FM Tuner...TMC?

[Syphon Filter]

I don't a have Diamond yet but I had a quick query. Does TMC work on the Diamond, seeiing as it has an FM tuner this should be possible right?

[imranbashir_uk]

I don't a have Diamond yet but I had a quick query. Does TMC work on the Diamond, seeiing as it has an FM tuner this should be possible right?

AFAIK the Qualcomm MSM72001A does not support RDS-TMC (Traffic Message Channel). However, the Qualcomm chip does decode RDS (Radio Data System) but not all of the RDS standards only a small subset.

RDS is just a standard by which you can transmit additional digital data over an analogue FM signal.

RDS has several subset protocols defined within it e.g.

RDS – AF (Alternative Frequencies)
RDS – PS (Programme Service name)
RDS – TA (Traffic Announcements)
RDS – TP (Traffic Programme)
RDS – PTY (Programme Type)
RDS – RT (Radio Text)
RDS – CT (Clock Time and date)
RDS – DI (Decoder Identification)
RDS – PTYI (Dynamic PTY Indicator)
RDS – EON (Enhanced Other Networks information)
RDS – MS (Music Speech switch)
RDS – ODA (Open Data Applications)
RDS – PIN (Programme Item Number)
RDS – TMC (Traffic Message Channel)

In short, the Qualcomm chip cannot support RDS-TMC in hardware. It might be possible to write some code to decode RDS-TMC in software, as it is only a very straight forward text string (great final year project for a software student!). However, this would only be possible if Qualcomm have made the RDS API available through an SDK. And I don’t know the answer to that!

[Dark Fire]

In short, the Qualcomm chip cannot support RDS-TMC in hardware. It might be possible to write some code to decode RDS-TMC in software, as it is only a very straight forward text string (great final year project for a software student!).
Suggestion noted. Sounds cool, and would probably be fun. :)

[imranbashir_uk]

Suggestion noted. Sounds cool, and would probably be fun. :)

LOL, I guess you could do it during your summer hols rather than as a final year project so that it could be something we could actually use this year!

Maybe you can use something from the guys over at http://rdsd.berlios.de/

You’d also need to speak to Qualcomm to find out what the RDS API hooks are, and to TomTom to find out how the RDS-TMC data is formatted and used by them. I have a couple of contacts within TomTom who’s numbers I could pass on to you if you are really interested.

[Syphon Filter]

wow ok, so in THEORY it could be possible. Putting that theory into practice could be a different thing though. I am sure someone will figure it out if it is indeed possible.

But as it stands are we saying that it's NOT possible off the bat with say TomTom or Copilot Live installed?

[imranbashir_uk]

wow ok, so in THEORY it could be possible. Putting that theory into practice could be a different thing though. I am sure someone will figure it out if it is indeed possible.

But as it stands are we saying that it's NOT possible off the bat with say TomTom or Copilot Live installed?

Yep, that’s about right.

To be fair the easiest solution is to make sure you’re on an unlimited data account and just use something like TomTom live traffic.

[Syphon Filter]

Yep, that’s about right.

To be fair the easiest solution is to make sure you’re on an unlimited data account and just use something like TomTom live traffic.

I use copilot, I think i need to upgrade my copilot license and that should give me traffic updates over the air, i think its like £35 for 2 years which isnt too bad I suppose. maybe I should just stop being a cheapskate and buy it!!

[imranbashir_uk]

I use copilot, I think i need to upgrade my copilot license and that should give me traffic updates over the air, i think its like £35 for 2 years which isnt too bad I suppose. maybe I should just stop being a cheapskate and buy it!!

LOL,

I know exactly how you feel, I’m the same! But in my opinion you paid for the software why should you have to pay extra for the traffic updates.

A bit off topic but same with sky and its plus or HD service, you pay for the box, why do these services have to cost you extra, I just don’t like it!