Hi All, For those who experience the same problem when using the reference designs, I have solved it as follows. When reviewing the diagram supplied by Espressif, see initial post. C15, which is a 0.1uF debounce capacitor on the Boot switch causes, the MCLK to be smoothed. Upon removing said debounc...

Hi, I have designed a PCB using the ESP32 WROOM, after building a successful prototype. However, on the prototype, my GPIO 0 MCLCK signal is OK Please see image DS0001.PNG While on my new PCB, the signal is noisy, please see image DS0002.PNG I have designed the board using the Espressif reference di...

Hi All, It seems that I didn't check input power properly enough and in short, I was being stupid. Basically for anyone reading this, I wasn't supplying enough voltage to the 5V input of the ESP DEV board, which meant it was dropping out when initialising the ESP_NOW_INIT. Explanation: Although desc...

I have as far as I can with the Boot Trace listed earlier, but it gives very little information. This is the latest Boot Trace output and its clearly pointing at esp_now_init: Exception:Error: ??:?:::0x40121b6c:esp_now_init /builds/idf/crosstool-NG/.build/HOST-i686-w64-mingw32/xtensa-esp32-elf/src/n...

Hi All, Unfortunately, this wasn't the fix I thought it was. Yes, it stopped the boot loop, but that is only while the USB lead is connected. The boot loop returns as soon as you remove the USB lead, with the same error which is, as soon as it gets to ESP_NOW_INIT, the ESP reboots. What is fascinati...

Apologies to anyone who has read this and tried to help, but I have figured out the issue. One line of code which I had missed as follows:

Although I haven't solved it with this method, at least there has been a positive already, as it turns out that Visual Studio with Visual Micro includes an Exception Error system as standard! Unfortunately, it simply points me to what I already knew, which his that the error occurs at this point in ...

Hi, Not sure how to do that specifically. I have purchased an ESP Prog, which I’ll configure over the weekend to see if I can come up with any indicators. What’s annoying is that the system works as an I2S system, or I can use ESP Now, but as soon as I bring them together, I get the boot loop. There...

Hi, I have tried all manner of approaches to establish what’s causing this. Searches advise that the problem is caused by in illegal memory call, caused here: excvaddr:%200x0000004c in the error. I have removed the interrupts, changed the order of the setup, ensured enough memory remains. Tried diff...

Hi All, Need some help here. Running an ESP32 WROOM and using 2 x I2S interfaces (In (Microphone) & Out (Amplifier))), I2C interface and SPI interface. The I2C controls a Texas Instruments Class D Amplifier, while the SPI connects to an SD card for WAV & MP3 files. This functionality all works and I...