Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 NXP Semiconductors |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /*! |
| 18 | * \file phLlcNfc.c |
| 19 | * \brief Common LLC for the upper layer. |
| 20 | * |
| 21 | * Project: NFC-FRI-1.1 |
| 22 | * |
| 23 | * $Date: Wed Apr 28 17:07:03 2010 $ |
| 24 | * $Author: ing02260 $ |
| 25 | * $Revision: 1.59 $ |
| 26 | * $Aliases: NFC_FRI1.1_WK1017_PREP1,NFC_FRI1.1_WK1017_R34_1,NFC_FRI1.1_WK1017_R34_2,NFC_FRI1.1_WK1023_R35_1 $ |
| 27 | * |
| 28 | */ |
| 29 | |
| 30 | /*************************** Includes *******************************/ |
| 31 | #include <phNfcTypes.h> |
| 32 | #include <phNfcStatus.h> |
| 33 | #include <phOsalNfc.h> |
| 34 | #include <phNfcInterface.h> |
| 35 | #include <phLlcNfc_DataTypes.h> |
| 36 | #include <phLlcNfc.h> |
| 37 | #include <phLlcNfc_Frame.h> |
| 38 | #include <phLlcNfc_Interface.h> |
| 39 | #include <phLlcNfc_Timer.h> |
| 40 | |
| 41 | /*********************** End of includes ****************************/ |
| 42 | |
| 43 | /***************************** Macros *******************************/ |
| 44 | |
| 45 | /************************ End of macros *****************************/ |
| 46 | |
| 47 | /***************************** Global variables *******************************/ |
| 48 | |
| 49 | #ifdef LLC_RELEASE_FLAG |
| 50 | uint8_t g_release_flag; |
| 51 | #endif /* #ifdef LLC_RELEASE_FLAG */ |
| 52 | |
| 53 | /************************ End of global variables *****************************/ |
| 54 | |
| 55 | |
| 56 | |
| 57 | /*********************** Local functions ****************************/ |
| 58 | /** |
| 59 | * \ingroup grp_hal_nfc_llc |
| 60 | * |
| 61 | * \brief \b Init function |
| 62 | * |
| 63 | * \copydoc page_reg Initialise all variables of the LLC component (Asynchronous function). |
| 64 | * |
| 65 | * \param[in] pContext LLC context provided by the upper layer. The LLC |
| 66 | * context will be given to the upper layer through the |
| 67 | * \ref phLlcNfc_Register function |
| 68 | * \param[in] pLinkInfo Link information of the hardware |
| 69 | * |
| 70 | * \retval NFCSTATUS_PENDING If the command is yet to be processed. |
| 71 | * \retval NFCSTATUS_INVALID_PARAMETER At least one parameter of the function is invalid. |
| 72 | * \retval Other errors Errors related to the lower layers |
| 73 | * |
| 74 | */ |
| 75 | static |
| 76 | NFCSTATUS |
| 77 | phLlcNfc_Init ( |
| 78 | void *pContext, |
| 79 | void *pLinkInfo |
| 80 | ); |
| 81 | |
| 82 | /** |
| 83 | * \ingroup grp_hal_nfc_llc |
| 84 | * |
| 85 | * \brief \b Send function |
| 86 | * |
| 87 | * \copydoc page_reg This asynchronous function gets the information from the upper layer and creates the |
| 88 | * proper LLC packet to send the information it to the hardware. The number of |
| 89 | * bytes written is obtained from the send response callback which has been |
| 90 | * registered in \ref phLlcNfc_Register function |
| 91 | * |
| 92 | * \param[in] pContext LLC context is provided by the upper layer. The LLC |
| 93 | * context earlier was given to the upper layer through the |
| 94 | * \ref phLlcNfc_Register function |
| 95 | * \param[in] pLinkInfo Link information of the hardware. |
