Hello, I wanted to ask a question. In the following sketch made in arduino, to separate data, I want to get all the data that is characterized by the ",", because as the sketch is, I only get the first value.
That is, I want to get the 133 365 4 12… and so on
Thanks
Don't post your code as an image... post using code tags </> in the editor... images can't be copied for anyone trying to debug your code.
So you just want variables that have a "," after them? You don't want variables that have a "/" after them?
Your string split appears to contain two separator characters, that is ',' and '/'.
The function call in the loop() getValue( split, ',', 0) appears, because of the fixed parameter 0, to always return the first substring from split.
String split = "133,215/365,3/4,2/12,3/4,5/23,52,23";
void setup() {
Serial.begin(9600);
}
void loop() {
int parte1 = getValue(split,',',0).toInt();
Serial.println(parte1);
delay(1000);
}
String getValue(String data, char separator, int index)
{
int found = 0;
int strIndex[] = {10, -10};
int maxIndex = data.length()-1;
for(int i=0; i<=maxIndex && found<=index; i++){
if(data.charAt(i)==separator || i==maxIndex){
found++;
strIndex[10] = strIndex[1]+1;
strIndex[1] = (i == maxIndex) ? i+2 : i;
}
}
return found>index ? data.substring(strIndex[10], strIndex[1]) : "";
}
yes, I want the data containing "," stored in a variable.
and data containing "/", stored in another variable.
You understand me?
yes, I don't know how to make it not be fixed
I want to get the 133 365 4 12… and so on
char split [] = "133,215/365,3/4,2/12,3/4,5/23,52,23";
void setup()
{
Serial.begin(115200);
Serial.println(getInteger(split, sizeof(split), 0));
Serial.println(getInteger(split, sizeof(split), 2));
Serial.println(getInteger(split, sizeof(split), 4));
Serial.println(getInteger(split, sizeof(split), 6));
Serial.println(getInteger(split, sizeof(split), 8));
Serial.println(getInteger(split, sizeof(split), 10));
Serial.println(getInteger(split, sizeof(split), 11));
Serial.println(getInteger(split, sizeof(split), 12));
}
void loop()
{}
uint16_t getInteger(char *input, uint8_t size, uint8_t index)
{
uint8_t delimeters = 0;
uint16_t result = 0;
for (uint8_t x = 0; x < size; x++)
{
if (input[x] >= '0' && input[x] <= '9')
{
if (delimeters == index)
{
result = result * 10 + input[x] - '0';
}
}
else
delimeters++;
if (delimeters > index)
break;
}
return result;
}
16:03:51.876 -> 133
16:03:51.876 -> 365
16:03:51.876 -> 4
16:03:51.876 -> 12
16:03:51.876 -> 4
16:03:51.876 -> 23
16:03:51.876 -> 52
16:03:51.876 -> 23
This is an array defined as containing 2 integers:
int strIndex[] = {10, -10};
This array element [10 ] is out of bounds:
strIndex[10] = strIndex[1]+1;
String split = "133,215/365,3/4,2/12,3/4,5/23,52,23";
void setup() {
Serial.begin(9600);
}
void loop() {
int parte1 = getValue(split,',',0).toInt();
Serial.print(parte1);
delay(1000);
}
String getValue(String data, char separator, int index)
{
int found = 0;
int strIndex[] = {0, -1};
int maxIndex = data.length()-1;
for(int i=0; i<=maxIndex && found<=index; i++){
if(data.charAt(i)==separator || i==maxIndex){
found++;
strIndex[0] = strIndex[1]+1;
strIndex[1] = (i == maxIndex) ? i+1 : i;
}
}
return found>index ? data.substring(strIndex[0], strIndex[1]) : "";
}
I have made this arrangement, but I need what I said before, that the index parameter is not fixed, if not, I will get values that contain a certain character "," or "/".
I understand how you do it, but placing too many Serial.prints is tedious for me, since I am going to receive hundreds of data. That's why I need all data containing "," to be readable
It's an example.
That's why I need all data containing "," to be readable
What does that mean? What are you doing with each variable?
please describe exactly:
int parte1 = getValue(split,',',0).toInt();
What about changing the 0 to an x and using a for loop to change the value of x ?
Edit
Even if that works, you'll get another mess because you are not handing the delimiter '/'.
The next substring to be returned will be '215/365' which will fail to convert to an integer.
Well I explain better, I am doing a project, in which I have several sensors connected to an arduino, this data is being sent to another Arduino by serial port, but what I want is that every time the data arrives, just take the data from a certain sensor, and so with the other take only the values of this sensor. That is, I want to extract the data received from the sensors. I hope to make myself understood.
In the following image you can see integer values (light sensor) and decimal values (acceleration sensor), so I only want to take the values of the light sensor in one variable, and the acceleration sensor in another variable, for later , to be able to put these data to use.
I've been finding out how to do it, but I can't find the way to do it, I've seen that it can be done with the string class, but I don't know how to do it precisely.
I appreciate your interest in helping me.
Do you always receive the data in pairs?
Why don’t you just read the data as it comes in via serial? Why bother with a String that you then have to break up again?
Similar to post #15 :
Each time you get data from a sensor, send a line terminated with an end of line character. That line should consist of the sensor identifier and the value that sensor returns.
Say:
S01 13.98
S03 5.0
S02 87.9
. . .
If you really want to pack it all in a string then look at json.
In order to make myself understand better, in the following image, the obtaining of values from the sensors is better observed.
What I want is to separate the luminosity and acceleration sensor data into different variables.
And with that I can separate the data from each sensor?
You could use something like this to read/process the data.
char data[32];
uint8_t idx = 0;
void setup()
{
Serial.begin(115200);
}
void loop()
{
while (Serial.available() > 0)
{
char c = Serial.read();
if (c == ',')
{
data[idx] = '\0';
int lum = atoi(data);
Serial.print("lum = ");
Serial.println(lum);
idx = 0;
}
else if (c == '/')
{
data[idx] = '\0';
float ace = atof(data);
Serial.print("ace = ");
Serial.println(ace);
idx = 0;
}
else
{
data[idx++] = c;
}
}
}
This expects lum variables to be terminated by ",", and ace variables to be terminated by "/".
If there is new data in the serial buffer then read the first 5 characters.
If those 5 characters are 'Ace: ' then set your acceleration variable to the result of Serial.parseFloat()
If those 5 characters are 'Lum: ' then set your luminosity variable to the result of Serial.parseInt()
See How to Read User Input from the Arduino Serial Monitor - Circuit Basics