DSTC after TFT Retrofiting

Interesting stuff. Where can the CANbus signal be intercepted/received? At the OBD2 terminal? I have a MY 2011 V70 where DSTC is disabled using the menu with the rotating knob and button on the left column stalk.
The other problem / lacking feature of the TFT cluster I've heard is that you cannot set the clock in non-Sensus cars (like mine).

I am currently reverse engineering the oldest digital dashboard Volvo has produced, from a Volvo 480 (1986-1995), because I want to put a custom computer in. The dashboard manufacturer (VDO) has put a custom Hitachi HD63A01V1 MCU in, which was quite advanced for the 1980s, but technology has progressed a lot the past 35 years. I need to buy some extra tools because multimeter and (digital) oscilloscope won't give me enough information to find out which signals are going from the computer to the LCD display driver. There are 5 wires, I've identified +5V, clock (17.6kHz) and signal ground, but two carry a signal with a DC offset - very unusual. So I thought a logic analyser would enable me to decode the signals, but they don't come cheap.
Bitscope BS10 is a bit expensive but has many features.
Zeroplus LAP-C 16032
The latter is supported in sigrok so I can use open-source software but lacks the arbitrary signal and clock generation, which is useful for prototyping.

Hmmm... choices choices.

I have a number of Raspberry Pi's and Arduinos floating around, and use both Linux and Windows 10 computers, so there's enough hardware, but my Python programming skills are nowhere near where I want it to be...

Do I hear the beginnings of a CFE-for-retrofitted-TFT ?

Hello all.
I would appriciate help, by finding config for these buttons on CCM panel.

That would narrow down my research on DSTC switch config.
Recap:
On 2003-2006 XC90 DSTC was operated via button in CCM, on XC90 after 2007 this function was moved to turn signal lever like on XC70/V70/S80 and so on. Also per Vida CCM - possible buttons into 2007-2011 include the DSTC switch. This makes me think - if the correct button config will be added to CCM, it will act as designed. So as far i have info about known configs of buttons above.
In total there 16 ways to lay doids on those 4 places, i do believe button without any diod installed is not possible, so there 15 options. Most of them are known, adding 3 unknown there will be only 5 options left, and im sure one of them will be the right on.

So which configuration did you use?

No idea is D5T5 working at all to get this done. I ordered Canny 7.2 from Russia, sniffed packet with Canhacker 3.2 which changes when DSTC is disabled by original instrument cluster. Built firmware for Canny, which later installed on CAN_H between CEM and BCM. Then simply pre-wired DSTC switch in CCM to Canny and now after 2sec press on DSTC switch - Canny bypasses all data to BCM back and forth - only 1 data string changes 2 bytes. Task accomplish. Its rather experimental - therefore I'm not doing a full write-up about the procedure. I don't want to be responsible for any errors in other people cars due to some unknown reasons.