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memory usage

 
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Chibouraska



Joined: 11 May 2007
Posts: 57
Location: Montreal,Canada

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memory usage
PostPosted: Sat Oct 09, 2010 7:58 am     Reply with quote
Say I am printing on a 4x20 LCD, to fill up the screen with datum I do this:
Code:
sprintf(cBuf,"All of line one data",var,var,...);
lcd_puts(cBuf);
sprintf(cBuf,"All of line two data",var,var,...);
lcd_puts(cBuf);
sprintf(cBuf,"All of line three data",var,var,...);
lcd_puts(cBuf);
sprintf(cBuf,"All of line four data",var,var,...);
lcd_puts(cBuf);

would it be better to use a different buffer for each line:

Code:
sprintf(cBuf1,"All of line one data",var,var,...);
lcd_puts(cBuf1);
sprintf(cBuf2,"All of line two data",var,var,...);
lcd_puts(cBuf2);
sprintf(cBuf3,"All of line three data",var,var,...);
lcd_puts(cBuf3);
sprintf(cBuf4,"All of line four data",var,var,...);
lcd_puts(cBuf4);

How many time practically can RAM cells be written to? Some person say
infinite but I don't think so. Anybody could shed light on this

AC
--------------
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Sat Oct 09, 2010 1:11 pm     Reply with quote
Please don't start a new thread on each sprintf question. Add all new
questions to your existing sprintf thread. This will keep the forum more
organized. The answers will be easier to find when people search the
archives in the future.

Regarding your question about RAM endurance, see page 3 of this
Microchip brochure on their RAM products. They say SRAM has infinite
endurance.
http://ww1.microchip.com/downloads/en/DeviceDoc/22239a.pdf

If you need more documentation on the endurance of PIC ram memory,
you should email Microchip tech support.
Chibouraska



Joined: 11 May 2007
Posts: 57
Location: Montreal,Canada

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PostPosted: Sat Oct 09, 2010 8:13 pm     Reply with quote
Ok great i understand and this is not really a programming question (RAM memory endurance) but thanks for your reply anyway.

AC
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