ads8364_pwm.c

来自「本程序是关于f2812控制ads8364完成AD转换的原程序」· C语言 代码 · 共 60 行

//###########################################################################
//
// 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 = 0x0003; // 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 = 0x0010;       // 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;   


// 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 = 0x0008;
    EvaRegs.ACTRA.all = 0x0002;
	EvaRegs.DBTCONA.all = 0x0000; // Disable deadband
    EvaRegs.COMCONA.all = 0x8200;

    EvbRegs.ACTRB.all = 0x0006;
	EvbRegs.DBTCONB.all = 0x0000; // Disable deadband
    EvbRegs.COMCONB.all = 0xA600;

} 	


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