Re: [PATCHv7 7/9] FMTx: si4713: Add files to handle si4713 i2c device
On Tuesday 16 June 2009 13:06:09 Eduardo Valentin wrote: On Sun, Jun 14, 2009 at 02:31:55PM +0200, ext Hans Verkuil wrote: + if (rval 0) + goto exit; + + /* TODO: How to set frequency to measure current signal length */ Huh? I don't understand this TODO. The todo is about the property this device had, to report signal length 'signal length' or 'signal strength'? If it is the former, then I don't understand what you mean with that term. of a freq. It used to work like: user echoes the freq on sysfs entry. when reading the same entry, it reports the signal noise there. This is something which I still don't know the proper place to put. I thought in another ext control. But I don't know if this fix into the fm tx controls. Maybe I should use a private one ? I need to understand this better first. Regards, Hans -- Hans Verkuil - video4linux developer - sponsored by TANDBERG Telecom -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCHv7 7/9] FMTx: si4713: Add files to handle si4713 i2c device
On Tue, 2009-06-16 at 13:22 +0200, ext Hans Verkuil wrote: On Tuesday 16 June 2009 13:06:09 Eduardo Valentin wrote: On Sun, Jun 14, 2009 at 02:31:55PM +0200, ext Hans Verkuil wrote: + if (rval 0) + goto exit; + + /* TODO: How to set frequency to measure current signal length */ Huh? I don't understand this TODO. The todo is about the property this device had, to report signal length 'signal length' or 'signal strength'? If it is the former, then I don't understand what you mean with that term. of a freq. It used to work like: user echoes the freq on sysfs entry. when reading the same entry, it reports the signal noise there. This is something which I still don't know the proper place to put. I thought in another ext control. But I don't know if this fix into the fm tx controls. Maybe I should use a private one ? I need to understand this better first. Regards, Hans Transmitter turns into a receiver and measures the RSSI level of the frequency. If it's high ( -90 -100dB), it's probably not a good idea to transmit any on such frequency as the interference is too great. - Eero -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCHv7 7/9] FMTx: si4713: Add files to handle si4713 i2c device
On Tue, Jun 16, 2009 at 01:30:08PM +0200, Nurkkala Eero.An (EXT-Offcode/Oulu) wrote: On Tue, 2009-06-16 at 13:22 +0200, ext Hans Verkuil wrote: On Tuesday 16 June 2009 13:06:09 Eduardo Valentin wrote: On Sun, Jun 14, 2009 at 02:31:55PM +0200, ext Hans Verkuil wrote: + if (rval 0) + goto exit; + + /* TODO: How to set frequency to measure current signal length */ Huh? I don't understand this TODO. The todo is about the property this device had, to report signal length 'signal length' or 'signal strength'? If it is the former, then I don't understand what you mean with that term. of a freq. It used to work like: user echoes the freq on sysfs entry. when reading the same entry, it reports the signal noise there. This is something which I still don't know the proper place to put. I thought in another ext control. But I don't know if this fix into the fm tx controls. Maybe I should use a private one ? I need to understand this better first. Regards, Hans Transmitter turns into a receiver and measures the RSSI level of the frequency. If it's high ( -90 -100dB), it's probably not a good idea to transmit any on such frequency as the interference is too great. Yes, sorry I've made some really bad phrasing. It is Strength. It is a feature to measure Received Signal Strength Indication (RSSI). As mentioned by Eero, it's not a good idea to transmit any on freq which the measurement is being done. - Eero -- Eduardo Valentin -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCHv7 7/9] FMTx: si4713: Add files to handle si4713 i2c device
On Tue, 2009-06-16 at 13:50 +0200, Valentin Eduardo (Nokia-D/Helsinki) wrote: Yes, sorry I've made some really bad phrasing. It is Strength. It is a feature to measure Received Signal Strength Indication (RSSI). As mentioned by Eero, it's not a good idea to transmit any on freq which the measurement is being done. It can't transmit any while this measuring is taking place - it's not a good idea to transmit any, if the measurement has been taking place and it is discovered that there's already a strong radio signal (on freq x). So it can be used to find out a channel that's good for transmission =) - Eero -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