| 96 | * \param[in] pLlc_Buf The information given by the upper layer to send it to |
| 97 | * the lower layer |
| 98 | * \param[in] llcBufLength the length of pLlc_Buf, that needs to be sent to the |
| 99 | * lower layer is given by the upper layer |
| 100 | * |
| 101 | * \retval NFCSTATUS_PENDING If the command is yet to be process. |
| 102 | * \retval NFCSTATUS_INVALID_PARAMETER At least one parameter of the function is invalid. |
| 103 | * \retval Other errors Errors related to the lower layers |
| 104 | * |
| 105 | */ |
| 106 | static |
| 107 | NFCSTATUS |
| 108 | phLlcNfc_Send ( |
| 109 | void *pContext, |
| 110 | void *pLinkInfo, |
| 111 | uint8_t *pLlcBuf, |
| 112 | uint16_t llcBufLength |
| 113 | ); |
| 114 | |
| 115 | /** |
| 116 | * \ingroup grp_hal_nfc_llc |
| 117 | * |
| 118 | * \brief \b Receive function |
| 119 | * |
| 120 | * \copydoc page_reg This asynchronous function gets the length and the required buffer from |
| 121 | * the upper layer to receive the information from the the hardware. The |
| 122 | * received data will be given through the receive response callback |
| 123 | * which has been registered in the \b phLlcNfc_Register function |
| 124 | * |
| 125 | * \param[in] pContext LLC context is provided by the upper layer. The LLC |
| 126 | * context earlier was given to the upper layer through the |
| 127 | * \b phLlcNfc_Register function |
| 128 | * \param[in] pLinkInfo Link information of the hardware |
| 129 | * \param[in] pLlc_Buf The information given by the upper layer to receive data from |
| 130 | * the lower layer |
| 131 | * \param[in] llcBufLength The length of pLlc_Buf given by the upper layer |
| 132 | * |
| 133 | * \retval NFCSTATUS_PENDING If the command is yet to be process. |
| 134 | * \retval NFCSTATUS_INVALID_PARAMETER At least one parameter of the function is invalid. |
| 135 | * \retval Other errors Errors related to the lower layers |
| 136 | * |
| 137 | */ |
| 138 | static |
| 139 | NFCSTATUS |
| 140 | phLlcNfc_Receive ( |
| 141 | void *pContext, |
| 142 | void *pLinkInfo, |
| 143 | uint8_t *pLlcBuf, |
| 144 | uint16_t llcBufLength |
| 145 | ); |
| 146 | /******************** End of Local functions ************************/ |
| 147 | |
| 148 | /********************** Global variables ****************************/ |
| 149 | |
| 150 | /******************** End of Global Variables ***********************/ |
| 151 | |
| 152 | NFCSTATUS |
| 153 | phLlcNfc_Register ( |
| 154 | phNfcIF_sReference_t *psReference, |
| 155 | phNfcIF_sCallBack_t if_callback, |
| 156 | void *psIFConfig |
| 157 | ) |
| 158 | { |
| 159 | NFCSTATUS result = NFCSTATUS_SUCCESS; |
| 160 | phLlcNfc_Context_t *ps_llc_ctxt = NULL; |
| 161 | phNfcLayer_sCfg_t *psconfig = (phNfcLayer_sCfg_t *)psIFConfig; |
| 162 | |
| 163 | PH_LLCNFC_PRINT("Llc Register called\n"); |
| 164 | if ((NULL == psReference) || (NULL == psIFConfig) || |
| 165 | (NULL == psReference->plower_if) || |
| 166 | #if 0 |
| 167 | (NULL == if_callback.pif_ctxt) || |
| 168 | #endif |
| 169 | (NULL == if_callback.notify) || |
| 170 | (NULL == if_callback.receive_complete) || |
| 171 | (NULL == if_callback.send_complete)) |
| 172 | { |
