[英]Type conversion in Sending and Receiving a string to Arduino in C#
我正在嘗試從C#應用程序中的Arduino和GSM模塊發送短信。 我已經成功發送和接收了數據,但是問題出在我接收的字符串中,該字符串不是我發送的格式。 我的C#代碼是:
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代碼是:
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);
}
現在我收到的字符串是
AT AT+CMGF=1 AT+CMGS="0000000000000"
但我想要
AT AT+CMGF=1 AT+CMGS="012345678900"
如何獲取正確的字符串而不是“ 0000000000000”?
在您的C#代碼中,您僅向串行端口寫入5個字符:
currentPort.Write(buf, 0, 5);
但是在arduino中,您希望有13個字節:
if (Serial.available() == 13)
此條件永遠不會滿足,因此將跳過“ if-then”語句,並且不會初始化變量inputByte_0-inputByte_12。
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