SK-TDA4VM: TDA4VM edgeAI Kit GPIO

Neeraj P M

Prodigy 55 points

Part Number: SK-TDA4VM
Other Parts Discussed in Thread: TDA4VM

We are trying to enable a GPIO0_64 and get the User LED LD2 of TDA4VM edge AI Kit(PROC112A(001)) powered up.

We have written the PadConfig PRG0_PRU0_GPO1@ 0x0011c0b4 with the value 00060007.
Set the direction at 0x00600060 from 0xff79ff3f to 0xff79ff3e.
We have also set ICSSG_GPCFG0_REG at 0x0B026008 to enable GPIO mux.
We can see the status changing at 0x00600064 when setting and clearing the bits at 00600068 and 0060006C, but it is not getting reflected.(LED is still off)
We have verified the register values after booting using the k3conf app as well.

Are we missing something, any pointers are welcome.

NB: This is done in QNX startup, hw_init.c.

Regards,

Neeraj

over 2 years ago

0 Neeraj P M over 2 years ago

Prodigy 55 points

It would be really great if you could provide some documentation related to GPIO banks.

0 Takuma Fujiwara over 2 years ago in reply to Neeraj P M

TI__Guru 50403 points

Hi Neeraj,

My recommendation is to open up a ticket with QNX as well on this one. What I can provide is the general flow for initializing GPIO which can be found in this FAQ for TI's RTOS SDK: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1126741/faq-tda4vm-using-pdk-gpio-driver

I think the quickest route to resolving the issue is to see if QNX has a similar documentation to the one I shared or if they could provide instructions to use their API for initializing GPIO.

Regards,

Takuma

+1 Neeraj P M over 2 years ago in reply to Takuma Fujiwara

Prodigy 55 points

Hi Takuma,

There were an issue in what we were trying to do, we were using PRG0_PRU0_GPO1 in the PadConfig, actually this was PRG0_PRU0_GPO0, correcting this solved our issue.

Regards,

Neeraj

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SK-TDA4VM: TDA4VM edgeAI Kit GPIO