Search found 5 matches

by cdDave
Mon Oct 28, 2019 12:10 pm
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 13175

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

Hi, We are using the ESP32-WROOM, so I don't have access to the flash voltage lines. EN is pulled to high voltage at all times. What could explain the difference in boot behavior between the automatic constant reset (and getting checksum fail) vs doing a manual reset and then the boot successfully c...
by cdDave
Fri Oct 25, 2019 12:59 pm
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 13175

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

I have some more results based on the above. 1) I upgraded the IDF version to 3.3 just to make sure I'm on a more recent branch (We were previously on an older IDF version) 2) I added the logging at the beginning of the 2nd bootloader as suggested The crash happened on one out of 7 devices again las...
by cdDave
Thu Oct 24, 2019 12:28 pm
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 13175

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

Thanks.

For the I2C pins - IO21 is SDA, and IO22 is SCL on our device.

Regarding the 2nd bootloader logging - I haven't changed that from the IDF defaults. How do I go about enabling the logging?
by cdDave
Wed Oct 23, 2019 3:54 pm
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 13175

Re: ESP32-WROOM Occasional reset, and then locked in bootloader WDT

Thanks for the response! I assume by "which GPIO are you using", you are referring to IO0 and Reset? If so, both of those are pulled high at all times, through a 10k resistor. We have the capability to enter programming mode by jumpering those pins, but normal operation always has those pins pulled ...
by cdDave
Tue Oct 22, 2019 3:16 pm
Forum: General Discussion
Topic: ESP32-WROOM Occasional reset, and then locked in bootloader WDT
Replies: 10
Views: 13175

ESP32-WROOM Occasional reset, and then locked in bootloader WDT

We have a device based on the ESP32-WROOM which works most of the time. The ESP32 is reading an I2C accelerometer constantly, once every 20 ms. Some of our products can last forever running code - but every so often we see a device get a reset in the ESP I2C driver code. This in of itself is interes...