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Fix esp example

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This commit is contained in:
Nick O'Leary 2015-09-09 10:32:35 +01:00
parent 461cbdb6e8
commit aa9afc7b44
1 changed files with 25 additions and 23 deletions
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48
examples/esp8266/mqtt_esp8266.ino → examples/mqtt_esp8266/mqtt_esp8266.ino
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@ -1,22 +1,25 @@
/* /*
Basic ESP8266 MQTT example Basic ESP8266 MQTT example
This sketch demonstrates the capabilities of the pubsub library in combination with the ESP8266 board/library. This sketch demonstrates the capabilities of the pubsub library in combination
with the ESP8266 board/library.
It connects to an MQTT server then: It connects to an MQTT server then:
- publishes "hello world" to the topic "outTopic" - publishes "hello world" to the topic "outTopic" every two seconds
- subscribes to the topic "inTopic", printing out any messages - subscribes to the topic "inTopic", printing out any messages
it receives. NB - it assumes the received payloads are strings not binary it receives. NB - it assumes the received payloads are strings not binary
- If the first character of the topic "inTopic" is an 1, switch ON the ESP Led, else switch it off - If the first character of the topic "inTopic" is an 1, switch ON the ESP Led,
else switch it off
It will reconnect to the server if the connection is lost using a blocking It will reconnect to the server if the connection is lost using a blocking
reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to reconnect function. See the 'mqtt_reconnect_nonblocking' example for how to
achieve the same result without blocking the main loop. achieve the same result without blocking the main loop.
To install the ESP8266 board To install the ESP8266 board, (using Arduino 1.6.4+):
Install Arduino 1.6.4+ (tested with Arduino 1.6.5) - Add the following 3rd party board manager under "File -> Preferences -> Additional Boards Manager URLs":
json file from https://github.com/arduino/Arduino/wiki/Unofficial-list-of-3rd-party-boards-support-urls added in "File -> Preferences -> Additional Boards Manager URLs" http://arduino.esp8266.com/stable/package_esp8266com_index.json
Open the "Tools -> Board -> Board Manager" and click install for the ESP8266" - Open the "Tools -> Board -> Board Manager" and click install for the ESP8266"
Select your ESP8266 in "Tools -> Board" - Select your ESP8266 in "Tools -> Board"
*/ */
@ -103,22 +106,21 @@ void reconnect() {
delay(5000); delay(5000);
} }
} }
}
void loop() {
void loop() { if (!client.connected()) {
reconnect();
}
client.loop();
if (!client.connected()) { long now = millis();
reconnect(); if (now - lastMsg > 2000) {
} lastMsg = now;
client.loop(); ++value;
snprintf (msg, 75, "hello world #%ld", value);
long now = millis(); Serial.print("Publish message: ");
if (now - lastMsg > 2000) { Serial.println(msg);
lastMsg = now; client.publish("outTopic", msg);
++value;
snprintf (msg, 75, "hello world #%ld", value);
Serial.print("Publish message: ");
Serial.println(msg);
client.publish("outTopic", msg);
}
} }
} }