanNum)
	{
		case	CAN1:
			if((0 != CANRcvBufApp.FullFlag1) ||
				(CANRcvBufApp.ReadPoint1 != CANRcvBufApp.WritePoint1))
			{
				*Buf=CANRcvBufApp.RcvBuf[CAN1][CANRcvBufApp.ReadPoint1];
				if(++CANRcvBufApp.ReadPoint1 >= USE_CAN_RCV_BUF_SIZE)
				{
					CANRcvBufApp.ReadPoint1 =0;
				}
				CANRcvBufApp.FullFlag1=0;
			}
			else 
			{
				status=1;
			}
			break;
		case	CAN2:
			if((0 != CANRcvBufApp.FullFlag2) ||
				(CANRcvBufApp.ReadPoint2 != CANRcvBufApp.WritePoint2))
			{
				*Buf=CANRcvBufApp.RcvBuf[CAN2][CANRcvBufApp.ReadPoint2];
				if(++CANRcvBufApp.ReadPoint2 >= USE_CAN_RCV_BUF_SIZE)
				{
					CANRcvBufApp.ReadPoint2 =0;
				}
				CANRcvBufApp.FullFlag2=0;
			}
			case	CAN3:
			if((0 != CANRcvBufApp.FullFlag3) ||
				(CANRcvBufApp.ReadPoint3 != CANRcvBufApp.WritePoint3))
			{
				*Buf=CANRcvBufApp.RcvBuf[CAN3][CANRcvBufApp.ReadPoint3];
				if(++CANRcvBufApp.ReadPoint3 >= USE_CAN_RCV_BUF_SIZE)
				{
					CANRcvBufApp.ReadPoint3 =0;
				}
				CANRcvBufApp.FullFlag3=0;
			}
			else 
			{
				status=1;
			}
			break;
		case	CAN4:
			if((0 != CANRcvBufApp.FullFlag4) ||
				(CANRcvBufApp.ReadPoint4 != CANRcvBufApp.WritePoint4))
			{
				*Buf=CANRcvBufApp.RcvBuf[CAN4][CANRcvBufApp.ReadPoint4];
				if(++CANRcvBufApp.ReadPoint4 >= USE_CAN_RCV_BUF_SIZE)
				{
					CANRcvBufApp.ReadPoint4 =0;
				}
				CANRcvBufApp.FullFlag4=0;
			}
			else 
			{
				status=1;
			}
			break;
		break;
		default:
			status=1;
			break;
	}
	return status;
}
/*
***********************************************************************************************************
**函數(shù)原型		:  	void	WriteCANRcvCyBuf(eCANNUM CanNum)
**參數(shù)說明		:  	CanNum	-->>	CAN控制器，值不能大于CAN_MAX_NUM 規(guī)定的值
**返回值		:		
**說	明		:	本函數(shù)用于驅(qū)動將收到的CAN數(shù)據(jù)寫入環(huán)形緩沖區(qū)
************************************************************************************************************/
void	WriteCANRcvCyBuf(eCANNUM CanNum)
{
	switch(CanNum)
	{
		case	CAN1:
			if((0 == CANRcvBufApp.FullFlag1))
			{
				CANRcvBufApp.RcvBuf[CAN1][CANRcvBufApp.WritePoint1] = RxBUF(CAN1);
				if(++CANRcvBufApp.WritePoint1 >= USE_CAN_RCV_BUF_SIZE)
				{
					CANRcvBufApp.WritePoint1=0;
				}
				if(CANRcvBufApp.WritePoint1 == CANRcvBufApp.ReadPoint1)
				{
					CANRcvBufApp.FullFlag1 =1;
				}
			}
			break;
		case	CAN2:
			if((0 == CANRcvBufApp.FullFlag2))
			{
				CANRcvBufApp.RcvBuf[CAN2][CANRcvBufApp.WritePoint2] = RxBUF(CAN2);
				if(++CANRcvBufApp.WritePoint2 >= USE_CAN_RCV_BUF_SIZE)
				{
					CANRcvBufApp.WritePoint2=0;
				}
				if(CANRcvBufApp.WritePoint2 == CANRcvBufApp.ReadPoint2)
				{
					CANRcvBufApp.FullFlag2 =1;
				}
			}
			break;

		default:
			break;
	}
	RelCanRecBuf(CanNum);
}
//應用常量定義
//使用工作模式
const 	UINT32	USE_MOD_CAN[4] = 
{
	USE_MODE_CAN1,
	USE_MODE_CAN2,
	USE_MODE_CAN3,
	USE_MODE_CAN4
};

//使用波特率
const 	UINT32	USE_BTR_CAN[4] = 
{
	USE_BTR_CAN1,
	USE_BTR_CAN2,
	USE_BTR_CAN3,
	USE_BTR_CAN4
};
//使用發(fā)送緩沖區(qū)發(fā)送優(yōu)先級模式選擇
const 	UINT32	USE_TPM_CAN[4] = 
{
	USE_TPM_CAN1,
	USE_TPM_CAN2,
	USE_BTR_CAN3,
	USE_BTR_CAN4
};
//應用中斷
const 	UINT32	USE_INT_CAN[4] = 
{
	USE_INT_CAN1,
	USE_INT_CAN2,
	USE_INT_CAN3,
	USE_INT_CAN4
};
//應用報警限制
const	UINT32	USE_EWL_CAN[4] = 
{
	USE_EWL_CAN1,
	USE_EWL_CAN2,
	USE_EWL_CAN3,
	USE_EWL_CAN4
};
/*********************************************************************************************************
**                            End Of File
********************************************************************************************************/