How to read the encoder pulses count from the servo motor using QDEC example program.

[sharmelaraju]

Hi,

We need to interface ASDA a2 delta AC  servo motor  with  NRF52840 in our project.In this servo motor i need to get the position value and direction  so i interfaced servo motor with nrf 52840 .I have tried the example program QDEC in the peripheral folder. This servo motor has  3 pulse pin as A,B,  and Z  so i have connected these pins to the NRF52840  but if i compile the program  i am not able to get the position value from the ac servo motor  only  it is printing as QDEC example started and it is printing as system reset . can you plz tell me  what is the problem.

[Simon]

Do you have a logic analyzer? Could you attach it to A, B, and Z and provide the result here.

Best regards,

Simon

[sharmelaraju]

Thanks for the Reply.

Sorry for the late reply.

I was on holiday.

[Simon]

No problem. I'll wait for your reply about the logic analyzer.

[sharmelaraju]

Hi,

sorry for the late reply.

I have checked the encoder pulse output a and encoder pulse output b on oscilloscope. 

We are able to see the pulse  A and Pulse b  which are of 2 ms pulse width. But while i am trying in nrf51 through gpiote program. I could't able to count the pulses. The pulses are getting from the encoder output but not able to read in gpiote example program

plz give me the solution

[sharmelaraju]

I am waiting for your reply.

plz give me the solution.