EEPROM Variables (EE_Vars.pbp)

[brittons]

Hello Darrel, I see this line in the include file.

EE_start CON 0 ; Starting address for EE_Vars

Is this the starting address for your EEprom storage? I use the beginning addresses for specific things that may not be able to use your EE_Vars method. I actually want that area blocked out.

Can I mix and match your method with generic PBP read and write if I set the EE_Start address up higher. Say for an 18F part if I set it to 512 that would leave the bottom half for me to do what I want with and the top to experiment with your method.

Is this correct?

Thanks, Bob

[skimask]

Is this the starting address for your EEprom storage? I use the beginning addresses for specific things that may not be able to use your EE_Vars method. I actually want that area blocked out.

That's the way I read it.

Can I mix and match your method with generic PBP read and write if I set the EE_Start address up higher. Say for an 18F part if I set it to 512 that would leave the bottom half for me to do what I want with and the top to experiment with your method.

I don't see why not. Just be careful you don't start overwriting what you don't want to start overwriting...

[brittons]

Yes, I tried setting the starting address to 511 and the variables get stored there.

I haven't been able to get the variables to start out in the 'First Run' or default value unless I execute the EE_write_default command. Is there a way to create the 'First Run' sate of the vars without doing this? It seems when you create the var using EE_var the first time it creates the default value but I was only able to do it for the first var I experimented with. Subsequent attempts seemed to come up with 'FFFF' as the default value.

I have been reading through the EE_Var.pbp code but I have to admint my knowledge of macros is limited. Any recomendations on where I can get up to speed on macros?

[skimask]

Reinitialize the first run? You mean program a set of initial values into the eeprom?

[brittons]

Yes, I've been trying this:

Setpoint VAR BYTE
@ EE_var _Setpoint, BYTE, 150

RunTime VAR WORD
@ EE_var _RunTime, WORD, 1200

As shown in the docs but I look at Setpoint and Runtime using MicroCode studio ICD I get 'FF' for Setpoint and 'FFFF' for RunTime. The 'default value is not created when I execute the above.

If I then do this:
@ EE_write_default _Setpoint
@ EE_write_default _RunTime

The values become 150 and 1200 but only after I perform EE_write_default

I must be doing something wrong. Note as I said before I have set the start address to 511 but I do see the new values 150 an 1200 stored in EEprom up above 511 so I think this is working properly

[Darrel Taylor]

Hi Bob,

Is the program jumping over those statements?

Some people have a GOTO Start or something at the beginning, which doesn't allow the program to initialize the values.

Those lines (and the INCLUDE) must be allowed to execute on Power-up.
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[brittons]

Hi Darrel, this is what I have:

INCLUDE "Defines.bas"
INCLUDE "EE_Vars.PBP" 'Darrel Taylors EE_Vars program
INCLUDE "VarDefs.bas" ' These are my variable definitions
Goto start 'Jump over assembly routine
INCLUDE "AsmInt.bas" 'Assembly interrupt service routines
INCLUDE "200819_2.BAS" 'Model#, Serial# configuration
INCLUDE "LcdText.bas" 'Strings, lookup tables

SysDat VAR WORD[100] 'This is in the VarDefs.bas include file listed above

This is also in the VarDefs.bas INCLUDE FILE

msNLamps VAR SysDat[50]:@ EE_var _msNLamps, WORD, 2

SysDat is an Array the I created for looping through variables but this still seems to be ok. The 'start' label is after all of this. Shouldn't msNLamps be '2' when first programmed? I can set it to the default value if I do:

@ EE_write_default _msNlamps

after the start:

Is there a way to reset all vars to the default value as if this was the 'First Run' you talk about. As I understand it if I assign default values using the 'EE_var' command that the default value is written and the variable will always be powered up to that value unless you change it. I seem to be getting values of 'FFFF' for word on power up until I do a 'EE_write_default'

I know I've got something out of sorts but I'll keep trying. I also really like the EE_Vars program and thanks for sharing it. Starting to study macro's now too, but they don't really click yet.

Thanks, Bob

Shouldn't msNLamps be 2