Thanks WiFive. Indeed we were considering ULP, but would prefer to use the XTENSA cores.

Update: We are exploring running FreeRTOS only on core 0 and putting our ISR on core 1.

How can I get a GPIO interrupt to pre-empt WiFi and RMT operations? I need high priority I have tried using ESP_INTR_FLAG_LEVELn, but I get exceptions for even LEVEL1. Only the default flags, or IRAM flag work. --- DETAIL: We've got a 40 kHz clock running to an ESP32 GPIO pin, with an interrupt ena...

Thanks Sprite. Hopefully we do not need to switch platforms, but smart-home customers are demanding 5GHz.

:facepalm: Thanks Igrr. Your quick response saved us a lot of headache!

Increasing the deep sleep time made the situation worse (as expected), and adding the following before deep_sleep totally fixed the issue:

We've observed a strange behavior on 2 units of ESP32 dev kits where the RTC memory becomes corrupted after deep sleep. We are still working to isolate the problem, and hope to provide an example project that shows the issue, but for now I just want to share what we are seeing: /* application writes...

I don't think that AWS IoT requires having an accurate local time. I believe that by using certificates generated by AWS which are still valid in real clock time, it doesn't matter what the time is on the ESP32, as long as the embedded ssl library (mbedtls) doesn't reject the certs because it thinks...

Hey Georg, In my experience, using a serial port through some amount of emulation is only useful in an emergency... for serious development, it's best to have it native. Otherwise you waste a lot of time with comms issues. If you're stuck on Windows, note that the build system and flashing does work...

I don't know of a convenient way to configure the softAP IP, but you can change the gateway address by modifying the IDF code: diff --git a/components/tcpip_adapter/tcpip_adapter_lwip.c b/components/tcpip_adapter/tcpip_adapter_lwip.c index 8198cb344..d5ed71073 100644 --- a/components/tcpip_adapter/t...

We had considered using a single bin, but it turned out to slow down the programming process unacceptably, so we just use a single esptool command with multiple files (partition table, bootloader, app), and it worked great. Usually there's a script that flashes a production package anyways, so it's ...

Hey Samson, for what it's worth, I use multiple SSL connections simultaneously (AWS IoT over TLS with certificate validation) and HTTPS using mbedtls socket (although I'm not sure whether the certificate validation is being performed, we don't care in our application). --- No problems thus far. [EDI...