sigrok-pico

Use a Raspberry Pi PICO (RP2040) as a logic analyzer and oscilloscope with sigrok.

Status

======= Please start with the Getting Started page : https://github.com/pico-coder/sigrok-pico/blob/main/GettingStarted.md

Merged to mainline sigrok (September 2023)

Install from sigrok.org/downloads. PulseView 0.4.2 and sigrok-cli 0.7.2 do not support sigrok-pico.

Quick Links

Document	Description
USER_GUIDE.md	Getting started and analyzer operations
TECHNICAL.md	Serial protocol and build instructions
pulseview/Readme.md	Windows installer

Directory Structure

sigrok-pico/
├── pico_pgen/              # Digital function generator for testing
├── pico_sdk_sigrok/        # RP2040 firmware (see release/ for UF2 files)
└── pulseview/              # Windows installer (unofficial)

Overview

This project implements a sigrok driver for the Raspberry Pi PICO RP2040 using the PICO SDK CDC serial library. It works with both PulseView (GUI) and sigrok-cli (command-line):

• 21 digital channels (D2-D22)
• 3 analog channels (A0-A2)
• Mixed-mode capture (combined digital + analog)

Using with PulseView

PulseView is the recommended graphical interface for sigrok-pico:

1. Install PulseView from sigrok.org/downloads
2. Flash the PICO with the appropriate UF2 firmware
3. In PulseView, select "raspberrypi_pico" driver and configure the serial port

Note: PulseView 0.4.2 does not support sigrok-pico. Use a newer version or the unofficial Windows installer.

Firmware

Precompiled

Pre-compiled UF2 files are available in pico_sdk_sigrok/release/:

File	Description
pico_baseline.uf2	Standard firmware
pico_dig26.uf2	26-channel digital
pico_dig32.uf2	32-channel digital
pico2_*.uf2	PICO 2 variants

Build Your Own

Building is straightforward using the VSCode extension:

1. Install the "Raspberry Pi Pico Project" extension in VSCode
2. Import the project using the extension
3. Select the latest SDK version when prompted
4. Select the board type (e.g., pico or pico2)
5. Click "Run Project (USB)" to build and flash

For command-line builds and more details, see TECHNICAL.md.

License

See LICENSE for details.