AM2432: Eqep position latching

Maor Shalom

Part Number: AM2432

Tool/software:

I am using the EQEP module to read incremental encoder feedback. Up until now I used the index position latching (EQEP_LATCH_RISING_INDEX) and read it from EQEP_getIndexPositionLatch()

now, I want also to latch position using EQEP_LATCH_UNIT_TIME_OUT and read EQEP_getPositionLatch

will setting the EQEP_setLatchMode with (EQEP_LATCH_RISING_INDEX | EQEP_LATCH_UNIT_TIME_OUT) provide what i need ?

Thanks

Maor

7 months ago

0 Paula Carrillo 7 months ago

TI__Mastermind 38990 points

Hi Maor, after checking the code it seems to me EQEP_setLatchMode(gEqepBaseAddr,EQEP_LATCH_RISING_INDEX | EQEP_LATCH_UNIT_TIME_OUT) should work for what you want to do. Let us know if you face any issue or if it is not working as expected

Thank you,

Paula

0 Maor Shalom 7 months ago in reply to Paula Carrillo

Prodigy 240 points

But can the EQEP's HW support both latches in parallel ?

0 Paula Carrillo 7 months ago in reply to Maor Shalom

TI__Mastermind 38990 points

Hi Maor, yes, this should be OK.

"latchMode" can be set as an OR between form several values

Inside EQEP_setLatchMode() function reads the current value of the QEP Control register, clears the bits related to the latch mode (QCLM, IEL, SEL), and sets the new latch mode by performing a bitwise OR operation with the latchMode.

Thank you,

Paula

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AM2432: Eqep position latching