1 | /*
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2 | * TOPPERS/ASP Kernel
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3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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4 | * Advanced Standard Profile Kernel
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5 | *
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6 | * Copyright (C) 2006-2016 by Embedded and Real-Time Systems Laboratory
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7 | * Graduate School of Information Science, Nagoya Univ., JAPAN
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8 | *
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9 | * ä¸è¨èä½æ¨©è
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10 | ã¯ï¼ä»¥ä¸ã®(1)ï½(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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11 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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12 | * å¤ã»åé
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13 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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14 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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15 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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16 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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17 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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18 | * ç¨ã§ããå½¢ã§åé
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19 | å¸ããå ´åã«ã¯ï¼åé
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20 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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21 | * è
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22 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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23 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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24 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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25 | * ç¨ã§ããªãå½¢ã§åé
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26 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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27 | * ã¨ï¼
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28 | * (a) åé
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29 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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30 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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31 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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32 | * (b) åé
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33 | å¸ã®å½¢æ
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34 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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35 | * å ±åãããã¨ï¼
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36 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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37 | * 害ãããï¼ä¸è¨èä½æ¨©è
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38 | ããã³TOPPERSããã¸ã§ã¯ããå
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39 | 責ãããã¨ï¼
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40 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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41 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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42 | ããã³TOPPERSããã¸ã§ã¯ãã
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43 | * å
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44 | 責ãããã¨ï¼
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45 | *
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46 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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47 | ã
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48 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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49 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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50 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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51 | * ã®è²¬ä»»ãè² ããªãï¼
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52 | *
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53 | * $Id: tSCIF.c 270 2017-02-09 04:03:47Z coas-nagasima $
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54 | */
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55 |
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56 | /*
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57 | * FIFOå
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58 | èµã·ãªã¢ã«ã³ãã¥ãã±ã¼ã·ã§ã³ã¤ã³ã¿ãã§ã¼ã¹ç¨ ç°¡æSIOãã©ã¤ã
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59 | */
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60 |
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61 | #include <sil.h>
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62 | #include "tSCIF_tecsgen.h"
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63 | #include "scif.h"
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64 |
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65 | /*
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66 | * ããªããã£ããªéä¿¡ï¼åä¿¡é¢æ°
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67 | */
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68 |
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69 | /*
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70 | * åä¿¡ãããã¡ã«æåããããï¼
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71 | */
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72 | Inline bool_t
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73 | scif_getready(CELLCB *p_cellcb)
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74 | {
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75 | uint16_t fsr;
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76 | uint16_t lsr;
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77 |
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78 | fsr = sil_reh_mem(SCIF_SCFSR(ATTR_baseAddress));
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79 | lsr = sil_reh_mem(SCIF_SCLSR(ATTR_baseAddress));
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80 | if ((fsr & (SCIF_SCFSR_ER|SCIF_SCFSR_BRK)) != 0U) {
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81 | fsr &= ~(SCIF_SCFSR_ER|SCIF_SCFSR_BRK);
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82 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress), fsr);
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83 | }
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84 | if ((lsr & SCIF_SCLSR_ORER) != 0U) {
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85 | lsr &= ~(SCIF_SCLSR_ORER);
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86 | sil_wrh_mem(SCIF_SCLSR(ATTR_baseAddress), lsr);
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87 | }
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88 | return((fsr & SCIF_SCFSR_RDF) != 0U);
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89 | }
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90 |
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91 | /*
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92 | * éä¿¡ãããã¡ã«ç©ºãããããï¼
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93 | */
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94 | Inline bool_t
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95 | scif_putready(CELLCB *p_cellcb)
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96 | {
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97 | uint16_t fsr;
