SMS DECODER GUIDANCE NEEDED

camolas · July 30, 2012, 7:04pm

if i reset de arduino i get difereng data ex:

Read: 41
Read: 54
Read: D
Read: D
Read: A
inData: [AT]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: D
Read: D
Read: A
inData: [AT]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: 2B
Read: 43
Read: 41
Read: 54
Read: D
Read: D
Read: A
inData: [AT]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: D
Read: D
Read: A
inData: [AT]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: 2B
Read: 43
Read: 4D
Read: 47
Read: 46
Read: 3D
Read: 31
Read: D
Read: D
Read: A
inData: [AT+CMGF=1]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: 2B
Read: 43
Read: 50
Read: 4D
Read: 53
Read: 3D
Read: 22
Read: 53
Read: 4D
Read: 22
Read: 2C
Read: 22
Read: 53
Read: 4D
Read: 22
Read: 2C
Read: 22
Read: 53
Read: 4D
Read: 22
Read: D
Read: D
Read: A
inData: [AT+CPMS="SM","SM","SM]
Read: 2B
Read: 43
Read: 50
Read: 4D
Read: 2B
Read: 43
Read: 4D
Read: 47
Read: 4C
Read: 3A
Read: 20
Read: 32
Read: 2C
Read: 22
Read: 52
Read: 45
Read: 43
Read: 20
Read: 52
Read: 45
Read: 41
Read: 44
Read: 22
Read: 2C
Read: 22
Read: 37
Read: 22
Read: 32
Read: 22
Read: A
inData: [+CPM+CMGL: 2,"REC READ","7"2"]
Read: A
inData: []

any problem?

system · July 30, 2012, 7:08pm

any problem?

Not for me.

camolas · July 30, 2012, 7:12pm

PaulS:
OK. So, you are seeing an end of packet marker, as evidenced by the inData stuff being printed after the if(ended) statement.

Comment out the first set of Serial.print() statements.

After the if(ended) statement, you now need to parse the replies from the device. Since the reply is a string (a NULL terminated array of chars), all the normal string functions (strstr(), for instance) can be used.

Can you please Dear Sr. explain me beter what i have to put in the function (strstr(), for instance) ?

Thanks

system · July 30, 2012, 7:19pm

explain me beter what i have to put in the function (strstr(), for instance) ?

strstr() takes two arguments - the string to search and the string to search for. So:

if(strstr(inData, "REC READ"))
{
   // Hey, this is the REC READ response...
}

I don't know what else you want from that record, so you'll have to do the rest.

camolas · July 30, 2012, 7:24pm

Read: 41 in decimal  is 65 and Leter A
Read: 54                    84       Leter T
Read: D                     13        Carriage Return
Read: D                     13        Carriage Return
Read: A                     10         Line Feed

camolas · July 30, 2012, 8:05pm

#include <SoftwareSerial.h>
SoftwareSerial phone(2, 3); 

#define EOP '\n'

bool started = false;
bool ended = false;

char inData[280];
byte index;

void setup()
{
  phone.begin(9600);
  delay(500);
  Serial.begin(9600);
  phone.println("AT");//text mode
  delay(500);
  phone.println("AT");//text mode
  delay(500);
  phone.println("AT+CMGF=1");//text mode
  delay(500);
  phone.println("AT+CPMS=\"SM\",\"SM\",\"SM\"\r\n");
  delay(500);
  phone.println("AT+CMGL=\"ALL\"\r");
  //Serial.println("AT+CMGD=1");//delete sms
  delay(500);
}

void loop()
{ 
  while(phone.available() > 0)
  {

    char inChar = phone.read();
    Serial.print("Read: ");
    Serial.println(inChar, HEX);

    if(inChar == EOP)
    {
      ended = true;
      break;
    }
    else
    {
      if(index < 279)
      {
        inData[index] = inChar;
        index++;
        inData[index] = '\0';
      }
    }
  }

  if(ended)
  {
    Serial.print("inData: [");
    Serial.print(inData);
    Serial.println("]"); 

    ended = false;
    index = 0;
    inData[index] = '\0';
  }
  if(strstr(inData, "REC READ"))
  {
    Serial.println("REC READ FOUND");
  } 
}

I get "REC READ FOUND" afther severel loops now i want to read the sms "body" that is in this case "Stop" but the string dont get there ( dont stor, i try to chang the if(strstr(inData, "REC READ")) to if(strstr(inData, "Stop") but no sucess) any ideas? Thanks

+CPM+CMGL: 2,"REC READ","351910172170","Meu91","12/07/24,22:38:14+04",145,4
Stop

system · July 31, 2012, 10:08am

now i want to read the sms "body" that is in this case "Stop" but the string dont get there

OK.