| 173 | result = PHNFCSTVAL(CID_NFC_LLC, |
| 174 | NFCSTATUS_INVALID_PARAMETER); |
| 175 | } |
| 176 | else |
| 177 | { |
| 178 | /* Now LLC is in RESET state */ |
| 179 | ps_llc_ctxt = (phLlcNfc_Context_t*)phOsalNfc_GetMemory( |
| 180 | sizeof(phLlcNfc_Context_t)); |
| 181 | if (NULL == ps_llc_ctxt) |
| 182 | { |
| 183 | /* Memory allocation failed */ |
| 184 | result = PHNFCSTVAL(CID_NFC_LLC, |
| 185 | NFCSTATUS_INSUFFICIENT_RESOURCES); |
| 186 | } |
| 187 | else |
| 188 | { |
| 189 | result = NFCSTATUS_SUCCESS; |
| 190 | |
| 191 | (void)memset(ps_llc_ctxt, 0, sizeof(phLlcNfc_Context_t)); |
| 192 | |
| 193 | /* Register the LLC functions to the upper layer */ |
| 194 | psReference->plower_if->init = (pphNfcIF_Interface_t)&phLlcNfc_Init; |
| 195 | psReference->plower_if->release = (pphNfcIF_Interface_t)&phLlcNfc_Release; |
| 196 | psReference->plower_if->send = (pphNfcIF_Transact_t)&phLlcNfc_Send; |
| 197 | psReference->plower_if->receive = (pphNfcIF_Transact_t)&phLlcNfc_Receive; |
| 198 | /* Copy the LLC context to the upper layer */ |
| 199 | psReference->plower_if->pcontext = ps_llc_ctxt; |
| 200 | |
| 201 | /* Register the callback function from the upper layer */ |
| 202 | ps_llc_ctxt->cb_for_if.receive_complete = if_callback.receive_complete; |
| 203 | ps_llc_ctxt->cb_for_if.send_complete = if_callback.send_complete; |
| 204 | ps_llc_ctxt->cb_for_if.notify = if_callback.notify; |
| 205 | /* Get the upper layer context */ |
| 206 | ps_llc_ctxt->cb_for_if.pif_ctxt = if_callback.pif_ctxt; |
| 207 | |
| 208 | result = phLlcNfc_Interface_Register(ps_llc_ctxt, psconfig); |
| 209 | |
| 210 | if (NFCSTATUS_SUCCESS == result) |
| 211 | { |
| 212 | #ifdef LLC_RELEASE_FLAG |
| 213 | g_release_flag = FALSE; |
| 214 | #endif /* #ifdef LLC_RELEASE_FLAG */ |
| 215 | } |
| 216 | } |
| 217 | } |
| 218 | PH_LLCNFC_DEBUG("Llc Register result : 0x%x\n", result); |
| 219 | return result; |
| 220 | } |
| 221 | |
| 222 | static |
| 223 | NFCSTATUS |
| 224 | phLlcNfc_Init ( |
| 225 | void *pContext, |
| 226 | void *pLinkInfo |
| 227 | ) |
| 228 | { |
| 229 | NFCSTATUS result = NFCSTATUS_SUCCESS; |
| 230 | phLlcNfc_Context_t *ps_llc_ctxt = (phLlcNfc_Context_t*)pContext; |
Daniel Tomas | b313c3d | 2011-05-26 15:52:17 +0200 | [diff] [blame] | 231 | phLlcNfc_LlcPacket_t s_packet_info; |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 232 | |
| 233 | PH_LLCNFC_PRINT("Llc Init called\n"); |
| 234 | if ((NULL == ps_llc_ctxt) || (NULL == pLinkInfo)) |
| 235 | { |
| 236 | result = PHNFCSTVAL(CID_NFC_LLC, |
| 237 | NFCSTATUS_INVALID_PARAMETER); |
| 238 | } |
| 239 | else |
| 240 | { |
| 241 | /* Initialisation */ |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 242 | ps_llc_ctxt->phwinfo = pLinkInfo; |
| 243 | /* Call the internal frame initialise */ |
| 244 | phLlcNfc_H_Frame_Init(ps_llc_ctxt); |
| 245 | /* Call the internal LLC TL interface initialise */ |
| 246 | result = phLlcNfc_Interface_Init(ps_llc_ctxt); |
| 247 | if (NFCSTATUS_SUCCESS == result) |
| 248 | { |
| 249 | /* Call the internal LLC timer initialise */ |
| 250 | result = phLlcNfc_TimerInit(ps_llc_ctxt); |
| 251 | } |
| 252 | |
| 253 | if (NFCSTATUS_SUCCESS == result) |
| 254 | { |
| 255 | /* Create the static timer */ |
