BQ78350-R1: address 0x16 BatteryStatus() issue

Tommy Tzeng

Part Number: BQ78350-R1
Other Parts Discussed in Thread: BQSTUDIO, EV2400

Hi Team,

currently uesd BQ78350-R1 on the product, the continuous command require the return of battery status, but the return result will be change between 0xe7 and 0xe0,

the return value is EC3:0(Bit 3:0):Error Code: 0x7 UnknownError, is this correct?

the return value is correct of the other Bit, only have the EC3:0(Bit 3:0):Error Code is different, why the same command is continuous and battery status has not change, why is the return result different?

under what condition will UnknownError be return?

over 5 years ago

0 Matt Sunna over 5 years ago

TI__Guru* 81034 points

Hi Tommy,

Since this is a 16 bit register, can you let me know the full contents?

Best regards,

Matt

0 Tommy Tzeng over 5 years ago in reply to Matt Sunna

Genius 5690 points

Hi Matt,

the data return by the same command is e0 00 (0000000011100000) and e7 00 (0000000011100111) and always re-cycle.

0 Matt Sunna over 5 years ago in reply to Tommy Tzeng

TI__Guru* 81034 points

Hi Tommy,

This is a strange error. It could be caused by some error in the communication between the host and the gauge.

Is this only occurring on one devices or do you see it on more than one device? If it is only on one device, I recommend reprogramming the device firmware to see if the error still occurs.

Is the error occurring using the EV2400 and BQStudio or only with the host processor? You may try connecting to an EV2400 and BQStudio to see if the error still occurs.

Matt

Power management

Power management forum

BQ78350-R1: address 0x16 BatteryStatus() issue