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data memory on PIC 16F506

 
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danyl9



Joined: 31 May 2012
Posts: 5
Location: Israel

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data memory on PIC 16F506
PostPosted: Thu May 31, 2012 9:26 am     Reply with quote
Hi,

I'm trying to use a PIC 16F506 which according to datasheet has 67 bytes Sram (page 2 on data sheet).
My compiler is giving 100% memory use and my .SYM file shows only 32bytes. (see below)
Code:

008.7   C1OUT
00B.7   C2OUT
00D     @SCRATCH
00E     @SCRATCH
00E     _RETURN_
00F     @SCRATCH
010     @SCRATCH
011     @TRIS_B
012     @TRIS_C
013-014 PulseLength
015     Res
016     counter_no_mov
017     vib_count
018     FSM
019.0   ThermSafety
019.1   mov_flag1
019.2   last_moving
019.3   Thermi_flag
019.4   switch_flag
01A     TriggerBounceCounter
01B     count_moving
01C     FSM_mov
01D     test
01E     main.@SCRATCH1
01E     thermi.@SCRATCH1
01E     RF_output_control.@SCRATCH1
01E     IsMovingOn.@SCRATCH1
01E     BlinkLeds.@SCRATCH1
01E     IsTriggerBtnPressed.@SCRATCH1
01E     PowerState.@SCRATCH1
01F     main.@SCRATCH2

Does someone have any idea why I can't use all 67 bytes?

Thanks in advance for any help,
Daniel.
danyl9



Joined: 31 May 2012
Posts: 5
Location: Israel

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I mean data memory on PIC 16F506
PostPosted: Thu May 31, 2012 9:28 am     Reply with quote
I mean: data memory on PIC 16F506
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu May 31, 2012 10:45 am     Reply with quote
Add the line shown below in bold. It tells the compiler to use all RAM
in 16F PICs:
Quote:

#include <16F506.h>
#device *=8
#fuses INTRC_IO, NOWDT
#use delay(clock = 4M)

Look in the #device section of the compiler manual:
http://www.ccsinfo.com/downloads/ccs_c_manual.pdf
danyl9



Joined: 31 May 2012
Posts: 5
Location: Israel

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PostPosted: Thu May 31, 2012 3:58 pm     Reply with quote
hi,

thanks very much for your input.
I added the following and its works!!:
#device PIC16F506
#device *=8
#nolist
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