marlin/buildroot/share/PlatformIO/debugging/launch.json

/**
 * Remote debugging on STM32 using the "Cortex Debug" extension.
 *
 * Copy one or more of the configurations items below into .vscode/launch.json
 * to add those debug options to the PlatformIO IDE "Run & Debug" panel.
 *
 * Examples for BigTreeTech SKR 2 (USB) and Native Simulator. Modify for your own build.
 *
 * NOTE: The PlatformIO extension will remove items when regenerating launch.json.
 */
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug STM32 (ST-Link)",
            "request": "launch",
            "type": "cortex-debug",
            "servertype": "openocd",
            "cwd": "${workspaceRoot}",
            "showDevDebugOutput": false,
            "configFiles": [ "interface/stlink.cfg", "target/stm32f4x.cfg" ],
            "device": "stlink",
            "executable": "${workspaceRoot}/.pio/build/BIGTREE_SKR_2_USB_debug/firmware.elf",
            "openOCDLaunchCommands": [ "init", "reset init" ],
            "svdFile": "${env:HOME}/.platformio/platforms/ststm32@12.1.1/misc/svd/STM32F40x.svd",
        },
        {
            "name": "Debug Sim",
            "request": "launch",
            "type": "cppdbg",
            "cwd": "${workspaceRoot}",
            //"program": ".pio/build/simulator_linux_debug/MarlinSimulator",
            //"program": ".pio/build/simulator_windows/MarlinSimulator",
            "program": ".pio/build/simulator_macos_debug/MarlinSimulator",
            "miDebuggerPath": "/opt/local/bin/ggdb",
            "MIMode": "gdb"
        }
    ]
}