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关于C6713如何测量方波脉冲宽度

您好:

     我现在需要用C6713测量一个方波的脉冲,需要测出方波脉冲的宽度,并且对方波的脉冲数量进行计数,请问有没有相关的例程供参考下。

Shine:

c6713是一款很老的器件了,片上不带ecap接口。如果是新设计,可以考虑使用c6748,片上带ecap和pwm接口。
processors.wiki.ti.com/…/TMS320C6713_to_TMS320C6748_Migration_Guide

user4465613:

回复 Nancy Wang:

Dear Nancy Wang:

     我按照你的方法,在我买的一个测试板上进行测试,使用测试板厂家提供的例程,发生如下错误

     

我的编译器版本是如下信息

c6x.h的内容如下

/*****************************************************************************//* C6X.H v4.32 *//* Copyright (c) 1996-2002 Texas Instruments Incorporated *//*****************************************************************************/

#ifdef __cplusplusextern "C"{#endif /* __cplusplus */

unsigned _extu (unsigned, unsigned, unsigned);int _ext (int, unsigned, unsigned);unsigned _set (unsigned, unsigned, unsigned);unsigned _clr (unsigned, unsigned, unsigned);unsigned _extur (unsigned, int);int _extr (int, int);unsigned _setr (unsigned, int);unsigned _clrr (unsigned, int);int _sadd (int, int);long _lsadd (int, long);int _ssub (int, int);long _lssub (int, long);int _sshl (int, unsigned);int _add2 (int, int);int _sub2 (int, int);unsigned _subc (unsigned, unsigned);unsigned _lmbd (unsigned, unsigned);int _abs (int);long _labs (long);int _sat (long);unsigned _norm (int);unsigned _lnorm (long);int _smpy (int, int);int _smpyhl (int, int);int _smpylh (int, int);int _smpyh (int, int);int _mpy (int, int);int _mpyus (unsigned, int);int _mpysu (int, unsigned);unsigned _mpyu (unsigned, unsigned);int _mpyhl (int, int);int _mpyhuls (unsigned, int);int _mpyhslu (int, unsigned);unsigned _mpyhlu (unsigned, unsigned);int _mpylh (int, int);int _mpyluhs (unsigned, int);int _mpylshu (int, unsigned);unsigned _mpylhu (unsigned, unsigned);int _mpyh (int, int);int _mpyhus (unsigned, int);int _mpyhsu (int, unsigned);unsigned _mpyhu (unsigned, unsigned);

#ifdef _TMS320C6700double _mpyid (int, int);int _spint (float);int _dpint (double);float _rcpsp (float);double _rcpdp (double);float _rsqrsp (float);double _rsqrdp (double);#endif

unsigned _hi(double); /* return the hi 32 bits of a double as an int */unsigned _lo(double); /* return the lo 23 bits of a double as an int */ double _itod(unsigned, unsigned); /* Create a double from 2 ints */float _itof(unsigned); /* Create a float from an int */unsigned _ftoi(float); /* Create an int from a float */

#ifdef _TMS320C6400int _add4 (int, int);int _avg2 (int, int);unsigned _avgu4 (unsigned, unsigned);int _cmpeq2 (int, int);int _cmpeq4 (int, int);int _cmpgt2 (int, int);unsigned _cmpgtu4 (unsigned, unsigned);int _dotp2 (int, int);int _dotpn2 (int, int);int _dotpnrsu2 (int, unsigned);int _dotprsu2 (int, unsigned);int _dotpsu4 (int, unsigned);unsigned _dotpu4 (unsigned, unsigned);int _gmpy4 (int, int);long _ldotp2 (int, int);int _max2 (int, int);unsigned _maxu4 (unsigned, unsigned);int _min2 (int, int);unsigned _minu4 (unsigned, unsigned);double _mpy2 (int, int);double _mpyhi (int, int);int _mpyhir (int, int);double _mpyli (int, int);int _mpylir (int, int);double _mpysu4 (int, unsigned);double _mpyu4 (unsigned, unsigned);unsigned _pack2 (unsigned, unsigned);unsigned _packh2 (unsigned, unsigned);unsigned _packh4 (unsigned, unsigned);unsigned _packhl2 (unsigned, unsigned);unsigned _packl4 (unsigned, unsigned);unsigned _packlh2 (unsigned, unsigned);unsigned _rotl (unsigned, unsigned);int _sadd2 (int, int);unsigned _saddu4 (unsigned, unsigned);int _saddus2 (unsigned, int);unsigned _shlmb (unsigned, unsigned);int _shr2 (int, unsigned);unsigned _shrmb (unsigned, unsigned);unsigned _shru2 (unsigned, unsigned);double _smpy2 (int, int);int _spack2 (int, int);unsigned _spacku4 (int, int);int _sshvl (int, int);int _sshvr (int, int);int _sub4 (int, int);int _subabs4 (int, int); int _abs2 (int);unsigned _bitc4 (unsigned);unsigned _bitr (unsigned);unsigned _deal (unsigned);int _mvd (int);unsigned _shfl (unsigned);unsigned _swap4 (unsigned);unsigned _unpkhu4 (unsigned);unsigned _unpklu4 (unsigned);unsigned _xpnd2 (unsigned);unsigned _xpnd4 (unsigned);#endif

