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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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...
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...
Its a PCF8563P
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...
@ device pic16f870,WDT_OFF 'Watch Dog Timer Disabled
@ device pic16f870,PROTECT_OFF 'Code Protect Off
@ device pic16f870,XT_OSC 'Using External Oscillator
@...
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...
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
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?
Hi Melanie,
What company do you work for
Ohhh i see its triggered by hardware not software
Thank you Jerson for helping me understand
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...
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...
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...
Are there any downsides to a pc based oscilloscope as opossed to a benchtop oscilloscope?
Is there any examples written in picbasic pro, that you know of.
I don't understand how i work out, what the maximum frequency timer1 could capture from that data
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...
What do you mean?
and the 125khz is that the maximum frequency the 16f870 can capture?
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...
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...
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...
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...
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...
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...
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...