Browse Prior Art Database

Bluetooth based Firmware flashing

IP.com Disclosure Number: IPCOM000010275D
Original Publication Date: 2002-Nov-14
Included in the Prior Art Database: 2002-Nov-14
Document File: 2 page(s) / 25K

Publishing Venue

Motorola

Related People

Norbert Roettger: AUTHOR [+3]

Abstract

This paper describes a novel procedure for Bluetooth based fast flashing. The technique can be applied to all Flash memory based devices.

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Bluetooth based Firmware flashing

byNorbert Roettger, Kerstin Harenberg, Klaus Lindner

Abstract

This paper describes a novel procedure for Bluetooth based fast flashing. The technique can be applied to all Flash memory based devices.

Introduction

During production in the factory and during firmware or codeplug updates in the field, it is desired to reduce the time needed to program or re-program the firmware or configuration data (codeplug data) of Flash memory based devices. Examples of such devices are mobile or portable phones.

Problem To Be Solved

The number of Flash memory based devices is growing rapidly, and is replacing former low cost ROM based memory configurations, even in low cost consumer devices. The programming time, especially during production and also the time to upgrade the firmware in the field, is a major cost contribution for Flash based devices. The rapidly growing firmware size for 2G and future 3G mobile phone applications demands new ways for firmware flashing.

Proposed Solution to the Problems

This paper describes a novel wireless programming environment and flash algorithm that cut down the virtual programming time per Flash device to only a few seconds. Another advantage of this novel approach is the wireless fault tolerant mode, which minimizes unwanted physical connections to the programming device.

A Bluetooth link can be configured into a mode where the master device can talk to up to seven slave devices in duplex mode, with a bit rate of 72...