REG_TRACKER N returns 0xDEADBEEF

[AT38]

I'm using an FT813.
I've enabled extended touch mode, and I can read out tags for each touch point.
However, when I try to read out the tracker registers, only the first works and the rest return 0xDeadBeef.

I have the register addresses as follows:

Code Select Expand


REG_TRACKER   0x309000
REG_TRACKER_1 0x307004
REG_TRACKER_2 0x307008
REG_TRACKER_3 0x30700c
REG_TRACKER_4 0x307010


Any ideas why?

[BRT Community]

Hello,

You managed to get the REG_TRACKER location right, but the REG_TRACKER_x locations were wrong.

Can you try the following:

Code Select Expand

REG_TRACKER   0x309000
REG_TRACKER_1 0x309004
REG_TRACKER_2 0x309008
REG_TRACKER_3 0x30900c
REG_TRACKER_4 0x309010

Best Regards,
BRT Community

[AT38]

Whoops. Seems I dropped a 2 from the base address when adding the offsets.

Cheers.