我正在尝试使用https://github.com/heskew/aws-sdk-arduino将基于ESP8266的WeMos D1 mini连接到Amazon Web Service AWS IoT。
然而,当我刷新设备时,我得到403回复,并显示以下消息: “凭证应该用于纠正服务:'execute-api'。”
更改
this->awsService = "iotdata";
到
this->awsService = "execute-api";
AmazonIOTClient.cpp 中的导致404: “找不到与http方法POST相匹配的路由事件/ my-thing / shadow的方法。” 并且,根据this thread,服务应该是'iotdata'以便成功请求。
是否有人遇到同样的问题并找到了让它运行的方法?如果是这样,将非常感谢帮助。谢谢!
这里是示例的完整代码:
#include <AmazonIOTClient.h>
#include <Esp8266AWSImplementations.h>
#include <AWSFoundationalTypes.h>
#include "keys.h"
const int sleepTimeS = 30;
void printWiFiData();
void printCurrentNetwork();
void publish(const char *topic, String data);
void publishToAWS();
void setup() {
Serial.begin(9600);
Serial.println("Started!");
publishToAWS();
ESP.deepSleep(sleepTimeS * 1000000);
}
void loop() {
}
void printWiFiData() {
// IP address
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
// MAC address
byte mac[6];
WiFi.macAddress(mac);
Serial.print("MAC address: ");
Serial.print(mac[5], HEX);
Serial.print(":");
Serial.print(mac[4], HEX);
Serial.print(":");
Serial.print(mac[3], HEX);
Serial.print(":");
Serial.print(mac[2], HEX);
Serial.print(":");
Serial.print(mac[1], HEX);
Serial.print(":");
Serial.println(mac[0], HEX);
}
void printCurrentNetwork() {
// SSID
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// signal strength:
Serial.print("signal strength (RSSI): ");
Serial.println(WiFi.RSSI());
}
void publish(const char *topic, String data) {
AmazonIOTClient iotClient;
ActionError actionError;
Esp8266HttpClient httpClient;
Esp8266DateTimeProvider dateTimeProvider;
Serial.println();
Serial.print("Connecting to ");
Serial.print(wifiSsid);
Serial.println("...");
WiFi.begin(wifiSsid, wifiPwd);
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(50);
}
Serial.println("");
Serial.println("WiFi connected");
printCurrentNetwork();
printWiFiData();
delay(50);
Serial.println("Initializing IoT client...");
iotClient.setAWSRegion(awsIotRegion);
iotClient.setAWSEndpoint(awsIotEndpoint);
iotClient.setAWSDomain(awsIotDomain);
iotClient.setAWSPath("/things/my-thing/shadow");
iotClient.setAWSKeyID(awsKeyID);
iotClient.setAWSSecretKey(awsSecKey);
iotClient.setHttpClient(&httpClient);
iotClient.setDateTimeProvider(&dateTimeProvider);
delay(50);
Serial.println("Updating thing shadow...");
MinimalString shadow = ("{\"state\":{\"reported\":{\"text\":" + data + "}}}").c_str();
char* result = iotClient.update_shadow(shadow, actionError);
Serial.print("result: ");
Serial.println(result);
}
void publishToAWS() {
Serial.println("Publishing to AWS IoT Broker");
publish("my-thing/text", "Hello World!");
}
keys.cpp 文件:
#include "keys.h"
// AWS User Credentials
const char* awsKeyID = "XXXXXXXXXXXXXXXXXXXX";
const char* awsSecKey = "X1xxx23xxxxXXXX34XXxxxxX56xXxxxxxxXx789x";
// AWS IoT
const char* awsIotRegion = "eu-central-1";
const char* awsIotEndpoint = "xxxxxxxxxxxxxx";
const char* awsIotDomain = "iot.eu-central-1.amazonaws.com";
// Init and connect WiFi to local WLAN
char* wifiSsid = "mySSID";
char* wifiPwd = "password";
答案 0 :(得分:3)
我终于可以做出贡献了:)
我在几天前就得到了同样的例子。但是我使用相同的库只是一个不同的分支iot-get-shadow-and-cleanup。我不记得要像你提到的那样做任何改变:
this->awsService = "iotdata";
至this->awsService = "execute-api";
以下是适用于keys.cpp的AWS端点的正确设置
awsIotRegion = "us-east-1";
awsIotEndpoint = "amazonaws.com";
awsIotDomain = "axxxxs2pxxxrlx.iot.us-east-1.amazonaws.com";`
同时将delete[] result;
添加到publish()
的末尾以节省一些宝贵的堆空间。
我建议使用iot-get-shadow-and-cleanup分支,因为它修复了内存泄漏。
我再做一次更改,以便在连续更新阴影时解决堆空间不足的所有问题。在AWSClient4.cpp中,我将// delete[] server;
更改为delete[] data;
- 我不是100%确定是否有必要但是加上delete[] result;
我能够连续每分钟更新一次shadown一个小时没有丢失任何堆。
希望这会有所帮助。