Fenichel

The second problem noted here is slightly less severe than it seemed to me. The single-color values are integers, but with a unit size of 4. That is, the integer division to compute dr/dg/db will cause bad gradients, but only in relatively...

I tried 99luftballons with DC & CS connected per the #defines (10 & 9) and then swapped. My board doesn't have the touch controller connected. so that's not the issue. When I upload 99luftballons (with either cabling), it claims inability to...

The library manager thinks that the available version is 1.1.1. Is that your latest? Using that one, the compiler looks at demosauce and says loading library from c:\Users\rrf\Documents\Arduino\libraries\bb_scd41: invalid library: no header...

I updated Teensyduino, and I deleted any ILI9341_t3 files still in Documents. (Why does the IDE Library Manager put them there?) ILI9341_t3.graphicstest now compiles, loading library from c:\Users\rrf\Documents\Arduino\libraries\bb_scd41...

Thanks for your continuing help. I gave the full diagnostic output for ILI9341_t3.graphicstest in post #1. I hadn't thought of putting the compiler into verbose mode. When I do that with ILI9341_t3.graphicstest, I get loading library from...

Thanks for your effort. Inasmuch as I just installed the ILI9341_t3 package fresh via the IDE, I don't understand why your results are different from mine, unless my copy of the compiler is corrupted. If no one else has any useful suggestions...

I searched my C: drive and removed all non-Adafruit files named ILI9341*.*, and I then reloaded the ILI9341_t3, ILI9341_t3n, and ILI9341_T4 libraries by using the library manager in the Teensyduino IDE. The resulting folders were all in...

No, 4.1 is selected.

For what it's worth, the graphicstest sketch in the AdaFruit_ILI9341 package works fine, except for having a default screen size smaller than that of my device.

I am trying to connect an ILI9341 display unit to a Teensy 4.1, running the Teenyduino IDE (2.3.6) under Windows 10.. The IDE is running normally with other sketches. When I try to run the graphicstext example from the ILI9341_t3 library, the...

There are two problems with the fillRectHGradient and fillRectVGradient routines, one trivial and one deeper. In the fillRectHGradient routine, each h in the line dr=(r2-r1)/h; dg=(g2-g1)/h; db=(b2-b1)/h; should be w. The fillRectHGradient...