GitHub – choihimchan/linkscope-bpu-uart-analyzer

High-speed UART analyzer using ESP32-S3 + PC GUI.

Real-time capture, framing, statistics, and visualization for embedded debugging.

• Up to 921600 baud UART capture
• COBS framed binary protocol
• Real-time throughput graph
• RAW hex inspector
• Auto frame decoder
• Health / statistics monitoring
• Windows standalone EXE
• Works with STM32 / ESP32 / NRF / MCU UART TX

[ Target MCU TX ] –> [ ESP32-S3 RX ] –> USB –> [ PC Analyzer ]

Any device with UART TX:

• STM32
• ESP32 / ESP8266
• NRF52 / NRF53
• RP2040
• Arduino
• Custom MCUs

This guide explains how to use LinkScope UART Analyzer step-by-step.

1. Open Arduino IDE

2. Open firmware file:

   firmware/esp32_s3/LinkScope_UART_Analyzer_v0.1.0_esp32_s3.ino

3. Select board:

   Tools → Board → ESP32 Arduino → ESP32S3 Dev Module

4. Select COM port

5. Click Upload

Wait until upload is finished.

Connect your target MCU to ESP32-S3:

Target MCU TX —> ESP32-S3 GPIO18 (RX)
Target MCU GND —> ESP32-S3 GND

(Default RX pin: GPIO18)

Examples:

STM32 TX → GPIO18
ESP32 TX → GPIO18
Arduino TX → GPIO18

No firmware change needed on target MCU.
Just connect TX line.

1. Go to:

   releases/

2. Run:

   LinkScope_UART_Analyzer_v0.1.0_windows_x64.exe

No installation required.

1. Plug ESP32-S3 into PC

2. Check COM port in Windows Device Manager

3. In Analyzer:

   • Click Refresh
   • Select COM port
   • Set Baud Rate (default: 921600)
   • Click Connect

If connected, status will show “Connected”.

After connection:

Press:

S → Start
P → Stop
C → Clear

Or use GUI buttons.

UART data will appear in real-time.

Make sure target MCU baud matches analyzer.

Example (115200):

Type:

B115200

Press Enter, then press S.

If you want to run from source:

pip install pyserial matplotlib
python host/LinkScope_UART_Analyzer_v0.1.0.py

Example firmware:

examples/hello_demo_wroom_tx/

Use this to test basic UART transmission.

No data?

Check:

• TX/GND wiring
• Correct COM port
• Baud rate match
• ESP32-S3 firmware uploaded
• USB cable supports data

If still not working, open an Issue.

Beginner guide:

docs/usage.md

• UART data loss debugging
• Throughput benchmarking
• Protocol reverse engineering
• Production testing
• Factory logging

pip install pyinstaller
pyinstaller --onefile host/LinkScope_UART_Analyzer_v0.1.0.py

MIT License