lib_at91rm3400.h

ARM9200开发板的ROM boot程序源码1.0

    AT91F_PDC_Open((AT91PS_PDC) &(pUSART->US_RPR));

    //* Define the USART mode
    pUSART->US_MR = mode  ;

}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_EnableRx
//* \brief Enable receiving characters
//*----------------------------------------------------------------------------
__inline void AT91F_US_EnableRx (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
    //* Enable receiver
    pUSART->US_CR = AT91C_US_RXEN;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_EnableTx
//* \brief Enable sending characters
//*----------------------------------------------------------------------------
__inline void AT91F_US_EnableTx (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
    //* Enable  transmitter
    pUSART->US_CR = AT91C_US_TXEN;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_ResetRx
//* \brief Reset Receiver and re-enable it
//*----------------------------------------------------------------------------
__inline void AT91F_US_ResetRx (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
	//* Reset receiver
	pUSART->US_CR = AT91C_US_RSTRX;
    //* Re-Enable receiver
    pUSART->US_CR = AT91C_US_RXEN;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_ResetTx
//* \brief Reset Transmitter and re-enable it
//*----------------------------------------------------------------------------
__inline void AT91F_US_ResetTx (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
	//* Reset transmitter
	pUSART->US_CR = AT91C_US_RSTTX;
    //* Enable transmitter
    pUSART->US_CR = AT91C_US_TXEN;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_DisableRx
//* \brief Disable Receiver
//*----------------------------------------------------------------------------
__inline void AT91F_US_DisableRx (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
    //* Disable receiver
    pUSART->US_CR = AT91C_US_RXDIS;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_DisableTx
//* \brief Disable Transmitter
//*----------------------------------------------------------------------------
__inline void AT91F_US_DisableTx (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
    //* Disable transmitter
    pUSART->US_CR = AT91C_US_TXDIS;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_Close
//* \brief Close USART: disable IT disable receiver and transmitter, close PDC
//*----------------------------------------------------------------------------
__inline void AT91F_US_Close (
	AT91PS_USART pUSART)     // \arg pointer to a USART controller
{
    //* Reset the baud rate divisor register
    pUSART->US_BRGR = 0 ;

    //* Reset the USART mode
    pUSART->US_MR = 0  ;

    //* Reset the Timeguard Register
    pUSART->US_TTGR = 0;

    //* Disable all interrupts
    pUSART->US_IDR = 0xFFFFFFFF ;

    //* Abort the Peripheral Data Transfers
    AT91F_PDC_Close((AT91PS_PDC) &(pUSART->US_RPR));

    //* Disable receiver and transmitter and stop any activity immediately
    pUSART->US_CR = AT91C_US_TXDIS | AT91C_US_RXDIS | AT91C_US_RSTTX | AT91C_US_RSTRX ;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_TxReady
//* \brief Return 1 if a character can be written in US_THR
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_US_TxReady (
	AT91PS_USART pUSART )     // \arg pointer to a USART controller
{
    return (pUSART->US_CSR & AT91C_US_TXRDY);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_RxReady
//* \brief Return 1 if a character can be read in US_RHR
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_US_RxReady (
	AT91PS_USART pUSART )     // \arg pointer to a USART controller
{
    return (pUSART->US_CSR & AT91C_US_RXRDY);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_Error
//* \brief Return the error flag
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_US_Error (
	AT91PS_USART pUSART )     // \arg pointer to a USART controller
{
    return (pUSART->US_CSR &
    	(AT91C_US_OVRE |  // Overrun error
    	 AT91C_US_FRAME | // Framing error
    	 AT91C_US_PARE));  // Parity error
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_PutChar
//* \brief Send a character,does not check if ready to send
//*----------------------------------------------------------------------------
__inline void AT91F_US_PutChar (
	AT91PS_USART pUSART,
	int character )
{
    pUSART->US_THR = (character & 0x1FF);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_GetChar
//* \brief Receive a character,does not check if a character is available
//*----------------------------------------------------------------------------
__inline int AT91F_US_GetChar (
	const AT91PS_USART pUSART)
{
    return((pUSART->US_RHR) & 0x1FF);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_SendFrame
//* \brief Return 2 if PDC has been initialized with Buffer and Next Buffer, 1 if PDC has been initializaed with Next Buffer, 0 if PDC is busy
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_US_SendFrame(
	AT91PS_USART pUSART,
	char *pBuffer,
	unsigned int szBuffer,
	char *pNextBuffer,
	unsigned int szNextBuffer )
{
	return AT91F_PDC_SendFrame(
		(AT91PS_PDC) &(pUSART->US_RPR),
		pBuffer,
		szBuffer,
		pNextBuffer,
		szNextBuffer);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_US_ReceiveFrame
//* \brief Return 2 if PDC has been initialized with Buffer and Next Buffer, 1 if PDC has been initializaed with Next Buffer, 0 if PDC is busy
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_US_ReceiveFrame (
	AT91PS_USART pUSART,
	char *pBuffer,
	unsigned int szBuffer,
	char *pNextBuffer,
	unsigned int szNextBuffer )
{
	return AT91F_PDC_ReceiveFrame(
		(AT91PS_PDC) &(pUSART->US_RPR),
		pBuffer,
		szBuffer,
		pNextBuffer,
		szNextBuffer);
}