Where did this:

+CPM+CMGL: 2,"REC READ","351910172170","Meu91","12/07/24,22:38:14+04",145,4
Stop

come from?

What does ALL of your serial output look like? At least the part after "REC READ FOUND" is printed?

camolas · July 31, 2012, 12:21pm

Hi,

Terminal

...................
...................
...................
Read: 45
Read: 41
Read: 44
Read: 22
Read: 2C
Read: 22
Read: 33
Read: 37
Read: 22
Read: 32
Read: 22
Read: 2C
Read: 6F
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
REC READ FOUND
...................
...................
...................

"REC READ FOUND" is printed.

+CPM+CMGL: 2,"REC READ","351910172170","Meu91","12/07/24,22:38:14+04",145,4
Stop

This dont print by your code only with the

#include <SoftwareSerial.h>
SoftwareSerial phone(2, 3); 

char incomingByte = 0;

void setup(){
  phone.begin(9600);
  delay(500);
  Serial.begin(9600);
   phone.println("AT");//text mode
  delay(500);
   phone.println("AT");//text mode
  delay(500);
   phone.println("AT+CMGF=1");//text mode
  delay(500);
  phone.println("AT+CPMS=\"SM\",\"SM\",\"SM\"\r\n");
  delay(500);
  phone.println("AT+CMGL=\"ALL\"\r");
  //Serial.println("AT+CMGD=1");//delete sms
  delay(500);
}
void loop() {
    while(1){ 
   if (phone.available() > 0) {
      incomingByte = phone.read();
               Serial.print(incomingByte);
   }
    }
}

system · July 31, 2012, 1:00pm

This:

  if(strstr(inData, "REC READ"))
  {
    Serial.println("REC READ FOUND");
  }

belongs INSIDE this block,

  if(ended)
  {
    Serial.print("inData: [");
    Serial.print(inData);
    Serial.println("]"); 

    ended = false;
    index = 0;
    inData[index] = '\0';
  }

as I've told you before.

If your message (Stop) doesn't end with a CR/LF, the Arduino will keep reading, and tacking data onto the array, until the CR/LF does arrive.

camolas · July 31, 2012, 1:26pm

if i use:

void loop()
{ 
  while(phone.available() > 0)
  {

    char inChar = phone.read();
    Serial.print("Read: ");
    Serial.println(inChar, HEX);

    if(inChar == EOP)
    {
      ended = true;
      break;
    }
    else
    {
      if(index < 279)
      {
        inData[index] = inChar;
        index++;
        inData[index] = '\0';
      }
    }
  }

  if(ended)
  {
    Serial.print("inData: [");
    Serial.print(inData);
    Serial.println("]"); 

    ended = false;
    index = 0;
    inData[index] = '\0';
    
    if(strstr(inData, "REC READ"))
  {
    Serial.println("REC READ FOUND");
  } 
  }
  }

i dont get "REC READ FOUND"

system · July 31, 2012, 1:35pm

if i use:...i dont get "REC READ FOUND"

Of course you don't.

