AGV / agv_shengyiPPxiaoche · Files

usb_otg.c 9.48 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 
/**
  ******************************************************************************
  * @file    usb_otg.c
  * @author  MCD Application Team
  * @version V2.1.0
  * @date    19-March-2012
  * @brief   OTG Core Layer
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usb_defines.h"
#include "usb_regs.h"
#include "usb_core.h"
#include "usb_otg.h"

/** @addtogroup USB_OTG_DRIVER
  * @{
  */
  
/** @defgroup USB_OTG 
  * @brief This file is the interface between EFSL ans Host mass-storage class
  * @{
  */


/** @defgroup USB_OTG_Private_Defines
  * @{
  */ 
/**
  * @}
  */ 
 

/** @defgroup USB_OTG_Private_TypesDefinitions
  * @{
  */ 
/**
  * @}
  */ 



/** @defgroup USB_OTG_Private_Macros
  * @{
  */ 
/**
  * @}
  */ 


/** @defgroup USB_OTG_Private_Variables
  * @{
  */ 
/**
  * @}
  */ 


/** @defgroup USB_OTG_Private_FunctionPrototypes
  * @{
  */ 

uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev);

static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev);
static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev);
static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev);

/**
  * @}
  */ 


/** @defgroup USB_OTG_Private_Functions
  * @{
  */ 


/*                           OTG Interrupt Handler                         */


/**
  * @brief  STM32_USBO_OTG_ISR_Handler
  *         
  * @param  None
  * @retval : None
  */
uint32_t STM32_USBO_OTG_ISR_Handler(USB_OTG_CORE_HANDLE *pdev)
{
  uint32_t retval = 0;
  USB_OTG_GINTSTS_TypeDef  gintsts ;
  gintsts.d32 = 0;

  gintsts.d32 = USB_OTG_Read_itr(pdev);
  if (gintsts.d32 == 0)
  {
    return 0;
  }
  if (gintsts.b.otgintr)
  {
    retval |= USB_OTG_HandleOTG_ISR(pdev);
  }
  if (gintsts.b.conidstschng)
  {
    retval |= USB_OTG_HandleConnectorIDStatusChange_ISR(pdev);
  }
  if (gintsts.b.sessreqintr)
  {
    retval |= USB_OTG_HandleSessionRequest_ISR(pdev);
  }
  return retval;
}


/**
  * @brief  USB_OTG_Read_itr
  *         returns the Core Interrupt register
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev)
{
  USB_OTG_GINTSTS_TypeDef  gintsts;
  USB_OTG_GINTMSK_TypeDef  gintmsk;
  USB_OTG_GINTMSK_TypeDef  gintmsk_common;
  
  
  gintsts.d32 = 0;
  gintmsk.d32 = 0;
  gintmsk_common.d32 = 0;
  
  /* OTG interrupts */
  gintmsk_common.b.sessreqintr = 1;
  gintmsk_common.b.conidstschng = 1;
  gintmsk_common.b.otgintr = 1;
  
  gintsts.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTSTS);
  gintmsk.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTMSK);
  return ((gintsts.d32 & gintmsk.d32 ) & gintmsk_common.d32);
}


/**
  * @brief  USB_OTG_HandleOTG_ISR
  *         handles the OTG Interrupts
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev)
{
  USB_OTG_GOTGINT_TypeDef  gotgint;
  USB_OTG_GOTGCTL_TypeDef  gotgctl;
  
  
  gotgint.d32 = 0;
  gotgctl.d32 = 0;
  
  gotgint.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGINT);
  gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
  
  if (gotgint.b.sesenddet)
  {
    gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
    
    
    if (USB_OTG_IsDeviceMode(pdev))
    {

    }
    else if (USB_OTG_IsHostMode(pdev))
    {

    }
  }

  /* ----> SRP SUCCESS or FAILURE INTERRUPT <---- */
  if (gotgint.b.sesreqsucstschng)
  {
    gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
    if (gotgctl.b.sesreqscs) /* Session request success                                          */
    {
      if (USB_OTG_IsDeviceMode(pdev))
      {

      }
      /* Clear Session Request */
      gotgctl.d32 = 0;
      gotgctl.b.sesreq = 1;
      USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GOTGCTL, gotgctl.d32, 0);
    }
    else /* Session request failure                                          */
    {
      if (USB_OTG_IsDeviceMode(pdev))
      {

      }
    }
  }
  /* ----> HNP SUCCESS or FAILURE INTERRUPT <---- */
  if (gotgint.b.hstnegsucstschng)
  {
    gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);

    if (gotgctl.b.hstnegscs)                                    /* Host negotiation success                                         */
    {
      if (USB_OTG_IsHostMode(pdev))                              /* The core AUTOMATICALLY sets the Host mode                        */
      {

      }
    }
    else                                                        /* Host negotiation failure */
    {

