Texas Instruments BQ27425EVM-G2B System-Side Impedance Track™ Fuel (Gas) Gauge Evaluation Module BQ27425EVM-G2B BQ27425EVM-G2B Datenbogen
Produktcode
BQ27425EVM-G2B
Operation
Figure 8. Data Flash Screen
To read all the data from the bq27425 data flash, click on menu option | Data Flash | Read All |.
To write to a data flash location, please make sure that the CFGUPMODE register in flash register is set
by sending the subcommand 0x13. Click on the desired location, enter the data and press <Enter>, which
writes the entire tab of flash data, or select menu option | Data Flash | Write All |. The data flash must be
read before any writes are performed to avoid any incorrect data being written to the device. Some of
these values are stored in RAM so a POR or power reset will change them back to the default value.
by sending the subcommand 0x13. Click on the desired location, enter the data and press <Enter>, which
writes the entire tab of flash data, or select menu option | Data Flash | Write All |. The data flash must be
read before any writes are performed to avoid any incorrect data being written to the device. Some of
these values are stored in RAM so a POR or power reset will change them back to the default value.
The | File | Special Export | menu options allows the data flash to be exported, but it configures the
exported data flash to a learned state ready for mass production use.
exported data flash to a learned state ready for mass production use.
The data-flash configuration can be saved to a file by selecting | File | Export | and entering a file name. A
data-flash file also can be retrieved in this way, imported, and written to the bq27425 using the | Write All
|button.
data-flash file also can be retrieved in this way, imported, and written to the bq27425 using the | Write All
|button.
The module calibration data is also held in the bq27425 data flash.
The bq27425 allows for an automatic data-flash export function, similar to the DataRAM logging function.
This feature, when selected via | Options | Auto Export |, exports Data Flash to a sequential series of files
named as FilenameNNNNN.gg where N = a decimal number from 0 to 9.
This feature, when selected via | Options | Auto Export |, exports Data Flash to a sequential series of files
named as FilenameNNNNN.gg where N = a decimal number from 0 to 9.
The AutoExport interval is set under the | Options menu | with a minimum value of 15 s. The AutoExport
filename also is set under the | Options menu |.
filename also is set under the | Options menu |.
When a check is next to | AutoExport |, the AutoExport is in progress. The same menu selection is used to
turn on/off AutoExport.
turn on/off AutoExport.
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bq27425 EVM: Single-Cell Impedance Track Technology
SLUU656A – October 2011 – Revised January 2013
Copyright © 2011–2013, Texas Instruments Incorporated