[maemo-developers] FM RDS data

From: Martin Grimme martin.grimme at gmail.com
Date: Wed Jan 6 22:43:33 EET 2010

the FM receiver's interface for RDS is exposed via sysfs. So any
application can read RDS data from it.
The frequency bands the receiver is capable of are US/EUR (87.5 -
108.00 MHz) and Japan (don't remeber, but I think starts somewhere at
70 MHz). A region switch in the driver (sysfs-Interface again but as
root) switches between the frequency bands.


2010/1/6, Aldon Hynes <Aldon.Hynes at orient-lodge.com>:
> I have been approached by a person interested in sending data from a sensor
> via FM to a cellphone which would in term transmit this data to the
> Internet.  I am interested in figuring out if this is something that could
> be done with an N900.  With that, I have a few specific questions:
> First, can anyone point me to information about how to programatically
> receive RDS data?  I've read that the FM receive app is supposed to do that,
> but I haven't managed to receive RDS data that way yet, and I don't have the
> source code.
> Second, does anyone have any idea what frequencies the FM receiver can tune
> into?  The programs I've seen have focused on the traditional commercial FM
> band, 88 Mhz to 106 Mhz.  Can the FM receiver tune in higher or lower
> frequencies?  If so, what is the real frequency range of the FM Receiver.
> Third, are there other data formats that can easily be sent and/or received
> from the Nokia phone?  If so, can people point me to any of these other data
> formats?
> Any help you can provide would be greatly appreciated.
> Aldon
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