dsp28_mcbsp.c

DSP2812资料,包括原理图,测试程序,使用说明,[e-mail]

//
//      TMDX ALPHA RELEASE
//      Intended for product evaluation purposes
//
//###########################################################################
//
// FILE:	DSP28_McBSP.c
//
// TITLE:	DSP28 Deviec McBSP Initialization & 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"

//---------------------------------------------------------------------------
// InitMcbsp: 
//---------------------------------------------------------------------------
// This function initializes the McBSP to a known state.
//
void InitMcbsp(void)
{
/*
	EALLOW;
	GpioMuxRegs.GPFMUX.all = 0x3F00;
	EDIS;
*/	
	
/*	
	
	McbspRegs.SPCR2.all = 0x0000; 
	McbspRegs.SPCR1.all = 0x0000;
	
	McbspRegs.SPCR1.all = SPCR10_VAL;
	McbspRegs.SPCR2.all = SPCR20_VAL;
	McbspRegs.PCR1.all = PCR0_VAL;
	
	McbspRegs.XCR1.all = XCR10_VAL;
	McbspRegs.XCR2.all = XCR20_VAL;
	McbspRegs.RCR1.all = RCR10_VAL;
	McbspRegs.RCR2.all = RCR20_VAL;
	
	NOP;
	NOP;
	McbspRegs.DXR1.all = 0;
	
	McbspRegs.MFFINT.bit.RINT = 1;
	McbspRegs.SPCR1.bit.RRST = 1;
	McbspRegs.SPCR2.bit.XRST = 1;
	NOP;
	NOP;*/

}

void mcbsp_fifo_init()                                        
{

    McbspRegs.MFFTX.all=0x0000;
    McbspRegs.MFFRX.all=0x001F;
    McbspRegs.MFFCT.all=0x0;
    McbspRegs.MFFINT.all=0x0;
    McbspRegs.MFFST.all=0x0;  
// Bit changes as applicable  to each tests
    McbspRegs.MFFTX.bit.MFFENA=1;                        // Enable FIFO
    McbspRegs.MFFTX.bit.XRESET=1;                        // Enable Transmit channel
    McbspRegs.MFFRX.bit.RRESET=1;                        // Enable Receive channel
      
    
}  

unsigned int Mcbsp_TxRdy(void)
{
	if(McbspRegs.SPCR2.bit.XRDY == 1)
	{
		return(1);
	}
	else
	{
		return(0);
	}
}

unsigned int Mcbsp_RxRdy(void)
{
	if(McbspRegs.SPCR1.bit.RRDY == 1)
	{
		return(1);
	}
	else
	{
		return(0);
	}
}
	
//===========================================================================
// No more.
//===========================================================================