File Read from SD Card

Projects Programming
1

Sorry if this is in the wrong location (having trouble searching for the right place).

I have my code reading and dividing it up with out a problem, with the exception that I would like to read (for lack of better terms) the info and skip the comments.

Is there a way to cause the StreamReader to go to the next line, regardless of whether or not there is anything remaining on the current line.

Here is sample of my file:

TRUE;					//Enable AC Power Supply #1 Monitoring
FALSE;					//Enable AC Power Supply #2 Monitoring
TRUE;					//Enable Forward Combustible Fume Detection

I want the true and ignore the semi-colon and comments. Here is what I have reads it all:

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

String val;

void setup() {
  Serial.begin(9600);           // Start Serial for Debugging

  pinMode(10, OUTPUT);
  digitalWrite(10, HIGH);

  if(!SD.begin(4)) Serial.println("SD fail");
  else Serial.println("SD ok");

  File cfg = SD.open("cfg.ini", FILE_READ);
  int i = 0;
  while (cfg.available()) {
    
    val = cfg.readStringUntil(';');
    Serial.println(i);
    Serial.println(val); //Printing for debugging purpose 
    i++;        
    //move val to my parameters
  }

  cfg.close();
  
}

void loop() {
  // put your main code here, to run repeatedly:

}

Here is the current output, obviously the first one is perfect but the balance is off.

SD ok
0
TRUE
1
					//Enable AC Power Supply #1 Monitoring
FALSE
2
	//Enable AC Power Supply #2 Monitoring
TRUE

Any assistance is much appreciated!!

2

You need to write code for that... basically it seems that you need to read one word and then ignore till the end of line

3

I was hoping that there was an easier way, but I guess that this method of what you are saying is simple enough after 2 more drinks and some thought.

Here is what works unless there is a simpler way that some one knows about.

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

String val;
String trash;

void setup() {
  Serial.begin(9600);           // Start Serial for Debugging

  pinMode(10, OUTPUT);
  digitalWrite(10, HIGH);

  if(!SD.begin(4)) Serial.println("SD fail");
  else Serial.println("SD ok");

  File cfg = SD.open("cfg.ini", FILE_READ);
  int i = 0;
  while (cfg.available()) {
    
    val = cfg.readStringUntil(';');
    Serial.println(i);
    Serial.println(val); //Printing for debugging purpose 
    trash = cfg.readStringUntil('\n');
    i++;        
    //move val to my parameters
  }

  cfg.close();
  
}

void loop() {
  // put your main code here, to run repeatedly:

}
4

exactly. Now if you do that without the String class, it's even better :slight_smile: