Serial2.println issue

General
5

@bko,
Thanks for the suggestions… edited to remove previous post.

I think there is still an issue. If I insert a delay after the first Serial
print on the photon, the photon appears to stream the output correctly. Else it fails…see output below

Here is the updated code:
T3:

#define POUART Serial2
unsigned long baud = 115200;
String inputString = ""; // a string to hold incoming data
boolean stringComplete = false; // whether the string is complete

void setup() {
  Serial.begin(baud);  // for T3 to PO connection
  POUART.begin(baud); // use this for T3 PO interaction
}

void POUART_read() { 
  while (POUART.available()) {
   // get the new byte:
   char inChar = (char)POUART.read(); 
   if (inChar == 13) {
     stringComplete = true;
   } else {
    inputString += inChar;
   }
  }
}

void loop()
{
  POUART_read();
  if(stringComplete) {
    Serial.print("Got input: ");
    Serial.println(inputString);
    if (inputString == "abc"){
      Serial.println("Got String: ABC");
    }
    stringComplete = false;
    inputString = "";
  }
  
}

Photon:

#define UART Serial2

void setup()
{
  UART.begin(115200);
  UART.println("With Delay inserted after first print");
}

void loop()
{
    UART.println("012345678");
    delay(10); // This delay after first print appears to help..
    UART.println("abc");
    delay(5000); // delay 5 secs
}

Output: (Note the first Odd char ÿ <— Unprintable Photon buffer data?)

ÿNo Delay inserted after first print
01
Got input: 2345678
Got input: 
abc

Got input: 012345678
a
Got input: bc

Got input: 012345678
a
Got input: bc

Got input: 012345678
a
Got input: bc

Got input: 012345678
a
Got input: bc

Got input: 

ÿWith Delay inserted after first print

Got input: 012345678

Got input: abc
Got String: ABC
Got input: 
012345678

Got input: abc
Got String: ABC
Got input: 
012345678

Got input: abc
Got String: ABC
Got input: 
012345678

Got input: abc
Got String: ABC
Got input: 
012345678