stuck with bootloader for PIC 16f877a

Discussion in 'Embedded Systems and Microcontrollers' started by dark dragon, Aug 3, 2010.

  1. dark dragon

    Thread Starter Member

    Dec 11, 2008
    i don't know y but i tried all the bootloaders which are found in net but all failed..

    non of them detecting my PIC (using max232)
    i tried bootloader from microchipc 9.7 (
    but its display a msg
    searching for bootloader

    after tat no response

    i checked my circuit
    nothing is wrong (unfortunately my multimeter got repaired i just continuity of wire all good but cant check appropriate current rating i hope current cant be big problem)

    then i kept the led on the crystal but it is not glowing (I'M NEW TO HARD COMPONENTS OF PIC I'M JUST A STUDENT)

    i tried to download some other prog (after tat boot file fail using icprog106B)
    my led (but not bright as led on supply) on the o/p of max232 (+5)
    blink but if try to read tat from pic non of the led blink..

    also i read most previous threads of other ppl and solution but i have no idea on this prob.

    tell me

    1)what that its show is my pic dead..
    how i can i check it i bought a week before its new..
    is there any other way to check the pic

    2)y that boot loaders are not functioning

    3)wat can i do next to for boot programmer
    [​IMG] [​IMG]
  2. zxsa


    Jun 11, 2010
    Hey dragon,

    Probably there is nothing wrong with your PIC. I'd bet that your problem is because there is no software inside your PIC. The PC-side bootloader software still requires that there are some software already programmed in the PIC.

    Refer to the URL that you posted above. They have the following paragraph on that webpage:

    Look into that ...
  3. t06afre

    AAC Fanatic!

    May 11, 2009
  4. dark dragon

    Thread Starter Member

    Dec 11, 2008
    my problem is in loading on tat boot strap porg ly

    also i knw tat rs232 max 232 everything

    but i cant load my bootstrap prog, in the pic..
    what to da..
  5. t06afre

    AAC Fanatic!

    May 11, 2009
    The question is. "Which came first, the programmer or the bootloader?" :D Somehow you need to get a programmer which is compatible with your chip. Then use the hex file downloaded from the microchipc site, to program your chip. After this the bootloader will work(hopefully), and you will be able to download your code. Into your chip using the bootloader program