Using the Battery Management Studio
(BQSTUDIO) tool to configure the
BQ34Z100-R2
to HDQ mode, a write to the Control command [0x00] of [0x7C40] is required.
To configure HDQ mode with
BQSTUDIO:
- Navigate to the Registers
screen. HDQ mode is configured by writing data [0x7C40] to Control command
[0x00].
- Click on the Control value
field.
- Write 0x7C40 into the text field
and click OK. Because the change in communication protocol involves
writing a flag for the new protocol to data flash, it takes about 200 ms to
complete. During this time, communications are disabled. Once the command takes
effect, the BQSTUDIO will no longer communicate with the gauge.
- Close BQSTUDIO. Change
communication connections from the gauge to the HDQ port of either the EV2300 or
EV2400 device. Run BQSTUDIO. The BQSTUDIO auto-detection only works for devices
that operate in I2C mode.
When the
BQ34Z100-R2
device is in HDQ mode, it will not be detected.
- Select
BQ34Z100-R2
manually. Click OK to all messages that indicate that the device is not
detected or not responsive. When the Registers screen starts, it will
take a period of time from when BQSTUDIO first tries to communicate with the
device in I2C before trying HDQ mode.
Once it is complete, the
Registers screen will display data as it had done initially when it was
in I2C mode. The refresh is noticeably slower, due to the slow speed of
HDQ.
Use the Registers screen only
while the
BQ34Z100-R2
is in HDQ mode. All other functions will not be supported in Battery Management
Studio.