RP2040-GEEK is a development board for engineers and hobbyists, featuring an onboard USB-A interface, a 1.14 inch color IPS LCD display, a TF card slot, and other peripherals. It provides dedicated firmware options for SWD, UART, and I2C ports to simplify target interaction. - Debug and target connection: Onboard 3PIN SWD port for connecting the debugged target board. Standard CMSIS-DAP interface can debug most ARM-based microcontrollers, works with OpenOCD and other CMSIS-DAP supporting tools, and follows the Raspberry Pi 3PIN Debug Connector Specification. - Communication and testing: Onboard 3PIN USB to UART bridge. Onboard 4PIN I2C port for the testing target board. - Display and storage: Onboard 1.14 inch 240x135 pixel 65K color IPS LCD display. TF card slot provides expandable storage for logging and data. - Applications: 1) Rapid ARM MCU debugging and firmware loading using CMSIS-DAP with OpenOCD. 2) Target board development and peripheral testing via USB-UART and I2C, with real-time status on the built-in LCD and data logging to TF card. 3) Education and prototyping environments that require multiple interfaces in a single board.