Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Get integer value from character array

I have character arrays of 3 ascii characters representing range values from a sonar. I need to do some calculation on these values now. How can I convert the ascii char array to a valid integer ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Awesome the C method is what I was looking for. however, when I add the following call to convert...

int Sonar_Height_Int = atoi(Sonar_Height);

Where Sonar_Height is declared as char* Sonar_Height[3]

because the sonar I am communicating with through uart sends data as a set of

3 ascii char digits representing the range distance in inches.

I get the following warning...

passing arg 1 of `atoi' from incompatible pointer type

What does this warning mean and in what way will it affect my program's performance?