lib_at91sam7x256.h

CANopen 协议栈源码 ,实现基本的CANopen 协议

//* \brief Test if the next transfer descriptor has been moved to the current td
//*----------------------------------------------------------------------------
__inline int AT91F_PDC_IsNextRxEmpty ( // \return return 1 if transfer is complete
	AT91PS_PDC pPDC )       // \arg pointer to a PDC controller
{
	return !(pPDC->PDC_RNCR);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_Open
//* \brief Open PDC: disable TX and RX reset transfer descriptors, re-enable RX and TX
//*----------------------------------------------------------------------------
__inline void AT91F_PDC_Open (
	AT91PS_PDC pPDC)       // \arg pointer to a PDC controller
{
    //* Disable the RX and TX PDC transfer requests
	AT91F_PDC_DisableRx(pPDC);
	AT91F_PDC_DisableTx(pPDC);

	//* Reset all Counter register Next buffer first
	AT91F_PDC_SetNextTx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetNextRx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetTx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetRx(pPDC, (char *) 0, 0);

    //* Enable the RX and TX PDC transfer requests
	AT91F_PDC_EnableRx(pPDC);
	AT91F_PDC_EnableTx(pPDC);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_Close
//* \brief Close PDC: disable TX and RX reset transfer descriptors
//*----------------------------------------------------------------------------
__inline void AT91F_PDC_Close (
	AT91PS_PDC pPDC)       // \arg pointer to a PDC controller
{
    //* Disable the RX and TX PDC transfer requests
	AT91F_PDC_DisableRx(pPDC);
	AT91F_PDC_DisableTx(pPDC);

	//* Reset all Counter register Next buffer first
	AT91F_PDC_SetNextTx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetNextRx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetTx(pPDC, (char *) 0, 0);
	AT91F_PDC_SetRx(pPDC, (char *) 0, 0);

}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_SendFrame
//* \brief Close PDC: disable TX and RX reset transfer descriptors
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_PDC_SendFrame(
	AT91PS_PDC pPDC,
	char *pBuffer,
	unsigned int szBuffer,
	char *pNextBuffer,
	unsigned int szNextBuffer )
{
	if (AT91F_PDC_IsTxEmpty(pPDC)) {
		//* Buffer and next buffer can be initialized
		AT91F_PDC_SetTx(pPDC, pBuffer, szBuffer);
		AT91F_PDC_SetNextTx(pPDC, pNextBuffer, szNextBuffer);
		return 2;
	}
	else if (AT91F_PDC_IsNextTxEmpty(pPDC)) {
		//* Only one buffer can be initialized
		AT91F_PDC_SetNextTx(pPDC, pBuffer, szBuffer);
		return 1;
	}
	else {
		//* All buffer are in use...
		return 0;
	}
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PDC_ReceiveFrame
//* \brief Close PDC: disable TX and RX reset transfer descriptors
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_PDC_ReceiveFrame (
	AT91PS_PDC pPDC,
	char *pBuffer,
	unsigned int szBuffer,
	char *pNextBuffer,
	unsigned int szNextBuffer )
{
	if (AT91F_PDC_IsRxEmpty(pPDC)) {
		//* Buffer and next buffer can be initialized
		AT91F_PDC_SetRx(pPDC, pBuffer, szBuffer);
		AT91F_PDC_SetNextRx(pPDC, pNextBuffer, szNextBuffer);
		return 2;
	}
	else if (AT91F_PDC_IsNextRxEmpty(pPDC)) {
		//* Only one buffer can be initialized
		AT91F_PDC_SetNextRx(pPDC, pBuffer, szBuffer);
		return 1;
	}
	else {
		//* All buffer are in use...
		return 0;
	}
}
/* *****************************************************************************
                SOFTWARE API FOR DBGU
   ***************************************************************************** */
//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_InterruptEnable
//* \brief Enable DBGU Interrupt
//*----------------------------------------------------------------------------
__inline void AT91F_DBGU_InterruptEnable(
        AT91PS_DBGU pDbgu,   // \arg  pointer to a DBGU controller
        unsigned int flag) // \arg  dbgu interrupt to be enabled
{
        pDbgu->DBGU_IER = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_InterruptDisable
//* \brief Disable DBGU Interrupt
//*----------------------------------------------------------------------------
__inline void AT91F_DBGU_InterruptDisable(
        AT91PS_DBGU pDbgu,   // \arg  pointer to a DBGU controller
        unsigned int flag) // \arg  dbgu interrupt to be disabled
{
        pDbgu->DBGU_IDR = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_GetInterruptMaskStatus
//* \brief Return DBGU Interrupt Mask Status
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_DBGU_GetInterruptMaskStatus( // \return DBGU Interrupt Mask Status
        AT91PS_DBGU pDbgu) // \arg  pointer to a DBGU controller
{
        return pDbgu->DBGU_IMR;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_DBGU_IsInterruptMasked
//* \brief Test if DBGU Interrupt is Masked
//*----------------------------------------------------------------------------
__inline int AT91F_DBGU_IsInterruptMasked(
        AT91PS_DBGU pDbgu,   // \arg  pointer to a DBGU controller
        unsigned int flag) // \arg  flag to be tested
{
        return (AT91F_DBGU_GetInterruptMaskStatus(pDbgu) & flag);
}

