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z75-v160

Michael Smolen
Prodigy 60 points

For the z75-v160, may I request verification of the Reserve Capacity units:

    Reserve Cap-mAh: signed integer, 2 bytes, value 0 - 9000, mAh

    Reserve Cap-mWh: signed integer, 2 bytes, value 0 - 14000, 0.1 Wh

Particularly, Reserve Cap-mWh: mWh, 10 mWh, 0.1 Wh?

Thank you.

  • 0
    TI__Intellectual 2650 points
    Did you resolve this question ? It looks to me like the FLASH stored values are scaled to 10mWh but this may be different to what the EVSW displays in the FLASH. Have you tried using the pro screen to read the raw data flash locations ?
  • 0 in reply to Mike Ewer
    Prodigy 60 points
    The question is not resolved just yet. TI documentation (of z75 and other FG's) was reviewed and thus some confusion. The hope and preference was for response from TI as to exact unit.
  • 0 in reply to Michael Smolen
    TI__Intellectual 2650 points

    Hi Michael,

    I was just reviewing activity from before the New Year to make sure nothing got inadvertently dropped and spotted this issue. Is this something you still need support on or did you discover answer on your own?

     I agree some of the documentation is unclear. Generally units for these types of things seem to be either  in either milli or centi ( i.e. 10m) quantities. The reference to 0.1W and 0.1Wh looks wrong to me. Generally my best advice for the moment is to check how it is displayed in the EVSW Data FLASH tab ( vs your desired setting) since the EVSW usually specifies the units for the figures it shows and knows what conversions to apply from whatever it sees in the actual FLASH memory. If you want to compare what the EVSW  is displaying with the actual figure stored in FLASH memory  ( i.e. is the figure in FLASH stored as cAh or mAh for example versus say mAh displayed in FLASH Memory window) then you can use the Pro Screen tab to write the FLASH Sub Class ID address ( remember to convert from the decimal address in manual to hex)  using command  0x77 to set the sub class id , (note see pages 79 AND 80 of SLUA310)  read the appropriate page using  command 0x79 and 0x7A since you want offsets 63,65,67 and 69  to find what hex bytes are actually stored in FLASH,  from which you can identify the scaling or units for those Hex values. Generally the scaling or units are chosen to allow the max data quantity to be stored in allocated number of bytes which is 2 in these cases.

    If you have a specific example or gg file you would like me to look at let me know.

    regards

    Mike