PAN1322
Application Note
55
Revision 1.2, 2013-12-18
Design Guide
After the RF tests are performed, the SPP-AT application must be downloaded into EEPROM again to
enable the usage of eBMU SPP Toolbox. Since the SPP Toolbox cannot work with the HCI application,
the SPP-AT application is normally downloaded via I2C interface. This requires a specific I2C
programmer. Please follow the instructions in [
]. Restoring of BD-address and OSC_Trim shall be
performed after downloading the SPP-AT application. An alternative way of restoring the SPP-AT
application is to overwrite parts of the EEPROM. This can be done using HCI Lite as described in the
following chapter,
9.4
Restoring from HCI to SPP (without using Aardvark)
Restoring from HCI application to SPP-AT application can be done in a few steps without using
Aardvark. The complete sequence consists of three major steps.
1.
Overwriting the EEPROM using HCI Lite, described in chapter
2.
Loading latest SPP SW version using SPP Toolbox, described in chapter
3.
Writing back BD address and oscillator trim value using SPP Toolbox, described in
chapter
9.4.1
Restoring SPP-AT - Overwriting EEPROM
To overwrite the EEPROM, two commands need to be sent, Intel_Manufacturer_Mode and
Intel_Raw_Write_Ext_EEPROM. Both these commands shall be sent using ”Send custom command”
found on the ”Connection Setup” tab in HCI Lite, see
. After overwriting the EEPROM a HW
reset shall be performed. The module will then restart. After restart when it tries to read the EEPROM
the overwritten part will be missing and the module will instead of loading the HCI SW load and use
the default SPP-AT application.