dsp28_piectrl.c

DSP28X通訊程式

//###########################################################################
//
// FILE:	DSP28_PieCtrl.c
//
// TITLE:	DSP28 Device PIE Control Register Initialization Functions.
//
//###########################################################################

#include "DSP28_Device.h"

//---------------------------------------------------------------------------
// InitPieCtrl: 
//---------------------------------------------------------------------------
// This function initializes the PIE control registers to a known state.
//

interrupt void phantom_ISR(void);  


void InitPieCtrl(void)
{
// Disable and clear all CPU interrupts:
	DINT;
	IER = 0x0000;
	IFR = 0x0000;

// Initialise PIE
	// Disable PIE unit
	PieCtrlRegs.PIECRTL.bit.ENPIE = 0;
	
	// Clear all PIEIER registers:
	PieCtrlRegs.PIEIER1.all = 0;
	PieCtrlRegs.PIEIER2.all = 0;
	PieCtrlRegs.PIEIER3.all = 0;	
	PieCtrlRegs.PIEIER4.all = 0;
	PieCtrlRegs.PIEIER5.all = 0;
	PieCtrlRegs.PIEIER6.all = 0;
	PieCtrlRegs.PIEIER7.all = 0;
	PieCtrlRegs.PIEIER8.all = 0;
	PieCtrlRegs.PIEIER9.all = 0;
	PieCtrlRegs.PIEIER10.all = 0;
	PieCtrlRegs.PIEIER11.all = 0;
	PieCtrlRegs.PIEIER12.all = 0;

	// Clear all PIEIFR registers:
	PieCtrlRegs.PIEIFR1.all = 0;
	PieCtrlRegs.PIEIFR2.all = 0;
	PieCtrlRegs.PIEIFR3.all = 0;	
	PieCtrlRegs.PIEIFR4.all = 0;
	PieCtrlRegs.PIEIFR5.all = 0;
	PieCtrlRegs.PIEIFR6.all = 0;
	PieCtrlRegs.PIEIFR7.all = 0;
	PieCtrlRegs.PIEIFR8.all = 0;
	PieCtrlRegs.PIEIFR9.all = 0;
	PieCtrlRegs.PIEIFR10.all = 0;
	PieCtrlRegs.PIEIFR11.all = 0;
	PieCtrlRegs.PIEIFR12.all = 0;

	// Enable PIE:
	PieCtrlRegs.PIECRTL.bit.ENPIE = 1;
	PieCtrlRegs.PIEACK.all = 0xFFFF;



	EALLOW;	// This is needed to write to EALLOW protected registers
	PieVectTable.T1PINT = &phantom_ISR;
	EDIS;   // This is needed to disable write to EALLOW protected registers

// Enable PIE group 2 interrupt 4 for T1PINT
	PieCtrlRegs.PIEIER2.all = M_INT4;

	
}	

// PHANTOM
interrupt void phantom_ISR(void)          
{

}

//===========================================================================
// No more.
//===========================================================================