dsp28_ev.c

来自「TMS320F2812DSP的PWM模块的程序」· C语言 代码 · 共 48 行

//
//      TMDX ALPHA RELEASE
//      Intended for product evaluation purposes
//
//###########################################################################
//
// FILE:	DSP28_Ev.c
//
// TITLE:	DSP28 Event Manager 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"

//---------------------------------------------------------------------------
// InitEv: 
//---------------------------------------------------------------------------
// This function initializes to a known state.
//
void InitEv(void)
{
	EALLOW;
	GpioMuxRegs.GPAMUX.all=0x00ff;	//PWM1 (O)	T1PWM_T1CMP (I) GPIOA6	
	//------McBSP------SPI---------------------
    GpioMuxRegs.GPFMUX.all = 0x0000;    //GPIOF0-3
    //----------------------------------------
    GpioMuxRegs.GPFDIR.bit.GPIOF14 = 1; //in   out
	EDIS;
	
	EvaRegs.GPTCONA.all = 0x0859;		/* gp timer control register 
	0 屏蔽定时器2比较输出 8  使能定时器1比较输出 */
	EvaRegs.T1CNT = 0;		/*Counter Register  timer1 count is zero */
	EvaRegs.T1CON.all = 0x1f42; //15M/128/65535=1.78Hz 
	EvaRegs.T1PR = 0x1fff;		//Period Register
	EvaRegs.T1CMPR = 0x0fff;	//Compare Register
}	
	
//===========================================================================
// No more.
//===========================================================================