Can you also post up your code as well?
DTMF help
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1st May 2012 04:21 PM #1gagandeep
DTMF help
Can anyone please help me in writing code for DTMF MT 8870 with 8051
i am getting data from dtmf but 8051 is not reading data. i am attaching circuit diagramEDITED CKT..png
please help
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2nd May 2012 10:38 PM #2Jon Wilder
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3rd May 2012 06:05 AM Thread Starter #3gagandeep
thnx for reply
please help
here is code
org 00h
mov p2,#000h
mov p0,#0ffh
setb p3.7
start: mov a,p1
mov p2,a
cpl p3.7
jmp start;0
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3rd May 2012 09:35 PM #4Jon Wilder
OK...you'll need a bit more code than that to make this thing work. However, I need a bit more information as to what your project is supposed to do when all is said and done. Can you give me a description of what you are trying to make this circuit do?
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4th May 2012 05:35 AM Thread Starter #5gagandeep
i simply wants to switch on the relay connected on p2 ON & OFF by pressing 1 & 2 from mobile
data is changing on o/p of dtmf but P89v51rd2 is not reading it and not giving o/p on p20Last edited by gagandeep; 4th May 2012 at 05:37 AM.
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