[英]Arduino: AT Commands - Read the last line of the serial output using Serial.read()
我不断传递AT命令以获取GSM信号强度我的代码复制了整个串行输出,请告知如何读取最新的串行输出(最后一行)
在下面找到输出,在其中我需要将最后一行(21,0)的输出分配给变量“ signal”
我的输出:
AT
OK
AT+CREG?
+CREG: 0,1
ok
AT+CSQ
+CSQ: 21,0
我的代码:
byte gsmDriverPin[3] = {
3,4,5};
char signal[10];
char inChar;
int index;
char inData[200];
void setup()
{
//Init the driver pins for GSM function
for(int i = 0 ; i < 3; i++){
pinMode(gsmDriverPin[i],OUTPUT);
}
digitalWrite(5,HIGH);//Output GSM Timing
delay(1500);
digitalWrite(5,LOW);
digitalWrite(3,LOW);//Enable the GSM mode
digitalWrite(4,HIGH);//Disable the GPS mode
delay(2000);
Serial.begin(9600); //set the baud rate
delay(5000);//call ready
delay(5000);
delay(5000);
start_GSM();
}
void loop()
{
Signal_Strength();
Serial.println("AT+CMGF=1");
delay(1000);
Serial.println("AT+CMGS=\"1234567890\"");//Change the receiver phone number
delay(1000);
Serial.println(signal);
delay(1000);
Serial.write(26);
}
void Signal_Strength(){
Serial.println("AT+CSQ");
delay(2000);
read_String();
strtok(inData, ",");
strcpy(signal,strtok(NULL, ","));
}
void read_String() {
index=0;
while(Serial.available() > 0) // Don't read unless
// there you know there is data
{
if(index < 199) // One less than the size of the array
{
inChar = Serial.read(); // Read a character
inData[index] = inChar; // Store it
index++; // Increment where to write next
inData[index] = '\0'; // Null terminate the string
}
}
}
void start_GSM(){
//Configuracion GPRS Claro Argentina
Serial.println("AT");
delay(2000);
Serial.println("AT+CREG?");
delay(2000);
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.