forked from Imagelibrary/rtems
671c31fc5d
The umon support is only used by the csb337 BSP. This patch is a part of the BSP source reorganization. Update #3285.
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/*
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* uMon Support Output Driver
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*
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* COPYRIGHT (c) 1989-2009.
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* On-Line Applications Research Corporation (OAR).
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*
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* Modified by Fernando Nicodemos <fgnicodemos@terra.com.br>
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* from NCB - Sistemas Embarcados Ltda. (Brazil)
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <rtems/umon.h>
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#include <libchip/serial.h>
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#include <libchip/sersupp.h>
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/* static function prototypes */
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static int umoncons_first_open(int major, int minor, void *arg);
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static int umoncons_last_close(int major, int minor, void *arg);
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static int umoncons_read(int minor);
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static ssize_t umoncons_write(int minor, const char *buf, size_t len);
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static void umoncons_init(int minor);
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static void umoncons_write_polled(int minor, char c);
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static int umoncons_set_attributes(int minor, const struct termios *t);
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/* Pointers to functions for handling the UART. */
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const console_fns umoncons_fns =
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{
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libchip_serial_default_probe,
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umoncons_first_open,
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umoncons_last_close,
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umoncons_read,
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umoncons_write,
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umoncons_init,
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umoncons_write_polled, /* not used in this driver */
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umoncons_set_attributes,
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false /* TRUE if interrupt driven, FALSE if not. */
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};
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/*********************************************************************/
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/* Functions called via callbacks (i.e. the ones in uart_fns */
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/*********************************************************************/
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/*
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* This is called the first time each device is opened. Since
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* the driver is polled, we don't have to do anything. If the driver
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* were interrupt driven, we'd enable interrupts here.
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*/
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static int umoncons_first_open(int major, int minor, void *arg)
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{
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return 0;
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}
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/*
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* This is called the last time each device is closed. Since
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* the driver is polled, we don't have to do anything. If the driver
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* were interrupt driven, we'd disable interrupts here.
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*/
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static int umoncons_last_close(int major, int minor, void *arg)
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{
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return 0;
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}
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/*
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* Read one character from UART.
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*
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* return -1 if there's no data, otherwise return
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* the character in lowest 8 bits of returned int.
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*/
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static int umoncons_read(int minor)
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{
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if ( !mon_gotachar() )
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return -1;
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return mon_getchar();
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}
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/*
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* Write buffer to LCD
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*
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* return 1 on success, -1 on error
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*/
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static ssize_t umoncons_write(int minor, const char *buf, size_t len)
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{
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size_t i;
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for ( i=0 ; i<len ; i++ )
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mon_putchar( buf[i] );
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return len;
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}
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/* Set up the uMon driver. */
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static void umoncons_init(int minor)
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{
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rtems_umon_connect();
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}
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/* This is used for putchark support */
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static void umoncons_write_polled(int minor, char c)
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{
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mon_putchar( c );
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}
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/* This is for setting baud rate, bits, etc. */
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static int umoncons_set_attributes(int minor, const struct termios *t)
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{
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return 0;
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}
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/***********************************************************************/
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/*
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* The following functions are not used by TERMIOS, but other RTEMS
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* functions use them instead.
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*/
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/***********************************************************************/
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/*
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* Read from UART. This is used in the exit code, and can't
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* rely on interrupts.
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*/
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int umoncons_poll_read(int minor)
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{
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if (!mon_gotachar())
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return -1;
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return mon_getchar();
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}
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