[7cde240] | 1 | /* |
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| 2 | * This file contains the hardware specific portions of the TTY driver |
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| 3 | * for the serial ports on the csb350. |
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| 4 | * |
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| 5 | * Logic based on the jmr3904-io.c file in newlib 1.8.2 |
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| 6 | * |
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| 7 | * COPYRIGHT (c) 1989-2000. |
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| 8 | * On-Line Applications Research Corporation (OAR). |
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| 9 | * |
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| 10 | * The license and distribution terms for this file may be |
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| 11 | * found in the file LICENSE in this distribution or at |
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[c499856] | 12 | * http://www.rtems.org/license/LICENSE. |
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[7cde240] | 13 | */ |
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| 14 | |
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| 15 | #include <bsp.h> |
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| 16 | #include <rtems/libio.h> |
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| 17 | #include <libcpu/au1x00.h> |
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| 18 | |
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| 19 | /* |
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| 20 | * console_initialize_hardware |
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| 21 | * |
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| 22 | * This routine initializes the console hardware. |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | void console_initialize_hardware(void) |
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| 27 | { |
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| 28 | uart0->fifoctrl = 0xf1; /* enable fifo, max sizes */ |
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| 29 | au_sync(); |
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| 30 | } |
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| 31 | |
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| 32 | |
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| 33 | /* |
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| 34 | * console_outbyte_polled |
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| 35 | * |
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| 36 | * This routine transmits a character using polling. |
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| 37 | */ |
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| 38 | |
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| 39 | void console_outbyte_polled( |
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| 40 | int port, |
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| 41 | char ch |
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| 42 | ) |
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| 43 | { |
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| 44 | /* wait for the fifo to make room */ |
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| 45 | while ((uart0->linestat & 0x20) == 0) { |
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| 46 | continue; |
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| 47 | } |
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[efdfd48] | 48 | |
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[7cde240] | 49 | uart0->txdata = ch; |
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| 50 | au_sync(); |
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| 51 | } |
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| 52 | |
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| 53 | /* |
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[efdfd48] | 54 | * console_inbyte_nonblocking |
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[7cde240] | 55 | * |
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| 56 | * This routine polls for a character. |
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| 57 | */ |
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| 58 | |
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| 59 | int console_inbyte_nonblocking( |
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| 60 | int port |
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| 61 | ) |
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| 62 | { |
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| 63 | unsigned char c; |
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| 64 | |
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| 65 | if (uart0->linestat & 1) { |
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| 66 | c = (char)uart0->rxdata; |
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| 67 | return c; |
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| 68 | } else { |
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| 69 | return -1; |
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| 70 | } |
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| 71 | } |
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| 72 | |
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| 73 | #include <rtems/bspIo.h> |
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| 74 | |
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[efdfd48] | 75 | void csb250_output_char(char c) |
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| 76 | { |
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| 77 | console_outbyte_polled( 0, c ); |
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[7cde240] | 78 | if (c == '\n') { |
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[efdfd48] | 79 | console_outbyte_polled( 0, '\r' ); |
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[7cde240] | 80 | } |
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| 81 | } |
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| 82 | |
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[34ea1e6] | 83 | int csb250_get_char(void) |
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| 84 | { |
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| 85 | return console_inbyte_nonblocking(0); |
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| 86 | } |
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| 87 | |
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[7cde240] | 88 | BSP_output_char_function_type BSP_output_char = csb250_output_char; |
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[34ea1e6] | 89 | BSP_polling_getchar_function_type BSP_poll_char = csb250_get_char; |
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[7cde240] | 90 | |
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