void can_irq_set(can_t *obj, CanIrqType irq, uint32_t enable)
{
CAN_T *can_base = (CAN_T *) NU_MODBASE(obj->can);
CAN_EnterInitMode(can_base, ((enable != 0 )? CAN_CON_IE_Msk :0) );
switch (irq)
{
case IRQ_ERROR:
case IRQ_BUS:
case IRQ_PASSIVE:
can_base->CON = can_base->CON |CAN_CON_EIE_Msk;
can_base->CON = can_base->CON |CAN_CON_SIE_Msk;
break;
case IRQ_RX:
case IRQ_TX:
case IRQ_OVERRUN:
case IRQ_WAKEUP:
can_base->CON = can_base->CON |CAN_CON_SIE_Msk;
break;
default:
break;
}
CAN_LeaveInitMode(can_base);
NVIC_SetVector(CAN0_IRQn, (uint32_t)&CAN0_IRQHandler);
NVIC_EnableIRQ(CAN0_IRQn);
}
/*******************************************************************************
* Function Name : CAN_Init
* Description : Initializes the CAN peripheral according to the specified
* parameters in the CAN_InitStruct.
* Input : CAN_InitStruct: pointer to a CAN_InitTypeDef structure that
* contains the configuration information for the CAN peripheral.
* Output : None
* Return : None
*******************************************************************************/
void CAN_Init(CAN_InitTypeDef* CAN_InitStruct)
{
CAN_EnterInitMode(CAN_CR_CCE | CAN_InitStruct->CAN_ConfigParameters);
CAN_SetBitrate(CAN_InitStruct->CAN_Bitrate);
CAN_LeaveInitMode();
CAN_LeaveTestMode();
}
void USB2CAN_set_speed(u8 speed,CAN_TIMINGS *CanTimings)
{
CAN_InitTypeDef CAN_Struct;
switch(speed)
{
case CAN_BAUD_10:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_10K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_20:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_20K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_50:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_50K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_100:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_100K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_125:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_125K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_250:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_250K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_500:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_500K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_800:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_800K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_1000:
CAN_Struct.CAN_Bitrate=CAN_BITRATE_1M;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
case CAN_BAUD_MANUAL:
CAN_EnterInitMode(CAN_CR_CCE | CAN_CR_IE);
CAN_SetTiming(CanTimings->tseg1,CanTimings->tseg2,CanTimings->sjw,CanTimings->brp);
CAN_LeaveInitMode();
break;
default: // 125K
CAN_Struct.CAN_Bitrate=CAN_BITRATE_125K;
CAN_Struct.CAN_ConfigParameters = CAN_CR_IE ;
CAN_Init( &CAN_Struct );
break;
}
}
