Read Csv and assign Varriable

Other Hardware Storage
1

am struggeling to read a .csv file and assign them to different variables.
I’m logging different sensors from a Weatherstation.
In purpose of displaying them in a graph, I have to read a previously saved csv.
Each line consists of seven values as shown beneath:

0,3,10-02-2022,00:01,33
1,0,10-02-2022,00:02,7

DataType: byte,byte,char[8],char[8],short
Variable: motor, path, date, time speed
Delimitor: ','

Could someone be so kind to shed me some light on this?

2

Well, we can hardly help clean up your mess without knowing what it is. Please post your best attempt, in code tags. Then we can move from vague generalities to specific details.

3

Use https://www.arduino.cc/reference/en/language/functions/communication/serial/readbytesuntil/ to read one line. I know that it's under Serial, but will work for files as well.

After that, you can parse with e.g. https://linux.die.net/man/3/strtok.

  1. Robin's Serial Input Basics - updated has an example; you can work directly on the buffer where you store the line, you don't need to make a copy.
  2. Other example: C library - strtok() function
4 
byte motor = file.parseInt();

byte path = file.parseInt();

char dateBuffer[15];
int lenDate = readBytesUntil(',', dateBuffer, 14);
dateBuffer[lenDate] = '\0';

char timeBuffer[15];
int lenTime = readBytesUntil(',', timeBuffer, 14);
timeBuffer[lenTime] = '\0';

short int speed = file.parseInt();