Dear Expert
We designed a BMS board, and after the electroreposition, sometimes the initial transformation is reactive, sometimes the initialization is not work.
If the initial transformation is done, the alert signal will be generated, and the normal read-write bq76952 register is set.
Without work, through MCU's single-step tracking debugging, the discovery sent bq76952 address 0x10 without an ack return.
The reset signal is made by MCU gpio for 100ms high level, connected to the rst_shut pin of bq76952.
How should you set up the bq76952 after the power initialization or reset?
The initialization process is as follows:
Ts2 pull low 60ms
Enter configuration mode
configure
Exit configuration mode
Measure the reg18 voltage, which is 1.8v.
When the i2c bus sends 0x10, it still doesn't receive an ack signal.
In addition, the low side mosfet control made by using low-side fets with the bq76952 battery monitor familyis.
In addition, it is normal to connect MCU with evmcu and i2c communication through a flying line.
