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digital clock using ds1307
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chandan
Tue Mar 27 2007, 07:16AM
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we hav burnt the code.joined the circuit.but the output is not coming.so please help us so that we can complete the project.we hav alerady checked the circuit connections,reset circuit and the crystal .
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Ajay
Wed Mar 28 2007, 03:13AM
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Please check the circuit again, Code is working as many people made it, so there must be something missing in your circuit. Check the connectivity of all the connections.
check all the ground and VCC connections etc. check for unconnected connections.
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vikthered
Mon May 07 2007, 06:52AM
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the code isnt workin..... connection are ok....
how to download the hex file?????
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Ajay
Mon May 07 2007, 09:17AM
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hex file is there in the archive. see the download section.
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vikthered
Mon May 07 2007, 09:46AM
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hey i've to submit my proj tomo....
i got the connections done.......
downloaded the hex file.....
lcd is showing black boxes... nothin else....
that guy who made the connection is sayin somethins wrong with the code....
pls help....otherwise im doomed
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Ajay
Mon May 07 2007, 11:51PM
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Brother there is nothing wrong with the code. I checked it. and there are many who checked it. if your LCD is showing black boxes that means its not initialized. check if the code is burnt properly and see if the connections are weak or dry soldered. its always better to solder the board yourself, instead of getting it soldered from someone else.
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 vikthered 
vikthered
Tue May 08 2007, 07:07AM
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thanks bro....
the thing is im an IT student..... I kow nothin bout solderin.....
some reason i cant figure out the lcd is showin only black boxes.....
i also asked the guy to connect the lcd and 8051 pins by wire and burnt a code to display a char on the lcd to check if its workin... same prob again....
dont know wat to do...
my sir postponed the submission date to thursday....
he asked me to atleast display somethin on the screen.. im not able to.....
lcd INITIALISATION....????
you mean this part...
" initial:mov a,#38h
acall command
mov a,#0ch
acall command
mov a,#01h
acall command
mov a,#06h
acall command
ret
"
this part is also included in the code i burnt....
my lcd is not even displayin a char:(
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Ajay
Tue May 08 2007, 08:34AM
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do the following checks...
*Check if the port is same as used in the code?
*Check connectivity of the connection using a multimeter
*Check for shorts
If everything mentioned above is right then, your controller might be at the problem.
to check controller:
*Check reset circuit using a CRO (Must show a High->Low pulse)
*Check crystal (you will get a sine wave)
If your controller is also ok! then.. the problem is unpredictable. I hope after the first checking everything will be ok.
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