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Add feature to disable/enable buttons by MQTT #1322

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Add feature to disable/enable buttons by MQTT #1322

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55 changes: 55 additions & 0 deletions code/espurna/button.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,56 @@ void buttonMQTT(unsigned char id, uint8_t event) {
mqttSend(MQTT_TOPIC_BUTTON, id, payload, false, false); // 1st bool = force, 2nd = retain
}

// You can disable/enable buttons by MQTT. Just public message "0" or "1" to topic <hostname>/button/#/set
void _buttonMqttCallback(unsigned int type, const char * topic, const char * payload) {
if (type == MQTT_CONNECT_EVENT) {
// Subscribe to own /set topic
char button_topic[strlen(MQTT_TOPIC_BUTTON) + 3];
snprintf_P(button_topic, sizeof(button_topic), PSTR("%s/+"), MQTT_TOPIC_BUTTON);
mqttSubscribe(button_topic);
DEBUG_MSG_P(PSTR("[Button] subscribing to MQTT topic %s \n"), MQTT_TOPIC_BUTTON);
}
if (type == MQTT_MESSAGE_EVENT) {
String t = mqttMagnitude((char *) topic);
// Match topic
if (t.startsWith(MQTT_TOPIC_BUTTON)) {
// Get button ID
unsigned int id = t.substring(strlen(MQTT_TOPIC_BUTTON)+1).toInt();
char mode = payload[0]-48; // button mode. currently enabled or disablesd. ASCII "0" is a 48.
if (mode == 0) {
_buttons[id].relayID = 0; // disable button-realy mapping
} else {
switch (id) { // restoring button-relay mapping from hardcoded preprocessor constants
case 0:
_buttons[id].relayID = BUTTON1_RELAY;
break;
case 1:
_buttons[id].relayID = BUTTON2_RELAY;
break;
case 2:
_buttons[id].relayID = BUTTON3_RELAY;
break;
case 3:
_buttons[id].relayID = BUTTON4_RELAY;
break;
case 4:
_buttons[id].relayID = BUTTON5_RELAY;
break;
case 5:
_buttons[id].relayID = BUTTON6_RELAY;
break;
case 6:
_buttons[id].relayID = BUTTON7_RELAY;
break;
case 7:
_buttons[id].relayID = BUTTON8_RELAY;
break;
}
}
DEBUG_MSG_P(PSTR("[Button] Button id %d, mode %d, relayID now is %u\n"), id, mode, _buttons[id].relayID);
}
}
}
#endif

#if WEB_SUPPORT
Expand Down Expand Up @@ -212,6 +262,11 @@ void buttonSetup() {
// Register loop
espurnaRegisterLoop(buttonLoop);

// Register MQTT loop for set button mode by MQTT
#if MQTT_SUPPORT
mqttRegister(_buttonMqttCallback);
#endif

}

void buttonLoop() {
Expand Down