TMS570LC4357: 关于N2HET模块引脚的input buffer无法关闭的问题

你好，当引脚input buffer被禁用后，电平会是逻辑0.请检查下看是否是逻辑0。

经过测试，在input buffer按照table23-9的方式禁用后，HETDIN仍旧可以正常捕获外部数据，高低电平均可捕获到。

我咨询下资深工程师后回复您。

你好，能否发一下代码这边好测试一下？

通过配置引脚1对应的DIR=0，PULDIS=1，PULSEL=0禁用输入buffer，如图中的1，3。观察到DIN寄存器的值在变化，引脚1捕获的值为0或1，如上图2位置显示当前引脚1捕获的值就为1。

你好，最好还是将代码发上来我们这边测试一下。

//het指令程序源码
B0   CNT { next=B1,reg=A,max=4,data=0};
B1   ECMP { next=B2,hr_lr=LOW,en_pin_action=ON,cond_addr=B2,pin=10,action=PULSEHI,reg=A,data=1,hr_data=0x00};
B2   PCNT { hr_lr=LOW,next=B0,type=RISE2FALL,pin=1,control=ON,prv=OFF,data=0};
*****************************************************************************
//C语言代码
//het指令对应的结构体
static const hetINSTRUCTION_t HET_INIT0_PST[3] =
{
 /* B0_0 */
     {
         0x00002C20,
         0x00000004,
         0x00000000,
         0x00000000
     },

     /* B1_0 */
     {
         0x00004100,
         0x00404A18,
         0x00000080,
         0x00000000
     },

     /* B2_0 */
     {
         0x00000E61,
         0x04000000,
         0x00000000,
         0x00000000
     }
};
static const hetINSTRUCTION_t HET_INIT2_PST[2] =
{
 /* B0_0 */
  {
      0x00002C20,
      0x00000001,
      0x00000000,
      0x00000000
  },

  /* B1_0 */
  {
      0x00000100,
      0x00400018,
      0x000000DA,
      0x00000000
  }

};

//het初始化函数
/** @fn void hetInit(void)
*   @brief Initializes the het Driver
*
*   This function initializes the het 1 module.
*/
/* SourceId : HET_SourceId_001 */
/* DesignId : HET_DesignId_001 */
/* Requirements : HL_CONQ_HET_SR10 */
void hetInit(void)
{
    int i = 0x10000;
    /** @b initialize @b HET */

    /** - Set HET pins default output value */
    hetREG1->DOUT = (uint32)((uint32)0U << 31U)
                  | (uint32)((uint32)0U << 30U)
                  | (uint32)((uint32)0U << 29U)
                  | (uint32)((uint32)0U << 28U)
                  | (uint32)((uint32)0U << 27U)
                  | (uint32)((uint32)0U << 26U)
                  | (uint32)((uint32)0U << 25U)
                  | (uint32)((uint32)0U << 24U)
                  | (uint32)((uint32)0U << 23U)
                  | (uint32)((uint32)0U << 22U)
                  | (uint32)((uint32)0U << 21U)
                  | (uint32)((uint32)0U << 20U)
                  | (uint32)((uint32)0U << 19U)
                  | (uint32)((uint32)0U << 18U)
                  | (uint32)((uint32)0U << 17U)
                  | (uint32)((uint32)0U << 16U)
                  | (uint32)((uint32)0U << 15U)
                  | (uint32)((uint32)0U << 14U)
                  | (uint32)((uint32)0U << 13U)
                  | (uint32)((uint32)0U << 12U)
                  | (uint32)((uint32)0U << 11U)
                  | (uint32)((uint32)0U << 10U)
                  | (uint32)((uint32)0U << 9U)
                  | (uint32)((uint32)0U << 8U)
                  | (uint32)((uint32)0U << 7U)
                  | (uint32)((uint32)0U << 6U)
                  | (uint32)((uint32)0U << 5U)
                  | (uint32)((uint32)0U << 4U)
                  | (uint32)((uint32)0U << 3U)
                  | (uint32)((uint32)0U << 2U)
                  | (uint32)((uint32)0U << 1U)
                  | (uint32)((uint32)0U << 0U);

    /** - Set HET pins direction */
    hetREG1->DIR = (uint32) 0x00000000U
                 | (uint32) 0x00000000U
               //  | (uint32) 0x00000004U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000c00U
                // | (uint32) 0x00000400U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U;

    /** - Set HET pins open drain enable */
    hetREG1->PDR = (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U;

    /** - Set HET pins pullup/down enable */
    hetREG1->PULDIS = (uint32) 0x00000000U
                   | (uint32) 0x00000002U
                //    | (uint32) 0x02000000U
             //       | (uint32) 0x00040000U
              //      | (uint32) 0x00800000U
                //    | (uint32) 0x00080000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U
                    | (uint32) 0x00000000U;

    /** - Set HET pins pullup/down select */
    hetREG1->PSL = (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U;

    /** - Set HET pins high resolution share */
    hetREG1->HRSH = 0;
#if 0
            (uint32) 0x00008000U
                  | (uint32) 0x00004000U
                  | (uint32) 0x00002000U
                  | (uint32) 0x00001000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000000U
                  | (uint32) 0x00000008U
                  | (uint32) 0x00000004U
          //        | (uint32) 0x00000002U
                  | (uint32) 0x00000001U;
#endif
    /** - Set HET pins AND share */
    hetREG1->AND = (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
            //     | (uint32) 0x00000020U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
              //   | (uint32) 0x00000002U
                 | (uint32) 0x00000000U;