extern __cregister volatile unsigned int AMR;extern __cregister volatile unsigned int CSR;extern __cregister volatile unsigned int IFR;extern __cregister volatile unsigned int ISR;extern __cregister volatile unsigned int ICR;extern __cregister volatile unsigned int IER;extern __cregister volatile unsigned int ISTP;extern __cregister volatile unsigned int IRP;extern __cregister volatile unsigned int NRP;

#ifdef _TMS320C6400extern __cregister volatile unsigned int GFPGFR;#endif

#ifdef _TMS320C6700extern __cregister volatile unsigned int FADCR;extern __cregister volatile unsigned int FAUCR;extern __cregister volatile unsigned int FMCR;#endif

#ifdef __cplusplus} /* extern "C" */#endif /* __cplusplus */

/*****************************************************************************//* SAVE_AMR – *//* Define a local 'volatile unsigned int' variable in your interrupt *//* routine. *//* When invoking this macro, pass that local variable to save the AMR. *//* *//* If you interrupted an assembly coded routine that may be using *//* circular addressing, and you interrupt into a C coded interrupt *//* service routine, you need to set the AMR to 0 for the C code and save *//* off the AMR register, so that it will have the correct value upon *//* leaving the C interrupt service routine and returning to the assembly *//* code. *//* *//* Add this routine immediately after your local variable definitions *//* and before the start of your C interrupt code. *//*****************************************************************************/#define SAVE_AMR(temp_AMR) \ do { \ temp_AMR = AMR; \ AMR = 0; \ } while (0)

/*****************************************************************************//* RESTORE_AMR – *//* When invoking this macro, pass the same local variable that was passed *//* to the SAVE_AMR macro. This macro will restore the AMR to the value *//* it had when interrupted out of the hand assembly routine. *//* *//* Add this macro immediately before exiting the C interrupt service *//* routine. */ /*****************************************************************************/#define RESTORE_AMR(temp_AMR) \ do { \ AMR = temp_AMR; \ } while (0)

/*****************************************************************************//* SAVE_SAT – *//* Define a local 'volatile unsigned int' variable in your interrupt *//* routine. *//* When invoking this macro, pass that local variable to save the SAT *//* bit. *//* *//* If you interrupted a routine that was performing saturated arithmetic *//* and the interrupt service routine is also performing saturated *//* arithmetic, then you must save and restore the SAT bit in your *//* interrupt service routine. *//* *//* Add this routine immediately after your local variable definitions *//* and before the start of your C interrupt code. *//*****************************************************************************/#define SAVE_SAT(temp_SAT) \ do { \ temp_SAT = _extu(CSR, 22, 31); \ } while (0)

/*****************************************************************************//* RESTORE_SAT – *//* When invoking this macro, pass the same local variable that was passed *//* to the SAVE_SAT macro. This macro will restore the SAT bit to the *//* value it had when your application was interrupted. *//* *//* Add this macro immediately before exiting the C interrupt service *//* routine. */ /*****************************************************************************/#define RESTORE_SAT(temp_SAT) \ do { \ CSR = _clr(CSR, 9, 9); \ temp_SAT = _sshl(temp_SAT, 31); \ } while (0)

程序源码 如下

DEC6713_GPIO.rar

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