/* *****************************************************************************
                SOFTWARE API FOR PIO
   ***************************************************************************** */
//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgPeriph
//* \brief Enable pins to be drived by peripheral
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgPeriph(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int periphAEnable,  // \arg PERIPH A to enable
	unsigned int periphBEnable)  // \arg PERIPH B to enable

{
	pPio->PIO_ASR = periphAEnable;
	pPio->PIO_BSR = periphBEnable;
	pPio->PIO_PDR = (periphAEnable | periphBEnable); // Set in Periph mode
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgOutput
//* \brief Enable PIO in output mode
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgOutput(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int pioEnable)      // \arg PIO to be enabled
{
	pPio->PIO_PER = pioEnable; // Set in PIO mode
	pPio->PIO_OER = pioEnable; // Configure in Output
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgInput
//* \brief Enable PIO in input mode
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgInput(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int inputEnable)      // \arg PIO to be enabled
{
	// Disable output
	pPio->PIO_ODR  = inputEnable;
	pPio->PIO_PER  = inputEnable;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgOpendrain
//* \brief Configure PIO in open drain
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgOpendrain(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int multiDrvEnable) // \arg pio to be configured in open drain
{
	// Configure the multi-drive option
	pPio->PIO_MDDR = ~multiDrvEnable;
	pPio->PIO_MDER = multiDrvEnable;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgPullup
//* \brief Enable pullup on PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgPullup(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int pullupEnable)   // \arg enable pullup on PIO
{
		// Connect or not Pullup
	pPio->PIO_PPUDR = ~pullupEnable;
	pPio->PIO_PPUER = pullupEnable;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgDirectDrive
//* \brief Enable direct drive on PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgDirectDrive(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int directDrive)    // \arg PIO to be configured with direct drive

{
	// Configure the Direct Drive
	pPio->PIO_OWDR  = ~directDrive;
	pPio->PIO_OWER  = directDrive;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_CfgInputFilter
//* \brief Enable input filter on input PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_CfgInputFilter(
	AT91PS_PIO pPio,             // \arg pointer to a PIO controller
	unsigned int inputFilter)    // \arg PIO to be configured with input filter

{
	// Configure the Direct Drive
	pPio->PIO_IFDR  = ~inputFilter;
	pPio->PIO_IFER  = inputFilter;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_GetInput
//* \brief Return PIO input value
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_PIO_GetInput( // \return PIO input
	AT91PS_PIO pPio) // \arg  pointer to a PIO controller
{
	return pPio->PIO_PDSR;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_IsInputSet
//* \brief Test if PIO is input flag is active
//*----------------------------------------------------------------------------
__inline int AT91F_PIO_IsInputSet(
	AT91PS_PIO pPio,   // \arg  pointer to a PIO controller
	unsigned int flag) // \arg  flag to be tested
{
	return (AT91F_PIO_GetInput(pPio) & flag);
}


//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_SetOutput
//* \brief Set to 1 output PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_SetOutput(
	AT91PS_PIO pPio,   // \arg  pointer to a PIO controller
	unsigned int flag) // \arg  output to be set
{
	pPio->PIO_SODR = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_ClearOutput
//* \brief Set to 0 output PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_ClearOutput(
	AT91PS_PIO pPio,   // \arg  pointer to a PIO controller
	unsigned int flag) // \arg  output to be cleared
{
	pPio->PIO_CODR = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_ForceOutput
//* \brief Force output when Direct drive option is enabled
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_ForceOutput(
	AT91PS_PIO pPio,   // \arg  pointer to a PIO controller
	unsigned int flag) // \arg  output to be forced
{
	pPio->PIO_ODSR = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_Enable
//* \brief Enable PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_Enable(
        AT91PS_PIO pPio,   // \arg  pointer to a PIO controller
        unsigned int flag) // \arg  pio to be enabled
{
        pPio->PIO_PER = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_Disable
//* \brief Disable PIO
//*----------------------------------------------------------------------------
__inline void AT91F_PIO_Disable(
        AT91PS_PIO pPio,   // \arg  pointer to a PIO controller
        unsigned int flag) // \arg  pio to be disabled
{
        pPio->PIO_PDR = flag;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_PIO_GetStatus
//* \brief Return PIO Status
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_PIO_GetStatus( // \return PIO Status
        AT91PS_PIO pPio) // \arg  pointer to a PIO controller
{
        return pPio->PIO_PSR;