Setup Information:
- A lead acid, 12V, 40Ah battery is connected to the BQ34Z110EVM as per the schematic.
- The EVM is connected to the PC via the EV2300, HPA002. The mode of communication between EV2300 and the BQ34Z110EVM is I2C.
- Connections are as per the details in the schematic of BQ34Z110EVM as in 'sluua15.pdf'.
- The correct BQ Gas Gauging Evaluation Software and required drivers are installed and communication is established.
- The system on which the system is connected and installed is a WindowsXP OS based Desktop.
- Communication is established between the BQ34Z110EVM and the BQ Gas Gauging Evaluation Software through the EV2300.
Issue: Teething problems in usage of the user interface. - I know that the solution to the issue might be very trivial, but I am not aware of the solution.
- I am able to communicate with the BQ34Z110EVM using the evaluation software. We can read the battery voltage and current values. Can log the charging and discharging data.
- Cannot do Voltage Calibration and Pack Current Calibration, but Can perform the Current and CC offset calibration.
- Cannot change parameters in the Data Flash screen. The content is shown in RED and once the 'Write All' or 'Write All and Preserve' command is issued, reverts back to old default settings with normal text background.
- Don't know how to use your I2C pro screen to communicate with the device to positively write data. Can read the data bytes from the chip using the read command on the page. Have been able to write only one byte of data to the device, only the command byte. Verified on Oscilloscope. May be as the device is in 'Sealed' mode, it does not respond.
- Unsure of the status of the chip, 'Sealed/unsealed'. Status of SS and FAS is green '0', But still cannot change register data. I think the chip is in 'Sealed' mode. But am unable to change to 'Unsealed'. I dont know where to enter the data in the I2C pro screen.
- I have downloaded the .gg file of the Data flash, I uploaded the same on the chip with modification in
- Cell Taper Voltage = 110, instead of 100 mAh
- CC Threshold = 3600, instead of 900 mAh
- After loading the edited .gg file found the update on the screen, but once I issue a 'Write All' or 'Write All and Preserve' the data flash content is reverted back to default values.
- I tried to load one of the 'senc' files using the I2C pro screen but got the NAck error 722 in return, maybe since I couldn't or didn't change to ROM mode. But other read communication is happening.
- Also I am not able to understand the legends in the Graph sheet. What is meant by some legends. eg., Elapsed (time elapsed during log), State of Charge (Battery Charge Capacity). But what is Control and Control Status.
Please guide me through the process of 'unsealing' the chip, if sealed or as necessary otherwise.
Please find attached some screenshots, the '.gg' file, etc...
Please let me know if you require any further details.
Data recorded while charging the Pb-Acid battery - (Please visit the site to view this file)
The '.gg' file - (Please visit the site to view this file)
The edited '.gg' file that I tried saving - (Please visit the site to view this file)
The DataRam Screen shot - SS and FAS flags appear green '0'
Error while trying to do the Voltage Calibration
Error while attempting to write LED configuration register, same error while updating other fields too
The legends like 'Control' and 'Control Status', what do they mean?
with regards,
Vishal Vijay Singh
+91 99401 31329