nixos-configs/devices/homie/modules/home-assistant/firmware.nix

{config, ...}: {
  services.esphome = {
    secretsFile = config.sops.secrets.esphome.path;

    firmwareConfigs = {
      "esp1" = {
        packages.remote_package_files = {
          url = "https://github.com/esphome/firmware";
          files = ["voice-assistant/m5stack-atom-echo.adopted.yaml"];
          ref = "0f6fad0860b8bd2c251162abde5064be1ae29546";
        };

        # Enable Home Assistant API
        api.encryption.key = "!secret api_key";

        ota = [
          {
            platform = "esphome";
            password = "!secret ota_pass";
          }
        ];

        wifi = {
          ssid = "!secret wifi_ssid";
          password = "!secret wifi_password";

          manual_ip = {
            # Set this to the IP of the ESP
            static_ip = "192.168.0.92";
            # Set this to the IP address of the router. Often ends with .1
            gateway = "192.168.0.1";
            subnet = "255.255.255.0";
          };

          # Enable fallback hotspot (captive portal) in case wifi connection fails
          ap = {
            ssid = "Esp1 Fallback Hotspot";
            password = "!secret ap_fallback";
          };
        };
      };
    };
  };
}