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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12 | * http://www.rtems.com/license/LICENSE. |
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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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48 | |
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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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54 | * console_inbyte_nonblocking |
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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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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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78 | if (c == '\n') { |
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79 | console_outbyte_polled( 0, '\r' ); |
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80 | } |
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81 | } |
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82 | |
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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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88 | BSP_output_char_function_type BSP_output_char = csb250_output_char; |
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89 | BSP_polling_getchar_function_type BSP_poll_char = csb250_get_char; |
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90 | |
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