Guru
Joined: 11/02/2018
Location: AustraliaPosts: 2398
| Posted: 12:07am 22 Nov 2022 |
If you look back through the various ILI9488 threads you will see that the ILI9488 chip has a fault in the silicon that prevents the SDO-(MISO) pin switching off when CS is high. Instead it stays active low, preventing touch and SD cards from using MISO. To get touch working just put a 680R from SDO-(MISO) to your MCU MISO. This may also allow SD cards to work, but not always. If you have SD issues try this:-
I have found it passes all tests.
Read this thread:- https://www.thebackshed.com/forum/ViewTopic.php?FID=16&TID=15214#192349
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Edited 2022-11-22 10:33 by phil99