From eefd46ab866bff0f1f19414db632fc46c4a0fd59 Mon Sep 17 00:00:00 2001 From: asterix Date: Tue, 10 Jun 2008 14:35:07 +0000 Subject: [PATCH] Fix brief. git-svn-id: https://src.develer.com/svnoss/bertos/trunk@1429 38d2e660-2303-0410-9eaa-f027e97ec537 --- bertos/cpu/avr/drv/ser_avr.c | 26 ++------------------------ 1 file changed, 2 insertions(+), 24 deletions(-) diff --git a/bertos/cpu/avr/drv/ser_avr.c b/bertos/cpu/avr/drv/ser_avr.c index cf47c09e..783f6cda 100644 --- a/bertos/cpu/avr/drv/ser_avr.c +++ b/bertos/cpu/avr/drv/ser_avr.c @@ -31,32 +31,10 @@ * * --> * - * \brief AVR UART and SPI I/O driver - * - * Rationale for project_ks hardware. - * - * The serial 0 on the board_kf board is used to communicate with the - * smart card, which has the TX and RX lines connected together. To - * allow the smart card to drive the RX line of the CPU the CPU TX has - * to be in a high impedance state. - * Whenever a transmission is done and there is nothing more to send - * the transmitter is turn off. The output pin is held in input with - * pull-up enabled, to avoid capturing noise from the nearby RX line. - * - * The line on the KBus port must keep sending data, even when - * there is nothing to transmit, because a burst data transfer - * generates noise on the audio channels. - * This is accomplished using the multiprocessor mode of the - * ATmega64/128 serial. - * - * The receiver keeps the MPCM bit always on. When useful data - * is trasmitted the address bit is set. The receiver hardware - * consider the frame as address info and receive it. - * When useless fill bytes are sent the address bit is cleared - * and the receiver will ignore them, avoiding useless triggering - * of RXC interrupt. + * \brief AVR UART and SPI I/O driver (Implementation) * * \version $Id$ + * * \author Bernardo Innocenti * \author Stefano Fedrigo */ -- 2.25.1