Using two different readStringUntil "characters"

[glv]

@GoToLoop ,

Your Arduino code from previous post above has errors.

Working (simplified) version:

//unsigned char xy[2];  //ok
//byte xy[2];  //ok
uint8_t xy[2]; //ok

//signed char xy[2];  // Error!

void setup() 
  {
  Serial.begin(9600);
  }

void loop() 
  {
  xy[0] = 255;
  xy[1] = 128;

  Serial.write(xy, 2);
  delay(1000);
  }

Reference:

• Serial.write() - Arduino Reference
• Arduino: Difference in "Byte" VS "uint8_t" VS "unsigned char" - Oscar Liang

:)