Internal Eeprom/flash , what are you doing ?

[Darrel Taylor]

Is there anyway i can make this work Darrel or Skimask ?

I think so.

Been looking through the 12F library, and it looks like the READ and WRITE commands still do the right thing. But there's no way (in PBP) to erase a block before writing.

This might work. It's a macro that will erase 1 block at a time using a Constant for the address.

To erase the first block (bytes 0-7), you can ...
@ EraseFlash 0

To erase the second block
@ EraseFlash 8

Put it right before the WRITE command.

And put this macro somewhere near the top of the program.

ASM
EraseFlash  macro Addr
  local EraseLoop
    MOVE?CB  (Addr & 0x38), EEADR
    BSF      EECON,FREE          ; SELECT ERASE
    BSF      EECON,WREN          ; ENABLE WRITES
    BSF      EECON,WR            ; INITITATE ERASE
EraseLoop 
    btfsc    EECON, WR           ; Wait for the erase to complete
    goto     EraseLoop
  endm
ENDASM

[ultiblade]

You're both absolutely right.

I forgot to mention I'm using Cree powerled's, that are driven by a supertex led driver. This driver uses a sense resistor to measure the current, if we influence the current ( by adding a resistor parallel to the sense resistor), we can influence the intensity of the powerled's.

Darrel, i'm going to try the erase macro immediately, will post my findings ....

Thanks Experts !

[ultiblade]

Hi Guys,

I have tried your code Darrel, and erasing the blocks before writing does the trick !!! Thank you !
Skimask, thank you for your quick replies and expert information !!



Best regards,

Ultiblade

[Darrel Taylor]

Woohoo!

Hope she's my prize.
<br>

[ultiblade]

[loud laughter]

I will ask her to contact you !

[/loud laughter]