[Breaking Change] Change HCSR501 MQTT key to 'presence' (#710)

* Change HCSR501 MQTT key to 'presence'

docs/integrate/home_assistant.md

@@ -71,7 +71,7 @@ binary_sensor:
         name: "Bewegung_Schlafzimmer"
         #device_class: motion
         state_topic: "home/OpenMQTTGateway1/HCSR501toMQTT"
-        value_template: '{{ value_json["hcsr501"] }}'
+        value_template: '{{ value_json["presence"] }}'
         payload_on: "true"
         payload_off: "false"
 ```

docs/use/sensors.md

@@ -47,7 +47,7 @@ If you don't want to resend values that haven't changed you can set DS1820_ALWAY
 ### HCSR501
 A boolean value of the PIR sensors state is sent when a state change occurs. The length of time that the PIR stays in a triggered state depends on the PIR hardware and is not changed by OpenMQTTGateway.
 
-`home/OpenMQTTGateway/HCSR501toMQTT {"hcsr501":"false"}`
+`home/OpenMQTTGateway/HCSR501toMQTT {"presence":"false"}`
 
 You can have another PIN mirror the value of the PIR sensor output by adding the following to config_HCSR501.h
 This can be useful if you would like to connect an LED to turn on when motion is detected.

main/ZsensorHCSR501.ino

@@ -52,13 +52,13 @@ void MeasureHCSR501() {
     if (PresenceValue == HIGH) {
       if (pirState == LOW) {
         //turned on
-        HCSR501data.set("hcsr501", "true");
+        HCSR501data.set("presence", "true");
         pirState = HIGH;
       }
     } else {
       if (pirState == HIGH) {
         // turned off
-        HCSR501data.set("hcsr501", "false");
+        HCSR501data.set("presence", "false");
         pirState = LOW;
       }
     }