Initial Steps
bc01-an-100Pd
© Copyright Cambridge Silicon Radio Limited 2001-2004
This material is subject to CSR’s non-disclosure agreement.
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Casira User
Guide
4.5
Back Up New Casira Units
The following steps take you through the process of backing up your Casira firmware. Back up the firmware as
your first action with a new Casira. Making a back-up when you upgrade firmware allows you to return to a known
state in the event you incur problems as a result of the upgrade. You can back up the firmware at any time.
To backup Casira firmware:
1. Open the Casira unit. Access to the SPI header is required. Open the Casira case by unscrewing all
three screws located on the underside. Remove the case top.
2. Check the module serial number. The heart of a Casira kit is the radio module, held in place by the blue
clip in the centre of the motherboard. The motherboard itself provides a stable environment for the radio
module as well as easy access to all the important signals.
Each radio module has a unique serial number (this is not the same as the motherboard serial number).
Before proceeding, check the module serial number. Slide the clip up toward the connectors on the top
edge of the motherboard. The module will pop up. Remove the module and look on the underside for
the serial number (in the format S/Nxxxxx). Note the serial number.
To replace the module, fit the top edge of the module into the blue clip. Press down gently until the
module is correctly in place. Slide the clip down to lock it in place.
3. Connect the SPI cable. Take one of the SPI cables and connect it to the CN16 header on the Casira
motherboard. Take the other end of the SPI cable and connect it to the LPT port on your PC.
Note:
Ensure that the LPT port is in Normal mode and not in ECP/EPP mode. This can be configured with
the Device Manager under the System utility in the Windows Control Panel. For some PCs, it may
be necessary to change the BIOS settings. If you have any doubts about changing the port’s mode
and the effect it may have on any other interfacing devices, contact your Information Systems
department for advice.
4. Power up. Using the appropriate country specific AC adaptor, connect the power supply unit to the
mains supply. Plug the power supply unit output into the Casira power input.
5. Run BlueFlash. Start the BlueFlash application (installed as part of BlueSuite on the accompanying
CD ROM).
6. Select the LPT port. In the top drop down menu, select the LPT port to which the SPI cable is
connected. LPT1 is the default.
7. Check the connection. The BlueFlash window displays the status of the processor. The status of the
chip should state that it is idle. The button
Stop Processor
should not be greyed out.
A connection to BlueCore has not been established if BlueFlash is still trying to identify the flash
memory. The message “Identifying Flash….” will indicate this state. The flash identification process
should take two to three seconds.
If the flash is not identified, ensure that the LPT port is in Normal mode in the Windows Device Manager.
If the flash is still not identified, try to remove jumper CN18 on the Casira motherboard (near the SPI
connector). Due to different configurations of the LPT port on some PCs (particularly laptops), the
Casira’s reset circuit may be being asserted by a connection in the SPI cable to the PC LPT port. This
causes Casira to reset itself continuously. Removing jumper CN18 disconnects the reset pin on the SPI
cable from the Casira reset circuit. Reset the Casira, close BlueFlash and repeat Steps 4-7.
8. Stop the BlueCore Processor. Click
Stop Processor
. If you successfully connected to the module, the
BlueFlash window indicates recognition of the flash memory type and displays device information in the
top status bar as Figure 4.1 indicates.
9. Verify that the processor has stopped. When the processor has stopped, the
Stop Processor
button
changes to Start Processor. You can now upload or download the BlueCore firmware.
10. Click on
Dump
. To upload the entire Casira flash memory contents to a PC file, click on
Dump
.
11. Select a filename. A
Save as
window displays. Select a safe location and create a folder where the
backup will be stored. The firmware dump contains calibration information for the module including host
interface settings. CSR recommends that you use a descriptive filename that includes the module serial
number, your name or company and the Casira setup to make identification easy. For example:
“SN10337 – John Doe – Factory Settings”
