EPWM初学笔记

时钟

 PCLKCR0

 PCLKCR1

EPWM总体预览

三部分就可以简单的使用EPWM

时基模块，比较模块，动作限定模块

时基模块

TBCTL时基控制寄存器

TBCTR计数寄存器

 TBPHS相位寄存器

TBPRD周期寄存器

 

比较模块

CMPCTL比较控制寄存器

影子模式，加载模式

 CMPA比较寄存器A

 

 

动作限定模块

动作限定A和B控制寄存器都是一样

程序

/*
 * epwm.c
 *
 *  Created on: 2023年12月5日
 *      Author: Administrator
 */
#include"epwm.h"
void epwm_init(Uint16 zhouqi)
{
	EALLOW;
	SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;
	SysCtrlRegs.PCLKCR1.bit.EPWM6ENCLK = 1;
	EDIS;
	InitEPwm6Gpio();
	
	//时基控制寄存器配置
	EPwm6Regs.TBCTL.bit.SYNCOSEL = 0x03;//禁止EPWM_SYNCO
	EPwm6Regs.TBCTL.bit.PHSEN = 0;//禁止从相位寄存器 加载
	EPwm6Regs.TBCTL.bit.CTRMODE = 0;//向上计数模式
	EPwm6Regs.TBCTL.bit.CLKDIV = 0;//分频1
	EPwm6Regs.TBCTL.bit.HSPCLKDIV = 0;分频2

	//相位寄存器赋值
	EPwm6Regs.TBPHS.half.TBPHS = 0;


	EPwm6Regs.TBCTR = 0;//计数

	EPwm6Regs.TBPRD = zhouqi;//周期

	//配置比较控制寄存器
	EPwm6Regs.CMPCTL.bit.SHDWAMODE = 0;
	EPwm6Regs.CMPCTL.bit.SHDWBMODE = 0;
	EPwm6Regs.CMPCTL.bit.LOADAMODE = 0;
	EPwm6Regs.CMPCTL.bit.LOADBMODE = 0;


	EPwm6Regs.CMPA.half.CMPA = 0;//比较值
	EPwm6Regs.CMPB = 0;


	EPwm6Regs.AQCTLA.bit.CAU = 2;//输出高
	EPwm6Regs.AQCTLA.bit.ZRO = 1;//输出低

	EPwm6Regs.AQCTLB.bit.CAU = 2;//输出高
	EPwm6Regs.AQCTLB.bit.ZRO = 1;//输出低


	EPwm6Regs.ETSEL.bit.INTEN = 1;//中断使能
	EPwm6Regs.ETSEL.bit.INTSEL = 1;//计数器等于0时候产生

	EALLOW;
	SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;//同步
	EDIS;
}

void EPWM6_set_compara(Uint16 zhouqi,Uint16 zhanbi)
{

	EPwm6Regs.TBPRD = zhouqi;//周期
	EPwm6Regs.CMPA.half.CMPA = zhanbi;
	EPwm6Regs.CMPB = zhanbi;
}