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Operation

8 Operation

This section details the operation of the bq3055 EVSW software.

NOTE: The EV2300 or EV2400 driver does not support Windows Sleep or Hibernate states. If

communicating with the EV2300 or EV2400 or the EVM presents a problem, unplug the USB

cable and then plug it back in. If the problem continues, determine if the EVM is in Shutdown

mode. The bq3055 can be awakened by momentarily pressing SW1 if cell voltage is present.

8.1 Starting the Program

With the EV2300 or EV2400 and the bq3055EVM connected to the computer, run bq3055 EVSW from the

Desktop Icon or Start | All Programs | Texas Instruments | bq Evaluation Software menu sequence. The

SBS Data Screen 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 via the Options and Set Scan Interval menu selections. The

range for this interval is 0 ms to 65535 ms. Only items that are selected for scanning are scanned within

this period.

The bq3055 EVSW provides a logging function that logs the values that were last scanned by EVSW. To

enable this function, click 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 interval is specified under the Options menu with the maximum value of 65535 ms. The Log

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

least twice.

SLUU824– December 2011 bq3055EVM SBS 1.1 Compliant Advanced Gas Gauge Battery Management

Solution EVM

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