Texas Instruments bq26500EVM, Руководство пользователя

Страница: 9 / 17

www.ti.com
Operation
8 Operation
This section details the operation of the bq26500EVM software.
8.1 Starting the Program
Run the program from the Start → Programs → Texas Instruments → bq26500 Battery Monitor menu
sequence. The software defaults to PC USB port for communication. If the EV2300 is connected to USB
port, the program should load and display the initial data screen as shown in
Figure 7 .
Figure 7. Initial Register Screen
If the EV2300 is not connected to a USB port, the program will display a USB error message and then
display the initial data screen with no data in the register locations.
The com port can be changed by selecting the port under the options menu.
8.2 Initialization
This section describes the settings that must be made before the bq26500 is evaluated.
8.2.1 Loading the Sense Resistor Value
The bq26500EVM comes with a 20-m
Ω
sense resistor on the circuit board. Make sure the sense resistor
value is entered in the RS box at the top of the initial register screen. This value is used by the PC
program to convert the bq26500 data set to engineering units. Checking the display engineering units box
displays the data set in engineering units. No check mark displays the data set just as the bq26500
calculates them, ie, in units of 3.0-µVh counts.
8.2.2 Programming the bq26500 EEPROM
Each bq26500 is programmed at the factory with default values in the EEPROM. The values in EEPROM
should be changed to match specific applications. The EEPROM values can be read by using the
EEPROM screen (
Figure 8 ).
9 SLUU174A – March 2006 – Revised October 2013 bq26500EVM Single-Cell Battery Fuel Gauge Evaluation Module
Submit Documentation Feedback
Copyright © 2006–2013, Texas Instruments Incorporated