Hi ESP_Sprite,
Yes, that was the problem, I had external pullup resistors on MTDI. It seems the last batch of modules had 1.8V flash. I removed the pullups on 1 of each board, and both can now load flash correctly.
Thank you!
Search found 2 matches
- Mon Dec 27, 2021 7:41 am
- Forum: Hardware
- Topic: [SOLVED] can't write/erase flash on ESP32-WROVER-E
- Replies: 3
- Views: 7025
- Sun Dec 26, 2021 7:37 pm
- Forum: Hardware
- Topic: [SOLVED] can't write/erase flash on ESP32-WROVER-E
- Replies: 3
- Views: 7025
[SOLVED] can't write/erase flash on ESP32-WROVER-E
Hi all, I'm bringing up a new batch of custom PCBs with integrated ESP32-WROVER-E(M213EH6464PH3Q0) modules. I'm having a strange issue: I can't seem to erase (or, consequently, to write to) the onboard 8MiB flash. I don't think this is a board or connection problem, because I have two separate PCBs,...