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Type: Posts; User: andre_teprom

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  1. Closed: Re: Why is it necessary to disable interrupts when loading transmit data into transmi

    An 'interrupt delay' should be negligible, according to best practices there should not have any routine with significant latency from inside interrupt vector, but as said above whithout details on...
  2. Closed: Re: PIC 16f877 with pump and solenoid running for long days. and watchdog

    The words solenoid and reset appear together quite often; carefully check the PCB layout looking for possible crosstalking traces, keep in mind that solenoids are devices that have high inductance,...
  3. Closed: Re: Sustitute LED by resistor ( or anything else)

    Why not replacing by some Diodes in series ?
  4. Closed: Re: What is the PCB pad function and name

    Faston terminals, as supposed; this type of connection should not be used in phenolite boards because after a certain amount of handling break the weld. and detach the copper track right below.
  5. Closed: Re: What is the PCB pad function and name

    Much of what you see in PCB layouts comes from personal styles, but in this particular case if there was any science behind perhaps the designer believed that by adding vias around the PAD that...
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    [SOLVED]Closed: Re: pic16f876 and 500 LEDs

    Without mentioning the color, it will not be possible to perform an adequate calculation. the forward drop voltage of a visible light standard PTH LED varies between 1.8 (red) and 3.3 (blue) volts.
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    Closed: Re: Time-invariant problem

    Seems like there is only particular case at which the above function could be time invariant would be if a(t) could elliminate ( sin(t) + cos(t) ) :



    Which is not valid at some values of t,...
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    Closed: Re: SquareWave in C language

    Correct me if I got it wrong, but what you want is not merely to generate a toggle and redirect to an output? Is the frequency fixed or variable? By the way, not mentioning what compiler, or what...
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    Closed: Re: Time-invariant problem

    Perhaps you should decompose x(t) and its complex conjugate x*(t) into their arbitrary Real and Imaginary parts aħjb and make the necessary algebraic manipulation to see what comes out.
  10. [SOLVED]Closed: Re: at commande with pic18f252 and ccs picc

    printf("AT+CREC=4,C:\User\ad.amr,0,90,0\r")

    Review escape characters needed whenever using the prinft() function.
    At a glance, at least each backslash (\) should be preceded by another one (\\).
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    Closed: Re: Altium Designer problem in safe-mode

    Since safe mode is in general resulted from any sort of crash in previous session, it is not in principle intended for operation use, the main objective is to raise the operating system by making...
  12. Closed: Re: Keil code generated by Proteus vs STM32cube

    If you select GCC compiler for both environments you would have some degree of compatibility, I would be surprised if there was no such configuration option on both development platforms.
  13. Closed: Re: can i use the atmega8 without an external clock?

    As usual, your threads lack elementary details that you are ALWAYS reminded to provide again and again. Just saying that it didn't work is a waste of time, yours and others; this is not a chat, the...
  14. Closed: Re: PIC16F877 interface with ds1307 ...RTC running 10 sec slow

    Again, there is no issue with real world components, OP is claiming inaccuracy of the code running on simulation environment, which do not work real time.
  15. Closed: Re: Please help me avoid a disaster with my first pcb

    Regardless if there is any issue at the PCB layout, I would thoroughly review the schematic diagram; at a glance we can note the lack of pull-up resistor at the DHT22 sensor, as well using a lot of...
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    Closed: Re: Eplan 2.7 Cross Reference problem

    The issue is unclear; do you want to cross reference what's after the terminal block, toward K2? If not, the cross reference labels look correct because you have defined a mounting location (F100)...
  17. Closed: Re: PIC16F877 interface with ds1307 ...RTC running 10 sec slow

    As said, regardless of whether the simulator exhibit the message "non-realtime simulation" or not (even because only Informations, not Warnings messages were displayed in your log), trust us;...
  18. Closed: Re: PIC16F877 interface with ds1307 ...RTC running 10 sec slow

    Congratulations, you just realized that there are no problems regarding to the original issue.



    No, you point out exactly the problem, if any.
  19. Closed: Re: PIC16F877 interface with ds1307 ...RTC running 10 sec slow

    You didn't mention before this was in a simulation environment; check messages on the log tab, or at status bar, it clearly states something like "simulation is not running in real time". I leave you...
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    Closed: Re: ST7036i and mikroc STUCK

    Ok, sorry for having overlooked this.

    BTW, seems like the function I2C1_Wr() already has the ack feature implicitly built in. Note that according to MikroC I2C online documentation, it is a...
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    Closed: Re: ST7036i and mikroc STUCK

    So what is the problem at all? It sounds like you ARE reading it. Since you allways get an ACK, shoulnd't you celebrate this ? If you want to force a NO ACK (NACK) in the sake of experimenting,...
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    Closed: Re: ST7036i and mikroc STUCK

    Ok, just to make sure you got the point: Since this routine is always executing the snippet below, we need to know what this variable ACKSTAT_bit is; the mapping of an I/O input, or a user-defined...
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    Closed: Re: ST7036i and mikroc STUCK

    In C language, unlike some script languages, every variable must be declared somewhere on code, and ACKSTAT_bit in the above snippet was not declared, you only read it in the ack() function. Anyway,...
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    Closed: Re: ST7036i and mikroc STUCK

    Did you really pay attention on the above reply, or at least spent any time to review the correct code before posting ? Regardless of the naming, both ACKSTAT or ACKSTAT_bit are within in the same...
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    Closed: Re: ST7036i and mikroc STUCK

    So far you have not shown the complete program, the ACKSTAT variable does not appear anywhere else but only being evaluated in both the if's above. If it is present only in the declaration with no...
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