PWM 向上计数无波形输出

TI大牛帮忙看一下原因吧？？跪求

您好 Igor An
已经按你说的更改了但是还无法观察到波形。

PWM IO初始化
void InitEPwm7Gpio(void)
{
EALLOW;
/* Disable internal pull-up for the selected output pins
for reduced power consumption */
// Pull-ups can be enabled or disabled by the user.
// This will enable the pullups for the specified pins.
// Comment out other unwanted lines.

GpioCtrlRegs.GPAPUD.bit.GPIO30 = 1; // Disable pull-up on GPIO30 (EPWM7A)
// GpioCtrlRegs.GPBPUD.bit.GPIO40 = 1; // Disable pull-up on GPIO40 (EPWM7A)
// GpioCtrlRegs.GPBPUD.bit.GPIO58 = 1; // Disable pull-up on GPIO58 (EPWM7A)

// GpioCtrlRegs.GPBPUD.bit.GPIO41 = 1; // Disable pull-up on GPIO41 (EPWM7B)
// GpioCtrlRegs.GPBPUD.bit.GPIO44 = 1; // Disable pull-up on GPIO44 (EPWM7B)

/* Configure EPWM-7 pins using GPIO regs*/
// This specifies which of the possible GPIO pins will be EPWM7 functional pins.
// Comment out other unwanted lines.

GpioCtrlRegs.GPAMUX2.bit.GPIO30 = 3; // Configure GPIO30 as EPWM7A
// GpioCtrlRegs.GPBMUX1.bit.GPIO40 = 1; // Configure GPIO40 as EPWM7A
// GpioCtrlRegs.GPBMUX2.bit.GPIO58 = 3; // Configure GPIO58 as EPWM7A

// GpioCtrlRegs.GPBMUX1.bit.GPIO41 = 1; // Configure GPIO41 as EPWM7B
// GpioCtrlRegs.GPBMUX1.bit.GPIO44 = 3; // Configure GPIO44 as EPWM7B

EDIS;
}


PWm初始化更改为
void InitEPwm7Example()
{

EPwm7Regs.TBPRD = 1000; // Set timer period 6000 408
EPwm7Regs.TBPHS.half.TBPHS = 0x0000; // Phase is 0
EPwm7Regs.TBCTR = 0x0000; // Clear counter

// Setup TBCLK
EPwm7Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP; // Count up
EPwm7Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm7Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1; // Clock ratio to SYSCLKOUT
EPwm7Regs.TBCTL.bit.CLKDIV = TB_DIV1; // TB_DIV4 = 0x02
EPwm7Regs.TBCTL.bit.PRDLD = TB_SHADOW;
EPwm7Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;
EPwm7Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW; // Load registers every ZERO
// EPwm7Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
EPwm7Regs.CMPCTL.bit.LOADAMODE = CC_CTR_ZERO;
// EPwm7Regs.CMPCTL.bit.LOADBMODE = CC_CTR_ZERO;

// Setup compare
EPwm7Regs.CMPA.half.CMPA = 500; //3000

// Set actions
// EPwm7Regs.AQCTLA.bit.CAU = AQ_SET; // Set PWM1A on CAU
EPwm7Regs.AQCTLA.bit.CAD = AQ_SET; // Clear PWM1A on CAD
EPwm7Regs.AQCTLA.bit.ZRO = AQ_CLEAR;

// EPwm7Regs.AQCTLB.bit.CAU = AQ_CLEAR; // Clear PWM1B on CAU
// EPwm7Regs.AQCTLB.bit.CAD = AQ_SET; // Set PWM1B on CAD

// Active Low PWMs - Setup Deadband
// EPwm1Regs.DBCTL.bit.OUT_MODE = DB_FULL_ENABLE;
// EPwm1Regs.DBCTL.bit.POLSEL = DB_ACTV_HIC;
// EPwm1Regs.DBCTL.bit.IN_MODE = DBA_ALL;
// EPwm1Regs.DBRED = EPWM1_MIN_DB;
// EPwm1Regs.DBFED = EPWM1_MIN_DB;
// EPwm1_DB_Direction = DB_UP;

// Interrupt where we will change the Deadband
EPwm7Regs.ETSEL.bit.INTSEL = ET_CTRU_CMPA; // Select INT on Zero event
EPwm7Regs.ETSEL.bit.INTEN = 1; // Enable INT
EPwm7Regs.ETPS.bit.INTPRD = ET_1ST; // Generate INT on 3rd event




// EPwm1Regs.ETSEL.bit.SOCAEN = 1; // Enable SOC on A group
// EPwm1Regs.ETSEL.bit.SOCASEL = 3; // Select SOC from CMPA on upcount
// EPwm1Regs.ETPS.bit.SOCAPRD = 1; // Generate pulse on 1st event
}
还是无法输出波形？这个是啥原因造成的呢？

已经解决了，谢谢你的回复

我想问一下，现在设置的PWM是向上计数的，中断配置如下
EPwm7Regs.ETSEL.bit.INTSEL = ET_CTRU_CMPA; // Select INT on Zero event
EPwm7Regs.ETSEL.bit.INTEN = 1; // Enable INT
EPwm7Regs.ETPS.bit.INTPRD = ET_1ST; // Generate INT on 3rd event

中断里面有一个IO翻转，但是测得IO频率是PWM频率的一半，这个是什么原因造成的呢？？？