xuartps_sinit.c

自学ZedBoard：使用IP通过ARM PS访问FPGA（源代码）

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/**
*
* @file xuartps_sinit.c
*
* The implementation of the XUartPs driver's static initialzation
* functionality.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver   Who    Date	Changes
* ----- ------ -------- -----------------------------------------------
* 1.00  drg/jz 01/13/10 First Release
* </pre>
*
*****************************************************************************/

/***************************** Include Files ********************************/

#include "xstatus.h"
#include "xparameters.h"
#include "xuartps.h"

/************************** Constant Definitions ****************************/

/**************************** Type Definitions ******************************/

/***************** Macros (Inline Functions) Definitions ********************/

/************************** Variable Definitions ****************************/
extern XUartPs_Config XUartPs_ConfigTable[];

/************************** Function Prototypes *****************************/

/****************************************************************************/
/**
*
* Looks up the device configuration based on the unique device ID. The table
* contains the configuration info for each device in the system.
*
* @param	DeviceId contains the ID of the device
*
* @return	A pointer to the configuration structure or NULL if the
*		specified device is not in the system.
*
* @note		None.
*
******************************************************************************/
XUartPs_Config *XUartPs_LookupConfig(u16 DeviceId)
{
	XUartPs_Config *CfgPtr = NULL;

	int Index;

	for (Index = 0; Index < XPAR_XUARTPS_NUM_INSTANCES; Index++) {
		if (XUartPs_ConfigTable[Index].DeviceId == DeviceId) {
			CfgPtr = &XUartPs_ConfigTable[Index];
			break;
		}
	}

	return CfgPtr;
}