ads8364_pwm.c

PWM(可以查500筆的SPWM)由TI官網PWM範例改

//###########################################################################
//
// FILE:	DSP28_PieVect.c
//
// TITLE:	DSP28 Devices PIE Vector Table Initialization Functions.
//
//###########################################################################
//
//  Ver | dd mmm yyyy | Who  | Description of changes
// =====|=============|======|===============================================
//  1.00| 06 Dec 2002 | T.H. | SLAA163
//  
//###########################################################################
#include "DSP28_Device.h"

void PWM(void)
{
	EALLOW;
	// Enable PWM pins
    GpioMuxRegs.GPAMUX.all = 0x003F; // EVA PWM 1-6  pins
	// GpioMuxRegs.GPBMUX.all = 0x00FF; // EVB PWM 7-12 pins
    EDIS;
    
// EVA Configure T1PWM, T2PWM, PWM1-PWM6 
// Step 1  Initalize the timers
	// Initalize EVA Timer1 
	EvaRegs.T1PR = 0x1D49;       // 2000h=8192d_Timer1 period
	EvaRegs.T1CMPR = 0x0000;     // Timer1 compare
	EvaRegs.T1CNT = 0x0000;      // Timer1 counter
    // TMODE = continuous up/down
	// Timer enable
	// Timer compare enable
	EvaRegs.T1CON.all = 0x9042;//<--TMODE = continuous up count,//0x8842;<--TMODE = continuous up/down count

// Step 2  Setup T1PWM and T2PWM
	// Drive T1/T2 PWM by compare logic
	EvaRegs.GPTCONA.all=0x0000;
	// Polarity of GP Timer 1 Compare = Active low
	EvaRegs.GPTCONA.all=0x0000;
	// Polarity of GP Timer 2 Compare = Active high
	EvaRegs.GPTCONA.bit.T2PIN = 2;

// Step 3 Enable compare for PWM1-PWM6
	EvaRegs.CMPR1 = 0x1000;//1000h=4096d
	EvaRegs.CMPR2 = 0x1000;//1000h=4096d
	EvaRegs.CMPR3 = 0x1000;//1000h=4096d
    
    EvaRegs.//EVAIMRA = 0x010E; //ENABLE T1UINT &CMP1,2,3INT
	EvaRegs.ACTRA.all = 0x0999; //