Parsing integer strings?

Question

I need help with parsing a string of integers sent from another Arduino. The values will be like this 1, 0, 1234, 1234,

1 is a Boolean

0 is a Boolean

1234 are pot values

I would like for it to go to variables

Vpot is first pot value

Hpot is second pot value

C is first Boolean

Z is second Boolean

Thanks,

Ben Bonen

balearicdynamics · Answer

Hi Ben, please find below the method I have used in several string parsers with the Arduino boards. This will work for sure. Enrico /** \fn int charsToInt(int startChar, int numChars)
 \brief Convert a string from the command to integer

\param startChar initial character in the command string
 \param numChars number of characters composing the number
 \return The converted interger value
*/
int charsToInt(int startChar, int numChars)
{
 char * value_to_convert;
 String temp = String(6);
 int i;

for (i = 0; i < numChars; i++)
 temp += cmd.cmdData[i + startChar];

value_to_convert = temp;
 i = atoi(temp);

return i;
}

gadget.iom · Answer

My interpretation of his question is that he is trying to break the string into four variables. So 1, 0, 1234, 1234, would be put into variables C, Z, Vpot, Hpot When using code that defines start and length positions you would extract the final value (Hpot) by looking at a starting point of 12 and a length of 4. In the example string supplied above this would be sufficient to get the value 1234. The issue with position based referencing is that then the third part of the string fell below 1000 e.g.: 1, 0, 993, 1234, the final variable would be missing the first digit and only take the remaining 4 digits "234,"

Parsing integer strings?

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