MicroPython Forum (Archive)

Looks like the "bricking" (killing Wi-Fi radio) I was experiencing wasn't related to your ESP-Now code. When I tried my original firmware on a brand-new out of the package ESP32, it also showed the wifi:esf_buf error messages. I think for now please disregard for now my report of bricking. I believe...

davef wrote: ↑

Mon Apr 04, 2022 8:18 pm

Most of the boards I have been using are ESP32_DevKitc_V4 and they are not SPIRAM. Have I misunderstood?

Depends if the DevKitc contains a WROOM, SOLO, or WROVER module. I sought out the ones with the WROVER modules because those all have SPIRAM.

However, now that I have some idea of what you mean by "bricked" ... where do those errors appear? In rshell? I see the errors in a serial console, over picocom. I never have these errors otherwise. Was able to flash it back to the official firmware and the module I bricked sometimes works again, s...

I tried setting them to their max, no good.
CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM=25
CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM=128
CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM=64
CONFIG_ESP32_WIFI_CACHE_TX_BUFFER_NUM=128
CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM=128

Found someone who seems to be experiencing a similar issue with broadcasts. Their solution was to increase the WiFi buffer sizes in sdkconfig. Trying that now.
https://www.esp32.com/viewtopic.php?t=7421

When I say "bricked" I mean unusable. The Wi-Fi stops working. I don't mean that I see errors in flashing or otherwise using. Until wlan.connect() they act normally. The newest Lolin that just arrived from Amazon, cannot even connect using the standard official firmware . (MicroPython v1.18 on 2022-...

Just got a new unit from Amazon, seeing similar problems. That rules out hardware, I think. It could be my code, but I can't see how. Doing everything the documentation suggests. Guess I cannot use ESP-Now for now. I'll wait 'til it gets officially added and try again. Edit: Great. And the new hardw...

davef wrote: ↑

Fri Apr 01, 2022 7:01 am

It appeared that you might be having signal level problems. If the units are in the same room then you probably don't have that problem

The units are less than one meter apart. I'm going to buy two more ESP32 and ensure it is not some hardware failure.

Anyone having bizarre behavior with .irecv()? 1.) I must manually paste .irecv() command before I can start my main code 2.) After about a minute of looping and successfully receiving packets, that stops working Direct calls to .irecv() only work intermittently. I must first manually paste in an .ir...

davef wrote: ↑

Fri Apr 01, 2022 2:21 am

The documentation says he has put a RSSI function in, but check his GitHub as I am not sure it has made its way into images.

Not clear how that would help, please explain?