KIT912J637EVME Current Measurement Result register

cancel
Showing results for 
Search instead for 
Did you mean: 

KIT912J637EVME Current Measurement Result register

441 Views
dpc1001
Contributor I

Hi all

  I recently used KIT912J637EVME to measure current of batteryabout Current Measurement Result register (ACQ_CURR1 / ACQ_CURR0)I have some questions.

  I know the CURR are two's complement 24-Bit signed integer result register for the current measurement channel. but what are the meaning of CURR1 and CURR0 respectivelyforexample if I take a set of data ACQ_CURR1 ACQ_CURR0 are 0xFFE740,how to convert the date into the actual current value(A or mA). Look forward to your favourable reply.

Thanks very much!

Labels (1)
0 Kudos
1 Reply

120 Views
reyes
NXP TechSupport
NXP TechSupport

Hi,

Hi,

If ACQ_CURR > 0x7FFFFF, CURR = (ACQ_CURR – 0x1000000)

So in your example, the current is 0xFFE740 – 0x1000000 = - 6336

Rshunt = 100µΩ shunt. The best is to remember that the 1 LSB = 0.1µV.

Have a great day,
Jose Reyes

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
----------------------------------------------------------------------------------------------------------------------

0 Kudos