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   1 /*\r
   2  * @brief Pipe data stream transmission and reception management for the LPC microcontrollers\r
   3  *\r
   4  * @note\r
   5  * Copyright(C) NXP Semiconductors, 2012\r
   6  * All rights reserved.\r
   7  *\r
   8  * @par\r
   9  * Software that is described herein is for illustrative purposes only\r
  10  * which provides customers with programming information regarding the\r
  11  * LPC products.  This software is supplied "AS IS" without any warranties of\r
  12  * any kind, and NXP Semiconductors and its licensor disclaim any and\r
  13  * all warranties, express or implied, including all implied warranties of\r
  14  * merchantability, fitness for a particular purpose and non-infringement of\r
  15  * intellectual property rights.  NXP Semiconductors assumes no responsibility\r
  16  * or liability for the use of the software, conveys no license or rights under any\r
  17  * patent, copyright, mask work right, or any other intellectual property rights in\r
  18  * or to any products. NXP Semiconductors reserves the right to make changes\r
  19  * in the software without notification. NXP Semiconductors also makes no\r
  20  * representation or warranty that such application will be suitable for the\r
  21  * specified use without further testing or modification.\r
  22  *\r
  23  * @par\r
  24  * Permission to use, copy, modify, and distribute this software and its\r
  25  * documentation is hereby granted, under NXP Semiconductors' and its\r
  26  * licensor's relevant copyrights in the software, without fee, provided that it\r
  27  * is used in conjunction with NXP Semiconductors microcontrollers.  This\r
  28  * copyright, permission, and disclaimer notice must appear in all copies of\r
  29  * this code.\r
  30  */\r
  31 \r
  32 #define  __INCLUDE_FROM_USB_DRIVER\r
  33 #include "USBMode.h"\r
  34 \r
  35 #if defined(USB_CAN_BE_HOST)\r
  36 \r
  37 #include "PipeStream.h"\r
  38 \r
  39 uint8_t Pipe_Discard_Stream(const uint8_t corenum,\r
  40                                                         uint16_t Length,\r
  41                                                         uint16_t *const BytesProcessed)\r
  42 {\r
  43         uint8_t  ErrorCode;\r
  44         uint16_t BytesInTransfer = 0;\r
  45 \r
  46         //      Pipe_SetPipeToken(PIPE_TOKEN_IN);\r
  47         ErrorCode = Pipe_WaitUntilReady(corenum);\r
  48         if (ErrorCode) {\r
  49                 return ErrorCode;\r
  50         }\r
  51 \r
  52         if (BytesProcessed != NULL) {\r
  53                 Length -= *BytesProcessed;\r
  54         }\r
  55 \r
  56         while (Length) {\r
  57                 if (!(Pipe_IsReadWriteAllowed(corenum))) {\r
  58                         Pipe_ClearIN(corenum);\r
  59 \r
  60                         if (BytesProcessed != NULL) {\r
  61                                 *BytesProcessed += BytesInTransfer;\r
  62                                 return PIPE_RWSTREAM_IncompleteTransfer;\r
  63                         }\r
  64                         ErrorCode = Pipe_WaitUntilReady(corenum);\r
  65                         if (ErrorCode) {\r
  66                                 return ErrorCode;\r
  67                         }\r
  68                 }\r
  69                 else {\r
  70                         Pipe_Discard_8();\r
  71 \r
  72                         Length--;\r
  73                         BytesInTransfer++;\r
  74                 }\r
  75         }\r
  76 \r
  77         return PIPE_RWSTREAM_NoError;\r
  78 }\r
  79 \r
  80 uint8_t Pipe_Null_Stream(const uint8_t corenum,\r
  81                                                  uint16_t Length,\r
  82                                                  uint16_t *const BytesProcessed)\r
  83 {\r
  84         if (BytesProcessed != NULL) {\r
  85                 Length -= *BytesProcessed;\r
  86         }\r
  87 \r
  88         while (Length) {\r
  89                 Pipe_Write_8(corenum, 0);\r
  90                 Length--;\r
  91         }\r
  92 \r
  93         return PIPE_RWSTREAM_NoError;\r
  94 }\r
  95 \r
  96 uint8_t Pipe_Write_Stream_LE(const uint8_t corenum,\r
  97                                                          const void *const Buffer,\r
  98                                                          uint16_t Length,\r
  99                                                          uint16_t *const BytesProcessed)\r
 100 {\r
 101         uint8_t *DataStream = (uint8_t *) Buffer;\r
 102         if (BytesProcessed != NULL) {\r
 103                 Length -= *BytesProcessed;\r
 104                 DataStream += *BytesProcessed;\r
 105         }\r
 106 \r
 107         while (Length) {\r
 108                 Pipe_Write_8(corenum, *DataStream);\r
 109                 DataStream++;\r
 110                 Length--;\r
 111         }\r
 112 \r
 113         return PIPE_RWSTREAM_NoError;\r
 114 }\r
 115 \r
 116 uint8_t Pipe_Read_Stream_LE(const uint8_t corenum,\r
