I found the problem here. The TFT uses GPIO21 for the DC pin. The SD card uses GPIO21 for the CD pin. If you remove R167 - which is at the bottom left corner of the WROVER module - it will disconnect GPIO21 from the SD card detect line and allow the LCD interface to function.
Mike.
Search found 2 matches
- Sun Nov 25, 2018 6:04 pm
- Forum: Hardware
- Topic: Documentation for ESP WROVER KIT 4.1
- Replies: 6
- Views: 10979
- Sun Nov 25, 2018 5:33 pm
- Forum: Hardware
- Topic: Documentation for ESP WROVER KIT 4.1
- Replies: 6
- Views: 10979
Re: Documentation for ESP WROVER KIT 4.1
I am seeing this same issue. The SD card initializs successfully but the display is blank. The jpegtest example works but only when the SD card is out.
Mike.
Mike.