La104 Firmware Work Site

The LA104's community-driven ecosystem continues to grow, with ongoing contributions and forks maintaining different priorities. Key trends include improved modular architecture, expanded protocol support, and better integration with modern development environments.

Faster boot times and better menu navigation using the rotary wheels.

Beyond pre-built decoders for I2C, SPI, and UART, users can define for analysis. This is implemented by modifying specific source files and recompiling the firmware. la104 firmware work

For advanced users or when the DFU drive isn't stable, use dfuload :

The repository structure includes:

The LA104 is powered by an (Cortex-M4 with FPU). The stock firmware uses a custom UI and a proprietary PC client. But the open-source community (especially the DSLogic and libsigrok folks) has done incredible work reverse-engineering and rebuilding the firmware from scratch.

The FPGA alerts the MCU that the capture is complete. The MCU reads the data from the FPGA over a parallel or SPI bus. Beyond pre-built decoders for I2C, SPI, and UART,

The alternative firmware was designed with several goals:

When I picked up my LA104, it worked fine with the stock firmware. It captured I2C, SPI, and UART at reasonable speeds. But I couldn’t shake the feeling that this little device had untapped potential. So, I decided to roll up my sleeves and dive into the firmware. The stock firmware uses a custom UI and

Getting custom firmware onto the LA104 is trivial (thank you, DFU bootloader). Hold the button while plugging in USB, then run:

: Plug the LA104 into your computer via USB. It should appear as a new virtual disk drive. Clean the Drive