Write n Read 24C04

Dear Mr Ajay,
Thanks for the reply.
I am attaching the Proteus screenshots along with my single dot matrix hardware image file.
I have already assembled a pcb having 12 dot matrix units. I am testing this with my Development kit.

Thanks
with best regards
sks

Wow it looks great looking forward for this project

PS: Thanks for adding my name hehe

Dear Mr Ajay,
Thanks for the reply. I am extremely happy to know that , you have read the code and appreciated. I do expect some comments on the code. I do THANKS ALL (You Mr Phil and Mr Mazoka) to help and guide me. I could come to this stage because of you kind people in this forum.
Oh yes i will definitely post the complete project when it will be fully completed.
Thanks
With best regards
sks

you're always welcome keep it up.... and Good Luck!

Dear Mr Ajay,
I have followed the ATtiny display tutorial and written this attached code for a single dot matrix, as per the description in the tutorial.
I am sorry to say that, I have tried but failed to scroll the text in the dot matrix, they have done it in a single dot matrix. I am able to understand the logic but sorry, not able to implement in the code. If you can give some clue it will be a great help. Please the the attached file, the code and the proteus project file is also there. Please comments
Thanks
With best regards
sks

Here is a simple code that explains working of a Dot matrix display hope it helps...

/* your display buffer */
/*
5x7 display character
---------------------
   P2.0 1 2 3 4

P1.6    * * *
P1.5  *       *
P1.4  *       *
P1.3  * * * * *  
P1.2  *       *
P1.1  *       *
P1.0  *       *
*/
display[] = { 0x3F, 0x48, 0x48, 0x48, 0x3F, 0x00 };

/* main while loop */
while (1) {
	/* outer loop for controlling start point */
	for (i = 0; i < 6; i++) {
		/* delay for one frame to be displayed */
		delay = 100;
		/* inner loop for display */
		while (delay--) {
			/* your normal display loop */
			for (k = 0, j = i; k < 5; k++, j++) {
				if (j >
 5)
					j = 0;
				/* Put data on rows */
				P1 = display[j];
				/* enable column one by one */
				P2 = 1 << k;
				/* let it display for some time */
				mdelay(20);
			}
		}
	}
}

Dear Mr Ajay,
Good Evening, Somehow i have written the code. Here i have attached the complete
project. Please see and advice. In this code, the ASCII to bitmap conversion sub-routine is different.
The display is not stable, not scrolling smoothly.
Please find some time for me and advice.

Thanks
With best regards
sks

Dear Mr Ajay,
I am waiting for your reply. I know how much pain you are taking to help.
waiting for your kind reply.
Thanks
With best regards
sks

Hi SKS, I would like you to try your code on hardware coz in proteus it will never be smooth coz of high CPU usage during debugging. but the same laggy code will run smoothly on hardware. Only thing to worry about is
1. Are you getting character displayed properly?
2. Are they scrolling the way you want (discard the speed or smoothness as its simulation)?

Hello Mr Ajay, Thanks for the reply. Sorry i couldn't test the code with the hardware to day due to some other works.
I will try to post the result tomorrow.
Thanks
With regards
sks