/* *****************************************************************************
                SOFTWARE API FOR AIC
   ***************************************************************************** */
#define AT91C_AIC_BRANCH_OPCODE ((void (*) ()) 0xE51FFF20) // ldr, pc, [pc, #-&F20]

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_ConfigureIt
//* \brief Interrupt Handler Initialization
//*----------------------------------------------------------------------------
__inline unsigned int AT91F_AIC_ConfigureIt (
	AT91PS_AIC pAic,  // \arg pointer to the AIC registers
	unsigned int irq_id,     // \arg interrupt number to initialize
	unsigned int priority,   // \arg priority to give to the interrupt
	unsigned int src_type,   // \arg activation and sense of activation
	void (*newHandler) (void) ) // \arg address of the interrupt handler
{
	unsigned int oldHandler;
    unsigned int mask ;

    oldHandler = pAic->AIC_SVR[irq_id];

    mask = 0x1 << irq_id ;
    //* Disable the interrupt on the interrupt controller
    pAic->AIC_IDCR = mask ;
    //* Save the interrupt handler routine pointer and the interrupt priority
    pAic->AIC_SVR[irq_id] = (unsigned int) newHandler ;
    //* Store the Source Mode Register
    pAic->AIC_SMR[irq_id] = src_type | priority  ;
    //* Clear the interrupt on the interrupt controller
    pAic->AIC_ICCR = mask ;

	return oldHandler;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_EnableIt
//* \brief Enable corresponding IT number
//*----------------------------------------------------------------------------
__inline void AT91F_AIC_EnableIt (
	AT91PS_AIC pAic,      // \arg pointer to the AIC registers
	unsigned int irq_id ) // \arg interrupt number to initialize
{
    //* Enable the interrupt on the interrupt controller
    pAic->AIC_IECR = 0x1 << irq_id ;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_DisableIt
//* \brief Disable corresponding IT number
//*----------------------------------------------------------------------------
__inline void AT91F_AIC_DisableIt (
	AT91PS_AIC pAic,      // \arg pointer to the AIC registers
	unsigned int irq_id ) // \arg interrupt number to initialize
{
    unsigned int mask = 0x1 << irq_id;
    //* Disable the interrupt on the interrupt controller
    pAic->AIC_IDCR = mask ;
    //* Clear the interrupt on the Interrupt Controller ( if one is pending )
    pAic->AIC_ICCR = mask ;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_ClearIt
//* \brief Clear corresponding IT number
//*----------------------------------------------------------------------------
__inline void AT91F_AIC_ClearIt (
	AT91PS_AIC pAic,     // \arg pointer to the AIC registers
	unsigned int irq_id) // \arg interrupt number to initialize
{
    //* Clear the interrupt on the Interrupt Controller ( if one is pending )
    pAic->AIC_ICCR = (0x1 << irq_id);
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_AcknowledgeIt
//* \brief Acknowledge corresponding IT number
//*----------------------------------------------------------------------------
__inline void AT91F_AIC_AcknowledgeIt (
	AT91PS_AIC pAic)     // \arg pointer to the AIC registers
{
    pAic->AIC_EOICR = pAic->AIC_EOICR;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_SetExceptionVector
//* \brief Configure vector handler
//*----------------------------------------------------------------------------
__inline unsigned int  AT91F_AIC_SetExceptionVector (
	unsigned int *pVector, // \arg pointer to the AIC registers
	void (*Handler) () )   // \arg Interrupt Handler
{
	unsigned int oldVector = *pVector;

	if ((unsigned int) Handler == (unsigned int) AT91C_AIC_BRANCH_OPCODE)
		*pVector = (unsigned int) AT91C_AIC_BRANCH_OPCODE;
	else
		*pVector = (((((unsigned int) Handler) - ((unsigned int) pVector) - 0x8) >> 2) & 0x00FFFFFF) | 0xEA000000;

	return oldVector;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_Trig
//* \brief Trig an IT
//*----------------------------------------------------------------------------
__inline unsigned int  AT91F_AIC_Trig (
	AT91PS_AIC pAic,     // \arg pointer to the AIC registers
	unsigned int irq_id) // \arg interrupt number
{
	pAic->AIC_ISCR = (0x1 << irq_id) ;
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_IsActive
//* \brief Test if an IT is active
//*----------------------------------------------------------------------------
__inline unsigned int  AT91F_AIC_IsActive (
	AT91PS_AIC pAic,     // \arg pointer to the AIC registers
	unsigned int irq_id) // \arg Interrupt Number
{
	return (pAic->AIC_ISR & (0x1 << irq_id));
}

//*----------------------------------------------------------------------------
//* \fn    AT91F_AIC_IsPending
//* \brief Test if an IT is pending
//*----------------------------------------------------------------------------