reading sd file line by line, intersected with "code"

Projects Programming
3

Thanks for the reference to strtok.
I managed to get the following code, but with one last issue, in the void readSD, where i call the function readCode, i need to have to myFile.read converted to a char* i tried several options but couldn't get it to work right.
Also the myFile.read is seen as an int, which should be a string as it contains non-numbers.

I managed to convert it to char, but then ofcourse i get the error cannot convert char to char*

Code:

#include <string.h>
#include <SPI.h>
#include <SD.h>

File myFile;

int SSPIN = 4;
int joints = 4;
char delimiters[] = " xH yH zH J ";
int frametime = 0;

void setup()
{
  Serial.begin(9600);
  while (!Serial) {
    ;
  }
  
  Serial.print("Initializing SD card...");

  if (!SD.begin(SSPIN)) {
    Serial.println("initialization failed!");
    return;
  }
  Serial.println("initialization done.");
  
  
  //char instring[] = "xH 16.3 yH 5.5 zH 40.5 J 30.3";
}
  


void loop()
{
  
}
void readSD ()
{
  myFile = SD.open("test.txt");
  if (myFile) {
    Serial.println("test.txt:");

    // read from the file until there's nothing else in it:
    while (myFile.available()) {
      readCode(myFile.read());
    }
    // close the file:
    myFile.close();
  } else {
    // if the file didn't open, print an error:
    Serial.println("error opening test.txt");
  }
}
void readCode (char instring[])
{
    
  char* valPosition;
  
  //This initializes strtok with our string to tokenize
  valPosition = strtok(instring, delimiters);
  
 
  
  if(valPosition != NULL){
    for(int i=0; i < joints; i++)
    {
      if(i == 0)
        {
            Serial.println("Move Servo xH to:");
        }
      if(i == 1)
        {
            Serial.println("Move Servo yH to:");
        }
      if(i == 2)
        {
            Serial.println("Move Servo zH to:");
        }
      if(i == 3)
        {
            Serial.println("Frame Delay:");
        }
      Serial.println(valPosition);
    
      frametime = atof(valPosition);
      //Here we pass in a NULL value, which tells strtok to continue working with the previous string
      valPosition = strtok(NULL, delimiters);     
      }
    }
    Serial.println("Delay:");
    Serial.println(frametime);
    delay(frametime);
}