Error on my Processing GUI code for Arduino , I need some help

[glv]

@RichardDL

the 2nd shouldn’t be there.

It should not and will always be NULL.

@fdinumario Did you look at the example I provided?

Error on my Processing GUI code for Arduino , I need some help

Hello, Take a look at this example: Arduino code: sends comma delimited string of data with Serial.print(','); the end of the data string is terminated with a '\r' and a '\n' from Serial.println();

Arduino Code

void setup() { Serial.begin(9600); } void loop() { for(int x = 0; x < 15; x++) { Serial.print((float) x + random(0, 1000)/1000.0 , 3); Serial.print(','); } Serial.println(); delay(1000); }

Processing code: receives characters…

@fdinumario

winddir=315
windspeedmph=0.0
windgustmph=0.0
windgustmph=0.0

parseFloat() will not work on any of the above strings; you are converting a float in a String to a float as a float type… can’t do that with the extra text you have.

What do you think you need to do to correct this?

@fdinumario

winddir = parseFloat(q[0]);
windspeedmph = parseFloat(q[1]);
windgustmph = parseFloat(q[2]);
windgustdir = parseFloat(q[3]);

There may be other errors…
I did get this working but fixed everything that was not.

Keep working at it!

References:

Serial / Libraries

:)