BQ76952EVM: SPI can't work

Hi Tan,

It looks like you have the pre-production version of the EVM which has the pre-production version of the IC. The pre-production version of the IC did not yet include the SPI feature. The BQ76952 is fully released to production now and the new version of the EVM has the new IC.

You can also replace the IC on your EVM with the final version. If you do this, you will also need to update the EVM firmware. Here is the link to download the firmware installer you will need: https://tidrive.ext.ti.com/u/hFkU19bZFNWWWRTW/EV2400Updater-0.32-windows-installer.exe.zip?l

Instructions for updating the firmware after installing the updater:

1. Open a command window from Start -> CMD

2. Change directories to the installation directory (typically cd C:\ti\EV2400Updater-0.32)

3. Run the .exe with a –s after the file name to update without any further interaction:  EV2400_Updater_v0032.exe -s

Best regards,

Matt

Thank you, now I can communicate by SPI. Is their command I can read all value(16volt+ current + temparture+pack )?

Hi Tan,

In Chapter 12 of the BQ76952 TRM (https://www.ti.com/lit/ug/sluuby2/sluuby2.pdf) you can see a complete list of the commands including the commands for reading the voltages, current, and temperature.

Best regards,

Matt