| 256 | phLlcNfc_CreateTimers(); |
| 257 | |
| 258 | /* Create a U frame */ |
Daniel Tomas | b313c3d | 2011-05-26 15:52:17 +0200 | [diff] [blame] | 259 | result = phLlcNfc_H_CreateUFramePayload(ps_llc_ctxt, |
| 260 | &s_packet_info, |
| 261 | &(s_packet_info.llcbuf_len), |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 262 | phLlcNfc_e_rset); |
| 263 | } |
| 264 | if (NFCSTATUS_SUCCESS == result) |
| 265 | { |
| 266 | /* Call DAL write */ |
| 267 | result = phLlcNfc_Interface_Write(ps_llc_ctxt, |
Daniel Tomas | b313c3d | 2011-05-26 15:52:17 +0200 | [diff] [blame] | 268 | (uint8_t*)&(s_packet_info.s_llcbuf), |
| 269 | (uint32_t)s_packet_info.llcbuf_len); |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 270 | } |
| 271 | if (NFCSTATUS_PENDING == result) |
| 272 | { |
| 273 | /* Start the timer */ |
| 274 | result = phLlcNfc_StartTimers(PH_LLCNFC_CONNECTIONTIMER, 0); |
| 275 | if (NFCSTATUS_SUCCESS == result) |
| 276 | { |
| 277 | ps_llc_ctxt->s_frameinfo.sent_frame_type = |
| 278 | init_u_rset_frame; |
| 279 | result = NFCSTATUS_PENDING; |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | if (NFCSTATUS_PENDING != result) |
| 284 | { |
| 285 | (void)phLlcNfc_Release(ps_llc_ctxt, pLinkInfo); |
| 286 | } |
| 287 | } |
| 288 | PH_LLCNFC_DEBUG("Llc Init result : 0x%x\n", result); |
| 289 | return result; |
| 290 | } |
| 291 | |
| 292 | NFCSTATUS |
| 293 | phLlcNfc_Release( |
| 294 | void *pContext, |
| 295 | void *pLinkInfo |
| 296 | ) |
| 297 | { |
| 298 | NFCSTATUS result = PHNFCSTVAL(CID_NFC_LLC, |
| 299 | NFCSTATUS_INVALID_PARAMETER); |
| 300 | phLlcNfc_Context_t *ps_llc_ctxt = (phLlcNfc_Context_t*)pContext; |
| 301 | /* |
| 302 | 1. Free all the memory allocated in initialise |
| 303 | */ |
| 304 | PH_LLCNFC_PRINT("Llc release called\n"); |
| 305 | |
| 306 | if ((NULL != ps_llc_ctxt) && (NULL != pLinkInfo)) |
| 307 | { |
| 308 | result = NFCSTATUS_SUCCESS; |
| 309 | ps_llc_ctxt->phwinfo = pLinkInfo; |
| 310 | #ifdef INCLUDE_DALINIT_DEINIT |
| 311 | if (NULL != ps_llc_ctxt->lower_if.release) |
| 312 | { |
| 313 | result = ps_llc_ctxt->lower_if.release( |
| 314 | ps_llc_ctxt->lower_if.pcontext, |
| 315 | pLinkInfo); |
| 316 | } |
| 317 | #endif |
| 318 | if (NULL != ps_llc_ctxt->lower_if.transact_abort) |
| 319 | { |
| 320 | result = ps_llc_ctxt->lower_if.transact_abort( |
| 321 | ps_llc_ctxt->lower_if.pcontext, |
| 322 | pLinkInfo); |
| 323 | } |
| 324 | if (NULL != ps_llc_ctxt->lower_if.unregister) |
| 325 | { |
| 326 | result = ps_llc_ctxt->lower_if.unregister( |
| 327 | ps_llc_ctxt->lower_if.pcontext, |
| 328 | pLinkInfo); |
| 329 | } |
| 330 | |
| 331 | /* Call the internal LLC timer un-initialise */ |
| 332 | phLlcNfc_TimerUnInit(ps_llc_ctxt); |
| 333 | phLlcNfc_H_Frame_DeInit(&ps_llc_ctxt->s_frameinfo); |
| 334 | (void)memset(ps_llc_ctxt, 0, sizeof(phLlcNfc_Context_t)); |
| 335 | phOsalNfc_FreeMemory(ps_llc_ctxt); |
| 336 | ps_llc_ctxt = NULL; |
| 337 | |
| 338 | #ifdef LLC_RELEASE_FLAG |
| 339 | g_release_flag = TRUE; |
| 340 | #endif /* #ifdef LLC_RELEASE_FLAG */ |
| 341 | |
| 342 | } |
| 343 | PH_LLCNFC_DEBUG("Llc release result : 0x%04X\n", result); |
| 344 | return result; |
| 345 | } |
| 346 | |
