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  1. Replies
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    I've directly given the registers the bcd values...

    I've directly given the registers the bcd values and monitored the bcd value of the register as it changes but it still increase's the tens of the hours by 4 when seconds=40, i have not addressed the...
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    hey, yer that is an old topic i kinda give up...

    hey,

    yer that is an old topic i kinda give up some time ago on the rtc.

    But i tought i would pick it back up and finally get my head around it

    when i posted that topic i didn't even no what...
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    Its a PCF8563P

    Its a PCF8563P
  4. Replies
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    does anyone have any ideas? when the seconds...

    does anyone have any ideas?


    when the seconds register is equal to 40, the "tens" of the hours register becomes 4 (e.g 09 then changed to 49 when seconds becomes 40) the hours "tens" then returns...
  5. Replies
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    @ device pic16f870,WDT_OFF 'Watch Dog...

    @ device pic16f870,WDT_OFF 'Watch Dog Timer Disabled
    @ device pic16f870,PROTECT_OFF 'Code Protect Off
    @ device pic16f870,XT_OSC 'Using External Oscillator
    @...
  6. Replies
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    HI thanks that works great i'm using a real...

    HI thanks that works great

    i'm using a real time clock and the only issue i have now is that when seconds reaches 40 the hours increments to 40

    the hour register is only 6 bits long bits 6 and...
  7. Replies
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    Binary Coded Decimal

    How do i convert bcd values to decimal, and decimal to bcd.

    eg bcd :0010 0011 = 23

    how would i convert that to 23 in decimal
  8. Replies
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    Circuit Diagram Applications

    Hi,

    I'm after purchasing some software for circuit design

    I'm after something with an extensive part library and an easy to use interface.


    What applications do you use?
  9. Replies
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    Hi Melanie, What company do you work for

    Hi Melanie,

    What company do you work for
  10. Thread: Interrupts

    by -Dan-
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    7,587

    Ohhh i see its triggered by hardware not software...

    Ohhh i see its triggered by hardware not software

    Thank you Jerson for helping me understand
  11. Thread: Interrupts

    by -Dan-
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    Hi Joe, thanks i get the general idea now, but...

    Hi Joe,

    thanks i get the general idea now, but how does the pic know that the event which should trigger the interupt has happened if it isn't looking for it.

    in the little code example i...
  12. Thread: Interrupts

    by -Dan-
    Replies
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    7,587

    Thanks for your reply Wouldn't the...

    Thanks for your reply


    Wouldn't the microcontroller have to constantly keep looking for the event to trigger the interupt?

    and which part of that code tells you the interrupt is triggered by...
  13. Thread: Interrupts

    by -Dan-
    Replies
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    7,587

    Interrupts

    Hi,

    I'm trying to understand interrupts.

    What is the difference between an interrupt and just a gosub statement

    below is an example i found on the melabs website.

    what action triggers the...
  14. Replies
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    Are there any downsides to a pc based...

    Are there any downsides to a pc based oscilloscope as opossed to a benchtop oscilloscope?
  15. Replies
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    10,933

    Is there any examples written in picbasic pro,...

    Is there any examples written in picbasic pro, that you know of.
  16. Replies
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    I don't understand how i work out, what the...

    I don't understand how i work out, what the maximum frequency timer1 could capture from that data
  17. Replies
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    Hi Bruce, I've read that, but i don't totally...

    Hi Bruce,

    I've read that, but i don't totally understand it, thats why i wanted some help in getting started, i no timer1 would do what i need, but i don't no how to control timer1, i've never...
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    What do you mean? and the 125khz is that the...

    What do you mean?

    and the 125khz is that the maximum frequency the 16f870 can capture?
  19. Replies
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    See the below image ...

    See the below image

    http://hem.passagen.se/communication/pic/fct_sch.gif

    this is a project i found that does what i wanted, but it does not explain the programming side of capturing the...
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    I considered using count, but i do not no its...

    I considered using count, but i do not no its limitations what will it count up to?.

    I want to measure in the 88-200mhz range, i doubt the pic can support this kind of range so i have got an...
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    Timer1 - frequency measurement

    Hi,

    Has anyone got a sample program showing how to measure the frequency of an input, i want to measure the frequency of a transmitter.

    i'm using a pic16f870, i've been reading the information...
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    Hi thanks for the the pics ^ i found the...

    Hi thanks for the the pics ^

    i found the problem the adaptor seemed ok so i looked at the programmer and found that for some mad reason the 10 pin header on my programmer is not oriented...
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    ive just noticed something about the ribbon cable...

    ive just noticed something about the ribbon cable

    forgive my crude drawings here mspaint was a quick option.

    This is how my ribbon cable is :

    <img...
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    HI Darrel i'm using the 16f870, ive connected...

    HI Darrel

    i'm using the 16f870, ive connected the ribbon cable and inserted the pic in to the adaptor as in the attatched diagram.

    i have done a continuity test on the ribbon cable, and all...
  25. Replies
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    the ribbon cable is on the right 10 pin header ...

    the ribbon cable is on the right 10 pin header

    pic is in the zif socket correctly

    contacted melabs and they said the led should not come on when i connect the adaptor

    they said its probably...
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