求助：TMS570 NHET 如何利用HAL Code Generatr 实现输入捕捉程序？？

/* USER CODE BEGIN (0) */

#include "rti.h" #include "gio.h"

 #include "het.h"

 #include "sci.h"

 /* USER CODE END */

/* Include Files */

#include "sys_common.h"

#include "system.h"

/* USER CODE BEGIN (1) */

/* USER CODE END */

/** @fn void main(void) *   @brief Application main function *   @note This function is empty by default. * *   This function is called after startup. *   The user can use this function to implement the application. */

/* USER CODE BEGIN (2) */ /* USER CODE END */

void main(void) {

/* USER CODE BEGIN (3) */

 hetSIGNAL_t  CAP;  

unsigned char a,b,c;

gioInit();  

rtiInit();  

hetInit();  

sciInit();

  rtiEnableNotification(rtiNOTIFICATION_COMPARE0);

 rtiEnableNotification(rtiNOTIFICATION_COMPARE1);

 rtiEnableNotification(rtiNOTIFICATION_COMPARE2);  

rtiEnableNotification(rtiNOTIFICATION_COMPARE3);  

rtiStartCounter(rtiCOUNTER_BLOCK0);

  _enable_IRQ();//开启中断  

 sciSendByte(sciREG2, 0);

  CAP=capGetSignal(cap0);   

  a=(unsigned char)(CAP.duty);   

  sciSendByte(sciREG2, a);    

sciSendByte(sciREG2, 0);    

 b=(unsigned char)(CAP.period/256);    

c=(unsigned char)(CAP.period);

 sciSendByte(sciREG2, b);  

sciSendByte(sciREG2, c);  

sciSendByte(sciREG2, 0);

 while(1){

  //capGetSignal(cap0);  

             }

/* USER CODE END */

 }

附件是完整代码，请帮助查看一下，

我想测量输入信号的频率，希望您能帮助提出解决意见。或者提供个例程。