KrisKasprzak
Well-known member
All,
I'm using a Teensy 3.2 and a 3.5 ILI9488 screen, and i have this display and tested the MISO line from the display and sure enough it's not tri-state. Meaning I could not get the display AND the on-board SD car working. Note, by visual inspection, it looks like I do have a MISO trace for the display.
Per the suggestions on Pauls "better tri-state design", i connected a 74AHC1G125 to the displays MISO line (controlling with the displays chip select), and viola the SD cards NOW works with the display (of course replacing the 3 SD card resistors with 0 ohm resistors. I have also tested the touch, and It works as well.
I'm dying to use my PrintScreen code to, print the screen, but the getPixel(), returns nothing. I poked around the getPixel method in the library and the code is executing but returning.
It may be in fact this display just doesn't have readPixel capability. If not, i'll just disconnect the display MISO and not use the external buffer. Bummer if this is the case.
Anyone have experience with this display?
https://www.amazon.com/gp/product/B088JWM8ZR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I'm using a Teensy 3.2 and a 3.5 ILI9488 screen, and i have this display and tested the MISO line from the display and sure enough it's not tri-state. Meaning I could not get the display AND the on-board SD car working. Note, by visual inspection, it looks like I do have a MISO trace for the display.
Per the suggestions on Pauls "better tri-state design", i connected a 74AHC1G125 to the displays MISO line (controlling with the displays chip select), and viola the SD cards NOW works with the display (of course replacing the 3 SD card resistors with 0 ohm resistors. I have also tested the touch, and It works as well.
I'm dying to use my PrintScreen code to, print the screen, but the getPixel(), returns nothing. I poked around the getPixel method in the library and the code is executing but returning.
It may be in fact this display just doesn't have readPixel capability. If not, i'll just disconnect the display MISO and not use the external buffer. Bummer if this is the case.
Anyone have experience with this display?
https://www.amazon.com/gp/product/B088JWM8ZR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1