CherryDAP is an embedded firmware project that implements a CMSIS-DAP v2.1 debug probe (DAPLink) based on the CherryUSB stack and ARMmbed DAPLink reference code. It supports SWD and JTAG debugging protocols, a USB-to-UART bridge (CDC ACM), and optional features like SWO trace, custom HID commands, and a UF2 bootloader for firmware updates. The repository contains multiple hardware-specific projects targeting different microcontrollers (HPMicro HPM5301, Bouffalo Lab BL616, Espressif ESP32-S3) and two commercial probe variants (HSLink-Lite and HSLink-Pro). The HSLink-Pro variant adds advanced capabilities: programmable target voltage, NeoPixel LED, multi-function button, settings persistence via FlashDB, and a two-slot bootloader for fail-safe upgrades. The core DAP protocol handling is shared across all projects, while each platform provides its own pin configuration, I/O drivers (GPIO bit-bang or SPI-based protocol emulation), and USB descriptors. The architecture follows a monolithic firmware pattern per project, with a main loop that processes USB requests and handles UART data forwarding. The codebase demonstrates solid embedded engineering practices, including SPI-based protocol emulation for high-speed SWD/JTAG, a clean separation of protocol logic from hardware abstraction, and a feature-rich bootloader. However, there is notable code duplication across projects (e.g., SWD/JTAG I/O files, USB2UART implementations) which increases maintenance burden. The repository is actively maintained with recent commits, CI workflows, and documentation.