WHY don't they list the connections

Other Hardware Displays
1

I just don't understand these clever folks that write these libraries, then hide all the information you need to make it work.

For instance. 2.4" MCUFRIEND Touchscreen. There is a specific library for it which you would think should make life easier.

I can't find anywhere what the connections are.

Looked in MCUFRIEND_kbv.h and MCUFRIEND_kbv.cpp and I can't see them.

WHY don't you list them in the README file or provide a simple diagram.
Maybe just list them in the comments at the top of the examples.

This happens over and over and I just don't get it.
The same goes for the commands. You get these instruction lines with absolutely no reference to what they do.

So basically.... the library is only any good to the guy that wrote it, or someone with 3 hours to waste trying to work it out from the files or Google.

So. Delete that library and try another one i suppose.

2

Did you look in mcufriend_shield.h which is #included by the library ?

3

It will work whether you know what the connections are or not. So why do you need to know?

4

How will it work without knowing the connection? It's not going on an UNO

5

From the webpage
"Insert your Mcufriend style display shield into UNO. Only 28-pin shields are supported"

So you are trying to use the library for hardware for which the library was not written.
In that case you are basically on your own.

6

If the library isn't written for anything else other than an UNO, then why are all the other processors listed in the mcufriend_shield.h file (thank you for that)

7

See MCUFRIEND_kbv Guide - Using Arduino / Displays - Arduino Forum

And look up at the clouds. Maybe you see a grinning face.

BTW: did you read How to get the best out of this forum?

  • you might understand the importance of voluntary work to provide these libraries
  • you might learn the importance of providing all information related to your question

If you provide a link to your display, or a picture of the backside, then we might understand your frustration, and maybe someone can even help you.

1 Like
8

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