tools.c

//
// Tools for USB HID Autofire
//

void strrev(char* arr, int start, int end) {
    char temp;

    if (start >= end)
        return;

    temp = *(arr + start);
    *(arr + start) = *(arr + end);
    *(arr + end) = temp;

    start++;
    end--;
    strrev(arr, start, end);
}