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Hot!dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem

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LovellMusiclab
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2020/07/04 08:42:08 (permalink)
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dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem

Hey guys. 
Is there any obvious reasons or changes that the CE154 - ADC to DAC Loopback example needs in order to run in the dsPIC33FJ64MC802?
I can't get it to work.

I'm using a differential op amp at the output, but beyond the fact that the module seems on (3.3v) against the other DAC module (0v), nothing else happens.
I'm also seeing a pulse (drop) on the regulation (less than 0.5v). Wich could be perhaps the PIC shutting of?
 
Any help would be very much appreciated.

Thanks!
#1

5 Replies Related Threads

    MBedder
    Circuit breaker
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    Re: dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem 2020/07/04 10:11:37 (permalink)
    5 (2)
    42.
    #2
    W4GNS.
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    Re: dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem 2020/07/04 11:37:58 (permalink)
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    MBedder
    42.



    Great answer Ivan!  LoL: LoL
    #3
    MBedder
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    Re: dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem 2020/07/04 12:16:45 (permalink)
    3 (2)
    Thanks Jack! Get well soon! LoL
    #4
    LovellMusiclab
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    Re: dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem 2020/07/06 10:38:35 (permalink)
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    I added the 42 to my code... it wont compile anymore LoL: LoL hehehehe

    But now, seriously guys. Any hints on it? grin: grin
    #5
    du00000001
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    Re: dsPIC33FJ64MC802 CE154 - ADC DAC Loopback Problem 2020/07/06 10:47:13 (permalink)
    5 (1)
    LovellMusiclab
    I added the 42 to my code... it wont compile anymore LoL: LoL hehehehe

    But now, seriously guys. Any hints on it? grin: grin



     
    Hint #1: Provide all information that might be useful to analyze the issue.
    Hint #2: When having your own hardware: provide at least the schematics.
    Hint #3: We really hate having to guess !

    PEBKAC / EBKAC / POBCAK / PICNIC (eventually see en.wikipedia.org)
    #6
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