dsp2812piectrl.c

来自「TMS320F2812的bootloader源程序」· C语言 代码 · 共 74 行

//###########################################################################
// FileName:	DSP2812PieCtrl.c
//
// WrittenBy:	PangCheng Syokean LTD. Nanning GX 
//
// Date:		2005-7-14
//###########################################################################

#ifndef DSP281X_DEVICE_H
#include "DSP281x_Device.h"   
#endif   
void InitPieCtrl(void);
void EnableInterrupts();
//---------------------------------------------------------------------------
// Function:	InitPieCtrl: 
//---------------------------------------------------------------------------
// This function initializes the PIE control registers to a known state.
//
void InitPieCtrl(void)
{
    // Disable Interrupts at the CPU level:
    DINT;

    // Disable the PIE
    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;
	
}
//---------------------------------------------------------------------------
// Function: EnableInterrupts: 
//---------------------------------------------------------------------------
// This function enables the PIE module and CPU interrupts
//
void EnableInterrupts()
{
    // Enable the PIE
    PieCtrlRegs.PIECRTL.bit.ENPIE = 1;
	// Enables PIE to drive a pulse into the CPU 
	PieCtrlRegs.PIEACK.all = 0xFFFF;  

	// Enable Interrupts at the CPU level 
    EINT;
}
//===========================================================================
// No more.
//===========================================================================