[quoted lines by Vladimir 'φ-coder/phcoder' Serbinenko on 2012/03/30 at 02:03 +0200]
>> What's the danger of losing a serial device character if the device isn't >> polled for a while? >Relatively high unfortunately if UART buffer (16 characters AFAIR) is >overflown it starts discarding characters. If polling speed isn't enough >in practice we could start using interrupts but only to extend buffer, >not to have a complete interrupt handler. Brltty's serial implementation for grub can read and buffer as many bytes as possible each time brlttyUpdate() is called. How often will grub be calling brlttyUpdate()? -- Dave Mielke | 2213 Fox Crescent | The Bible is the very Word of God. Phone: 1-613-726-0014 | Ottawa, Ontario | 2011 May 21 is the End of Salvation. EMail: [email protected] | Canada K2A 1H7 | http://Mielke.cc/now.html http://FamilyRadio.com/ | http://Mielke.cc/bible/ _______________________________________________ This message was sent via the BRLTTY mailing list. To post a message, send an e-mail to: [email protected] For general information, go to: http://mielke.cc/mailman/listinfo/brltty
