ADC + BLE IN ADC

[pavan_142297]

Hello All,

I configure ADC & BLE UART in one code. we are using 4 ADC channels. but I observed that there is a timing delay approx 2-3 sec to update ADC. we are using a 1 kb buffer for each ADC. to calculate voltage and current values.
anyone can suggest, how we can resolve the time delay issue from ADC configuration.

[Jared]

Hi,

Could you share your code and specify from what point you measure 2-3 seconds?

regards

Jared 

[pavan_142297]

Hi,

We are trying to measure 240VAC 50Hz supply and also Current being consumed using a CT. 

240VAC is dropped down and oscillates between 600mV to 1.8V with 50Hz frequency using a resistor bank & a capacitor filter. Each cycle of our 50Hz signal is 20ms. This AC signal is being read by an ADC of nRF52810. But I observed that when voltage is being increased or decreased nordic chip is taking time to reflect those signal changes.

[Jared]

pavan_142297 said:

But I observed that when voltage is being increased or decreased nordic chip is taking time to reflect those signal changes.

The supply voltage of the nRF52 or the measured voltage? Also, how do you measure the elapsed time it takes to take a sample?