forked from Imagelibrary/rtems
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/**
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* @file
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* @ingroup RTEMSBSPsSPARCLEON2
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* @brief TTY driver for the serial ports on the LEON
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*/
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/*
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* This file contains the TTY driver for the serial ports on the LEON.
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*
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* This driver uses the termios pseudo driver.
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*
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* COPYRIGHT (c) 1989-1999.
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* On-Line Applications Research Corporation (OAR).
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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 <bsp.h>
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#include <rtems/bspIo.h>
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void console_outbyte_polled( int port, unsigned char ch )
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{
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if ( port == 0 ) {
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while ( (LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_THE) == 0 );
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LEON_REG.UART_Channel_1 = (unsigned int) ch;
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return;
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}
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while ( (LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_THE) == 0 );
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LEON_REG.UART_Channel_2 = (unsigned int) ch;
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}
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int console_inbyte_nonblocking( int port )
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{
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if ( port == 0 ) {
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if (LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_ERR) {
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LEON_REG.UART_Status_1 = ~LEON_REG_UART_STATUS_ERR;
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}
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if ((LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_DR) == 0)
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return -1;
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return (int) LEON_REG.UART_Channel_1;
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}
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if (LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_ERR) {
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LEON_REG.UART_Status_2 = ~LEON_REG_UART_STATUS_ERR;
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}
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if ((LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_DR) == 0)
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return -1;
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return (int) LEON_REG.UART_Channel_2;
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}
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static void bsp_out_char( char c )
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{
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console_outbyte_polled( 0, c );
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}
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BSP_output_char_function_type BSP_output_char = bsp_out_char;
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static int bsp_in_char( void )
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{
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return console_inbyte_nonblocking( 0 );
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}
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BSP_polling_getchar_function_type BSP_poll_char = bsp_in_char;
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