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.
- For OLS port at UART0
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".
- Use PlatformIO (in VS Code) to open the project folder
- Modify ESP32_LogicAnalyzer.h for make a fit to your board.
- Build the project and flash with PlatformIO
- Connect cfg.gpio_clk_in (default pin23 )and cfg.gpio_clk_out (default pin22).
- 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) - 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.