Simple for you guys I´m sure

Projects Programming
4

I like to use strtoul for unsigned integer scanning.

char data[] =  "200,201,202";

uint8_t rValue, gValue, bValue;

void setup() {
  char* behind;
  Serial.begin(115200);
  Serial.print(F("data to scan \""));
  Serial.print(data);
  Serial.println(F("\""));

  rValue = strtoul(data, &behind, 0); // allows for hex in 0x.. notation
  if (behind != nullptr && *behind == ',') {
    behind++;
  }
  gValue = strtoul(behind, &behind, 0);
  if (behind != nullptr && *behind == ',') {
    behind++;
  }
  bValue = strtoul(behind, &behind, 0);
  Serial.print(F("parsed values are "));
  Serial.print(rValue);
  Serial.write(',');
  Serial.print(gValue);
  Serial.write(',');
  Serial.println(bValue);
}

void loop() {}

Output:

data to scan "200,201,202"
parsed values are 200,201,202

You could drop the checks

if (behind != nullptr && *behind == ',') {

if you are absolutely sure about the input format.