Hello. This is my first post on discourse. Please redirect me to the proper forum if this is not the one. Thanks.
My latest little experiment is receiving strings (over a serial line). The string consists of a qualifier (one character) a colon and then a value (one or more characters [0-9]). eg: "r:279".
My code splits the string into two, using the colon as a delimiter. The first substring is a single character string. The second is a cause for headaches.
When I try to convert the string into a number, my instinct tells me to use integers, because that's what they are (to me). but this:
int value =
int(telemetry[1]);
gives me zeroes every time, while this:
float value =
float(telemetry[1]);
works just fine.
Please, can someone explain the difference that is obviously there, but not so to me.
Rik
Quote:import processing.serial.*;
Serial PicPort;
String myString = null;
int cr = 13; // strings are terminated by ascii 13: carriage return aka newline
void setup() {
// parent comport baud parity databits stopbit
PicPort = new Serial(this, Serial.list()[0], 4800, 'N', 8, 1.0);
myString = PicPort.readStringUntil(cr);
}
void draw() {
while (PicPort.available() > 0) {
myString = PicPort.readStringUntil(cr);
if (myString != null) {
// println(myString);
// examples of myString: "r:259", "t:18", "t:0"
String telemetry [] = split(myString, ":");
String qualifier = telemetry[0];
float value = float(telemetry[1]); // WHY won't this convert to int ?!?!
//println (qualifier +"="+ value);
}
}
}
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float() but not int()? (Read 1022 times)