Original question:
sir i know , but after connecting quadrature pulse generator , value are changing in register variation is high , i need to find frequency using time period , later speed i need to find ,eqep->QCPRDLAT if i use this register , value present in that register is 0 . why can u help me
thank you,
jeeva
Hi Jeeva,
The latching will be occur on two conditions based on the value of the QCLM
If the QCLM is zero then latching will be happen when CPU reads the QPOSCNT register.
If the QCLM is one then latching will be happen after unit time.
The default value of this bit is zero right so the latching will happen only when CPU reads QPOSCNT register only, without reading this register if you perform direct read operation on QCPRDLAT then you will get zero value only.
My suggestion would be first trying to write QCLM as 1 and then try to read latch register which will automatically update for each unit time.
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Thanks & regards,
Jagadish.
