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trouble with downloading hex files to 8051

Jack L

Hi

I am currently in the middle of a project with the 8051 and i download my hex files onto the uC via Atmel's Filp software.

For some reason today the flip software just stopped working, giving me 'Timerd out' everytime i try to download to the uC.

The programming secquence on the uC that i use is to press RST and /PSEN together, before releasing RST first then /PSEN.

ANy idea why it stopped working,
What voltage reading should i get on the /PSEN pin when its switch is pressed.
My circuit on the /PSEN pin is simply a 10K resistor followed by a push button switch which is then tied to ground.

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  • 0 in reply to erik malund

    same thing happend to me.
    i succedded downloading the program only once.
    i'm using the following command:

    -device ATOCDTARGET
    -hardware RS232
    -port COM9
    -baudrate 19200
    -ocd C51
    -operation
    memory 14 loadbuffer C:\AT89C51RE2\template\test.hex
    timeout 60
    erase F
    program
    verify
    wait

    all the above seems to PASS except the erase which
    give a timeout error

Reply
  • 0 in reply to erik malund

    same thing happend to me.
    i succedded downloading the program only once.
    i'm using the following command:

    -device ATOCDTARGET
    -hardware RS232
    -port COM9
    -baudrate 19200
    -ocd C51
    -operation
    memory 14 loadbuffer C:\AT89C51RE2\template\test.hex
    timeout 60
    erase F
    program
    verify
    wait

    all the above seems to PASS except the erase which
    give a timeout error

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