0
我嘗試使用Arduino IDE幫助下我的ESP32板中的基本pubsub示例連接到AWS IoT。當在Arduino IDE中使用ESP32連接到AWS IoT時，mbedtls_net_connect返回-0x52
作爲一個基本的例子它連接到AWS的IoT和發佈消息，但是當我給一個靜態IP到程序它連接到與所指定的IP地址的WiFi（我還分配一個靜態IP到MAC在我的路由器板）的地址，但它沒有公佈消息，並給了我以下錯誤：
試圖連接到SSID：RCB岩石!!!! 連接到wifi
E（37583）aws_iot：失敗！ mbedtls_net_connect返回-0x52
E（37583）AWS_IOT：錯誤（-23）連接到*********** iot.eu-west-2.amazonaws.com:8883，。
正嘗試重新連接
我使用下面的代碼：
#include <AWS_IOT.h>
#include <WiFi.h>
AWS_IOT hornbill;
char WIFI_SSID[]="RCB Rocks!!!!";
char WIFI_PASSWORD[]="********";
char HOST_ADDRESS[]="************.iot.eu-west-2.amazonaws.com";
char CLIENT_ID[]= "1008";
char TOPIC_NAME[]= "smk";
IPAddress ip(192, 168, 0, 20);
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);
int status = WL_IDLE_STATUS;
int tick=0,msgCount=0,msgReceived = 0;
char payload[512];
char rcvdPayload[512];
void mySubCallBackHandler (char *topicName, int payloadLen, char *payLoad) {
strncpy(rcvdPayload,payLoad,payloadLen);
rcvdPayload[payloadLen] = 0;
msgReceived = 1;
}
void setup() {
Serial.begin(115200);
delay(2000);
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(WIFI_SSID);
WiFi.config(ip,gateway,subnet);
WiFi.mode(WIFI_STA);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
// wait 5 seconds for connection:
delay(5000);
}
Serial.println("Connected to wifi");
if(hornbill.connect(HOST_ADDRESS,CLIENT_ID)== 0) {
Serial.println("Connected to AWS");
delay(1000);
if(0==hornbill.subscribe(TOPIC_NAME,mySubCallBackHandler)) {
Serial.println("Subscribe Successfull");
} else {
Serial.println("Subscribe Failed, Check the Thing Name and Certificates");
while(1);
}
} else {
Serial.println("AWS connection failed, Check the HOST Address");
while(1);
}
delay(2000);
}
void loop() {
if(msgReceived == 1) {
msgReceived = 0;
Serial.print("Received Message:");
Serial.println(rcvdPayload);
}
if(tick >= 5) {
// publish to topic every 5seconds
tick=0;
sprintf(payload,"Hello from hornbill ESP32 : %d",msgCount++);
if(hornbill.publish(TOPIC_NAME,payload) == 0) {
Serial.print("Publish Message:");
Serial.println(payload);
} else {
Serial.println("Publish failed");
}
}
vTaskDelay(1000/portTICK_RATE_MS);
tick++;
}
我發現這個AWS物聯網SDK的Arduino的ESP32 here，我跟着我this website中給出的故障。