在我的代码中，编译到NodeMCU板上时收到“未在此范围内声明Wifi”错误。该代码具有一些自定义功能，但是对于WiFi和其调用Wifi功能的线路，其结构与源代码相同。
源代码可以完美编译，这让我认为库或任何类型的更新都没有问题。我已经检查了我的代码很多次了，没有得到错误。
以下是完整的编译错误：
C：\ Users \ Administrator \ Documents \ Arduino \ teste_watsoniot \ teste_watsoniot.ino： 在函数“ void setup（）”中：
teste_watsoniot：65：14：错误：未在此范围内声明“ Wifi”
if（strcmp（Wifi.SSID（）。c_str（），ssid）！= 0）{
^teste_watsoniot：73：59：错误：未在此范围内声明“ Wifi”
Serial.print（“已连接，IP地址：”）; Serial.println（Wifi.localIP（））; ^
退出状态1“ Wifi”未在此范围内声明
代码如下：
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <SimpleTimer.h>
#include "DHT.h"
/* Wi-Fi Information */
const char* ssid = "xxx";
const char* password = "xxx";
/* Watson Configurations */
#define DEVICE_TYPE "xxx"
#define DEVICE_ID "xxx"
#define ORG "xxx"
#define TOKEN "xxx" // this authentication token given with API key
char server[] = ORG ".messaging.internetofthings.ibmcloud.com";
char topic[] = "iot-2/evt/status/fmt/json"; //"iot-2/type/xxx/id/xxx/evt/1-anl/fmt/json"; // customize type and ID
char authMethod[] = "use-token-auth";
//char authMeth[] = "xxx"; // here a API key
char token[] = TOKEN;
char clientID[] = "d:" ORG ":" DEVICE_TYPE ":" DEVICE_ID;
/* String to send data */
String Str1 = "hum";
String Str2 = "temp";
String Str3 = "ldrValue1";
String Str4 = "soilValue2";
/* Start Wi-Fi */
WiFiClientSecure wifiClient;
PubSubClient client(server, 1833, wifiClient);
/* TIMER */
SimpleTimer timer;
/* DHT22*/
#define DHTPIN D3
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
float hum = 0;
float temp = 0;
/* Soil Moister and LDR */
int sensorPin = A0; // analog input for both sensors
int enable1 = D1; // enable reading Sensor 1
int enable2 = D2; // enable reading Sensor 2
int ldrValue1 = 0;
int soilValue2 = 0;
void setup()
{
Serial.begin(115200); Serial.println();
Serial.print("Conectando na rede "); Serial.print(ssid);
if (strcmp(Wifi.SSID().c_str(), ssid) != 0) {
WiFi.begin(ssid, password);
}
while (WiFi.status() != WL_CONNECTED) {
delay (500);
Serial.print (".");
}
Serial.println("");
Serial.print("Connected, IP address: "); Serial.println(Wifi.localIP());
timer.setInterval(1000L, getDhtData);
pinMode(enable1, OUTPUT);
pinMode(enable2, OUTPUT);
dht.begin();
}
/* Send to cloud */
void enviaDado(float dado1,float dado2, float dado3, float dado4){
String payload = "{\"d\":{\"" + Str1 + "\":";
payload += dado1;
payload += ", \"" + Str2 + "\":";
payload += dado2;
payload += ", \"" + Str3 + "\":";
payload += dado3;
payload += ", \"" + Str4 + "\":";
payload += dado4;
payload += "}}";
Serial.print("Sending payload: ");
Serial.println(payload);
//__ Envia o dado
if (client.publish(topic, (char*) payload.c_str())) {
Serial.println("Publish ok");
} else {
Serial.println("Publish failed");
}
}
void loop()
{
// Sensor DHT22
getDhtData();
// Sensor 1 LDR
digitalWrite(enable1, HIGH);
ldrValue1 = analogRead(sensorPin);
ldrValue1 = constrain(ldrValue1, 300, 850);
ldrValue1 = map(ldrValue1, 300, 850, 0, 1023);
Serial.print("Light intensity: ");
Serial.println(ldrValue1);
digitalWrite(enable1, LOW);
delay(500);
// Sensor 2 SOIL MOISTURE
digitalWrite(enable2, HIGH);
delay(500);
soilValue2 = analogRead(sensorPin);
soilValue2 = constrain(soilValue2, 300, 0);
soilValue2 = map(soilValue2, 300, 0, 0, 100);
Serial.print("Soil moisture: ");
Serial.println(soilValue2);
Serial.println();
delay(500);
digitalWrite(enable2, LOW);
displayData();
delay(2000); // delay for getting DHT22 data
timer.run(); // Initiates SimpleTimer
}
/* Get DHT data */
void getDhtData(void)
{
float tempIni = temp;
float humIni = hum;
temp = dht.readTemperature();
hum = dht.readHumidity();
if (isnan(hum) || isnan(temp)) // Check if any reads failed and exit early (to try again).
{
Serial.println("Failed to read from DHT sensor!");
temp = tempIni;
hum = humIni;
return;
}
}
/* display DHT data */
void displayData(void)
{
Serial.print(" Temperature: ");
Serial.print(temp);
Serial.print("oC Humidity: ");
Serial.print(hum);
Serial.println("%");
}