[coreboot] spkmodem

Vladimir 'φ-coder/phcoder' Serbinenko phcoder at gmail.com
Fri Jan 18 22:04:06 CET 2013

On 18.01.2013 17:12, Peter Stuge wrote:

> Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>>> Hello, all. I send a patch to make coreboot output console using system
>>> beeper and a corresponding code to interpret those beeps. I publish it
>>> under GPLv2+ but other licensing arrangements are possible. This was
>>> very useful to get console on X201 where I have neither serial nor EHCI
>>> debug.
> I haven't gotten your original email? Weird.
>> This would need some improvements as currently it sometimes loses
>> bits and it causes it to lose sync. I'll think how to do it.
> What modulation and symbol rate are you using?

custom FSK variant at 10ms per bit. I'll just introduce a 5ms tone to
split bytes.

> //Peter

Vladimir 'φ-coder/phcoder' Serbinenko

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