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98 |
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99 | fsr = sil_reh_mem(SCIF_SCFSR(ATTR_baseAddress));
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100 | return((fsr & SCIF_SCFSR_TDFE) != 0U);
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101 | }
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102 |
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103 | /*
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104 | * åä¿¡ããæåã®ååºã
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105 | */
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106 | Inline bool_t
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107 | scif_getchar(CELLCB *p_cellcb, char *p_c)
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108 | {
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109 | uint16_t fsr;
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110 | uint16_t lsr;
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111 |
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112 | fsr = sil_reh_mem(SCIF_SCFSR(ATTR_baseAddress));
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113 | lsr = sil_reh_mem(SCIF_SCLSR(ATTR_baseAddress));
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114 | if ((fsr & (SCIF_SCFSR_ER|SCIF_SCFSR_BRK)) != 0U) {
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115 | fsr &= ~(SCIF_SCFSR_ER|SCIF_SCFSR_BRK);
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116 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress), fsr);
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117 | }
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118 | if ((lsr & SCIF_SCLSR_ORER) != 0U) {
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119 | lsr &= ~(SCIF_SCLSR_ORER);
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120 | sil_wrh_mem(SCIF_SCLSR(ATTR_baseAddress), lsr);
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121 | }
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122 | if ((fsr & SCIF_SCFSR_RDF) != 0U) {
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123 | *p_c = (char) sil_reb_mem(SCIF_SCFRDR(ATTR_baseAddress));
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124 | fsr &= ~(SCIF_SCFSR_RDF);
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125 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress), fsr);
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126 | return(true);
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127 | }
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128 | return(false);
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129 | }
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130 |
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131 | /*
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132 | * éä¿¡ããæåã®æ¸è¾¼ã¿
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133 | */
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134 | Inline void
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135 | scif_putchar(CELLCB *p_cellcb, char c)
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136 | {
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137 | sil_wrb_mem(SCIF_SCFTDR(ATTR_baseAddress), c);
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138 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress),
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139 | (uint16_t) ~(SCIF_SCFSR_TEND|SCIF_SCFSR_TDFE));
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140 | }
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141 |
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142 | /*
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143 | * ã·ãªã¢ã«I/Oãã¼ãã®ãªã¼ãã³
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144 | */
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145 | void
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146 | eSIOPort_open(CELLIDX idx)
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147 | {
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148 | CELLCB *p_cellcb = GET_CELLCB(idx);
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149 | uint_t brr;
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150 |
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151 | if (VAR_initialized) {
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152 | /*
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153 | * æ¢ã«åæåãã¦ããå ´åã¯ãäºéã«åæåããªãï¼
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154 | */
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155 | return;
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156 | }
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157 |
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158 | brr = SCIF_CLK / (32 * ATTR_baudRate) - 1;
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159 | assert(brr <= 255);
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160 |
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161 | sil_wrh_mem(SCIF_SCSCR(ATTR_baseAddress), 0U);
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162 | sil_wrh_mem(SCIF_SCFCR(ATTR_baseAddress),
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163 | SCIF_SCFCR_TFRST|SCIF_SCFCR_RFRST);
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164 | (void) sil_reh_mem(SCIF_SCFSR(ATTR_baseAddress));
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165 | (void) sil_reh_mem(SCIF_SCLSR(ATTR_baseAddress));
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166 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress), 0U);
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167 | sil_wrh_mem(SCIF_SCLSR(ATTR_baseAddress), 0U);
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168 | sil_wrh_mem(SCIF_SCSCR(ATTR_baseAddress), SCIF_SCSCR_INTCLK);
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169 | sil_wrh_mem(SCIF_SCSMR(ATTR_baseAddress), SCIF_SCSMR_CKS1);
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170 | sil_wrh_mem(SCIF_SCEMR(ATTR_baseAddress), 0U);
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171 | sil_wrb_mem(SCIF_SCBRR(ATTR_baseAddress), (uint8_t) brr);
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172 | sil_wrh_mem(SCIF_SCFCR(ATTR_baseAddress),
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173 | SCIF_SCFCR_RSTRG_15|SCIF_SCFCR_RTRG_1|SCIF_SCFCR_TTRG_8);
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174 | sil_wrh_mem(SCIF_SCSCR(ATTR_baseAddress),
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175 | SCIF_SCSCR_TE|SCIF_SCSCR_RE|SCIF_SCSCR_INTCLK);
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176 |
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177 | while ((sil_reh_mem(SCIF_SCFSR(ATTR_baseAddress)) & SCIF_SCFSR_RDF) != 0U) {
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178 | (void) sil_reb_mem(SCIF_SCFRDR(ATTR_baseAddress));
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179 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress), (uint16_t) ~(SCIF_SCFSR_RDF));
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180 | }
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181 | sil_wrh_mem(SCIF_SCFSR(ATTR_baseAddress), 0U);
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182 |
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183 | VAR_initialized = true;
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184 | }
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185 |
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186 | /*
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187 | * ã·ãªã¢ã«I/Oãã¼ãã®ã¯ãã¼ãº
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188 | */
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189 | void
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190 | eSIOPort_close(CELLIDX idx)
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191 | {
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192 | CELLCB *p_cellcb = GET_CELLCB(idx);
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193 |
