Problems with 16F876 on interrupts an WRITE / READ


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  1. #1
    Join Date
    Oct 2004
    Location
    Hangover, Germany
    Posts
    289

    Default Problems with 16F876 on interrupts an WRITE / READ

    Hello,

    as seen in the PBP-manual, there is a problem with interrupts while eeprom-writes, but there are no problems while any READ-statement.

    We have big problems here, and I thing, they are from interrupts while accessing the internal eeprom.
    Is there any problem known ?

    I always used:
    GIE=0:Write EE_Adr,Dummy:GIE=1
    to turn off any interrupts inside the routine...
    PBP 2.50C, MCS+ 3.0.0.5, MPLAB 8, MPASM 5.14, ASIX Presto, PoScope, mE mikroBasic V7.2, PICKIT2

  2. #2
    Join Date
    Mar 2003
    Location
    Commerce Michigan USA
    Posts
    1,166


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    Default

    BigWumpus, I use this method all the time when accessing internal "program" memory and when writing "external eeprom memory" but have never had a problem with reading or writing internal eeprom. I always have at least 3 interrupts enabled during program execution. I have used 16F and 18F series parts with out any problems. Are you sure you are writing the correct data to eeprom?

    Dave Purola,
    N8NTA

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