ESP32 LogicAnalyzer A SUMP compatible 16Bit Logic Analyzer for ESP32 MCUs.

• Use Arduino to compile and flash your ESP32.
• Uses ESP32 I2S DMA and could capture speeds up to 20 Mhz.
• Support 8 bit and 16 bit operations.
• Maximum 128k samples. (Even using 8bit capturing mode.)
• RLE compression supported.
• Analog input is NOT available.
• WROOVER modules support 2M samples but only up to 2 Mhz due bandwith limit on PSRAM access. Under development.
• Default OLS port is UART0 and default baudrate is 912600.
• You can use UART2 and or higher baud rates for high speed OLS communication by altering the lines at top of the header file...
• WARNING:
  • For OLS port at UART0
    • Set "Core Debug Level"=None before compiling code at arduino, specially for > 10Mhz capture operations.
  • GPIO23 used for I2S input clk and GPIO22 LEDC clk output. Don't use those for IO or change them and connect them to another unused pins at code.

If you like it, why not to say thanks or support via Patreon

This project steals some code from esp32-cam-demo for I2S DMA and Arduino Logic Analyzer as SUMP protocol "template".

Quick start guide

1. Use PlatformIO (in VS Code) to open the project folder
2. Modify ESP32_LogicAnalyzer.h for make a fit to your board.
3. Build the project and flash with PlatformIO
4. Connect cfg.gpio_clk_in (default pin23 )and cfg.gpio_clk_out (default pin22).
5. Open PulseView with pulseview -D -d ols:conn=/dev/ttyUSB0::serialcomm=921600/8n1 ,or from gui, connect device and select Openbench Logic Sniffer & SUMP compatibles (ols)
6. Channels vs PINS are also available at setup() function. You can also change ports/baud from ESP32_LogicAnalyzer.h file. Please check it out before use.