Looks good so far....
More questions you need to answer or simply do...
1) when you compile your code do you get any errors?
2) need to post your code,
->may be something as simple as incorrect timing for the
initialization sequence from pic to lcd or somethng even more
problematic like poor coding or incorrect setup of config word
anywho my 2 cents
On 29 Apr 2007 10:43:53 -0700, sneha.kathuria@[EMAIL PROTECTED]
wrote:
>hi all, i m trying to display some text on LCD using pic16f877 but
>unable to get that.......... only backlight turns on in LCD
> circuit diagram i have made is as follows:
>pin 1 of pic to reset button( i hav conncted reset button through pull
>up resistance of 9.7k n it is at +5v when reset button is not
>pressed.)
>8 MHz crystal with 22pf cap on 13 n 14 pin
>12 n 31 pin ground
>11 n 32 pin to +5 V
>pin 27 t0 30 connected to pin 11 to 14 pf LCD respectively
>{LCD - PIC
>VSS GND
>vdd +5v
>vee 4k7 reostat
>rs RD2
>rw gnd
>e RD3
>d0 gnd
>d1 gnd
>d2 gnd
>d3 gnd
>d4 rd4
>d5 RD5
>d6 RD6
>d7 RD7 }
>pin 21 to pin 4 of LCD
>pin 22 to pin 6 of LCD
>lcd pins 1,5,7,8,9 n 10 are grounded
>pin 2 of LCD connected to +5 V
>n pin 3 to variable rheostat of 4k7
>N I M GETTING SINE WAVE ACROSS CRYSTAL WITH REFERENCE TO GRND instead
>of square wave
>m unable to get the prob.
>plzzz help
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