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关于ePWM波的相位TBPHS使用问题？

2015-03-09 分类：C2000™ 32位实时 MCU 阅读(290)

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Mak he：

补充：

     上图为PWM2的驱动波形，其中有个周期一直为低，是将EPwm2Regs.TBPHS.half.TBPHS = 745减1时的现象。

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Hank Zhao：

回复 Mak he:

你将TBPHS改为745减2时会不会出现上述现象？

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Mak he：

回复 Hank Zhao:

试了，也会出现，只要越过CMPA那个点，都会出现上述现象

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Hank Zhao：

回复 Mak he:

你把TBCTL的PHSDIR位改为1再试试。

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Mak he：

回复 Hank Zhao:

试了，将PHSDIR = TB_UP，就会在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值加1，就出现波形断掉情况，波形断掉减1时有半个周期异常为低，这时加1就有半个周期异常为高），在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值加1，就出现波形断掉情况）

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Hank Zhao：

回复 Mak he:

这是正常现象，在PHSDIR = TB_UP时，TBPHS的值如果比745大，counter计数器的值就会跳过745，所以会多半个周期为低。在PHSDIR = TB_DOWN时，TBPHS的值如果比745小，counter计数器同样会跳过745.

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Mak he：

回复 Hank Zhao:

有没有办法能解决这个问题，因为我要实时调整这个相位TBPHS，在调整的过程中，意味着有可能我要来回越过745这个点，频率还很高。

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

Mak he：

回复 Hank Zhao:

谢谢你的回答，估计只能想办法越过这个点了。

使用PWM1与PWM2两路ePWM，通过TBPHS调整PWM2与PWM1相位，在调整的过程中，会出现有两个点（CMPA点与CMPB点）出现驱动瞬间断掉的情况，即在EPwm2Regs.TBPHS.half.TBPHS = 745（再将该值减1，就出现下图波形断掉情况），同样在EPwm2Regs.TBPHS.half.TBPHS = 835（再将该值减1，就出现下图波形断掉情况）也一样；请问各位大神，这是那个寄存器配置有问题？

PWM1与PWM2初始化如下：

void InitEPwm1(void)
{

 EPwm1Regs.CMPA.half.CMPA = 835; 
 EPwm1Regs.CMPB = 745;    
 EPwm1Regs.TBPRD = 1580;

   EPwm1Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm1Regs.TBCTR = 0x0000;                      // Clear counter

   
   // Setup counter mode
   EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm1Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm1Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Master module
    EPwm1Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm1Regs.TBCTL.bit.SYNCOSEL = TB_CTR_ZERO; // Sync down-stream module

   // Setup shadowing
   EPwm1Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm1Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm1Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm1Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm1Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm1Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm1Regs.AQCTLB.bit.CBD = AQ_SET;

}

void InitEPwm2(void)
{

 EPwm2Regs.CMPA.half.CMPA = 835; 
 EPwm2Regs.CMPB = 745;    
 EPwm2Regs.TBPRD = 1580;
   // Setup TBCLK
   EPwm2Regs.TBPHS.half.TBPHS = 0x0000;           // Phase is 0
   EPwm2Regs.TBCTR = 0x0000;                      // Clear counter
    
   
   // Setup counter mode
   EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UPDOWN; // Count up
   EPwm2Regs.TBCTL.bit.HSPCLKDIV = TB_DIV1;       // Clock ratio to SYSCLKOUT
   EPwm2Regs.TBCTL.bit.CLKDIV = TB_DIV1;//0x0-1分频,TBCLK = SYSCLKOUT / (HSPCLKDIV × CLKDIV)

    EPwm2Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Slave module
    EPwm2Regs.TBCTL.bit.PRDLD = TB_SHADOW;
    EPwm2Regs.TBCTL.bit.SYNCOSEL = TB_SYNC_IN;//TB_SYNC_DISABLE; // sync flow-through

   // Setup shadowing
   EPwm2Regs.CMPCTL.bit.SHDWAMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.SHDWBMODE = CC_SHADOW;
   EPwm2Regs.CMPCTL.bit.LOADAMODE = CC_CTR_PRD;  // Load on Zero
   EPwm2Regs.CMPCTL.bit.LOADBMODE = CC_CTR_PRD;  

   // Action Qualifier SubModule Registers
   EPwm2Regs.AQCTLA.bit.CAU = AQ_SET;//AQ_CLEAR;
   EPwm2Regs.AQCTLA.bit.CAD = AQ_CLEAR;//AQ_SET;
   EPwm2Regs.AQCTLB.bit.CBU = AQ_CLEAR;
   EPwm2Regs.AQCTLB.bit.CBD = AQ_SET;
}

BEILI SHU：

回复 Mak he:

你好 我也碰到类似的问题了 请问一下你是怎么解决的？万分感谢

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