12f675_fuse_about_to_blow!

[LEDave]

Mmm. Well I kind of think I know what I have to do, it's break the VAR WORD Total up into two BYTES, allocate them each a memory space B1 & B1+1 (from the prog below) WRITE the BYTES to the memory locations then READ them back.

        INCLUDE "modedefs.bas"          ' Include serial modes

SO      VAR		PORTC.6					' Define serial output pin

B1      VAR     BYTE					' Address variable
W2      VAR     WORD					' Data variable


mainloop:   

		For B1 = 0 To 12 step 2			' Step 2 because each word requires 2 bytes of memory
        	W2 = B1 + 1000          	' Add 1000 to address
        	Write B1, W2.HIGHBYTE		' Write high byte of word
        	Write B1+1, W2.LOWBYTE		' Write low byte of word to next address
		Next B1

		For B1 = 0 To 12 step 2			' Step 2 to get word size data
        	Read B1, W2.HIGHBYTE		' Read high byte
        	Read B1+1, W2.LOWBYTE		' Read low byte
        	SerOut SO,T2400,[#W2," ",10,13]	' Display the word data
		Next B1
		
        SerOut SO,T2400,[10,13,10,13] 	' Skip 2 Lines

        GoTo mainloop                       ' Forever

My reading of the program above is that B1 = 's ( 0,2,4,6,8,10,12) + 1000 this is then written and read from memory location B1 & B1+1 into WORD W2 am I close?

Dave

[mackrackit]

My reading of the program above is that B1 = 's ( 0,2,4,6,8,10,12) + 1000 this is then written and read from memory location B1 & B1+1 into WORD W2 am I close?

Sounds like you understand it. Have you tried it yet?

[LEDave]

Sounds like you understand it. Have you tried it yet?

I'm on it.......

[LEDave]

I modified it to run on my LCD and it counts from 1000 to 1012 by adding two, then does it all over again.

So the first loop is WRITING the count to memory and the second is READING and displaying from memory to the LCD. B1 being the high BITS of the BYTE that make up W2 and B1+1 the low bits of W2, is that right?

So to complete our 'mission' should I try and do the same and use a loop or assign BYTES to a WORD (if that makes sense).

Dave

[mackrackit]

I modified it to run on my LCD and it counts from 1000 to 1012 by adding two, then does it all over again.

So the first loop is WRITING the count to memory and the second is READING and displaying from memory to the LCD. B1 being the high BITS of the BYTE that make up W2 and B1+1 the low bits of W2, is that right?

Yup!

So to complete our 'mission' should I try and do the same and use a loop or assign BYTES to a WORD (if that makes sense).

Dave

????

You have the WORD size var holding the value of how many times the switch was pressed. Use the high byte low byte thing from above for writing every time the switch is pressed. Only need to read the EEPROM when the chip starts.

Something like that

[LEDave]

Something like that

I'll give it a go, not a 100% sure on this one but I'll give it go.

This is brilliant stuff though, cheers mackrackit.

Dave

[mackrackit]

Mission clarification

Power UP
Read EEPROM
Transfer value from EPROM to VAR

Press Button
VAR adds one to it's self
Display VAR on LCD
Write VAR to EEPROM
Wait for another Button press

This message will self destruct in.....