Compilation failure when trying to use QEI

Martijn van Dijk

Prodigy 40 points

Other Parts Discussed in Thread: TM4C123GH6PM

Hi there,

I am trying to get the QEI hardware to work with this example code. I get this compilation error:

identifier "GPIO_PD6_PHA0" is undefined

identifier "GPIO_PD7_PHB0" is undefined

How can I solve this? Other things from TivaWare like the UART and SPI are working just fine!

Edit: more information:

I am using a Tiva C launchpad with Code Composer Studio

over 10 years ago

0 cb1_mobile over 10 years ago

Guru 117855 points

Might those definitions reside w/in QEI.h or pin_map.h? (I've not time to look, now) Should both fail - a "Windows Search" of the driverlib should succeed...

0 Martijn van Dijk over 10 years ago in reply to cb1_mobile

Prodigy 40 points

Those defenitions reside in pin_map.h. pin_map.h is included. By the way - I'm running linux with code composer studio 6.1.0.00104 and I have the latest tivaware installed.

0 Robert Adsett over 10 years ago in reply to Martijn van Dijk

Guru 27665 points

If you check the header file I suspect the definition is conditional on the specific variant used. Make sure you have defined the chip appropriately.

Robert

0 cb1 over 10 years ago in reply to Robert Adsett

Guru 47900 points

Robert's response - exploiting your newly arrived data - duplicates my recommendation.

0 Martijn van Dijk over 10 years ago in reply to Robert Adsett

Prodigy 40 points

pin_map.h is indeed full of ifdef statements. It looks like this defenition does not exist for my specific CPU. Does this mean that the quadrature encoder is not present?

0 Amit Ashara over 10 years ago in reply to Martijn van Dijk

TI__Guru**** 244400 points

Hello Martin,

Which TM4C device are you using (full part number). Also the corresponding data sheet will tell if the QEI module is present or not.

Regards
Amit

0 Martijn van Dijk over 10 years ago in reply to Amit Ashara

Prodigy 40 points

I'm using the TM4C123GH6PMI. On this page www.ti.com/.../tm4c123gh6pm I found that have to define PART_LM4F230H5QR to enable the right part of pin_map.h

The encoder now kind of works with this example code: forum.43oh.com/.../7170-using-harware-qei-on-tiva-launchpad but it only counts down, not up. What can I do about this?

0 cb1_mobile over 10 years ago in reply to Martijn van Dijk

Guru 117855 points

Might you be using past "StellarisWare" - rather than its replacement? Post StellarisWare 9453 - mention of LX4F devices - ceased! (and - btw - there never/ever existed an LM4F - all were marked LX4F...)

0 Amit Ashara over 10 years ago in reply to Martijn van Dijk

TI__Guru**** 244400 points

Hello Martin,

OK, so this device has the QEI module. The right define would be PART_TM4C123GH6PM. When you mention it counts down, could you explain better what is counting down?

Regards
Amit

0 cb1_mobile over 10 years ago in reply to Amit Ashara

Guru 117855 points

Hi Amit,

My firm has stuck w/StellarisWare. It was/is our understanding that TivaWare does not recognize past "LX4F" devices - thus my mention of StellarisWare.

Might you comment? Thanks.

0 Amit Ashara over 10 years ago in reply to cb1_mobile

TI__Guru**** 244400 points

Hello cb1,

You are correct. TivaWare only has support for TM4C devices.

Regards
Amit

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Compilation failure when trying to use QEI