| 347 | static |
| 348 | NFCSTATUS |
| 349 | phLlcNfc_Send ( |
| 350 | void *pContext, |
| 351 | void *pLinkInfo, |
| 352 | uint8_t *pLlcBuf, |
| 353 | uint16_t llcBufLength |
| 354 | ) |
| 355 | { |
| 356 | /* |
| 357 | 1. Check the function parameters for valid values |
| 358 | 2. Create the I frame llc payload using the upper layer buffer |
| 359 | 3. Send the updated buffer to the below layer |
| 360 | 4. Store the I frame in a list, till acknowledge is received |
| 361 | */ |
| 362 | NFCSTATUS result = NFCSTATUS_SUCCESS; |
| 363 | phLlcNfc_Context_t *ps_llc_ctxt = (phLlcNfc_Context_t*)pContext; |
| 364 | phLlcNfc_Frame_t *ps_frame_info = NULL; |
Daniel Tomas | b313c3d | 2011-05-26 15:52:17 +0200 | [diff] [blame] | 365 | phLlcNfc_LlcPacket_t s_packet_info; |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 366 | phLlcNfc_StoreIFrame_t *ps_store_frame = NULL; |
| 367 | #if 0 |
| 368 | uint8_t count = 1; |
| 369 | #endif /* #if 0 */ |
| 370 | |
| 371 | PH_LLCNFC_PRINT ("Llc Send called\n"); |
| 372 | if ((NULL == ps_llc_ctxt) || (NULL == pLinkInfo) || |
| 373 | (NULL == pLlcBuf) || (0 == llcBufLength) || |
| 374 | (llcBufLength > PH_LLCNFC_MAX_IFRAME_BUFLEN)) |
| 375 | { |
| 376 | /* Parameter check failed */ |
| 377 | result = PHNFCSTVAL(CID_NFC_LLC, |
| 378 | NFCSTATUS_INVALID_PARAMETER); |
| 379 | } |
| 380 | else if (ps_llc_ctxt->s_frameinfo.s_send_store.winsize_cnt >= |
| 381 | ps_llc_ctxt->s_frameinfo.window_size) |
| 382 | { |
| 383 | /* Window size check failed */ |
| 384 | result = PHNFCSTVAL(CID_NFC_LLC, |
| 385 | NFCSTATUS_NOT_ALLOWED); |
| 386 | } |
| 387 | else |
| 388 | { |
| 389 | ps_frame_info = &(ps_llc_ctxt->s_frameinfo); |
| 390 | ps_store_frame = &(ps_frame_info->s_send_store); |
| 391 | |
| 392 | PH_LLCNFC_DEBUG ("Buffer length : 0x%04X\n", llcBufLength); |
| 393 | PH_LLCNFC_PRINT_BUFFER (pLlcBuf, llcBufLength); |
| 394 | |
| 395 | /* Copy the hardware information */ |
| 396 | ps_llc_ctxt->phwinfo = pLinkInfo; |
| 397 | |
| 398 | /* Create I frame with the user buffer */ |
| 399 | (void)phLlcNfc_H_CreateIFramePayload ( |
| 400 | &(ps_llc_ctxt->s_frameinfo), |
| 401 | &s_packet_info, |
| 402 | pLlcBuf, (uint8_t)llcBufLength); |
| 403 | |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 404 | |
| 405 | /* Store the I frame in the send list */ |
| 406 | (void)phLlcNfc_H_StoreIFrame (ps_store_frame, s_packet_info); |
| 407 | result = NFCSTATUS_PENDING; |
| 408 | |
| 409 | #ifdef CTRL_WIN_SIZE_COUNT |
| 410 | |
| 411 | /* No check required */ |
| 412 | if ((TRUE != ps_frame_info->write_pending) && |
| 413 | (PH_LLCNFC_READPEND_REMAIN_BYTE != |
| 414 | ps_frame_info->read_pending)) |
| 415 | |
| 416 | #else /* #ifdef CTRL_WIN_SIZE_COUNT */ |
| 417 | |
| 418 | if (1 == ps_frame_info->s_send_store.winsize_cnt) |
| 419 | |
| 420 | #endif /* #ifdef CTRL_WIN_SIZE_COUNT */ |
| 421 | { |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 422 | /* Call write to the below layer, only if previous write |
| 423 | is completed */ |
| 424 | result = phLlcNfc_Interface_Write (ps_llc_ctxt, |
Daniel Tomas | b313c3d | 2011-05-26 15:52:17 +0200 | [diff] [blame] | 425 | (uint8_t *)&(s_packet_info.s_llcbuf), |
