Qualcomm Inc. played host to a Mobile Codefest and Hackathon June 26 at the Hilton San Diego Bayfront Hotel. The event, aimed at mobile software developers, preceded the Uplinq 2012 conference set June 27 and 28, also being held at the same site.

The Uplinq conference is designed to give developers a cross-platform view of how to exploit the complete hardware-software systems in today’s mobile devices, and foster better business connections, Qualcomm said.

Among the breakout sessions for this year’s Uplinq: “Growing the Ecosystem: the Future of HTML5 Web Apps,” “Drive Consumer Engagement with Vuforia,” and “Tapping Into the Next Generation of Location-Based Applications.”

The Hackathon was expected to draw about 300 developers who competed for a total of $50,000 in prize money. There were four categories with the first place prize money of $5,000 each, and a grand prize of $25,000 for the most innovative application.

Speakers at the Uplinq event include CEO Paul Jacobs, Aaron Levie, co-founder of Box; Peter Diamandis, CEO of the X-Prize Foundation; and John Hering, co-founder of Lookout.