无法发送短信 Arduino GSM Shield 2答案

【问题标题】：Unable to send sms Arduino GSM Shield 2无法发送短信 Arduino GSM Shield 2
【发布时间】：2016-10-09 04:29:04
【问题描述】：

我无法连接，我不知道为什么，有人可以帮助我吗？

控制台返回：

"/tmp/arduino_ca13faa5535f759e3ad5c18bb4094ecd/SendSMS.ino：在函数'void setup()'中： /tmp/arduino_ca13faa5535f759e3ad5c18bb4094ecd/SendSMS.ino:48:34：警告：不推荐将字符串常量转换为 'char*' [-Wwrite-strings] if (gsmAccess.begin(PINNUMBER) == GSM_READY) { "

#include <GSM.h>

#define PINNUMBER ""

// initialize the library instance
GSM gsmAccess;
GSM_SMS sms;

void setup() {
  // initialize serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ;// wait for serial port to connect. Needed for native USB port only
  }

  Serial.println("SMS Messages Sender");

  // connection state
  boolean notConnected = true;

  // Start GSM shield
  // If your SIM has PIN, pass it as a parameter of begin() in quotes
  while (notConnected) {
    if (gsmAccess.begin(PINNUMBER) == GSM_READY) {
      notConnected = false;
    } else {
      Serial.println("Not connected");
      delay(1000);
    }
  }

  Serial.println("GSM initialized");
}

void loop() {

  Serial.print("Enter a mobile number: ");
  char remoteNum[20];  // telephone number to send sms
  readSerial(remoteNum);
  Serial.println(remoteNum);

  // sms text
  Serial.print("Now, enter SMS content: ");
  char txtMsg[200];
  readSerial(txtMsg);
  Serial.println("SENDING");
  Serial.println();
  Serial.println("Message:");
  Serial.println(txtMsg);

  // send the message
  sms.beginSMS(remoteNum);
  sms.print(txtMsg);
  sms.endSMS();
  Serial.println("\nCOMPLETE!\n");
}

/*
  Read input serial
 */
int readSerial(char result[]) {
  int i = 0;
  while (1) {
    while (Serial.available() > 0) {
      char inChar = Serial.read();
      if (inChar == '\n') {
        result[i] = '\0';
        Serial.flush();
        return 0;
      }
      if (inChar != '\r') {
        result[i] = inChar;
        i++;
      }
    }
  }
}

【问题讨论】：

标签： arduino sms gsm

【解决方案1】：

这只是一个警告。草图构建良好。您在“串行监视器”窗口中看到了什么？（拖动选择、复制并粘贴到下面的评论中。）

您尚未将 PIN 设置为任何内容，例如“1234”。你有 PIN 码吗？

【讨论】：