μLA: Micro Logic Analyzer for RP2040

Related tags

Utilities rust embedded logic-analyzer rp2040
Overview

μLA: Micro Logic Analyzer

SUMP/OLS compatible logic analyzer firmware for RP2040 based boards.

Features

  • 16 channels
  • 100 MHz sampling rate, 1 sample per sys tick
  • 200 KB sample memory
  • Fast triggers using PIO
  • Input channels mapped to GPIO 0-15

Supported hardware

  • Raspberry Pi Pico
  • RP2040-Zero
  • Virtually all RP2040 based boards with USB connection and GPIO 0-15 available
  • Bring your own RP2040 hardware with proper frontend and protection

Installation

  1. Download latest firmware build from Releases page
  2. Hold the BOOTSEL button while connecting your board to the computer
  3. Copy firmware file downloaded earlier to the RPi-RP2 disk
  4. Use PulseView of SigrokCli to connect to probe
  5. Enjoy

Client software

PulseView

PulseView is a Qt based logic analyzer GUI for sigrok.

Select Openbench Logic Sniffer & SUMP compatible protocol when connecting to μLA.

Protocol selection Connect window
uLA: Micro Logic Analyzer uLA: Micro Logic Analyzer

SigrokCli

SigrokCli is a command-line frontend for sigrok.

Scan for devices

$ sigrok-cli -d ols:conn=/dev/tty.usbmodem_ula_1 --scan

  The following devices were found:
  ols - uLA: Micro Logic Analyzer with 16 channels: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Sample two 10 MHz square waves with 90° phase shift

$ sigrok-cli -d ols:conn=/dev/tty.usbmodem_ula_1 
    -O ascii:charset='_`\/'
    --config samplerate=100m
    --samples 70

  libsigrok 0.5.2
  Acquisition with 16/16 channels at 100 MHz
  0:``\____/`````\___/`````\___/`````\___/`````\___/`````\___/`````\___/``
  1:____/`````\____/````\____/````\____/````\____/````\____/````\____/````
  2:______________________________________________________________________

Building firmware

  1. Install rustup by following the instructions at https://rustup.rs
  2. Install Cortex-M0, M0+, and M1 (ARMv6-M architecture) target: rustup target add thumbv6m-none-eabi
  3. Install LLVM tools: rustup component add llvm-tools-preview
  4. Install cargo-binutils: cargo install cargo-binutils (Note: on some Linux distros (e.g. Ubuntu) you may need to install the packages build-essential, gcc-arm-none-eabi, libssl-dev and pkg-config prior to installing cargo-binutils)
  5. Install elf2uf2: cargo install elf2uf2-rs
  6. Clone this repo: git clone [email protected]:dotcypress/ula.git && cd ula
  7. Hold the BOOTSEL button while connecting your board to the computer
  8. Flash microcontroller: cargo run --release

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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Comments
  • I couldn't make it work on macOS.

    I couldn't make it work on macOS.

    Hi, first of all, thank you for making this project, and thank you for making it publicly available for everyone.

    I tried to use it but couldn't make it work. I'm probably missing something. I hope you can guide me. Here are the steps,

    I used these files, binary file : https://github.com/dotcypress/ula/releases/download/0.0.1/ula_0.0.1.uf2 PulseView: https://sigrok.org/download/binary/pulseview/PulseView-0.4.2.dmg

    (This one is 24 bytes; definitely, the link is broken. https://sigrok.org/download/binary/pulseview/PulseView-NIGHTLY.dmg) (file content is <h1>404: Not Found</h1>) : )

    I'm using macOS ventura 13.2.1

    • I copied the binary to the Raspberry Pi Pico.
    • Then checked if serial port is there,
    $ ls /dev/tty.usb*
/dev/tty.usbmodem_ula_1
    • Then opened the PulseView connect to device page, and selected device below
    Screenshot 2023-04-14 at 19 16 47
    • I don't know how to select the device. Since it's not on the list.
    Screenshot 2023-04-14 at 19 24 59

    Which PulseView version did you test on macOS?

    Thanks in advance.

    opened by MrGreensWorkshop 4
  • Suggest using /dev/serial/by-id

    Suggest using /dev/serial/by-id

    I'm not sure you want to merge this, because I don't know if /dev/serial/by-id is a POSIX or a linux path; maybe this fix only helps linux users?

    Either way, the example in the README did not work for me, because the device TTY ends up at /dev/ttyACM0 on my machine.

    The command below resolves the device via the /dev/serial filesystem tree.

    Thanks for building a cool tool!

    documentation 
    opened by jakewins 1
Releases(0.0.2)
Owner
Vitaly Domnikov
🇺🇦🇺🇸 OSS Advocate, console.log Expert.
Vitaly Domnikov
GitHub
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