#ifndef	__CAN__H
#define	__CAN__H

//********************************************************************
//CAN GPIO初始化
#define	CAN_GPIO		GPIOA
#define	CAN_GPIO_TX		GPIO_Pin_12
#define	CAN_GPIO_TX_SRC	GPIO_PinSource12
#define	CAN_GPIO_TX_AF	GPIO_AF_4
#define	CAN_GPIO_RX		GPIO_Pin_11
#define	CAN_GPIO_RX_SRC	GPIO_PinSource11
#define	CAN_GPIO_RX_AF	GPIO_AF_4
#define	CAN_GPIO_RCC	RCC_AHBPeriph_GPIOA
#define	CAN_GPIO_Init()	do{										\
	GPIO_InitTypeDef GPIO_InitStructure;						\
	RCC_AHBPeriphClockCmd(CAN_GPIO_RCC , ENABLE);				\
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN, ENABLE);			\
	GPIO_PinAFConfig(CAN_GPIO,CAN_GPIO_TX_SRC,CAN_GPIO_TX_AF);	\
	GPIO_PinAFConfig(CAN_GPIO,CAN_GPIO_RX_SRC,CAN_GPIO_RX_AF);	\
	SYSCFG->CFGR1 |= SYSCFG_CFGR1_PA11_PA12_RMP;				\
	GPIO_InitStructure.GPIO_Pin=CAN_GPIO_TX;					\
	GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF;					\
	GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_UP;					\
	GPIO_InitStructure.GPIO_OType=GPIO_OType_OD;				\
	GPIO_Init(CAN_GPIO, &GPIO_InitStructure);					\
	GPIO_InitStructure.GPIO_Pin=CAN_GPIO_RX;					\
	GPIO_InitStructure.GPIO_OType=GPIO_OType_PP;				\
	GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;				\
	GPIO_InitStructure.GPIO_PuPd=GPIO_PuPd_NOPULL;				\
	GPIO_Init(CAN_GPIO, &GPIO_InitStructure);					\
}while(0)
#define	CAN_TX_LOW()	GPIO_ResetBits(CAN_GPIO,CAN_GPIO_TX)
#define	CAN_RX_LOW()	GPIO_ResetBits(CAN_GPIO,CAN_GPIO_RX)

#define	CAN_NVIC_Init()	do{										\
	NVIC_InitTypeDef NVIC_InitStructure;						\
	NVIC_InitStructure.NVIC_IRQChannel=CEC_CAN_IRQn;			\
	NVIC_InitStructure.NVIC_IRQChannelPriority=0;				\
	NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;				\
	NVIC_Init(&NVIC_InitStructure);								\
}while(0)

//********************************************************************
//CAN_STBY初始化
#define	CAN_STBY_PIN		GPIO_Pin_10
#define	CAN_STBY_PORT		GPIOA
#define	CAN_STBY_PORT_RCC	RCC_AHBPeriph_GPIOA
#define	CAN_STBY_Init()	do{											\
	GPIO_InitTypeDef  GPIO_InitStructure;							\
    RCC_AHBPeriphClockCmd(CAN_STBY_PORT_RCC, ENABLE);				\
    GPIO_InitStructure.GPIO_Pin = CAN_STBY_PIN;						\
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;					\
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;					\
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;				\
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;				\
    GPIO_Init(CAN_STBY_PORT, &GPIO_InitStructure);					\
    CAN_STBY_Off();													\
}while(0)
//LED输出控制
#define	CAN_STBY_Off()		GPIO_ResetBits(CAN_STBY_PORT,CAN_STBY_PIN)
#define	CAN_STBY_On()		GPIO_SetBits(CAN_STBY_PORT,CAN_STBY_PIN)

//********************************************************************
typedef struct
{
    INT32U StdId;   
    union
    {
        INT32U ExtId;          
        struct
        {
            INT8U SA              :8; //Source Address    源地址        
            INT8U PS_GE           :8; //PDU Specific      目标地址  
                                    //PDU2 为组扩展     //如果高四位为1 ,PS就是组扩展
            INT8U PF              :8; // PDU FORMAT        以及数据域对应的参数组编号
                                    // CA should use only PDUFormat.
                                    // PDU1   PF值范围 0-239     PS 含义:目标地址
                                    // PDU2   PF值范围 240-245   PS 含义:组扩展
            INT8U DP              :1; //DataPage          0  PDU1    1  PDU2    
            INT8U EDP             :1; //0   ///EDP
            INT8U Priod           :3; //优先级 
            INT8U PDUFormat_Top   :3; //0             // This needs pre and post processing.
        }Bits;
    }Bytes;
    INT8U IDE;      
    INT8U RTR;    
    INT8U DLC;   
    INT8U FMI;        
} PDU2_Str;

//********************************************************************

#define	CAN_TX_BUFF_Size	10
#define	CAN_RX_BUFF_Size	10


//********************************************************************
extern	CanRxMsg	CAN_RX_Buffer[CAN_RX_BUFF_Size];
extern	CanTxMsg	CAN_TX_Buffer[CAN_TX_BUFF_Size];

extern	void	CAN1_Init(void);
extern	INT8U	CAN1_Polling(void);
extern	void	CAN1_InterruptMode(void);
extern	void	CAN1_Transmit(void);
extern	void	CAN1_WriteTxBuffer(INT8U *ptr,INT32U Len,INT32U StdID,INT32U ExtID);

#endif