    /** - Set HET pins XOR share */
    hetREG1->XOR = (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
              //   | (uint32) 0x00000020U
            //     | (uint32) 0x00000022U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U;

/* USER CODE BEGIN (1) */
#if 0
    //loopback,pin10-11
    hetREG1->LBPSEL = (0x20U<<0U) //LBPSEL,1-enable loopback
                    | (0x20U<<16U); //LBPTYPE,0-digital,1-analog
    hetREG1->LBPDIR = (0xA<<16) //LBP Test enable key
                     | (0x20<<0U); //0:1->0,1:0->1
#endif
#if 0
    //loopback,pin0-1
    hetREG1->LBPSEL = (0x1U<<0U) //LBPSEL,1-enable loopback
                    | (0x1U<<16U); //LBPTYPE,0-digital,1-analog
    hetREG1->LBPDIR = (0xA<<16) //LBP Test enable key
                     | (0x0<<0U); //0:1->0,1:0->1
#endif

   // het_loopback_enable(hetREG1,10,1);
/* USER CODE END */

    /** - Setup prescaler values
    *     - Loop resolution prescaler
    *     - High resolution prescaler
    */
    hetREG1->PFR = (uint32)((uint32) 3U << 8U)
                | ((uint32)0U);


   /** - Parity control register
    *     - Enable/Disable Parity check
    */
    //hetREG1->PCR = (uint32) 0x00000005U;
    hetREG1->PCR = (uint32) 0x0000010AU;
    /** - Fill HET RAM with opcodes and Data */
    /*SAFETYMCUSW 94 S MR:11.1,11.2,11.4 <APPROVED> "HET RAM Fill from the table - Allowed as per MISRA rule 11.2" */
    /*SAFETYMCUSW 95 S MR:11.1,11.4 <APPROVED> "HET RAM Fill from the table - Allowed as per MISRA rule 11.2" */
    /*SAFETYMCUSW 95 S MR:11.1,11.4 <APPROVED> "HET RAM Fill from the table - Allowed as per MISRA rule 11.2" */


     // (void)memcpy((void *)hetRAM1, (const void *)het1PROGRAM, sizeof(het1PROGRAM));
    //SSYU
    (void)memcpy((void *)hetRAM1, (const void *)HET_INIT0_PST, sizeof(HET_INIT0_PST));


    /** - Setup interrupt priority level
    *     - PWM 0 end of duty  level
    *     - PWM 0 end of period level
    *     - PWM 1 end of duty  level
    *     - PWM 1 end of period level
    *     - PWM 2 end of duty  level
    *     - PWM 2 end of period level
    *     - PWM 3 end of duty  level
    *     - PWM 3 end of period level
    *     - PWM 4 end of duty  level
    *     - PWM 4 end of period level
    *     - PWM 5 end of duty  level
    *     - PWM 5 end of period level
    *     - PWM 6 end of duty  level
    *     - PWM 6 end of period level
    *     - PWM 7 end of duty  level
    *     - PWM 7 end of period level

    *     - CCU Edge Detection 0 level
    *     - CCU Edge Detection 1 level
    *     - CCU Edge Detection 2 level
    *     - CCU Edge Detection 3 level
    *     - CCU Edge Detection 4 level
    *     - CCU Edge Detection 5 level
    *     - CCU Edge Detection 6 level
    *     - CCU Edge Detection 7 level
    */
    hetREG1->PRY = (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U
                 | (uint32) 0x00000000U;

    /** - Enable interrupts
    *     - PWM 0 end of duty
    *     - PWM 0 end of period
    *     - PWM 1 end of duty
    *     - PWM 1 end of period
    *     - PWM 2 end of duty
    *     - PWM 2 end of period
    *     - PWM 3 end of duty
    *     - PWM 3 end of period
    *     - PWM 4 end of duty
    *     - PWM 4 end of period
    *     - PWM 5 end of duty
    *     - PWM 5 end of period
    *     - PWM 6 end of duty
    *     - PWM 6 end of period
    *     - PWM 7 end of duty
    *     - PWM 7 end of period
    *     - CCU Edge Detection 0
    *     - CCU Edge Detection 1
    *     - CCU Edge Detection 2
    *     - CCU Edge Detection 3
    *     - CCU Edge Detection 4
    *     - CCU Edge Detection 5
    *     - CCU Edge Detection 6
    *     - CCU Edge Detection 7
    */
    hetREG1->INTENAC = 0xFFFFFFFFU;
    hetREG1->INTENAS = (uint32) 0x00000001U
                     | (uint32) 0x00000002U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000010U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000080U
                     | (uint32) 0x00000100U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000400U
                     | (uint32) 0x00000800U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U
                     | (uint32) 0x00000000U;

    hetREG1->EXC1 = 1<<8;//Program Overflow Enable
   /** - Setup control register
    *     - Enable output buffers
    *     - Ignore software breakpoints
    *     - Master or Slave Clock Mode
    *     - Enable HET
    */
    hetREG1->GCR = ( 0x00000001U
                   | (uint32)((uint32)0U << 24U)
	               | (uint32)((uint32)1U << 16U) //1master or 0slave
                   | (0x00000000U));//0x00020000U

}

已向相关工程师跟进。

你好，抱歉回复晚了。

参考下下面这篇帖子：

(12) Input Buffer Disable on NHET - HalCoGen Default Is Disable - Different Behavior with Emulator Attached/Unattached - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

上帖中说没有仿真器，输入缓冲区会禁用我们提到的上述配置，而使用仿真器，输入缓冲区不会禁用。

所以你那边是如何测试的？

带调试器或者没有带调试器？

如果带调试器，能否去掉调试器再试试？