device tree overlay for auto-configuring the BME280 on i2c7 on an rk3399

bme_on_i2c7.nix

{  
  hardware.deviceTree.overlays = [
    {
      name = "bme280-on-i2c7";
      dtsText = ''
        /dts-v1/;
        /plugin/;

        / {
          compatible = "rockchip,rk3399";

          fragment@0 {
            target = <&i2c7>;
            __overlay__ {
              status = "okay";
            };
          };

          fragment@1 {
            target = <&i2c7>;
            __overlay__ {
              bme280@76 {
                compatible = "bosch,bme280";
                reg = <0x76>;
                status = "okay";
              };
            };
          };
        };
      '';
    }
  ];
}