speed_pr.lst

TI的digital motor control lib的源代码。了解TI的编程规范

C:\TIC2XX\C2000\CGTOOLS\BIN\DSPA.EXE -q -v2xx -gs speed_pr.asm -o ..\obj\speed_pr.obj -l ..\temp\speed_pr.lst 

TMS320C1x/C2x/C2xx/C5x COFF Assembler Version 7.00  Tue May  6 12:41:11 2003
Copyright (c) 1987-1999  Texas Instruments Incorporated 
speed_pr.asm                                                         PAGE    1

       1            ;=====================================================================================
       2            ; File name:        SPEED_PR.ASM                      
       3            ;                    
       4            ; Originator:   Digital Control Systems Group
       5            ;                       Texas Instruments
       6            ;
       7            ; Description:                                 
       8            ; This file contains source for a speed calculation function.
       9            ;=====================================================================================
      10            ; History:
      11            ;-------------------------------------------------------------------------------------
      12            ; 9-15-2000     Release Rev 1.0
      13            ;================================================================================
      14            ; Applicability: F240,F241,C242,F243,F24xx.  (Peripheral Independant).
      15            ;================================================================================
      16            ; Routine Name: speed_prd                                Routine Type: C Callable
      17            ;
      18            ; Description:
      19            ;  
      20            ;  C prototype : int speed_prd(SPEED_MEAS *)
      21            ;================================================================================
      22            ;        The definition for the Speed Period Object is as follows:
      23            ;
      24            ; typedef struct {
      25            ;       int time_stamp_new;     /* Variable : New 'Timestamp' corresponding to a capture event  */
      26            ;       int time_stamp_old;     /* Variable : Old 'Timestamp' corresponding to a capture event  */
      27            ;       int time_stamp;                 /* Input : Current 'Timestamp' corresponding to a capture event  */
      28            ;       int shift;                      /* Parameter : For maximum accuracy of 32bit/16bit division */
      29            ;       int speed_scaler;               /* Parameter :  Scaler converting 1/N cycles to a Q15 speed  */
      30            ;       int speed_prd;                  /* Output : speed in per-unit                            */
      31            ;       int rpm_max;                    /* Parameter : Scaler converting Q15 speed to rpm (Q0)speed */
      32            ;       int speed_rpm;          /* Output : speed in r.p.m.                            */
      33            ;       int (*calc)();                  /* Pointer to the calulation function                   */
      34            ;       } SPEED_MEAS;                   /* Data type created                                   */
      35            ;
      36            ;================================================================================
      37            ;       Frame Usage Details:
      38            ;            |      a       |      b        |   c           d     
      39            ;____________|______________|_______________|_______________________
      40            ;       FR0  | event_period |               |
      41            ;       FR1  | speed_hi         |               |
      42            ;       FR2  | speed_lo     |               |
      43            ;       FR3  | speed_prd_max|               |
      44            ;       FR4  |   shift2     |               |
      45            ;================================================================================
      46                            .def        _speed_prd
      47            ;================================================================================
      48      000e  SHIFT_TOTAL             .set    14
      49            ;================================================================================
      50      0005  __speed_prd_framesize .set 0005h
      51            ;================================================================================
      52 0000       _speed_prd:            
      53                                                                                                                    ; Assume
      54 0000 8aa0          POPD    *+                                                                      ; Keep return address
TMS320C1x/C2x/C2xx/C5x COFF Assembler Version 7.00  Tue May  6 12:41:11 2003
Copyright (c) 1987-1999  Texas Instruments Incorporated 
speed_pr.asm                                                         PAGE    2

