Operation

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7.2

PC Interface Connection

The following steps configure the hardware for interface to the PC.

•

Connect the bq27410-based EVM to the EV2300 using wire leads as shown in Table 4.

Table 4. Circuit Module to EV2300 Connections

bq27410EVM

EV2300

SDA

SDA

SCL

SCL

VSS

GND

•

Connect the PC USB cable to the EV2300 and the PC USB port.

•

For battery insertion detection configuration, see the data sheet for details.

The bq27410EVM is now set up for operation.

8

Operation

This section details the operation of the bq27410 EVSW software.

8.1

Starting the Program

Run bq27410 EVSW from the Start | Programs | Texas Instruments | bq Evaluation Software menu

sequence. The DataRAM screen (see Figure 7) appears. Data begins to appear once the

<Refresh>

(single time scan) button is clicked, or when the

<Keep Scanning> check box is checked. To disable the

scan feature, deselect

<Keep Scanning>.

The continuous scanning period can be set with the | Options | and | Set Scan Interval | menu selections.

The range for this interval is 0 ms to 65,535 ms. Only items that are selected for scanning are scanned

within this period.

The bq27410 EVSW provides a logging function which logs the values that were last scanned by EVSW.

To enable this function, select the Start Logging button; this causes the Keep Scanning button to be

selected. When logging is stopped, the Keep Scanning button is still selected and has to be manually

unchecked.

The logging intervals are specified under the | Options | menu with the maximum value of 65,535 ms. The

Log interval cannot be smaller than the scan interval because this results in the same value being logged

at least twice.

8

bq27410EVM: Single-Cell Impedance Track

™ Technology

SLUU482A

– February 2011 – Revised August 2011

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