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From: TANGAo Khaled <ktangao-neli@orange.fr>
To: linux-dvb@linuxtv.org
Subject: [linux-dvb] the function " int ioctl(int fd, int request = FE_READ_SNR, int16_t *snr); "
Date: Wed, 30 Jul 2008 15:34:07 +0200	[thread overview]
Message-ID: <48906DCF.6020300@orange.fr> (raw)

Hello.

   I am working to design a software and i am using Frontend APIs. But I 
still have a big problem witch, i do not understand. I want to know the 
unit (linear or dB) of the value returned by this function:

int ioctl(int fd, int request = FE_READ_SNR, int16_t *snr);

 I would like to display an information to the user of my program,about 
the quality of the signal his antenna picked up. To do this, i think the 
best way is to display a graphic representing a percentage. But the 
current value I read, (-258) is unusable like this. So can you please, 
give me the unit of the value or give me a link to find what i am seeking?

Thank you

-- 
Khaled TANGAO


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             reply	other threads:[~2008-07-30 13:34 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-30 13:34 TANGAo Khaled [this message]
2008-07-30 13:46 ` [linux-dvb] the function " int ioctl(int fd, int request = FE_READ_SNR, int16_t *snr); " Michael Krufky

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