esp-idf/components/freemodbus/docs/_static/modbus_docs_versions.js

var DOCUMENTATION_VERSIONS = {
    DEFAULTS: { has_targets: true,
                supported_targets: [ "esp32", "esp32s2", "esp32s3", "esp32c3" ]
              },
    VERSIONS: [
        { name: "latest" },
        { name: "v1.0.1", old:false },
        { name: "v1.0.0", old:true }
    ],
    IDF_TARGETS: [
       { text: "ESP32", value: "esp32"},
       { text: "ESP32-S2", value: "esp32s2"},
       { text: "ESP32-S3", value: "esp32s3"},
       { text: "ESP32-C3", value: "esp32c3"}
    ]
};