Cannot find the way to extract raw data of GT911 touchscreen

Community General Discussion
1

Is there a method to extract raw data from a touch screen using the GT911, regardless of the type of Arduino board used?

By raw data, I don't mean the simply recognized touch coordinates, but rather the raw data of the touch values (capacitive values) detected on each of the 26x14 = 364 touch grids.

If this is too difficult, does anyone have information on the 7-bit addresses referred by each touch grid?

This is my first time extracting raw data from a touch screen, so I appreciate your understanding for these basic questions.

2

Is there a method to extract raw data from a touch screen using the GT911, regardless of the type of Arduino board used? (using I2C)

By raw data, I don't mean the simply recognized touch coordinates, but rather the raw data of the touch values (capacitive values) detected on each of the 26x14 = 364 touch grids.

If this is too difficult, does anyone have information on the 7-bit addresses referred by each touch grid?

This is my first time extracting raw data from a touch screen, so I appreciate your understanding for these basic questions.

3

Your two topics on the same or similar subject have been merged.

Cross-posting is against the Arduino forum rules. The reason is that duplicate posts can waste the time of the people trying to help. Someone might spend a lot of time investigating and writing a detailed answer on one topic, without knowing that someone else already did the same in the other topic.

Please create one topic only for your question and choose the forum category carefully. If you have multiple questions about the same project then please ask your questions in the one topic as the answers to one question provide useful context for the others, and also you won’t have to keep explaining your project repeatedly.

Repeated duplicate posting could result in a temporary or permanent ban from the forum.

Could you take a few moments to Learn How To Use The Forum. It will help you get the best out of the forum in the future.

Thank you.

4

I truly did not know about this rule. I sincerely apologize. My intention was purely to seek help from experts. Once again, I am sorry, and I promise to follow the rules carefully in the future.

5

No. Unless you hack past the interface offered, all you can do is talk to it as its designers provide.

But it looks fairly low level; most libraries mean to make things easier than slogging your own way through this

https://www.crystalfontz.com/controllers/GOODIX/GT911ProgrammingGuide/478/

a7

7

I of course checked datasheet or the programming guide, searched all over the internet, but I couldn't find it, which is why I'm asking you.

8

Sry, I did see your reply.

You couldn't find it, but is not what I linked what you expected to find? I googled for not too long, and will admit to only having flown over the "Programming Guide" I turned up at a high altitude.

As I said, it appears to be all and what you can get from the device without climbing past the afforded interface.

I got nothing beyond that, there was some less interesting (to me) stuff all down from

HTH

a7

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