Add NFC reader

hosts/iron/services/esphome/devices/kueche-leiste.yaml

@@ -32,7 +32,6 @@ wifi:
   domain: .iot.bw.jalr.de
   enable_on_boot: True
   fast_connect: On
-  output_power: 8.5
 
 esp32_ble_tracker:
   scan_parameters:
@@ -92,3 +91,26 @@ binary_sensor:
         - light.toggle:
             id: led_light
     internal: True
+
+spi:
+  - id: spi_bus_main
+    clk_pin: GPIO21
+    mosi_pin: GPIO10
+    miso_pin: GPIO20
+
+pn532_spi:
+  spi_id: spi_bus_main
+  # FIXME: GPIO9 is a strapping pin
+  cs_pin: GPIO9
+  update_interval: 1s
+  on_tag:
+    then:
+      - homeassistant.tag_scanned: !lambda 'return x;'
+      - switch.turn_on: buzzer
+      - delay: 250ms
+      - switch.turn_off: buzzer
+
+switch:
+  - platform: gpio
+    pin: GPIO7
+    id: buzzer