More examples (#23)

Needed an example for an ESP32 and MAX485-chipset. Not pretty but it's
something.

README.md

@@ -142,7 +142,7 @@ nibegw:
       data: [
             0x06, # Temperature
             0x14, # degrees low
-            0x00, # degrees hight
+            0x00, # degrees high
       ]
 ```
 

examples/esp32_max485.yaml

@@ -0,0 +1,67 @@
+esphome:
+  name: nibegw
+  comment: Nibegw
+  platform: ESP32
+  board: lolin_d32
+# Example is for a LolinD32 Board, use your own from here: https://esphome.io/components/esp32.html
+
+# No API if you are using MQTT, password is optional
+api:
+  password: !secret api_password
+
+ota:
+  password: !secret ota_password
+
+logger:
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+  power_save_mode: none
+  #fast_connect: true # --> Use fast_connect if you connecting to a hidden network
+
+  # Optional: Enable fallback hotspot (captive portal) in case wifi connection fails
+  ap:
+    ssid: "ESP D32 Nibe Proxy AP"
+    password: !secret ap_password
+
+# Load nibe component
+external_components:
+  - source: github://elupus/esphome-nibe
+
+uart:
+  rx_pin: GPIO16
+  tx_pin: GPIO17
+  baud_rate: 9600
+
+# Configure NibeGW
+nibegw:
+  udp:
+    # The target address(s) to send data to. May be a multicast address.
+    target:
+      - ip: 192.168.255.254
+        port: 10090
+
+    # List of source address to accept data from, may be empty for no filter
+    source:
+      - 192.168.255.254
+
+  acknowledge:
+    - MODBUS40
+
+  # Constant replies to certain requests cabe made
+  constants:
+    - address: MODBUS40
+      token: ACCESSORY
+      data: [
+            0x0A, # MODBUS version low
+            0x00, # MODBUS version high
+            0x01, # MODBUS address?
+      ]
+
+# Some helper functions to restart ESPHome from HA
+button:
+- platform: restart
+  name: Nibegw Restart
+- platform: safe_mode
+  name: Nibegw Safe Mode Boot