16f687 - Where is the data stored?

[andywpg]

I am using a 16f687 for a project. The datasheet says it has 2048 words of flash program memory and 128 bytes of SRAM.

If I use the following commands to make an array:

BAR_PAT1  VAR BYTE[16]
ARRAYWRITE BAR_PAT1, [1,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0]

Which type of memory is the 16 bytes written to? Program or SRAM? I haven't been able to figure it out on my own, and I need to know
for another project.

Thanks,

Andy

[mackrackit]

Written to SRAM as a variable.
From the manual.

Space for each variable is automatically allocated in the microcontroller=s RAM by PBP.
...
Variable arrays can be created in a similar manner to variables.

[andywpg]

Written to SRAM as a variable.

That's what I was afraid of..........guess there's an I2C EEPROM in my future!

[Charlie]

That's what I was afraid of..........guess there's an I2C EEPROM in my future!

I'm curious how that might help. But if it does, would the onboard EEPROM (256 bytes) not be sufficient?

[andywpg]

I'm curious how that might help. But if it does, would the onboard EEPROM (256 bytes) not be sufficient?

I have a BUNCH of 16 character messages (25+) that are to be displayed on an LCD. A master sends a command to a receiver (via RF) to light certain LED's, beep a piezo, and display various messages on the two lines of the LCD.

My idea was to have the master send just a code indicating what message each line should display in the receiver, and have the receiver unit read the associated messages from the EEPROM and display it. Since that would involve having another part in each receiver (possibly 40 or more of them), I have since decided that the master will transmit the two lines of the message, so I will only have to use an external EEPROM in the master.

Hopefully, my rambling explains the situation sufficiently...

Andy

[rmteo]

Why not store the messages as constant strings in program (FLASH) memory?

[ScaleRobotics]

Here is a thread about embedding your strings into code space:
http://www.picbasic.co.uk/forum/showthread.php?t=1999

[andywpg]

Thanks All! That helped a lot.

I love this forum, there's always somebody who's smarter than me willing to help.