Temperature sensor AD7410

Hi

I am using 4 x AD7410 in each TWI channel, using both TWI ports.  So, altogether 8 AD7410s.   ( I used the Adafruit breakout boards).

Initially I get the temperature readings correctly - used the Putty,    each time I manually reset the nRF52840DK.    The board is powered from my laptop's USB.  


22.37
22.50
23.00
22.50
23.00
22.62
23.00
23.25

After I  leave the DVK non-functional and  I reset it,  the board returns an error.  The same error appears  when I reset the nRF52840DK.  

app: ERROR 3 CNRF ERROR INTERNAL] at C: SDK 17 . 1.0 
pc at: ox00030CBF
app: End of error report

Could you provide any suggestions on identifying the root cause?

Thanks.

ShivImp

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