dsp28_xintf.c

单个表头的显示 运用了MAX7219驱动芯片

//
//      TMDX ALPHA RELEASE
//      Intended for product evaluation purposes
//
//###########################################################################
//
// FILE:	DSP28_Xintf.c
//
// TITLE:	DSP28 Device External Interface Init & Support Functions.
//
//###########################################################################
//
//  Ver | dd mmm yyyy | Who  | Description of changes
// =====|=============|======|===============================================
//  0.55| 06 May 2002 | L.H. | EzDSP Alpha Release
//  0.56| 20 May 2002 | L.H. | No change
//  0.57| 27 May 2002 | L.H. | No change
//###########################################################################

#include "DSP28_Device.h"

//---------------------------------------------------------------------------
// InitXINTF: 
//---------------------------------------------------------------------------
// This function initializes the External Interface to a known state.
//
void InitXintf(void)
{
    // All Zones:
    // Timing for all zones based on XTIMCLK = SYSCLKOUT 
    XintfRegs.XINTCNF2.bit.XTIMCLK = 0;
	XintfRegs.XINTCNF2.bit.CLKMODE = 1;
	XintfRegs.XINTCNF2.bit.CLKOFF = 1;
	XintfRegs.XINTCNF2.bit.WRBUFF = 3;
    
    // Zone 1:
	XintfRegs.XTIMING1.bit.X2TIMING = 0;
	XintfRegs.XTIMING1.bit.XSIZE = 3;
	XintfRegs.XTIMING1.bit.USEREADY = 0;
	XintfRegs.XTIMING1.bit.XRDLEAD = 3;
	XintfRegs.XTIMING1.bit.XRDACTIVE = 7;
	XintfRegs.XTIMING1.bit.XRDTRAIL = 3;
	XintfRegs.XTIMING1.bit.XWRLEAD = 3;
	XintfRegs.XTIMING1.bit.XWRACTIVE = 7;
	XintfRegs.XTIMING1.bit.XWRTRAIL = 3;
	
    XintfRegs.XBANK.bit.BANK = 1;
    XintfRegs.XBANK.bit.BCYC = 7; 
}	
	
//===========================================================================
// No more.
//===========================================================================