forked from Imagelibrary/rtems
86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
/*
|
|
* This file contains the hardware specific portions of the TTY driver
|
|
* for the serial ports on the csb350.
|
|
*/
|
|
|
|
/*
|
|
* COPYRIGHT (c) 1989-2000.
|
|
* On-Line Applications Research Corporation (OAR).
|
|
*
|
|
* 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 <bsp.h>
|
|
#include <bsp/console-polled.h>
|
|
#include <rtems/libio.h>
|
|
#include <libcpu/au1x00.h>
|
|
|
|
/*
|
|
* console_initialize_hardware
|
|
*
|
|
* This routine initializes the console hardware.
|
|
*
|
|
*/
|
|
void console_initialize_hardware(void)
|
|
{
|
|
uart0->fifoctrl = 0xf1; /* enable fifo, max sizes */
|
|
au_sync();
|
|
}
|
|
|
|
|
|
/*
|
|
* console_outbyte_polled
|
|
*
|
|
* This routine transmits a character using polling.
|
|
*/
|
|
void console_outbyte_polled(
|
|
int port,
|
|
char ch
|
|
)
|
|
{
|
|
/* wait for the fifo to make room */
|
|
while ((uart0->linestat & 0x20) == 0) {
|
|
continue;
|
|
}
|
|
|
|
uart0->txdata = ch;
|
|
au_sync();
|
|
}
|
|
/*
|
|
* console_inbyte_nonblocking
|
|
*
|
|
* This routine polls for a character.
|
|
*/
|
|
|
|
int console_inbyte_nonblocking(
|
|
int port
|
|
)
|
|
{
|
|
unsigned char c;
|
|
|
|
if (uart0->linestat & 1) {
|
|
c = (char)uart0->rxdata;
|
|
return c;
|
|
} else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#include <rtems/bspIo.h>
|
|
|
|
static void csb250_output_char(char c)
|
|
{
|
|
console_outbyte_polled( 0, c );
|
|
}
|
|
|
|
static int csb250_get_char(void)
|
|
{
|
|
return console_inbyte_nonblocking(0);
|
|
}
|
|
|
|
BSP_output_char_function_type BSP_output_char = csb250_output_char;
|
|
BSP_polling_getchar_function_type BSP_poll_char = csb250_get_char;
|
|
|