Serial.Read in the setup of an Arduino code?

Question

Is it possible to perform a Serial.Read in the Setup area of an Arduino code? I need my main loop to be fast and don't want it to be slowed down by a piece of code that only has to run once.

score 1 · Answer 1 · answered Aug 06 '16 at 03:27

1

Here is Serial.Read() function example:- Click

And this one is Serial Event example:- Click

answered Aug 06 '16 at 03:27

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I cannot see the answer to Lego man's question in that link. BTW, the answer is 'possible, but not useful'. You need a loop anyway to wait for any incoming text after Serial.begin() ( and eventually another loop ** while (!Serial() ) {} ** ) For loops, you best use the predeclared loop() function. – datafiddler Aug 06 '16 at 12:43

score 1 · Accepted Answer · answered Nov 07 '16 at 14:55

You can put Serial.read() in the setup() function. Be sure that you put it after Serial.begin(). Since Serial.read() is "non-blocking" you will need to put some additional code to loop and wait for something to read. Serial.read() returns -1 if there is no data waiting in the serial input buffer.

Serial.Read in the setup of an Arduino code?

2 Answers2