我正在尝试从C#应用程序中的Arduino和GSM模块发送短信。我已成功发送和接收数据,但问题在于我收到的字符串不符合我发送的格式。我的C#代码是:
string mystr = "012345678900"
char [] buf = new char[13];
buf = mystr.ToCharArray();
int intReturnASCII = 0;
char charReturnValue = (Char)intReturnASCII;
currentPort.Open();
currentPort.Write(buf, 0, 5);
Thread.Sleep(7500);
int count = currentPort.BytesToRead;
string returnMessage = "";
while (count > 0)
{
intReturnASCII = currentPort.ReadByte();
returnMessage = returnMessage + Convert.ToChar(intReturnASCII);
count--;
}
currentPort.Close();
str = returnMessage;
我的Arduino代码是:
int ledPin_3 = 13;
byte inputByte_0;
byte inputByte_1;
byte inputByte_2;
byte inputByte_3;
byte inputByte_4;
byte inputByte_5;
byte inputByte_6;
byte inputByte_7;
byte inputByte_8;
byte inputByte_9;
byte inputByte_10;
byte inputByte_11;
byte inputByte_12;
void setup() {
pinMode(ledPin_3, OUTPUT);
Serial.begin(9600);
digitalWrite(ledPin_3, HIGH);
delay(250);
digitalWrite(ledPin_3, LOW);
delay(250);
}
void loop() {
if (Serial.available() == 13)
{
inputByte_0 = Serial.read();
delay(100);
inputByte_1 = Serial.read();
delay(100);
inputByte_2 = Serial.read();
delay(100);
inputByte_3 = Serial.read();
delay(100);
inputByte_4 = Serial.read();
delay(100);
inputByte_5 = Serial.read();
delay(100);
inputByte_6 = Serial.read();
delay(100);
inputByte_7 = Serial.read();
delay(100);
inputByte_8 = Serial.read();
delay(100);
inputByte_9 = Serial.read();
delay(100);
inputByte_10 = Serial.read();
delay(100);
inputByte_11 = Serial.read();
delay(100);
inputByte_12 = Serial.read();
delay(100);
}
delay(1200);
Serial.print("AT");
delay(1200);
int index = 0;
Serial.println();
Serial.println("AT+CMGF=1");
delay(100);
delay(1200);
Serial.println();
Serial.print("AT+CMGS=\"");
Serial.print(inputByte_0);
Serial.print(inputByte_1);
Serial.print(inputByte_2);
Serial.print(inputByte_3);
Serial.print(inputByte_4);
Serial.print(inputByte_5);
Serial.print(inputByte_6);
Serial.print(inputByte_7);
Serial.print(inputByte_8);
Serial.print(inputByte_9);
Serial.print(inputByte_10);
Serial.print(inputByte_11);
Serial.print(inputByte_12);
Serial.println("\"");
delay(1000);
Serial.print("message from GSM");
delay(500);
Serial.write(0x1A);
Serial.write(0x0D);
Serial.write(0x0A);
}
现在收到的字符串是
AT AT+CMGF=1 AT+CMGS="0000000000000"
但我想要
AT AT+CMGF=1 AT+CMGS="012345678900"
如何获得正确的字符串而不是" 0000000000000" ??
答案 0 :(得分:1)
在c#代码中,您只能在串口上写入5个字符:
currentPort.Write(buf, 0, 5);
但是在arduino中你需要13个字节:
if (Serial.available() == 13)
这种情况永远不会满足,因此" if-then"语句被跳过,变量inputByte_0 - inputByte_12未初始化。