URL encode char*

Projects Programming
21

Glad you have a solution, and Thank You for posting the discovery - am sure it will help the next curious coder that finds this thread.

22

Copy & pasted the two functions h2int() and urldecode() into my sketch and they work! :slight_smile:

Did you consider a simple replace function like below for 0%2C255%2C128 to 0,255,128?

// zoomkat 7-30-11 serial I/O string test
// type a string in serial monitor. then send or enter
// for IDE 0019 and later

String readString;

void setup() {
  Serial.begin(9600);
  Serial.println("serial test 0021"); // so I can keep track of what is loaded
}

void loop() {

  while (Serial.available()) {
    delay(2);  //delay to allow byte to arrive in input buffer
    char c = Serial.read();
    readString += c;
  }

  if (readString.length() >0) {
    Serial.println(readString);
    readString.replace("%2C", ",");
    Serial.println(readString);
    Serial.println();

    readString="";
  } 
}
23

Hello.
I have a small correction for the hex_digit function bellow.
The '0' between '9' and 'A' should not be there.
return "01234567890ABCDEF"[c & 0x0F];
Old thread but I just found it today, used it and got a weird output.

Original:

static char hex_digit(c)
{  return "01234567890ABCDEF"[c & 0x0F];
}

Correct:

static char hex_digit(c)
{  return "0123456789ABCDEF"[c & 0x0F];
}
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