      55 0001 80a0          SAR     AR0,*+                                                          ; Keep old frame pointer (FP)
      56 0002 8180          SAR     AR1,*                                                           ; Keep old stack pointer (SP)
      57 0003 b005          LARK    AR0,__speed_prd_framesize                       ; Load AR0 with frame size      
      58 0004 00e8          LAR     AR0,*0+,AR0                                                     ; AR0->FP0 (new FP), ARP=AR0
      59                            
      60            ;=================================================================================
      61 0005 7c03                  SBRK    #3              ; ARP=AR0, AR0->FR0-3 (1st argument)            
      62            ;----------------------------------------------------------------------------------
      63 0006 0280                  LAR             AR2,*   ; ARP=AR0, AR0->time_stamp_new, AR2->time_stamp_new
      64            ;----------------------------------------------------------------------------------
      65 0007 7803                  ADRK    #3              ; ARP=AR0, AR0->FR0, AR2->time_stamp_new
      66            ;----------------------------------------------------------------------------------
      67 0008 8b8a                  MAR             *,AR2   ; ARP=AR2, AR0->FR0, AR2->time_stamp_new
      68            ;----------------------------------------------------------------------------------
      69 0009 be46                  CLRC    SXM             ; Turn sign extension mode off
      70                                                            ; ARP=AR2, AR0->FR0, AR2->time_stamp_new
      71            ;----------------------------------------------------------------------------------
      72 000a be42                  CLRC    OVM             ; Set overflow mode
      73                                                            ; ARP=AR2, AR0->FR0, AR2->time_stamp_new
      74            ;----------------------------------------------------------------------------------
      75 000b bf00                  SPM     0       ; Reset product mode
      76                                                    ; ARP=AR2, AR0->FR0, AR2->time_stamp_new
      77            ;----------------------------------------------------------------------------------
      78 000c 10a0                  LACC    *+              ; ACC = time_stamp_new
      79                                                            ; ARP=AR2, AR0->FR0, AR2->time_stamp_old
      80            ;----------------------------------------------------------------------------------
      81 000d 90a0                  SACL    *+              ; time_stamp_old = time_stamp_new
      82                                                            ; ARP=AR2, AR0->FR0, AR2->time_stamp
      83            ;----------------------------------------------------------------------------------
      84 000e 1080          LACC    *               ; ACC = time_stamp
      85                                                            ; ARP=AR2, AR0->FR0, AR2->time_stamp
      86            ;----------------------------------------------------------------------------------
      87 000f 7c02          SBRK    #2              ; ARP=AR2, AR0->FR0, AR2->time_stamp_new
      88            ;----------------------------------------------------------------------------------
      89 0010 90a0          SACL    *+              ; time_stamp_new = time_stamp
      90                                                            ; ARP=AR2, AR0->FR0, AR2->time_stamp_old
      91            ;----------------------------------------------------------------------------------
      92 0011 30a0          SUB     *+              ; ACC = time_stamp - time_stamp_old
      93                                                    ; ARP=AR2, AR0->FR0, AR2->time_stamp
      94            ;----------------------------------------------------------------------------------
      95 0012 8ba8                  MAR             *+,AR0  ; ARP=AR2, AR0->FR0, AR2->shift
      96            ;----------------------------------------------------------------------------------
      97 0013 e344                  BCND    NEG_DELTA, LT ; Branch to NEG_DELTA if ACC < 0 (allow "wrapping")
         0014 0018' 
      98                                                            ; ARP=AR0, AR0->FR0, AR2->shift 
      99            ;----------------------------------------------------------------------------------
     100 0015       POS_DELTA               ; ARP=AR0, AR0->FR0, AR2->shift
     101            ;----------------------------------------------------------------------------------
     102 0015 9080          SACL    *               ; FR0 = event_period = time_stamp - time_stamp_old
     103                                                    ; ARP=AR0, AR0->FR0, AR2->shift 
     104            ;----------------------------------------------------------------------------------
     105 0016 7980          B               CALC_SPEED ; ARP=AR0, AR0->FR0, AR2->shift
         0017 001b' 
     106            ;----------------------------------------------------------------------------------
TMS320C1x/C2x/C2xx/C5x COFF Assembler Version 7.00  Tue May  6 12:41:11 2003
Copyright (c) 1987-1999  Texas Instruments Incorporated 
speed_pr.asm                                                         PAGE    3

     107 0018       NEG_DELTA               ; ARP=AR0, AR0->FR0, AR2->shift
     108            ;----------------------------------------------------------------------------------
     109 0018 bf90          ADD             #07FFFh ; ACC = 7FFFh + time_stamp - time_stamp_old