[PIC] Bitmap printing on TTL Thermal Printer

Dear friends,
I am able to print texts, barcodes on the (Serial/TTL) Thermal Printer from the PIC MCU using the following similar commands.

putch(0x1B); // ESC
putch(0x2A); //*
puts("Welcome to Edaboard \r\n");
etc.

but struggling to print the bitmap. I like to bring one important point to your knowledge that I am even struggling to find out the proper/correct ESC/POS commands for my printer. Some documents say to use this command to set the printer to start bitmap : "0x12 *" (DC2 *). Some other documents say "0x1B *" (ESC *). I tried both commands. But it prints only characters not image. Same characters printed even after If I don't use those commands. No datasheet provided along with the printer. I went through the arduino library files on github.

For your information:


But not succeeded yet. I also browsed extensively on web. No useful info received. Any help to solve the issue would be highly appreciated.

Components used:
MCU : PIC16F1938
TTL Thermal Printer RP203.
Communication: TTL (RX, TX)


Thank you,
Vibrant

I found a RP203 user manual within a few clicks on the internet...

Hi FvM,
Can you please share the user manual? Does it contain the command set? Thanks

Hi,

Is it asking too much to do a simple internet search "RP203 command set" on your own?
How much time did you spend?

Klaus

Just type in "rp203 thermal printer user manual".

KlausST said:

Is it asking too much to do a simple internet search "RP203 command set" on your own?
How much time did you spend?

Click to expand...

Really I did extensive search on the internet for last 3 days to get suitable ESC/POS command set for example downloaded command set from EPSON site and other sources. But commands are different for different models. Even i tried all the command set but i can't succeeded. For your information, I tried with my seller too but they also said they don't have command set. That's why I come here to get your help. After the suggestion of FvM, i tried again on the internet. I found (its really miracle for me) only one pdf document which was same as FvM sent here.

Anyway, finally i got the command set from FvM now.

Thanks to FvM and you all.

Actually i tried with the same bitmap command set mentioned in the document earlier but no bitmap printed. I am still trying to solve the issue. If you can help, it would be very helpful.

Thank you,
Vibrant2020

Hi,

Vibrant2020 said:

Really I did extensive search on the internet for last 3 days

Click to expand...

Wow. I did a single search ... and the document was the second hit. 3 seconds.

We won't write code for you, we won't do your job.
But we like to help you to rectify your mistakes.
But for this you need:
* to show your code
* give additional informations like wiring, power supply...all that is required to make a printer to work
* tell what you expect
* tell what you get/see instead

Klaus

Hi all,
I finally abled to print bitmap image using the command
GS v 0 xL xH yL yH
Now the image prints on left justification. I need to be centered it. So I tried the command
ESC a 1
(0x1B 61 0x31)
But not succeeded. Any suggestion would be appreciated. Advance thanks.

Files added.

Vibrant2020

The sequence I followed :





This for your information.

Thanks
Vibrant2020