831.17 Violation of s. 831.16; second or subsequent conviction.—A person previously convicted of violating s. 831.16 who is again convicted of violating that statute committed after the former conviction on three distinct charges of such offense committed within a 6-month period commits a felony of the second degree, punishable as provided in s. 775.082, s. 775.083, or s. 775.084.