Use data on SD card for controlling a servomotor

Other Hardware Storage
11

TY for your help, but I've still problems of conversion.. :frowning:
In fact my file "Test.txt" contains 3digit-numbers from 0 to 255, like this :
"076;234;145;024;245;ect..."

Here is your code that I adapted.

#define SOP '<'
#define EOP '>'

bool started = false;
bool ended = false;

char name[] = "Test.txt";    // name of the file n my SD card
char inData[1000];
byte index;

void setup()
{
   Serial.begin(9600);
   // Etc...
}

void loop()
{
  file.open(root, name, O_READ);    //Open the file in read mode.
   char inChar=file.read();              //Get the first byte in the file.
    while(inChar >0){           
    char inChar = file.read();

    if(inChar == SOP)
    {
       index = 0;
       inData[index] = '\0';
       started = true;
       ended = false;
    }
    else if(inChar == EOP)
    {
       ended = true;
       break;
    }
    else
    {
      if(index < 999)
      {
        inData[index] = inChar;
        index++;
        inData[index] = '\0';
      }
    }
  }
    }

We are here because all pending serial data has been read , does it change something in the code ?

  if(started && ended)
  {
 
   // Process the packet = Segment + store in an array + convert to int ?

// segmentation
    char *token;
    token = strtok (inChar, ";");  

// creation of an array (3 digit-numbers)
int a;
char array[3]= {0};

how to store "token" in this array ? does "a=sprintf(array,token)" is correct ?

    int a = atoi (array);

and how to convert them one by one ?

    // Reset for the next packet
    started = false;
    ended = false;
    index = 0;
    inData[index] = '\0';
  }

}