Hi EUA, I have basic concepts about Linux, compilers, Libraries rebuilding, etc. But I don't want fight with this. I think I will spend a lot of time doing this. The second option seems to be simpler - using ESP32 Serial 2. I still don't understand why I can't use Serial1 . I'm studying your code. A...

Hi EUA, I'm trying to test your analyzer (PC - Windows 10). I used Arduino IDE V 1.8.10 to compile and flash my ESP32 Dev Kit module Run PulseView - version 0.4.1 (64 Bits) Crystal Oscillator 14.318 MHz at GPIO23 For reference only (to others): https://sigrok.org/wiki/PulseView Pulse View downloads:...

Than I will use extra ram buffer to expand sampling on it. I am little sad about sampling speed which is limited to 20Msps. I found that If I use QSPI interface, I can sample up to 80Msps 4bit but I am not sure if it supports such a long RX reception. But found that Arduino-esp32 don't support QSPI...

Since we are reading (RX) from I2S, ESP32 expect external clock not use internal derived one. I pass this requirement via feeding a pin via generated external clock signal and routing to I2S clk pin. But after 20Mhz, it doesn't work proper. Hi EUA, I saw this on this topic: https://github.com/espre...

Hi EUA, Did you see this code ? esp32-camera/driver/camera.c https://github.com/espressif/esp32-camera/blob/1b8fdfe335b3c8c8b9e091e3615b0aee16946ef0/driver/camera.c https://github.com/espressif/esp32-camera/blob/b1c9712d11188771f28fe45aedf9c051db9b969e/driver/private_include/camera_common.h How FIFO...

Congratulations EUA ! I and my friend Rui Viana are studying to develop the same project! And you won! I will test your project and then post my results. I made one recent progress - I set I2S master clock up to 80 MHz (tested) ! Awesome. I2S BCK is derived from the master clock. https://www.esp32.c...

Hi Baldhead, I think the I2S peripheral of the ESP32, one of the most complex. I´m studying it for a long time. I suggest you test one I2S interface with DMA full test. OK ? Then go to test another. Did you see this code ? esp32-camera/driver/camera.c https://github.com/espressif/esp32-camera/blob/1...

"Board is a personalized design"
Post the schematic diagram of this board.
There are some restrictions on the use of the SPI interface on ESP32.
It may be that your problem is violating these restrictions.

Hi,
Yo can not read negative voltages with the ESP32 ADC converter.
Only positive voltages.
You can invert the voltage with an Operational amplifier.

Hi, interesting project!
May you post the code?
Thanks.