BQ40Z50EVM-561: Support required for interfacing BQ40Z50EVM-561 with microcontroller

Hi Milan,

There is no specific reference code for interfacing the BQ40z50EVM with a microcontroller using SMBus, however there may be external sources online where you can find reference code. 

Some reference documents that may help you along the way are SMBus Made Simple, BQ40Z50 Data Memory Programming for Mass Production, and Gauge Communication which has reference code for interfacing a gauge with I2C.

Regards,

Anthony Baldino

Hi Milan,

Below is section 13.1 from the bq40z50 Technical Reference Manual that documents how to use the manufactureaccess().

When following these steps, please be sure that the gauge is unsealed in full access, seen as the UNSEAL_FULL_ACCESS in the bqStudio commands.

https://www.ti.com/lit/pdf/sluua43 

Regards,

Anthony Baldino

Hi Milan,

Below is the process to move between the different security modes found in the bq40z50 Technical Reference Manual Section 10.5:

https://www.ti.com/lit/pdf/sluua43 

This FAQ can also assist in the process of unsealing the gauge to full access.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1106900/faq-how-to-enter-unseal-or-full-access-modes-after-sealing-the-gauge 

Regards,

Anthony Baldino