[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH v2] af9033: implement ber and ucb functions



On 07.04.2012 17:34, Hans-Frieder Vogt wrote:
af9033: implement read_ber and read_ucblocks functions. Version 2 of patch that
reflects my findings on the behaviour of abort_cnt, err_cnt and bit_cnt:

- bit_cnt is always 0x2710 (10000)
- abort_cnt is between 0 and 0x2710
- err_cnt is between 0 and 640000 (= 0x2710 * 8 * 8)

in the current implementation BER is calculated as the number of bit errors per
processed bits, ignoring those bits that are already discarded and counted in
abort_cnt, i.e. UCBLOCKS.

It still increases UCBLOCKS counter every query even there is no signal at all. BER is in that case always maximum value. Hymps, maybe I just apply that still in order to go ahead...

status 00 | signal 0000 | snr 0000 | ber ffffffff | unc 0024b105 |
status 00 | signal 0000 | snr 0000 | ber ffffffff | unc 0024d815 |

One of my plans is to block that kind of "illegal" situations in frontend core level. As UCB and BER counters are only valid in case of demod is LOCKed.

regards
Antti
--
http://palosaari.fi/
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Linux Input]     [Video for Linux]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Photos]     [Yosemite Photos]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Devices]     [Yosemite Backpacking]

Add to Google Powered by Linux