| 426 | (uint32_t)s_packet_info.llcbuf_len); |
Nick Pelly | 5d9927b | 2010-09-23 12:47:58 -0700 | [diff] [blame] | 427 | |
| 428 | if ((NFCSTATUS_PENDING == result) || |
| 429 | (NFCSTATUS_BUSY == PHNFCSTATUS (result))) |
| 430 | { |
| 431 | ps_frame_info->write_status = result; |
| 432 | if (NFCSTATUS_BUSY == PHNFCSTATUS(result)) |
| 433 | { |
| 434 | result = NFCSTATUS_PENDING; |
| 435 | ps_frame_info->write_wait_call = (phLlcNfc_eSentFrameType_t) |
| 436 | ((resend_i_frame == ps_frame_info->write_wait_call) ? |
| 437 | ps_frame_info->write_wait_call : user_i_frame); |
| 438 | } |
| 439 | else |
| 440 | { |
| 441 | /* Start the timer */ |
| 442 | (void)phLlcNfc_StartTimers (PH_LLCNFC_GUARDTIMER, |
| 443 | ps_frame_info->n_s); |
| 444 | |
| 445 | /* "sent_frame_type is updated" only if the data is |
| 446 | written to the lower layer */ |
| 447 | ps_frame_info->sent_frame_type = user_i_frame; |
| 448 | } |
| 449 | } |
| 450 | #if 0 |
| 451 | /* Get the added frame array count */ |
| 452 | count = (uint8_t)((((ps_store_frame->start_pos + |
| 453 | ps_store_frame->winsize_cnt) - count)) % |
| 454 | PH_LLCNFC_MOD_NS_NR); |
| 455 | #endif /* #if 0 */ |
| 456 | } |
| 457 | else |
| 458 | { |
| 459 | ps_frame_info->write_status = PHNFCSTVAL(CID_NFC_LLC, NFCSTATUS_BUSY); |
| 460 | ps_frame_info->write_wait_call = (phLlcNfc_eSentFrameType_t) |
| 461 | ((resend_i_frame == ps_frame_info->write_wait_call) ? |
| 462 | ps_frame_info->write_wait_call : user_i_frame); |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | |
| 467 | PH_LLCNFC_DEBUG ("Llc Send result : 0x%04X\n", result); |
| 468 | return result; |
| 469 | } |
| 470 | |
| 471 | static |
| 472 | NFCSTATUS |
| 473 | phLlcNfc_Receive ( |
| 474 | void *pContext, |
| 475 | void *pLinkInfo, |
| 476 | uint8_t *pLlcBuf, |
| 477 | uint16_t llcBufLength |
| 478 | ) |
| 479 | { |
| 480 | NFCSTATUS result = NFCSTATUS_SUCCESS; |
| 481 | phLlcNfc_Context_t *ps_llc_ctxt = (phLlcNfc_Context_t*)pContext; |
| 482 | phLlcNfc_LlcPacket_t *ps_recv_pkt = NULL; |
| 483 | |
| 484 | PH_LLCNFC_PRINT("Llc Receive called\n"); |
| 485 | if ((NULL == ps_llc_ctxt) || (NULL == pLinkInfo) || |
| 486 | (NULL == pLlcBuf) || (0 == llcBufLength) || |
| 487 | (llcBufLength > PH_LLCNFC_MAX_IFRAME_BUFLEN)) |
| 488 | { |
| 489 | result = PHNFCSTVAL(CID_NFC_LLC, |
| 490 | NFCSTATUS_INVALID_PARAMETER); |
| 491 | } |
| 492 | else |
| 493 | { |
| 494 | ps_llc_ctxt->phwinfo = pLinkInfo; |
| 495 | |
| 496 | ps_recv_pkt = &(ps_llc_ctxt->s_frameinfo.s_recvpacket); |
| 497 | /* Always read the first byte to read the length, then |
| 498 | read the entire data later using the 1 byte buffer */ |
| 499 | llcBufLength = PH_LLCNFC_BYTES_INIT_READ; |
| 500 | /* Call write to the below layer */ |
| 501 | result = phLlcNfc_Interface_Read(ps_llc_ctxt, |
| 502 | PH_LLCNFC_READWAIT_OFF, |
| 503 | &(ps_recv_pkt->s_llcbuf.llc_length_byte), |
| 504 | llcBufLength); |
| 505 | |
| 506 | ps_llc_ctxt->s_frameinfo.upper_recv_call = TRUE; |
| 507 | if (NFCSTATUS_PENDING != result) |
| 508 | { |
| 509 | ps_llc_ctxt->state = phLlcNfc_Initialised_State; |
| 510 | } |
| 511 | } |
| 512 | PH_LLCNFC_DEBUG("Llc Receive result : 0x%04X\n", result); |
| 513 | return result; |
| 514 | } |