launch.json

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug (OpenOCD)",
            "cwd": "${workspaceRoot}",
            "executable": "${command:cmake.launchTargetPath}",
            "request": "launch",
            "type": "cortex-debug",
            "servertype": "openocd",
            "interface": "swd",
            "device": "STM32F205RG",
            "runToEntryPoint": "main",
            "svdFile": "${workspaceRoot}/resources/STM32F20x.svd",
            "configFiles": [
                "interface/wch-cmsis-dap.cfg",
                "target/stm32f2x.cfg"
            ],
            "preLaunchCommands": [
                "set mem inaccessible-by-default off",
                "monitor reset"
            ],
            "postLaunchCommands": [
                "monitor reset init",
                "monitor sleep 100"
            ],
            "rttConfig": {
                "enabled": true,
                "address": "auto",
                "clearSearch": false,
                "polling_interval": 20,
                "rtt_start_retry": 20000,
                "decoders": [
                    {
                        "label": "RTT channel 0",
                        "port": 0,
                        "timestamp": true,
                        "type": "console"
                    }
                ]
            }
        }
    ]
}