About FM and RDS modifying RDS signal transmited from the tablet is possible ?<br><br>I'm thinking of a small usage, a app that found the freest frequency (by listening fm with the transmitter) and change the frequency of transmitted music to the found one and send an rds signal by the transmitter, so you don't have to change frequency on your car receiver (or everything else).<br>
<br>I know that fm transmitter emit an rds signal ... but can that be changed ?<br><br>Does there is documentation about the fm transmitter and receiver somewhere on Maemo ?<br><br>Thanks a lot<br><br><div class="gmail_quote">
2010/1/6 Martin Grimme <span dir="ltr"><<a href="mailto:martin.grimme@gmail.com">martin.grimme@gmail.com</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br>
<br>
the FM receiver's interface for RDS is exposed via sysfs. So any<br>
application can read RDS data from it.<br>
The frequency bands the receiver is capable of are US/EUR (87.5 -<br>
108.00 MHz) and Japan (don't remeber, but I think starts somewhere at<br>
70 MHz). A region switch in the driver (sysfs-Interface again but as<br>
root) switches between the frequency bands.<br>
<br>
<br>
Martin<br>
<br>
<br>
2010/1/6, Aldon Hynes <<a href="mailto:Aldon.Hynes@orient-lodge.com">Aldon.Hynes@orient-lodge.com</a>>:<br>
<div><div></div><div class="h5">> I have been approached by a person interested in sending data from a sensor<br>
> via FM to a cellphone which would in term transmit this data to the<br>
> Internet. I am interested in figuring out if this is something that could<br>
> be done with an N900. With that, I have a few specific questions:<br>
><br>
> First, can anyone point me to information about how to programatically<br>
> receive RDS data? I've read that the FM receive app is supposed to do that,<br>
> but I haven't managed to receive RDS data that way yet, and I don't have the<br>
> source code.<br>
><br>
> Second, does anyone have any idea what frequencies the FM receiver can tune<br>
> into? The programs I've seen have focused on the traditional commercial FM<br>
> band, 88 Mhz to 106 Mhz. Can the FM receiver tune in higher or lower<br>
> frequencies? If so, what is the real frequency range of the FM Receiver.<br>
><br>
> Third, are there other data formats that can easily be sent and/or received<br>
> from the Nokia phone? If so, can people point me to any of these other data<br>
> formats?<br>
><br>
> Any help you can provide would be greatly appreciated.<br>
><br>
> Aldon<br>
><br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Benoît HERVIER - <a href="http://khertan.net/">http://khertan.net/</a><br><br>