Arduino草图中从字符串常量到'char *'[-Wwrite-strings]错误的弃用转换 [英] Deprecated conversion from string constant to 'char*' [-Wwrite-strings] error in Arduino sketch

问题描述

我正在使用Arduino和ESP8266发送传感器数据.但是在Arduino中编译草图时，我收到一条错误消息-不建议从字符串常量转换为'char *'[-Wwrite-strings] .

I'm sending sensor data using Arduino and ESP8266. But while compiling the sketch in Arduino I'm getting an error saying - deprecated conversion from string constant to 'char*' [-Wwrite-strings].

#include "SoftwareSerial.h"
SoftwareSerial esp(10, 11);// RX, TX
void setup() {
  esp.begin(9600);
  Serial.begin(9600);
  delay(100);
  Serial.println("Started...");
  reset();
  connectWifi();
}

//reset the esp8266 module
void reset() {
  esp.println("AT+RST");
  delay(1000);
  if (esp.find("OK")) Serial.println("Module Reset"); //error
}

推荐答案

正如Aeldred所说，您只需要将String强制转换为 char * .

As Aeldred said you have just to cast you String to char*.

所以您的草图将如下所示:

so your sketch will looks like :

#include "SoftwareSerial.h"
SoftwareSerial esp(10, 11);// RX, TX
void setup() {
  esp.begin(9600);
  Serial.begin(9600);
  delay(100);
  Serial.println("Started...");
  reset();
  connectWifi();
}

//reset the esp8266 module
void reset() {
  esp.println("AT+RST");
  delay(1000);
  if (esp.find((char*)"OK")) Serial.println("Module Reset"); //error
}

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