前提・実現したいこと
MQTT通信でテストデータをpublishしたいのですが、ボード(ESP8266)に書き込むとシリアルモニタにstackと出て動作しません。
wifiに接続してセンサーデータを取得したり、NTPの取得をするだけだと問題なくシリアルモニタに出力されます。
MQTT通信を試みようとするときのみこのようなことが起きます。
発生している問題・エラーメッセージ
arduino IDEのシリアルモニタに以下のように出力されます。
Connecting to Buffalo-●-●●●● ..... WiFi connected IP address: ●●●.●●●.●●.●● Connecting to MQTT... Exception (3): epc1=0x40206220 epc2=0x00000000 epc3=0x00000000 excvaddr=0x4023719c depc=0x00000000 ctx: cont sp: 3ffffd60 end: 3fffffd0 offset: 01a0 >>>stack>>> 3fffff00: 00000009 2d6f6c61 31302d47 fe003035 3fffff10: feefeffe feefeffe feefeffe 3fffffa0 3fffff20: 3ffeeb74 0000000b 00000003 4020406a 3fffff30: 40104ab2 000030c9 00000100 3ffeec34 3fffff40: 3ffe88a0 0000000d 3ffeeb74 3ffeec34 3fffff50: 3fffdad0 3ffeea14 3ffeeb74 40203cd4 3fffff60: 3ffe8b8c 3ffeea14 3ffeea14 40203a96 3fffff70: 3ffe88c4 3ffeeb28 3ffeeb74 40203ed0 3fffff80: 280ba8c0 00ffffff 3ffeeb74 3ffeec34 3fffff90: 3fffdad0 3ffeea14 3ffeeb74 4020262c 3fffffa0: 3fffdad0 00000000 3ffeec2c 40202659 3fffffb0: 3fffdad0 00000000 3ffeec2c 40204468 3fffffc0: feefeffe feefeffe 3ffe8504 40100739 <<<stack<<< ⸮⸮⸮⸮?)⸮⸮
該当のソースコード
/*************************************************** Adafruit MQTT Library ESP8266 Example Must use ESP8266 Arduino from: https://github.com/esp8266/Arduino Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Tony DiCola for Adafruit Industries. MIT license, all text above must be included in any redistribution ****************************************************/ #include <ESP8266WiFi.h> #include <Adafruit_MQTT.h> #include <Adafruit_MQTT_Client.h> /************************* WiFi Access Point *********************************/ #define WLAN_SSID "SSID" #define WLAN_PASS "pass" /***************************** Your Setup ************************************/ #define YOUR_SERVER "●●.●●.●●●.●●" #define YOUR_SERVERPORT 1883 #define YOUR_USERNAME "test" #define YOUR_PASSWORD "test" /************ Global State (you don't need to change this!) ******************/ // Create an ESP8266 WiFiClient class to connect to the MQTT server. WiFiClient client; // Store the MQTT server, client ID, username, and password in flash memory. // This is required for using the Adafruit MQTT library. const char MQTT_SERVER[] PROGMEM = YOUR_SERVER; const char MQTT_CLIENTID[] PROGMEM = __TIME__ "_test_client_id"; const char MQTT_USERNAME[] PROGMEM = YOUR_USERNAME; const char MQTT_PASSWORD[] PROGMEM = YOUR_PASSWORD; // Setup the MQTT client class by passing in the WiFi client and MQTT server and login details. Adafruit_MQTT_Client mqtt(&client, MQTT_SERVER, YOUR_SERVERPORT, MQTT_CLIENTID, MQTT_USERNAME, MQTT_PASSWORD); /****************************** Topic ***************************************/ // Setup a pubulisher & subscriber. const char TEST_TOPIC[] PROGMEM = "orz"; Adafruit_MQTT_Publish testPublisher = Adafruit_MQTT_Publish(&mqtt, TEST_TOPIC); //Adafruit_MQTT_Subscribe testSubscriber = Adafruit_MQTT_Subscribe(&mqtt, TEST_TOPIC); /*************************** Sketch Code ************************************/ void setup() { Serial.begin(9600); delay(10); Serial.println(F("MQTT demo")); // Connect to WiFi access point. Serial.println(); Serial.println(); Serial.print("Connecting to "); Serial.println(WLAN_SSID); WiFi.begin(WLAN_SSID, WLAN_PASS); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(); Serial.println("WiFi connected"); Serial.println("IP address: "); Serial.println(WiFi.localIP()); // Setup MQTT subscription. // mqtt.subscribe(&testSubscriber); } uint32_t x=0; void loop() { // Ensure the connection to the MQTT server is alive (this will make the first // connection and automatically reconnect when disconnected). See the MQTT_connect // function definition further below. MQTT_connect(); // this is our 'wait for incoming subscription packets' busy subloop // Adafruit_MQTT_Subscribe *subscription; // while ((subscription = mqtt.readSubscription(1000))) { // if (subscription == &testSubscriber) { // Serial.print(F("Got: ")); // Serial.println((char *)testSubscriber.lastread); // } // } testPublisher.publish("test"); delay(1000); } // Function to connect and reconnect as necessary to the MQTT server. // Should be called in the loop function and it will take care if connecting. void MQTT_connect() { int8_t ret; // Stop if already connected. if (mqtt.connected()) { return; } Serial.print("Connecting to MQTT... "); while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected Serial.println(mqtt.connectErrorString(ret)); Serial.println(ret); Serial.println("Retrying MQTT connection in 5 seconds..."); mqtt.disconnect(); delay(5000); // wait 5 seconds } Serial.println("MQTT Connected!"); }
試したこと
Serial.begin()を115200や9600で試してもシリアルモニタにstackが出ます。
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2019/02/08 07:00