    }
    gotgint.b.hstnegsucstschng = 1;                             /* Ack "Host Negotiation Success Status Change" interrupt.          */
  }
  /* ----> HOST NEGOTIATION DETECTED INTERRUPT <---- */
  if (gotgint.b.hstnegdet)
  {
    if (USB_OTG_IsDeviceMode(pdev))                              /* The core AUTOMATICALLY sets the Host mode                        */
    {

    }
    else
    {

    }
  }
  if (gotgint.b.adevtoutchng)
  {}
  if (gotgint.b.debdone)
  {
    USB_OTG_ResetPort(pdev);
  }
  /* Clear OTG INT */
  USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGINT, gotgint.d32);
  return 1;
}


/**
  * @brief  USB_OTG_HandleConnectorIDStatusChange_ISR
  *         handles the Connector ID Status Change Interrupt
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev)
{
  USB_OTG_GINTMSK_TypeDef  gintmsk;
  USB_OTG_GOTGCTL_TypeDef   gotgctl;
  USB_OTG_GINTSTS_TypeDef  gintsts;
  
  gintsts.d32 = 0 ;
  gintmsk.d32 = 0 ;
  gotgctl.d32 = 0 ;
  gintmsk.b.sofintr = 1;
  
  USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GINTMSK, gintmsk.d32, 0);
  gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
  
  /* B-Device connector (Device Mode) */
  if (gotgctl.b.conidsts)
  {
    USB_OTG_DisableGlobalInt(pdev);
    USB_OTG_CoreInitDev(pdev);
    USB_OTG_EnableGlobalInt(pdev);
    pdev->otg.OTG_State = B_PERIPHERAL;
  }
  else
  {
    USB_OTG_DisableGlobalInt(pdev);
    USB_OTG_CoreInitHost(pdev);
    USB_OTG_EnableGlobalInt(pdev);
    pdev->otg.OTG_State = A_HOST;
  }
  /* Set flag and clear interrupt */
  gintsts.b.conidstschng = 1;
  USB_OTG_WRITE_REG32 (&pdev->regs.GREGS->GINTSTS, gintsts.d32);
  return 1;
}


/**
  * @brief  USB_OTG_HandleSessionRequest_ISR 
  *           Initiating the Session Request Protocol
  * @param  None
  * @retval : status
  */
static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev)
{
  USB_OTG_GINTSTS_TypeDef  gintsts;
  USB_OTG_GOTGCTL_TypeDef   gotgctl;


  gotgctl.d32 = 0;
  gintsts.d32 = 0;

  gotgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
  if (USB_OTG_IsDeviceMode(pdev) && (gotgctl.b.bsesvld))
  {

  }
  else if (gotgctl.b.asesvld)
  {
  }
  /* Clear interrupt */
  gintsts.d32 = 0;
  gintsts.b.sessreqintr = 1;
  USB_OTG_WRITE_REG32 (&pdev->regs.GREGS->GINTSTS, gintsts.d32);
  return 1;
}


/**
  * @brief  USB_OTG_InitiateSRP
  *         Initiate an srp session
  * @param  None
  * @retval : None
  */
void USB_OTG_InitiateSRP(USB_OTG_CORE_HANDLE *pdev)
{
  USB_OTG_GOTGCTL_TypeDef  otgctl;

  otgctl.d32 = 0;

  otgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
  if (otgctl.b.sesreq)
  {
    return; /* SRP in progress */
  }
  otgctl.b.sesreq = 1;
  USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
}


/**
  * @brief  USB_OTG_InitiateHNP
  *         Initiate HNP
  * @param  None
  * @retval : None
  */
void USB_OTG_InitiateHNP(USB_OTG_CORE_HANDLE *pdev , uint8_t state, uint8_t mode)
{
  USB_OTG_GOTGCTL_TypeDef   otgctl;
  USB_OTG_HPRT0_TypeDef    hprt0;
  
  otgctl.d32 = 0;
  hprt0.d32  = 0;

  otgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
  if (mode)
  { /* Device mode */
    if (state)
    {

      otgctl.b.devhnpen = 1; /* B-Dev has been enabled to perform HNP         */
      otgctl.b.hnpreq   = 1; /* Initiate an HNP req. to the connected USB host*/
      USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
    }
  }
  else
  { /* Host mode */
    if (state)
    {
      otgctl.b.hstsethnpen = 1; /* A-Dev has enabled B-device for HNP       */
      USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
      /* Suspend the bus so that B-dev will disconnect indicating the initial condition for HNP to DWC_Core */
      hprt0.d32  = USB_OTG_ReadHPRT0(pdev);
      hprt0.b.prtsusp = 1; /* The core clear this bit when disconnect interrupt generated (GINTSTS.DisconnInt = '1') */
      USB_OTG_WRITE_REG32(pdev->regs.HPRT0, hprt0.d32);
    }
  }
}


/**
  * @brief  USB_OTG_GetCurrentState
  *         Return current OTG State
  * @param  None
  * @retval : None
  */
uint32_t USB_OTG_GetCurrentState (USB_OTG_CORE_HANDLE *pdev)
{
  return pdev->otg.OTG_State;
}


/**
* @}
*/ 

/**
* @}
*/ 

/**
* @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/