BQ27220: Accessing Standard Commands

Akilarasan R

Part Number: BQ27220

Hi,

We are trying to access the BQ27220 gauge IC, we have connected i2c lines to zynq7000 Processing section's I2c channel. Is there any configuration required to read the battery voltage and temperature through standard commands? Or directly can be readable. Is there any source code available or at least read function format to access those 2-byte register?

over 1 year ago

0 Jonny over 1 year ago

TI__Mastermind 25021 points

Hello Akilarasan,

I believe section 6.1 of the BQ27220 Technical Reference Manual goes over this.

Regards,

Jonny.

0 Akilarasan R over 1 year ago in reply to Jonny

Prodigy 230 points

Hi Johnny,

Initially, gauge chip will be in SEALED or UNSEALED condition and what is the difference between them?

0 Jonny over 1 year ago in reply to Akilarasan R

TI__Mastermind 25021 points

Hello Akilarasan,

The following FAQ goes over the difference between the SEALED and UNSEALED modes.

Regards,

Jonny.

0 Akilarasan R over 1 year ago in reply to Jonny

Prodigy 230 points

Hi Johnny,

We need to do Data Memory Parameter Update (6.1 section of TRM) as a initial step, then only able access standard commands?

0 Jonny over 1 year ago in reply to Akilarasan R

TI__Mastermind 25021 points

Hello Akilarasan,

My apologies, if you were just wishing to use the standard commands you would just need to read from the start register listed in the TRM. For example, if you were wishing to read the voltage from the gauge you would just need to do the following.

Regards,

Jonny.

Power management

Power management forum

BQ27220: Accessing Standard Commands