dsp28_mcbsp.c

在ccs调试通过的,TI公司TMS320C2812 dsp的测试程序：gpio

//
//      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;
	
	PieCtrl.PIEIER6.bit.INTx5 = 1;
	PieCtrl.PIEIER6.bit.INTx6 = 1;
	
	McbspRegs.SPCR1.bit.RRST = 0;
	McbspRegs.SPCR2.bit.XRST = 0;
	McbspRegs.SPCR2.bit.GRST = 0;
	
	McbspRegs.SPCR1.all = 0;
	McbspRegs.XCR1.all = 0x40;
	McbspRegs.XCR2.all = 0x01;
	McbspRegs.RCR1.all = 0x40;
	McbspRegs.RCR2.all = 0x01;
	McbspRegs.PCR1.all = 0x0A00;
	
	McbspRegs.SPCR2.bit.GRST = 1;
	
	McbspRegs.SPCR1.bit.RINTM=0;
	McbspRegs.SPCR2.bit.XINTM=0;	
	NOP;
	NOP;
	
	McbspRegs.SRGR1.all = 0xffff;
	McbspRegs.SRGR2.all = 0x2000;
	McbspRegs.SPCR1.bit.RRST = 1;
	McbspRegs.SPCR2.bit.XRST = 1;
	
	NOP;
	NOP;
}

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.
//===========================================================================