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Handy Firmware Revision trick

 
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john Goss
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Handy Firmware Revision trick
PostPosted: Sun Jan 26, 2003 7:20 pm     Reply with quote

In my code, I store a constant set of charactors near the very end of ROM memory that contains the current rev of code I am working on. When the program resets or turns on, it prints out my current firmware revision on the RS232 port.

I keep this at the top of main() so when I make a change to the code, I quickly update the rev. number too.
Code:

// Include header files for functions
#include <16f872.h>       // Register definitions for PIC16F872 microcontroller
#include <stdio.h>      // Standard I/O - provided by CCS
#include <stdlib.h>      // Standard library functions - provided by CCS
#include <string.h>      // String Functions - provided by CCS
#include <mod.h>      // Port Pin Declarations, Function Prototypes, global variables for this program

//-----------------------------------------------------------------------------
// Do CCS C-Compiler directives
//-----------------------------------------------------------------------------
#use delay(clock=3686400)
#fuses XT,NOWDT,NOPROTECT,NOPUT,NOBROWNOUT, NOLVP
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)       

//=====================================================
// !! UPDATE FIRMWARE REVISION HERE !!
//=====================================================
#org 0x07F0, 0x07FF
const char Revision[] = {"Rev 0.04"};
//=====================================================


//******************************************************
//*                                                                           *
//*   M   M   AAA   IIIII  N   N                                            *
//*   MM MM  A   A    I    NN  N                                            *
//*   M M M  AAAAA    I    N N N                                            *
//*   M   M  A   A    I    N  NN                                            *
//*   M   M  A   A  IIIII  N   N                                            *
//*                                                                           *
//*****************************************************
   void
main(void)
{



//---------- Occurs once on Reset or Power up ---------------------------------
   printf("Reset\n\r");   
   printf("Rev: \%S\n\r",Revision);

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Original Post ID: 11018
PCM programmer



Joined: 06 Sep 2003
Posts: 20142

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Re: Handy Firmware Revision trick
PostPosted: Mon Jan 27, 2003 1:49 pm     Reply with quote

Quote:
In my code, I store a constant set of charactors near the very end of ROM memory that contains the current rev of code I am working on. When the program resets or turns on, it prints out my current firmware revision on the RS232 port.

I keep this at the top of main() so when I make a change to the code, I quickly update the rev. number too.


//---------- Occurs once on Reset or Power up
printf("Reset\n\r");
printf("Rev: \%S\n\r",Revision);

That's a good idea. I came up with a variation that
would make it be more automatic. The code displays
the following text in the terminal window:

Build: 27-Jan-03 11:44:17

Code:

#include "c:\program files\picc\devices\16F877.h"
#fuses HS,NOWDT,NOPROTECT,PUT,BROWNOUT, NOLVP
#use Delay(clock=8000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS)

// I have the position backed off by 256 bytes from
// the end of ROM, because I'm using a bootloader there.
#org 0x1EE0, 0x1EEF
const char Build_Date[] = __DATE__;
#org 0x1EF0, 0x1EFF
const char Build_Time[] = __TIME__;
 
//=============================================

main()
{
printf("Build: \%s  \%s\n\r", Build_Date, Build_Time);

while(1);
}


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This message was ported from CCS's old forum
Original Post ID: 11046


Last edited by PCM programmer on Mon Sep 14, 2009 12:09 pm; edited 1 time in total
Neutone



Joined: 08 Sep 2003
Posts: 839
Location: Houston

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Re: Handy Firmware Revision trick
PostPosted: Mon Jan 27, 2003 4:50 pm     Reply with quote

Does this statement substitute the actual date of compile or do you have to enter it with each compile?

#org 0x1EE0, 0x1EEF const char Build_Date[] = __DATE__;
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This message was ported from CCS's old forum
Original Post ID: 11055
PCM programmer



Joined: 06 Sep 2003
Posts: 20142

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Re: Handy Firmware Revision trick
PostPosted: Mon Jan 27, 2003 4:57 pm     Reply with quote

Quote:
Does this statement substitute the actual date of compile or do you have to enter it with each compile?

#org 0x1EE0, 0x1EEF const char Build_Date[] = __DATE__;

The compiler gets the date from the operating system
(Win98, etc.) and inserts it as a string, in place of __DATE__.
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This message was ported from CCS's old forum
Original Post ID: 11056


Last edited by PCM programmer on Mon Sep 14, 2009 12:10 pm; edited 1 time in total
Sergio
Guest







Re: Handy Firmware Revision trick
PostPosted: Mon Jan 27, 2003 10:10 pm     Reply with quote

Clever.

Thanks.



:=---------------------------------------------------------
:=
:=That's a good idea. I came up with a variation that
:=would make it be more automatic. The code displays
:=the following text in the terminal window:
:=
:=Build: 27-Jan-03 11:44:17
:=
:=//-------------------------------------
:=#include "c:\program files\picc\devices\16F877.h"
:=#fuses HS,NOWDT,NOPROTECT,PUT,BROWNOUT, NOLVP
:=#use Delay(clock=8000000)
:=#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS)
:=
:=// I have the position backed off by 256 bytes from
:=// the end of ROM, because I'm using a bootloader there.
:=#org 0x1EE0, 0x1EEF
:=const char Build_Date[] = __DATE__;
:=#org 0x1EF0, 0x1EFF
:=const char Build_Time[] = __TIME__;
:=
:=//===============================================
:=
:=main()
:={
:=printf("Build: \%s \%s\n\r", Build_Date, Build_Time);
:=
:=while(1);
:=}
:=
:=
:=
:=
:=--</font>
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Original Post ID: 11063
adrian



Joined: 08 Sep 2003
Posts: 92
Location: Glasgow, UK

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Re: Handy Firmware Revision trick
PostPosted: Wed Jan 29, 2003 2:21 am     Reply with quote

:=:=
:=:=Does this statement substitute the actual date of compile or do you have to enter it with each compile?
:=:=
:=:=#org 0x1EE0, 0x1EEF const char Build_Date[] = __DATE__;
:=--------------------------------------------------------
:=
:=The compiler gets the date from the operating system
:=(Win98, etc.) and inserts it as a string, in place of __DATE__.

Which version of the compiler did __TIME__ get included? My lowly v3.061 will do __DATE__ but not __TIME__.

Also what should __DEVICE__ return? I get Error[27] Expression must evaluate to a constant.
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