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configuring and calibrating bq20z65 without API

swapnil dadhe
Prodigy 145 points
Other Parts Discussed in Thread: BQ20Z65

Hi,

I have the following doubts regarding the calibration and configuration of the gauge :

1>Can the bq20z65 be calibrated without the bqeasy API  and EV2300 using a microcontroller and SMbus communication ?

2>Also how can the learning process be started without the API ?

3>For the manufacturer access without the API , i would first send a start condition, followed by the address ,read/write bit, command code (0x00), and then the 16 bit data. After that if i wish to write to the device type , how would i do it ? I am not understanding the significance of the 16bit number associated with all manufacturer access commands , like for  " device type " it is 0x0001 .

 

Thanks in advance .

 

  • 0
    TI__Genius 10235 points

    1) Yes, the gauge can be calibrated using a micro and SMBus communication. The SLUA379 document contains sample code for doing this in VB6.

    2) The learning process can be done without bqEasy. To do so, please follow the step-by-step instructions in the SLUA334B document.

    3) Manufacturer Access is used for reading data only. It is used a status and information register. The data accessed by Manufacturer Access is high level information about the gauge and cannot be changed. There are a number of locations in data flash in the SBS Configuration and System Data tabs that can be changed and used for customizing the gauge.

  • 0 in reply to Chase7071949597
    Prodigy 145 points

    thanks Chase ,

    but i still havent got a clarity on point 3. Does that mean only ti can alter the parameters under manufacturer access ? if not can you tell me the exact steps i should follow to alter the parameters under manufacturer access WITHOUT API AND EV2300 USING SMBUS.

  • 0 in reply to swapnil dadhe
    TI__Genius 10235 points

    The parameters in Manufacturer Access can not be altered. They are read only and are programmed by TI before the gauge ships.