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Variables

 
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gtx15



Joined: 19 May 2018
Posts: 27

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Variables
PostPosted: Sat Nov 28, 2020 5:46 am     Reply with quote
Is there a way to see where a certain variable is used through out my program?
For example a variable called "c". I just cant search for "c" because it also in comments.

Thanks.
temtronic



Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario

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PostPosted: Sat Nov 28, 2020 6:02 am     Reply with quote
Easy answer....
Give it a better name ?? I know, kinda obvious, usually variable names reflect(tell) what they are used for. Easy with modern lanugages...when I started variables were limited to 1 or 2 characters.

I have to admit I use short names. I can't type so naming something like 'remote_temperature_sensor_number_1_from_greenhouse' isn't a good idea !
gtx15



Joined: 19 May 2018
Posts: 27

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PostPosted: Sat Nov 28, 2020 7:19 am     Reply with quote
Found a way. If I comment out the declare line for that variable I get errors whenever that variable is used when compiling.
dyeatman



Joined: 06 Sep 2003
Posts: 1934
Location: Norman, OK

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PostPosted: Sat Nov 28, 2020 7:55 am     Reply with quote
You might try getting a C Indexer/Cross Ref program that will give you a
list of all the variables and their location/use. There are a number of free ones out there.

Below is example output from an xref program I wrote for my own use in
Delphi years ago called CCSList customized for CCS code:
Code:

***************************************************
            Cross Reference Listing for the CCS "C" file:
                 >>>>>> ocraff.c
***************************************************

Include File Processing Option Not Selected
Number of lines in this source file: 409

INCLUDES:
  #include <16F628.H>
 
FUSES LINE:
  #fuses  EC,PUT,WDT,NOPROTECT,MCLR,NOLVP,NOCPD

DEVICE LINES:
  #device *=16 ICD=TRUE
  #device *=16

PRIORITY LINE:
  #PRIORITY RDA, TIMER1

DEFINES:
  #define  START_Signal_In PIN_A0  //pin 17   /pin RA0
  #define  AFF_Power       PIN_A1  //pin 18   /pin RA3
  #define buffer_len  0x40 // 64 chars
  #DEFINE TIMER1START 21000 // ctr start value for 10ms timer
  #DEFINE FLASH   50  // 50 x 10 = 500ms flash time
  #define bkbhit (next_in!=next_out)
  #define LED_ON    1
  #define LED_OFF   0

#BIT DEFINES:
    #no bit defines found
#BYTE DEFINES:
    #no byte defines found

PROTOTYPES:
  void serial_isr();
  void process();
  byte gethexbyte(char digit);

INTERRUPT ROUTINES:
  #INT_TIMER1
  #INT_RDA

VARIABLES LISTING: (* indicates the declaration line in the Main file)
=====================================================
  cmd_buff: *101   ***** Not used ***** 
  aff_data_in: *103 ,274,277,291,327,329
  aff_idle: *103 ,198,275,285,313,337
  bad_packet: *103 ,286,317,322,331,340
  curr_cmd: *102 ,350,354
  c: *103 ,164,166
  CRC_IN: *103 ,298,300,301,308
  t: *103 ,149,154

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