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yoprogramo / QRcodeDisplay

ESP Generate QRCode for several displays - Base Repo
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[QUESTION] increse string size #2

Closed MateusDornelles closed 2 years ago

MateusDornelles commented 2 years ago

Hi, how can I increase the maximum string size ? My string has 176 characters, the limit appears to be 154.

Thanks.

yoprogramo commented 2 years ago

Hello,

The only limit we have fixed is the 256 bytes on the buffer, but you have to take into account the size limitations and max number of modules that your screen can paint. We are using a matrix of 45x45 that allows from 154 to 370 characters depending on the ECC Level (we are using Level 7 ECC H) so you can only paint 154 characters.

You can tune the file frame.c to change the values used but you should regenerate the frames as well. You can do all the process with the command dofbit in this repo: https://github.com/tz1/qrduino. Let me know if you make it.

MateusDornelles commented 2 years ago

Hi yoprogramo, it worked.

Thank you for your time.

yoprogramo commented 2 years ago

Congrats! can you please send me the changes to frame.c you do? Just to see if I can integrate it.

Regards.

yoprogramo commented 2 years ago

Waiting for modified code to integrate, I close this issue

MateusDornelles commented 2 years ago

Hi yoprogramo, sorry for the delay. What i did was to clone the repository you passed (https://github.com/tz1/qrduino), then i used the program dofbit with the params 8 (version) and 1(ECC) to generate the new frame.c, I just replaced the contents of the old file with the output generated by dofbit.

frame.txt

tkjoko09 commented 1 year ago

Hi yoprogramo. can you help me to change the frame.c to accept Version 10? i think we need it now, I use ESP32 so it can hold more memory. BTW, i am a newbe so i cant generate it by my self. Thanks for your Attention.