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Speedway Reader IPJ-R1000 for Gen 2 UHF RFID

6. Firmware Upgrade

The Speedway reader provides methods for managing the firmware image which include:

• Upgrade to a new image

• Fallback to a previous valid image

• Restoration of factory defaults

These can be done without disturbing the current operation of the reader. The user may manage the upgrade process through

the steps described in this section.

Terms and Acronyms

• Client: the user program that uses the upgrade management service

• Primary image: the image that is currently running

• Secondary image: the image that is not running and may be the target of upgrading or fallback.

• Upgrade Configuration: the information for determining the upgrading procedure.

• Upgrade Image File: A file that contains the Speedway reader image used for upgrade. It is stored on a file server

and retrieved by the Speedway reader.

• Metafile: The data file that resides on a file server and contains the Upgrade Configuration information.

• Metafile-URI: The Universal Resource Identifier of the metafile.

• URI: Universal Resource Identifier as defined in RFC3986.

Dual Image Model

The flash layout can be viewed as consisting of primary and secondary images, each of which consists of three partitions, as

shown in Figure 6-1. The primary image is the image that the reader is currently running and the secondary image is used for

upgrade to a new image or fallback to a previous image.

Partition 0

Partition 1

Partition 2

Primary

image

Secondary

image

Speedway

OS Partition

Speedway

Configuration

Partition

Custom

Application

Partition

Custom

Application

Partition

Speedway

OS Partition

Speedway

Configuration

Partition

Figure 6-1 Dual Image Model

The three partitions in each image are:

• Partition 0, Speedway OS Partition (SOP). This partition contains the Linux OS image, file system, and Impinj reader

application.

• Partition 1, Speedway Configuration Partition (SCP). This partition contains the Impinj reader application

configuration and other general configuration data.

• Partition 2, Custom Application Partition (CAP). This partition may contain a custom application.

Partitions 0 and 2 can be individually upgraded, while Partition 1 can be upgraded only when Partition 0 is upgraded.

Upgrade is performed in the background, so that the current operation of the reader is not disturbed until the activation of the

new image, which is also controlled by the user.

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