[英]Switch ON/OFF Relay from MQTT flespi using mongoose (javascript) + ESP32
我有一個項目來打開和關閉連接到ESP32的中繼板(使用Mongoose OS Javascript進行編程)。 現在,使用flespi MQTT,我想通過訂閱主題來打開和關閉繼電器。 我已經完成設置和配置flespi MQTT代理,該代理可以通過在flespi MQTT上鍵入任何消息來打開和關閉中繼板。
因為我是MQTT的新手,所以當我從flespi MQTT接收(訂閱)時,如何僅發出能夠打開和關閉繼電器的特定消息。 例如,“ ON Relay” =將打開繼電器,“ OFF Relay” =將關閉繼電器。 僅此消息將觸發板。
這是我的代碼:
load('api_config.js');
load('api_gpio.js');
load('api_mqtt.js');
load('api_net.js');
load('api_sys.js');
load('api_timer.js');
load('api_adc.js');
let currentState = 0,
relaypin = 4;
GPIO.set_mode(relaypin, GPIO.MODE_OUTPUT);
MQTT.sub('topic/#', function(conn, topic, msg) {
print('Topic', topic, 'message', msg);
print('ok');
currentState = 1 - currentState;
GPIO.write(relaypin, currentState);
print('Relay is = ' + (currentState ? 'OFF' : 'ON'));
}, null);
我已經解決了這個問題:
/*This command will trigger relay
ON
{
"actuator" : "relay1",
"state": 1
}
OFF
{
"actuator" : "relay1",
"state": 0
}
*/
load('api_config.js');
load('api_gpio.js');
load('api_mqtt.js');
load('api_net.js');
load('api_sys.js');
load('api_timer.js');
load('api_adc.js');
let relaypin = 4;
GPIO.set_mode(relaypin, GPIO.MODE_OUTPUT);
GPIO.write(relaypin, 1);
MQTT.sub('my/rainsensor', function(conn, topic, payload)
{
let test = JSON.parse(payload);
print('Topic:', topic, 'actuator type:', test.actuator, 'state:', test.state);
//Check if '1' received and trigger relay ON
if (1 === test.state)
{
GPIO.write(relaypin, 0);
print('Relay is = ON');
}
else if (0 === test.state)
{
GPIO.write(relaypin, 1);
print('Relay is = OFF');
}
else
{
print('WRONG COMMAND!!!');
}
}, null);
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