[khushi]

dear sir,

Ya i know but i have configured on Port P2.2.

 

[khushi]

sir

i have checked all connection and that r ok.

Tx Rx both working fine as i pressed the key from tx side, receiver led blink like chattering.

ZCD o/p connected to intrrupt 1 P3.3

HT12d 17 no pin is connected to P3.2

I m not geeting the triac pulse from microcontroller port 2^2.

i think so there is some mistake going in to the code.

Please help me

 

[khushi]

hi ghuran,

 

many congratulations.

 

every keypad routine checks key debounce so once u decrease  it time delay, it will not prints slow.

 

one more thing here in the program which u have posted is checking that if key is pressed continually it will print the no. until u release it.

 

other wise the program is upto date no more changes are required.

 

 

please check once again ghuran. 

[khushi]

hi ghuran,

 

In my previous post u did that minor changes only.

 

all the lcd function given in code which u have mentioned is correct.

 

Please see the below simulation which i have done, i think so u r suppose to missing to keep “resistor array”. i. e Pull up resistor.

 

b’coz Port P0 is open collector port so that it requires.

 

u do it this kind of arrangement it will  definetely work.

 

wysiwyg_imageupload:12117:

[khushi]

hi ghuran,

 

Please use port 0 for Data lines that is D0-D7.

 

I mean to say instead of  sfr lcd_data_pin=0xA0; use address 0x80.

 

it will work. u try this & let me know.

[khushi]

hi zammer,

 

First of all u need one X-or gate for comaring Frequency with reference i/p frequency.

 

See below i have drawn block diagram

 

wysiwyg_imageupload:12111:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

if any more doubt please feel to ask.

 

 

  

[khushi]

Hi Ajish,

 

Thanks for your Reply.

 

 

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