/*

* Copyright (C) 2015 Niek Linnenbank

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

#include <FreeNOS/System.h>

#include "IntelSerial.h"

IntelSerial::IntelSerial(u16 base)

{

m_io.setBase(base);

/* 8bit Words, no parity. */

m_io.outb(LINECONTROL, 3);

/* Enable interrupts. */

m_io.outb(IRQCONTROL, 1);

/* No FIFO. */

m_io.outb(FIFOCONTROL, 0);

/* Data Ready, Request to Send. */

m_io.outb(MODEMCONTROL, 3);

/* Set baudrate. */

m_io.outb(LINECONTROL, m_io.inb(LINECONTROL) | DLAB);

m_io.outb(DIVISORLOW, (11500 / BAUDRATE) & 0xff);

m_io.outb(DIVISORHIGH, (11500 / BAUDRATE) >> 8);

m_io.outb(LINECONTROL, m_io.inb(LINECONTROL) & ~DLAB);

}

void IntelSerial::write(const char *str)

{

/* Write as much bytes as possible. */

while (m_io.inb(LINESTATUS) & TXREADY && *str)

{

m_io.outb(TRANSMIT, *str++);

}

}