strtok_r Problem

[StefanWxx 2]

Hi,

a simple program and also a simple problem, but I can not find a solution.

someone has a tip for me?

char text[] = "Value1, 1000, Value2,100,Value3,1.414,end";
void setup()
{
  
  Serial.begin(9600);
  
}

void loop(){
  
  char *p = text;
  char *str;
  
  
while ((str = strtok_r(p, ",", &p)) != NULL) // delimiter is comma
 {   Serial.println(str);
 delay(500);
 }


}

The output ist not as expected:

 

Value1

 1000

 Value2

100

Value3

1.414

end

Value1

Value1

Value1

Value1

Value1

Value1

Value1

.

.

.

.

.

 

 

I want this:

 

Value1

 1000

 Value2

100

Value3

1.414

end

Value1

 1000

 Value2

100

Value3

1.414

end

Value1

 1000

 Value2

100

Value3

1.414

end

.

.

.

 

 

[oPossum 1,083]

char *strtok_r(char *str, const char *delim, char **saveptr);

On the first call to strtok_r(), str should point to the string to be parsed, and the value of saveptr is ignored. In subsequent calls, str should be NULL, and saveptr should be unchanged since the previous call.

  char *p = text;
  char *q;
  char *str;

  while ((str = strtok_r(p, ",", &q)) != NULL) // delimiter is comma
  {
    p = NULL;
    Serial.println(str);
    delay(500);
  }