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FRDM-KL43 FlexIO Register viewing on "EmbSys Register window"

Question asked by shaul dorf on Oct 22, 2016
Latest reply on Nov 7, 2016 by Alice_Yang

I can’t read FlexIO registers during debugging using "EnbSys Register"  window view.

I’m using KDS 3.2 & KSDK v2 and P&M SDA to evaluate FlexIO on FRDM-KL43Z board.

I wrote two PWM simple test programs, one that uses API and the other direct FlexIO register configuration (Bare-metal).

Reading FlexIO registers fails in both test it returns zero result.

As you can see at the same time reading other peripheral is O.K

Using API I have problem no output (probably configuration).

The Bare-metal program is working well I have output on PTD2 pin.

Using “not working” FlexIO display I have changed manually TIMCMP value from 0x7474 to 0x5555. The change has been accepted and PWM cycle has been changed.

Reading again this register returns again zero value.