www.pudn.com > DSP2812formotorcontrol.rar > DSP281x_PieCtrl.c

//########################################################################### 
// 
// FILE:	DSP281x_PieCtrl.c 
// 
// TITLE:	DSP281x Device PIE Control Register Initialization Functions. 
// 
//########################################################################### 
// 
//  Ver | dd mmm yyyy | Who  | Description of changes 
// =====|=============|======|=============================================== 
//  1.00| 11 Sep 2003 | L.H. | Changes since previous version (v.58 Alpha) 
//      |             |      | Added ENPIE = 0 to the IntPieCtrl function 
//      |             |      | Removed ENPIE = 1 from the IntPieCtrl function 
//      |             |      | Created EnableInterrupts function 
//########################################################################### 
 
#include "DSP281x_Device.h"     // DSP281x Headerfile Include File 
#include "DSPMotor_Head.h"   // DSP281x My Include File 
 
//--------------------------------------------------------------------------- 
// 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; 
 
 
}	 
 
//--------------------------------------------------------------------------- 
// 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. 
//===========================================================================