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Regarding ha.hex file


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murali1439

Fri Nov 21 2008, 02:54AM

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Hi Ajay sir i am new to this forum.i downloaded ur hexfile in to my microcontroller(p89v51rd2).When i want to access from telnet it shows nothing.In telnet i typed "stat" but it didnt gives any output like in demo(Home automation demo).This is the only hexfile(ha.hex) i havt to dump sir?
I am waiting for ur reply sir

ch.murali

Ajay

Sat Nov 22 2008, 10:24AM

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check your hardware with hyper terminal... are you getting welcome message?
if not then check your serial connection..

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murali1439

murali1439

Mon Nov 24 2008, 02:15AM

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Hi Ajay sir
Thank you for ur kind reply
I checked my hardware with hyperterminal with automation program.I also checked my serial connection, its good.when I dump another program (gsm commands)to my microcontroller and check the output on telnet, it gives the exact output.In telnet sometimes it gives scrap(ascii char's only)and some times it shows nothing.And i am not able to find any thing in lcd.it gives bright light(15 and 16 pins are connected for Vcc and Gnd),how i can i reduce the contrast of lcd.And how to get exact output in telnet.Waiting for ur reply sir.

[ Edited Tue Nov 25 2008, 03:24AM ]

ch.murali

Ajay

Tue Nov 25 2008, 06:15AM

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If your LCD is not working then check the connection of LCD first. write a simple program to o/p string on LCD. You can make use of program provided in LCD tutorial Section.

To vary LCD contrast, use the Potentiometer connected to Pin3 of LCD. I am sure its not the contrast problem. Please do check your LCD, because if LCD is not initialized, nothing will work.

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murali1439

murali1439

Fri Nov 28 2008, 02:15AM

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Hi ajay sir,
i connected lcd to my controller perfectly .Now i got the o/p in telnet.it shows all commands(stat,tube...).But in lcd o/p is not coming,some ascii type char's are coming.And
commands also not working properly.If i switch the tube then all applainces will be on.Is there any modifications please tell me.

ch.murali

Ajay

Sat Nov 29 2008, 12:46AM

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no there is no modification. I am clearly not sure what the problem is. Can you do this..
try testing your LCD only. send something to LCD and see if its working. then check your input switches one by one. Did you check LCD contrast? make sure its not too low.

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