 117                                                         void *const Buffer,\r
 118                                                         uint16_t Length,\r
 119                                                         uint16_t *const BytesProcessed) /* TODO Blocking due to Pipe_WaitUntilReady */\r
 120 {\r
 121         uint8_t *DataStream = (uint8_t *) Buffer;\r
 122         uint8_t ErrorCode;\r
 123 \r
 124         ErrorCode = Pipe_WaitUntilReady(corenum);\r
 125         if (ErrorCode) {\r
 126                 return ErrorCode;\r
 127         }\r
 128 \r
 129         if (BytesProcessed != NULL) {\r
 130                 Length -= *BytesProcessed;\r
 131                 DataStream += *BytesProcessed;\r
 132         }\r
 133 \r
 134         while (Length) {\r
 135                 if (Pipe_IsReadWriteAllowed(corenum)) {\r
 136                         *DataStream = Pipe_Read_8(corenum);\r
 137                         DataStream++;\r
 138                         Length--;\r
 139                 }\r
 140                 else {\r
 141                         Pipe_ClearIN(corenum);\r
 142                         HcdDataTransfer(PipeInfo[corenum][pipeselected[corenum]].PipeHandle,\r
 143                                                         PipeInfo[corenum][pipeselected[corenum]].Buffer,\r
 144                                                         MIN(Length, PipeInfo[corenum][pipeselected[corenum]].BufferSize),\r
 145                                                         &PipeInfo[corenum][pipeselected[corenum]].ByteTransfered);\r
 146                         ErrorCode = Pipe_WaitUntilReady(corenum);\r
 147                         if (ErrorCode) {\r
 148                                 return ErrorCode;\r
 149                         }\r
 150                 }\r
 151         }\r
 152 \r
 153         return PIPE_RWSTREAM_NoError;\r
 154 }\r
 155 \r
 156 uint8_t Pipe_Write_Stream_BE(const void *const Buffer,\r
 157                                                          uint16_t Length,\r
 158                                                          uint16_t *const BytesProcessed)\r
 159 {\r
 160         return PIPE_RWSTREAM_NoError;\r
 161 }\r
 162 \r
 163 uint8_t Pipe_Read_Stream_BE(void *const Buffer,\r
 164                                                         uint16_t Length,\r
 165                                                         uint16_t *const BytesProcessed)\r
 166 {\r
 167         return PIPE_RWSTREAM_NoError;\r
 168 }\r
 169 \r
 170 uint8_t Pipe_Write_PStream_LE(const void *const Buffer,\r
 171                                                           uint16_t Length,\r
 172                                                           uint16_t *const BytesProcessed)\r
 173 {\r
 174         return PIPE_RWSTREAM_NoError;\r
 175 }\r
 176 \r
 177 uint8_t Pipe_Write_PStream_BE(const void *const Buffer,\r
 178                                                           uint16_t Length,\r
 179                                                           uint16_t *const BytesProcessed)\r
 180 {\r
 181         return PIPE_RWSTREAM_NoError;\r
 182 }\r
 183 \r
 184 uint8_t Pipe_Write_EStream_LE(const void *const Buffer,\r
 185                                                           uint16_t Length,\r
 186                                                           uint16_t *const BytesProcessed)\r
 187 {\r
 188         return PIPE_RWSTREAM_NoError;\r
 189 }\r
 190 \r
 191 uint8_t Pipe_Write_EStream_BE(const void *const Buffer,\r
 192                                                           uint16_t Length,\r
 193                                                           uint16_t *const BytesProcessed)\r
 194 {\r
 195         return PIPE_RWSTREAM_NoError;\r
 196 }\r
 197 \r
 198 uint8_t Pipe_Read_EStream_LE(void *const Buffer,\r
 199                                                          uint16_t Length,\r
 200                                                          uint16_t *const BytesProcessed)\r
 201 {\r
 202         return PIPE_RWSTREAM_NoError;\r
 203 }\r
 204 \r
 205 uint8_t Pipe_Read_EStream_BE(void *const Buffer,\r
 206                                                          uint16_t Length,\r
 207                                                          uint16_t *const BytesProcessed)\r
 208 {\r
 209         return PIPE_RWSTREAM_NoError;\r
 210 }\r
 211 \r
 212 uint8_t Pipe_Streaming(uint8_t corenum, uint8_t* const buffer, uint32_t const transferlength, uint16_t const packetsize)\r
 213 {\r
 214         uint32_t pipehdl = PipeInfo[corenum][pipeselected[corenum]].PipeHandle;\r
 215         if (HCD_STATUS_OK == HcdGetPipeStatus(pipehdl))\r
 216         {\r
 217                 HcdSetStreamPacketSize(pipehdl,packetsize);\r
 218                 HcdDataTransfer(pipehdl,buffer,transferlength,&PipeInfo[corenum][pipeselected[corenum]].ByteTransfered);\r
 219                 return PIPE_RWSTREAM_NoError;\r
 220         }\r
 221         else return PIPE_RWSTREAM_IncompleteTransfer;\r
 222 }\r
 223 \r
 224 #endif\r