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/*
* This file contains the hardware specific portions of the TTY driver
* for the serial ports on the mcf5272
*
* 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.com/license/LICENSE.
*
* $Id$
*/
#include <bsp.h>
#include <rtems/libio.h>
#include <mcf5272/mcf5272.h>
volatile int g_cnt = 0;
/*
* console_initialize_hardware
*
* This routine initializes the console hardware.
*
*/
void console_initialize_hardware(void)
{
}
/*
* console_outbyte_polled
*
* This routine transmits a character using polling.
*/
void console_outbyte_polled(
int port,
char ch
)
{
uart_regs_t *uart;
int i;
if (port == 0) {
uart = g_uart0_regs;
} else {
uart = g_uart1_regs;
}
/* wait for the fifo to make room */
/* while ((uart->usr & MCF5272_USR_TXRDY) == 0) { */
while ((uart->ucsr & MCF5272_USR_TXRDY) == 0) {
continue;
}
uart->udata = ch;
for (i = 0; i < 1000; i++) g_cnt++;
}
/*
* console_inbyte_nonblocking
*
* This routine polls for a character.
*/
int console_inbyte_nonblocking(
int port
)
{
uart_regs_t *uart;
unsigned char c;
if (port == 0) {
uart = g_uart0_regs;
} else {
uart = g_uart1_regs;
}
/* if (uart->usr & MCF5272_USR_RXRDY) { */
if (uart->ucsr & MCF5272_USR_RXRDY) {
c = (char)uart->udata;
return c;
} else {
return -1;
}
}
#include <rtems/bspIo.h>
void mcf5272_output_char(char c) { console_outbyte_polled( 0, c ); }
BSP_output_char_function_type BSP_output_char = mcf5272_output_char;
BSP_polling_getchar_function_type BSP_poll_char = NULL;
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