Hey AP, in fact, we have run into a similar issue here. If you read in the ESP-IDF version of FreeRTOS code, you will see conditional compilation in many places like this: #if !CONFIG_FREERTOS_UNICORE You will often see while loops used to spinlock waiting for the other core to release some resource...

Thanks Angus! So, was my mistake to use the tag v3.3-rc rather than the latest on the branch.

WiFive: see the beta forum post here: https://forum.bondhome.io/t/bond-v2-platform/466 The units with serials starting ZZ are ESP32-based.

We get a crash in the v3.1 (or v3.2) bootloader when attempting to jump to the v3.3-rc application. Note that if I upgrade the bootloader to v3.3-rc, it works fine. Is there any known incompatibility here? I can try reproducing with a minimal example if that helps. Rebooting... I (29) boot: ESP-IDF ...

Good news! IDF v3.3-rc *seems* to fix the issue. It is hard to tell, as this is an intermittent issue, but my trials so far are very promising.

Thank you Espressif for the incredible work in maintaining ESP-IDF. It's mindblowing how well you support this platform...

The problem persists. Not all Google Wifi users are effected, but now the issue has occurred at our offices so I was able to get a packet capture. We have 2x Google Wifi units on software version 11895.108.11. Now using ESP-IDF v3.2. The one thing that looks NOT RIGHT to me is, the ESP32 initial tri...

Hi Jerome, So I'm late, but better late than never? Those two defines are arbitrary values you decided to use ? Yes, they are essentially arbitrary. Values to avoid are 0x0, 0xFFFFFFFF, 0xCCCCCCCC, and 0x55555555, since those may be default conditions. The 1/2BADBABE is chosen because it is immediat...

@WiFive: THANK YOU! HelWeb's work is just what we needed to see. It's amazing how well you know the ESP community. -- Will update when we have a full solution to our issue, and describe what we learned.

@HelWeb:

Just want to thank you for posting your technique for running without RTOS on Core1. This is extremely useful information to my team here to work around interrupt performance issues on Core0. We will let you know our results!

Merci vielmal!

Is there any chance you could e.g. use the I2S or SPI peripheral to do this? We have tried, but no luck so far. I2S seems to require a higher external clock speed. External protocol clock is 40kHz. We need to continuously stream data from the GPIO into the application, and we don't see how to do th...

Is there a known issue with ESP32 and Google WiFi compatibility? We are getting reports from the field, and are closing in on a reproduction of the issue.

Using IDF v3.1.2 at this time.

(Will update with more details in ~48 hours.)