Thanks for the answers.
It is a WROVER custom board. We used an external pullup resistor and we removed it. It seems to fix the issue since it never happens again after that.
Search found 2 matches
- Fri Apr 06, 2018 10:24 am
- Forum: Hardware
- Topic: ESP32-WROVER randomly goes into download mode (ROM serial bootloader for esptool.py)
- Replies: 3
- Views: 6396
- Wed Mar 28, 2018 9:13 am
- Forum: Hardware
- Topic: ESP32-WROVER randomly goes into download mode (ROM serial bootloader for esptool.py)
- Replies: 3
- Views: 6396
ESP32-WROVER randomly goes into download mode (ROM serial bootloader for esptool.py)
Once in a while (2-3% of the time), the ESP32-WROVER will go into download mode even when GPIO0 is high. This happens after power cycling. We get the message below and we don't know what “boot:0x20” exactly means. We couldn’t find any useful documentation on the first stage bootloader. Entire boot m...