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MikeP,

I tried your code and saw the only difference is how we write the while loop that basically does the same thing.

I have good news in that I use an USB interface to flash the HEX file unto ...

I made the changes you suggested and here is what it looks like now, but still just blink random address in LCD.

#include <16F877A.h>

//#device ICD=TRUE
#device ADC=10

#fuses HS,NOWDT, ...

Yes, I tried different clocks to see if timing was an issue, but I have a 20MHz crystal in my setup.

Again, the code was copied and pasted into the compiler from this site, so comments are what the ...

I'm using a PIC 16F877A TQFP package;

LCD pin 1 (Vss) ground
LCD pin 2 (Vdd) 5V
LCD pin 3 (V0) has 0.50 volts
LCD pin 4 (RS) goes to PIC pin 40 (D2)
LCD pin 5 (R/W) goes to PIC pin 41 (D3)
LCD ...

First I will address whats on Vo, it has a 5K pot to adj the contrast to LCD.

Here's the code I copied. Note the flex code has "B" in it because I made 2 versions. This code just has li ...

Yeah, those are the same as my data sheet on the LCD and I have more than double checked them to make sure.

Sorry, I must have dyslexia because the version I have is 3.249 not 2.3 as previously mentioned. Your code compiles with no problems, I just have to place all the includes in the same folder to be ab ...

The pinouts are:
1 Vss
2 Vdd
3 Vo
4 RS
5 R/W
6 E
7-14 data

I'm using a Goldentek GC2004A0SHN1B

I read through the sticky regarding the lcd420 driver & code and found you wrote a couple of each and tried them all with no luck. I have even tried grounding the WR lead and still get rows 2 &am ...

Yes, I just found the 'search area' once I submitted the post. I was looking for a small "hello World" test for each line of the LCD and didn't want to write something if its been done a 10 ...

I'm sure this has been done many times, but I can't find a search function on the site, so I'll ask for any LCD test source code for an 16F877A using a 4X20 LCD. Thanks in advance!

For future reference how does one place the code in the code box, I tried and obviously it didn't work and didn't find how to do so using forum help or FAQ.

Thanks PCM,

I made minor changes to your code so I could use my bluetooth and it works beautifully! Could you explain why it didn't work incrementally with each pass of the while loop and why it d ...

Here is a follow-up question regarding the code & compiler. Below is the code that I have atempted to make the "width" change, but it is set to 10 and stays at that value, does any one ...