Does Defendant have a right to appeal from the order denying the motion?

Defendant filed a timely notice of appeal from the order denying the motion. Counsel was appointed to represent defendant on appeal. On February 8, 2016, appointed counsel filed a brief raising no issues, but requesting this court to independently review the record pursuant to People v. Wende (1979) 25 Cal.3d 436. Defendant was advised by letter of his right to file a supplemental brief within 30 days. Defendant has not responded with a supplemental brief, and the time for filing has passed.