Wish ST7735R TFT LCD driver needed

[Cableguy]

Hi Guys,

I know this has been requested before, but the request was, in my opinion, badly addressed, asking for a "Graphics Display library", which already exists (https://www.b4x.com/android/forum/threads/radafruitgfx.68904/)

The oficial adafruit libray can he found here: https://github.com/adafruit/Adafruit-ST7735-Library

Thanks in advance to all the wrappers out there!

 

[Erel]

Do you have this hardware? Does it work with their examples?

 

[Cableguy]

Funny, just tested it 2 seconds ago, actual just unplugged my nano board!
Test with Arduino Uno R3 clone - OK
test with Arduino Nano clone - OK
tested using the "graphictest" example file

 

[Erel]

I will try to create a library after B4A v7.30 is released.

 

[Cableguy]

Cool, so I can start preparing my schematics....
BTW, I will use it for a Soldering Station along with an Arduino Nano, a Rotary Encoder, etc... Should be a complex yet fun project to build, and to show of the Power Of B4R!

 

[Erel]

Please try the attached library. It is based on: https://github.com/adafruit/Adafruit-ST7735-Library

Example:

Sub Process_Globals
   Public Serial1 As Serial
   Private st As AdafruitST7735
End Sub

Private Sub AppStart
   Serial1.Initialize(115200)
   Log("AppStart")
   st.InitializeSoftware(10, 8, 11, 13, 9, 0) '0 = ST7735R green
   st.FillScreen(st.COLOR_BLACK)
   st.GFX.DrawCircle(10, 10, 10, st.COLOR_RED, True)
End Sub

 

[Cableguy]

It works "right-out-of-the-box" with a very minor glitch: My tft, although it has a green tab, selecting the option "0" in the initialize method show an "offset" of 2 pixels vertical and 1 pixel horizontal, plus the bal shows the color Blue.
I was already aware of some issues with this, and tried the option "2" (Blacktab) and it works as it should, no offset, and the Ball is Red!

Many Many Thanks @Erel, I got 2 gifts from today!

 

[Cableguy]

Trying to show text, I can show text in default white color, but I just can't figure out how to change its color.
I have tried:
st.GFX.DrawText("Hello World").ConfigureText(2, st.COLOR_CYAN, False)
but neither the text size nor the text color change

 

[Erel]

Where is the picture?

Try to call ConfigureText before you draw it.

 

[Cableguy]

I did, but the IDE didn't like it... I will have to look deeper into it... I also have successfully used the "byte array/inline C" Bitmap into progmem code, the one with the smileys.
I will try to create a better looking image and post my TFT photo.

 

[Cableguy]

Try to call ConfigureText before you draw it.

As usual, you are absolutely right!

st.GFX.ConfigureText(1,st.COLOR_red,False)
st.GFX.DrawText("Hello World")

Works just fine!!!

No time to create an image worth showing!

 

[Cableguy]

Well, its not a photo....

https://www.b4x.com/android/forum/t...h-an-arduino-and-a-st7735r-tft-display.83038/

 

[Peter Simpson]

I can't Tait today see what you come up with @Cableguy

I've not been very active as of late as I'm busy looking into a new business opportunity, hopefully.

Back to you, chop chop hurry up lol...