FreeCalypso > hg > fc-tourmaline
annotate src/g23m-aci/gdd_dio/gdd_dio_queue.h @ 52:6d77f6e1670a
bug in the last commit
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 19 Oct 2020 05:27:40 +0000 |
parents | fa8dc04885d8 |
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rev | line source |
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1
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1 /* |
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2 +----------------------------------------------------------------------------- |
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3 | File : gdd_dio_queue.h |
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4 +----------------------------------------------------------------------------- |
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5 | Copyright 2002 Texas Instruments Berlin, AG |
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6 | All rights reserved. |
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7 | |
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8 | This file is confidential and a trade secret of Texas |
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9 | Instruments Berlin, AG |
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10 | The receipt of or possession of this file does not convey |
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11 | any rights to reproduce or disclose its contents or to |
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12 | manufacture, use, or sell anything it may describe, in |
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13 | whole, or in part, without the specific written consent of |
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14 | Texas Instruments Berlin, AG. |
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15 +----------------------------------------------------------------------------- |
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16 | Purpose : Definitions for gdd_dio_queue.c |
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17 +----------------------------------------------------------------------------- |
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18 */ |
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19 |
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20 #ifndef GDD_DIO_QUEUE_H |
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21 #define GDD_DIO_QUEUE_H |
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22 |
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23 /*==== INCLUDES =============================================================*/ |
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24 |
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25 #include "gdd.h" |
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26 |
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27 #include "p_dio.h" |
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28 |
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29 |
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30 /*==== DEFINITIONS ==========================================================*/ |
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31 |
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32 /** |
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33 * Maximum numbers of simultaneous DIO buffers provided by PSI. |
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34 * Might be increased at one stage in the future. |
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35 */ |
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36 #define GDD_MAX_DIO_BUF 2 |
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37 |
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38 /** |
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39 * Definition of buffer queue |
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40 */ |
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41 typedef struct |
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42 { |
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43 T_dio_buffer * elems[GDD_MAX_DIO_BUF]; |
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44 U16 next_in; |
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45 U16 next_out; |
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46 } T_GDD_BUF_QUEUE; |
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47 |
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48 |
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49 /*==== EXPORTS ===============================================================*/ |
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50 |
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51 /* |
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52 +------------------------------------------------------------------------------ |
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53 | Function : gdd_dio_queue_clear |
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54 +------------------------------------------------------------------------------ |
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55 | Description : Clear a queue |
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56 | |
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57 | Parameters : queue - pointer to queue to be cleared |
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58 | |
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59 +------------------------------------------------------------------------------ |
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60 */ |
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61 EXTERN void gdd_dio_queue_clear(T_GDD_BUF_QUEUE *queue); |
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62 |
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63 |
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64 /* |
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65 +------------------------------------------------------------------------------ |
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66 | Function : gdd_dio_queue_is_empty |
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67 +------------------------------------------------------------------------------ |
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68 | Description : Check if a queue is empty |
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69 | |
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70 | Parameters : queue - pointer to queue to be checked |
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71 | |
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72 | Return : TRUE if queue is empty, FALSE otherwise |
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73 +------------------------------------------------------------------------------ |
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74 */ |
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75 EXTERN BOOL gdd_dio_queue_is_empty(const T_GDD_BUF_QUEUE *queue); |
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76 |
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77 |
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78 /* |
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79 +------------------------------------------------------------------------------ |
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80 | Function : gdd_dio_queue_is_full |
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81 +------------------------------------------------------------------------------ |
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82 | Description : Check if a queue is full |
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83 | |
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84 | Parameters : queue - pointer to queue to be checked |
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85 | |
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86 | Return : TRUE if queue is full, FALSE otherwise |
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87 +------------------------------------------------------------------------------ |
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88 */ |
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89 EXTERN BOOL gdd_dio_queue_is_full(const T_GDD_BUF_QUEUE *queue); |
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90 |
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91 |
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92 /* |
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93 +------------------------------------------------------------------------------ |
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94 | Function : gdd_dio_enqueue |
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95 +------------------------------------------------------------------------------ |
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96 | Description : Enqueue an item into the queue |
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97 | |
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98 | Parameters : elem - item to be enqueued |
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99 | queue - pointer to queue to be modified |
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100 | pos - to return the position of the enqueued item |
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101 | |
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102 | Return : TRUE if item is enqueued, FALSE if the queue is already full |
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103 +------------------------------------------------------------------------------ |
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104 */ |
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105 EXTERN BOOL gdd_dio_enqueue(T_dio_buffer *elem, T_GDD_BUF_QUEUE *queue, /*out*/U16 *pos); |
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106 |
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107 |
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108 /* |
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109 +------------------------------------------------------------------------------ |
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110 | Function : gdd_dio_dequeue |
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111 +------------------------------------------------------------------------------ |
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112 | Description : Dequeue an item into the queue |
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113 | |
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114 | Parameters : queue - pointer to queue to be modified |
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115 | elem - to return the dequeued item |
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116 | |
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117 | Return : TRUE if item is dequeued, FALSE if the queue is empty |
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118 +------------------------------------------------------------------------------ |
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119 */ |
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120 EXTERN BOOL gdd_dio_dequeue(T_GDD_BUF_QUEUE *queue, /*out*/T_dio_buffer **elem); |
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121 |
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122 /* |
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123 +------------------------------------------------------------------------------ |
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124 | Function : gdd_dio_queue_peek_next_for_dequeue |
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125 +------------------------------------------------------------------------------ |
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126 | Description : Retrieves the element that is next to dequeue without actually |
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127 | dequeuing it. |
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128 | |
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129 | Parameters : queue - pointer to queue |
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130 | pos - position of element |
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131 | elem - to output element value |
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132 | |
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133 | Return : TRUE if item is available, FALSE if the queue is empty |
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134 +------------------------------------------------------------------------------ |
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135 */ |
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136 EXTERN BOOL gdd_dio_queue_peek_next_for_dequeue |
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137 (const T_GDD_BUF_QUEUE *queue, T_dio_buffer **elem); |
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138 |
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139 /* |
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140 +------------------------------------------------------------------------------ |
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141 | Function : gdd_dio_queue_peek |
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142 +------------------------------------------------------------------------------ |
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143 | Description : Retrieve element at specified position |
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144 | |
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145 | Parameters : queue - pointer to queue |
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146 | pos - position of element |
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147 | elem - to output element value |
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148 | |
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149 | Attention : This function does not do bounds checking |
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150 +------------------------------------------------------------------------------ |
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151 */ |
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152 EXTERN void gdd_dio_queue_peek(const T_GDD_BUF_QUEUE *queue, U16 pos, /*out*/T_dio_buffer **elem); |
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153 |
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154 #endif /* !GDD_DIO_QUEUE_H */ |
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155 |