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194 | sil_wrh_mem(SCIF_SCSCR(ATTR_baseAddress), 0U);
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195 | }
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196 |
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197 | /*
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198 | * ã·ãªã¢ã«I/Oãã¼ãã¸ã®æåéä¿¡
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199 | */
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200 | bool_t
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201 | eSIOPort_putChar(CELLIDX idx, char c)
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202 | {
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203 | CELLCB *p_cellcb = GET_CELLCB(idx);
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204 |
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205 | if (scif_putready(p_cellcb)){
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206 | scif_putchar(p_cellcb, c);
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207 | return(true);
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208 | }
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209 | return(false);
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210 | }
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211 |
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212 | /*
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213 | * ã·ãªã¢ã«I/Oãã¼ãããã®æååä¿¡
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214 | */
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215 | int_t
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216 | eSIOPort_getChar(CELLIDX idx)
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217 | {
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218 | CELLCB *p_cellcb = GET_CELLCB(idx);
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219 | char c;
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220 |
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221 | if (scif_getready(p_cellcb)) {
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222 | if (scif_getchar(p_cellcb, &c)) {
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223 | return((int_t) c);
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224 | }
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225 | }
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226 | return(-1);
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227 | }
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228 |
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229 | /*
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230 | * ã·ãªã¢ã«I/Oãã¼ãããã®ã³ã¼ã«ããã¯ã®è¨±å¯
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231 | */
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232 | void
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233 | eSIOPort_enableCBR(CELLIDX idx, uint_t cbrtn)
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234 | {
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235 | CELLCB *p_cellcb = GET_CELLCB(idx);
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236 | uint16_t scr;
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237 |
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238 | scr = sil_reh_mem(SCIF_SCSCR(ATTR_baseAddress));
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239 | switch (cbrtn) {
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240 | case SIOSendReady:
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241 | scr |= SCIF_SCSCR_TIE;
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242 | break;
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243 | case SIOReceiveReady:
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244 | scr |= SCIF_SCSCR_RIE;
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245 | break;
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246 | }
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247 | sil_wrh_mem(SCIF_SCSCR(ATTR_baseAddress), scr);
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248 | }
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249 |
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250 | /*
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251 | * ã·ãªã¢ã«I/Oãã¼ãããã®ã³ã¼ã«ããã¯ã®ç¦æ¢
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252 | */
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253 | void
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254 | eSIOPort_disableCBR(CELLIDX idx, uint_t cbrtn)
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255 | {
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256 | CELLCB *p_cellcb = GET_CELLCB(idx);
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257 | uint16_t scr;
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258 |
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259 | scr = sil_reh_mem(SCIF_SCSCR(ATTR_baseAddress));
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260 | switch (cbrtn) {
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261 | case SIOSendReady:
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262 | scr &= ~(SCIF_SCSCR_TIE);
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263 | break;
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264 | case SIOReceiveReady:
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265 | scr &= ~(SCIF_SCSCR_RIE);
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266 | break;
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267 | }
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268 | sil_wrh_mem(SCIF_SCSCR(ATTR_baseAddress), scr);
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269 | }
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270 |
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271 | /*
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272 | * ã·ãªã¢ã«I/Oãã¼ãã«å¯¾ããåä¿¡å²è¾¼ã¿å¦ç
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273 | */
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274 | void
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275 | eiRxISR_main(CELLIDX idx)
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276 | {
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277 | CELLCB *p_cellcb = GET_CELLCB(idx);
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278 |
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279 | if (scif_getready(p_cellcb)) {
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280 | /*
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281 | * åä¿¡éç¥ã³ã¼ã«ããã¯ã«ã¼ãã³ãå¼ã³åºãï¼
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282 | */
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283 | ciSIOCBR_readyReceive();
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284 | }
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285 | }
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286 |
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287 | /*
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288 | * ã·ãªã¢ã«I/Oãã¼ãã«å¯¾ããéä¿¡å²è¾¼ã¿å¦ç
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289 | */
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290 | void
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291 | eiTxISR_main(CELLIDX idx)
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292 | {
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293 | CELLCB *p_cellcb = GET_CELLCB(idx);
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294 |
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295 | if (scif_putready(p_cellcb)) {
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296 | /*
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297 | * éä¿¡å¯è½ã³ã¼ã«ããã¯ã«ã¼ãã³ãå¼ã³åºãï¼
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298 | */
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299 | ciSIOCBR_readySend();
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300 | }
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301 | }
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