PWM.rar_EPWM_tms320f28338

#include "DSP2833x_Device.h" #include "DSP2833x_Examples.h" #define SCIB 1 #define SCIC 0 // Prototype statements for functions found within this file. int i; void main(void) { InitSysCtrl(); EALLOW; GpioCtrlRegs.GPADIR.bit.GPIO0=1; GpioCtrlRegs.GPADIR.bit.GPIO1=1; GpioCtrlRegs.GPADIR.bit.GPIO2=1; GpioCtrlRegs.GPADIR.bit.GPIO3=1; GpioCtrlRegs.GPADIR.bit.GPIO4=1; GpioCtrlRegs.GPADIR.bit.GPIO5=1; GpioCtrlRegs.GPADIR.bit.GPIO11=1; GpioCtrlRegs.GPAMUX1.bit.GPIO0=1; GpioCtrlRegs.GPAMUX1.bit.GPIO1=1; GpioCtrlRegs.GPAMUX1.bit.GPIO2=1; GpioCtrlRegs.GPAMUX1.bit.GPIO3=1; GpioCtrlRegs.GPAMUX1.bit.GPIO4=1; GpioCtrlRegs.GPAMUX1.bit.GPIO5=1; GpioCtrlRegs.GPAMUX1.bit.GPIO11=0; EDIS; /* GpioDataRegs.GPADAT.bit.GPIO1=0; EPwm1Regs.TBPRD=0XFFFF; EPwm1Regs.TBCTR=0X0000; EPwm1Regs.CMPA.all=0x7fff; EPwm1Regs.TBCTL.all=0X0032; EPwm1Regs.CMPCTL.all=0x0112; EPwm1Regs.AQCTLA.all=0x7fff; EPwm1Regs.AQSFRC.all=0x0080; EPwm1Regs.AQCSFRC.all=0x00002; EPwm1Regs.DBCTL.all=0x000c; EPwm1Regs.DBRED=0x0fff; EPwm1Regs.DBFED=0x0fff; EPwm1Regs.PCCTL.all=0x0000; EPwm1Regs.TZSEL.all=0xffff; EPwm1Regs.TZCTL.all=0x0001; */// EPWM Module 1 config EPwm1Regs.TBPRD = 450; // Period = 900 个TB时钟周期 EPwm1Regs.TBCTR=0; //计数器初始值为零 EPwm1Regs.TBPHS.all = 0; // 相位为零 EPwm1Regs.TBCTL.bit.CTRMODE = 0x2; // 增减模式 EPwm1Regs.TBCTL.bit.PHSEN = 0x1; // 相位计数器使能 EPwm1Regs.TBCTL.bit.PRDLD = 0x1; //计数值为零时不从影子寄存器取值 EPwm1Regs.TBCTL.bit.SYNCOSEL = 0x2; // 当等于周期寄存器时输出 EPwm1Regs.CMPCTL.bit.SHDWAMODE = 0;//公用一个时间基准 EPwm1Regs.CMPCTL.bit.SHDWBMODE = 0; EPwm1Regs.CMPCTL.bit.LOADAMODE = 0x2; // 等于周期值或者零时重装载 EPwm1Regs.CMPCTL.bit.LOADBMODE = 0x2; // 等于周期值或者零时重装载 EPwm1Regs.AQCTLA.bit.CAU =0x1; // set actions for EPWM1A EPwm1Regs.AQCTLA.bit.CAD =0x2; EPwm1Regs.DBCTL.bit.POLSEL = 0x2; //B取反逻辑 EPwm1Regs.DBCTL.bit.OUT_MODE=0x3;//输出B,A翻转 看原理图 EPwm1Regs.DBFED = 20; // FED = 20 TBCLKs //死区延时时间 上升沿和下降沿 EPwm1Regs.DBRED = 20; // RED = 20 TBCLKs EPwm2Regs.TBPRD=450; EPwm2Regs.TBCTR=0; EPwm2Regs.TBPHS.all=300; // Phase = 300/900 * 360 = 120 deg EPwm2Regs.TBCTL.bit.CTRMODE=2; EPwm2Regs.TBCTL.bit.SYNCOSEL=2; EPwm2Regs.TBCTL.bit.PHSEN=1; EPwm2Regs.TBCTL.bit.PRDLD=1; EPwm2Regs.CMPCTL.bit.LOADAMODE=2;// 等于周期值或者零时重装载 EPwm2Regs.CMPCTL.bit.LOADBMODE=2; EPwm2Regs.CMPCTL.bit.SHDWAMODE=0; EPwm2Regs.CMPCTL.bit.SHDWBMODE=0; EPwm2Regs.AQCTLA.bit.CAD=1; EPwm2Regs.AQCTLA.bit.CAU=2; EPwm2Regs.DBCTL.bit.POLSEL=2; EPwm2Regs.DBCTL.bit.OUT_MODE=3; EPwm2Regs.DBFED=20; EPwm2Regs.DBRED=20; EPwm3Regs.TBPRD=450; EPwm3Regs.TBCTR=0; EPwm3Regs.TBPHS.all=300; // Phase = 300/900 * 360 = 120 deg EPwm3Regs.TBCTL.bit.CTRMODE=2; EPwm3Regs.TBCTL.bit.SYNCOSEL=2; EPwm3Regs.TBCTL.bit.PHSEN=1; EPwm3Regs.TBCTL.bit.PRDLD=1; EPwm3Regs.CMPCTL.bit.LOADAMODE=2;// 等于周期值或者零时重装载 EPwm3Regs.CMPCTL.bit.LOADBMODE=2; EPwm3Regs.CMPCTL.bit.SHDWAMODE=0; EPwm3Regs.CMPCTL.bit.SHDWBMODE=0; EPwm3Regs.AQCTLA.bit.CAD=1; EPwm3Regs.AQCTLA.bit.CAU=2; EPwm3Regs.DBCTL.bit.POLSEL=2; EPwm3Regs.DBCTL.bit.OUT_MODE=3; EPwm3Regs.DBFED=20; EPwm3Regs.DBRED=20; EPwm1Regs.CMPA.half.CMPA = 285;// adjust duty for output EPWM1A EPwm2Regs.CMPA.half.CMPA = 285; EPwm3Regs.CMPA.half.CMPA = 285; GpioDataRegs.GPADAT.bit.GPIO11=1; i=0; for(;;) { ; } }