Add some comments to the code, to explain what you think each line is doing. I'll correct any misconceptions.

camolas · July 31, 2012, 1:43pm

With this :

#include <SoftwareSerial.h>
SoftwareSerial phone(2, 3); 

#define EOP '\n'

bool started = false;
bool ended = false;

char inData[280];
byte index;

void setup()
{
  phone.begin(9600);
  delay(500);
  Serial.begin(9600);
  phone.println("AT");//text mode
  delay(500);
  phone.println("AT");//text mode
  delay(500);
  phone.println("AT+CMGF=1");//text mode
  delay(500);
  phone.println("AT+CPMS=\"SM\",\"SM\",\"SM\"\r\n");
  delay(500);
  phone.println("AT+CMGL=\"ALL\"\r");
  //Serial.println("AT+CMGD=1");//delete sms
  delay(500);
}

void loop()
{ 
  while(phone.available() > 0)
  {

    char inChar = phone.read();
    Serial.print("Read: ");
    Serial.println(inChar, HEX);

    if(inChar == EOP)
    {
      ended = true;
      break;
    }
    else
    {
      if(index < 279)
      {
        inData[index] = inChar;
        index++;
        inData[index] = '\0';
      }
    }
  }

  if(ended)
  {
    Serial.print("inData: [");
    Serial.print(inData);
    Serial.println("]"); 

    ended = false;
    index = 0;
    inData[index] = '\0';
  }
  if(strstr(inData, "REC READ"))
  {
    Serial.println("REC READ FOUND");
  } 
}

i get REC READ FOUND
but if i use if(strstr(inData, "Stop")) dont, the storing stops before all data came in

system · July 31, 2012, 1:46pm

but if i use if(strstr(inData, "Stop"))

If you use it where?

camolas · July 31, 2012, 1:48pm

if(ended)
{
Serial.print("inData: [");
Serial.print(inData);
Serial.println("]");

ended = false;
index = 0;
inData[index] = '\0';
}
if(strstr(inData, "Stop"))
{
Serial.println("Stop FOUND");
}
}

system · July 31, 2012, 1:55pm

So, when the carriage return arrives, you set the index position back to 0, and stuff a NULL in the first element of the array. The strstr() function then starts at the first element of the array, matching characters in the 2nd array, until it encounters a NULL in the first array (or the second one).

Since it hits the NULL right off the bat, inData will never match "Stop", after the carriage return arrives.

But, I can't see your serial output, so I can't see what is really happening for you.

camolas · July 31, 2012, 2:05pm

this is what a get

Terminal:

Read: 41
Read: 54
Read: D
Read: D
Read: A
inData: [AT]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: D
Read: D
Read: A
inData: [AT]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: 2B
Read: 43
Read: 4D
Read: 47
Read: 46
Read: 3D
Read: 31
Read: D
Read: D
Read: A
inData: [AT+CMGF=1]
Read: 4F
Read: 4B
Read: D
Read: A
inData: [OK]
Read: 41
Read: 54
Read: 2B
Read: 43
Read: 50
Read: 4D
Read: 53
Read: 3D
Read: 22
Read: 53
Read: 4D
Read: 22
Read: 2C
Read: 22
Read: 53
Read: 4D
Read: 22
Read: 2C
Read: 22
Read: 53
Read: 4D
Read: 22
Read: D
Read: D
Read: A
inData: [AT+CPMS="SM","SM","SM"]
Read: 2B
Read: 43
Read: 50
Read: 4D
Read: 2B
Read: 43
Read: 4D
Read: 47
Read: 4C
Read: 3A
Read: 20
Read: 32
Read: 2C
Read: 22
Read: 52
Read: 45
Read: 43
Read: 20
Read: 52
Read: 45
Read: 41
Read: 44
Read: 22
Read: 2C
Read: 22
Read: 31
Read: 4D
Read: 37
Read: 2B
Read: 22
Read: 2C
Read: D

system · July 31, 2012, 2:22pm

this is what a get

Which is not as much as you were getting. Why? What are you doing different?

camolas · July 31, 2012, 2:33pm

Im lost... i need to:
1 st if is present get "REC READ"
2 read sms body
3 dependig in what is on it (sms body) do stuff

i cant tell, sory

Which is not as much as you were getting. Why? What are you doing different?

system · July 31, 2012, 2:40pm

Every time you run the code, you seem to get different output. I think you need to work first on getting consistent output. Then, you can figure out how to parse the data.

Modify the code that seems to print all the data, to print it one character at a time, printing that character as a character and in HEX format, so we can see what the whole message looks like.

camolas · July 31, 2012, 2:49pm

Can you please explain how can i get "consistent output"?

Thanks

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