/*
* uMon Support Output Driver
*
* COPYRIGHT (c) 1989-2009.
* On-Line Applications Research Corporation (OAR).
*
* Modified by Fernando Nicodemos <fgnicodemos@terra.com.br>
* from NCB - Sistemas Embarcados Ltda. (Brazil)
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems/umon.h>
#include <libchip/serial.h>
#include <libchip/sersupp.h>
/* static function prototypes */
static int umoncons_first_open(int major, int minor, void *arg);
static int umoncons_last_close(int major, int minor, void *arg);
static int umoncons_read(int minor);
static ssize_t umoncons_write(int minor, const char *buf, size_t len);
static void umoncons_init(int minor);
static void umoncons_write_polled(int minor, char c);
static int umoncons_set_attributes(int minor, const struct termios *t);
/* Pointers to functions for handling the UART. */
const console_fns umoncons_fns =
{
libchip_serial_default_probe,
umoncons_first_open,
umoncons_last_close,
umoncons_read,
umoncons_write,
umoncons_init,
umoncons_write_polled, /* not used in this driver */
umoncons_set_attributes,
false /* TRUE if interrupt driven, FALSE if not. */
};
/*********************************************************************/
/* Functions called via callbacks (i.e. the ones in uart_fns */
/*********************************************************************/
/*
* This is called the first time each device is opened. Since
* the driver is polled, we don't have to do anything. If the driver
* were interrupt driven, we'd enable interrupts here.
*/
static int umoncons_first_open(int major, int minor, void *arg)
{
return 0;
}
/*
* This is called the last time each device is closed. Since
* the driver is polled, we don't have to do anything. If the driver
* were interrupt driven, we'd disable interrupts here.
*/
static int umoncons_last_close(int major, int minor, void *arg)
{
return 0;
}
/*
* Read one character from UART.
*
* return -1 if there's no data, otherwise return
* the character in lowest 8 bits of returned int.
*/
static int umoncons_read(int minor)
{
if ( !mon_gotachar() )
return -1;
return mon_getchar();
}
/*
* Write buffer to LCD
*
* return 1 on success, -1 on error
*/
static ssize_t umoncons_write(int minor, const char *buf, size_t len)
{
size_t i;
for ( i=0 ; i<len ; i++ )
mon_putchar( buf[i] );
return len;
}
/* Set up the uMon driver. */
static void umoncons_init(int minor)
{
rtems_umon_connect();
}
/* This is used for putchark support */
static void umoncons_write_polled(int minor, char c)
{
mon_putchar( c );
}
/* This is for setting baud rate, bits, etc. */
static int umoncons_set_attributes(int minor, const struct termios *t)
{
return 0;
}
/***********************************************************************/
/*
* The following functions are not used by TERMIOS, but other RTEMS
* functions use them instead.
*/
/***********************************************************************/
/*
* Read from UART. This is used in the exit code, and can't
* rely on interrupts.
*/
int umoncons_poll_read(int minor)
{
if (!mon_gotachar())
return -1;
return mon_getchar();
}
