BQ40Z50-R2: Register confugaration

Mohan Khedkar

Part Number: BQ40Z50-R2

Hello sir,

I am using STM32CubeMX tool to measure current ,voltage and temperature of Li-ion battery which is connected to gauge(BQ40Z50R2).After sending a command address for voltage (0x09), current (0x0A) and temperature (0x08) and it gives value in Hex. After converting hex value in decimal ,current and voltage value shows appropriate but unable to convert hex value of temperature into degree celcious.So,what is the solution for it sir?

over 6 years ago

0 Batt over 6 years ago

TI__Mastermind 42535 points

Hi Mohan,

The temp is reported in K. For eg 25C or 298K is reported as 0xBA0.

0 Mohan Khedkar over 6 years ago in reply to Batt

Intellectual 340 points

Thanks for your response sir , but decimal value of 0xBA0 is 2976.So how can we write 298k for 0xBA0 or vice versa? .I just want to know the conversion of hex value(0xBA0) to 298k value.

Thanks

Mohan .

0 Batt over 6 years ago in reply to Mohan Khedkar

TI__Mastermind 42535 points

Hi Mohan,

I'm sorry that was my mistake. The temperature is reported to a tenth of a Kelvin. So 25C will be 298K that is 0xBA4 in hex.

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BQ40Z50-R2: Register confugaration