diff options
Diffstat (limited to 'stmhal/usbhost/Class/MSC/Src/usbh_msc.c')
| -rw-r--r-- | stmhal/usbhost/Class/MSC/Src/usbh_msc.c | 795 |
1 files changed, 795 insertions, 0 deletions
diff --git a/stmhal/usbhost/Class/MSC/Src/usbh_msc.c b/stmhal/usbhost/Class/MSC/Src/usbh_msc.c new file mode 100644 index 0000000000..53a2cd81df --- /dev/null +++ b/stmhal/usbhost/Class/MSC/Src/usbh_msc.c @@ -0,0 +1,795 @@ +/**
+ ******************************************************************************
+ * @file usbh_msc.c
+ * @author MCD Application Team
+ * @version V3.0.0
+ * @date 18-February-2014
+ * @brief This file implements the MSC class driver functions
+ * ===================================================================
+ * MSC Class Description
+ * ===================================================================
+ * This module manages the MSC class V1.0 following the "Universal
+ * Serial Bus Mass Storage Class (MSC) Bulk-Only Transport (BOT) Version 1.0
+ * Sep. 31, 1999".
+ * This driver implements the following aspects of the specification:
+ * - Bulk-Only Transport protocol
+ * - Subclass : SCSI transparent command set (ref. SCSI Primary Commands - 3 (SPC-3))
+ *
+ * @endverbatim
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT 2014 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 "usbh_msc.h"
+#include "usbh_msc_bot.h"
+#include "usbh_msc_scsi.h"
+
+
+/** @addtogroup USBH_LIB
+ * @{
+ */
+
+/** @addtogroup USBH_CLASS
+ * @{
+ */
+
+/** @addtogroup USBH_MSC_CLASS
+ * @{
+ */
+
+/** @defgroup USBH_MSC_CORE
+ * @brief This file includes the mass storage related functions
+ * @{
+ */
+
+
+/** @defgroup USBH_MSC_CORE_Private_TypesDefinitions
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBH_MSC_CORE_Private_Defines
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBH_MSC_CORE_Private_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_MSC_CORE_Private_Variables
+ * @{
+ */
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_MSC_CORE_Private_FunctionPrototypes
+ * @{
+ */
+
+static USBH_StatusTypeDef USBH_MSC_InterfaceInit (USBH_HandleTypeDef *phost);
+
+static USBH_StatusTypeDef USBH_MSC_InterfaceDeInit (USBH_HandleTypeDef *phost);
+
+static USBH_StatusTypeDef USBH_MSC_Process(USBH_HandleTypeDef *phost);
+
+static USBH_StatusTypeDef USBH_MSC_ClassRequest(USBH_HandleTypeDef *phost);
+
+static USBH_StatusTypeDef USBH_MSC_SOFProcess(USBH_HandleTypeDef *phost);
+
+static USBH_StatusTypeDef USBH_MSC_RdWrProcess(USBH_HandleTypeDef *phost, uint8_t lun);
+
+USBH_ClassTypeDef USBH_msc =
+{
+ "MSC",
+ USB_MSC_CLASS,
+ USBH_MSC_InterfaceInit,
+ USBH_MSC_InterfaceDeInit,
+ USBH_MSC_ClassRequest,
+ USBH_MSC_Process,
+ USBH_MSC_SOFProcess,
+ NULL,
+};
+
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_MSC_CORE_Exported_Variables
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+
+/** @defgroup USBH_MSC_CORE_Private_Functions
+ * @{
+ */
+
+
+/**
+ * @brief USBH_MSC_InterfaceInit
+ * The function init the MSC class.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+static USBH_StatusTypeDef USBH_MSC_InterfaceInit (USBH_HandleTypeDef *phost)
+{
+ uint8_t interface = 0;
+ USBH_StatusTypeDef status = USBH_FAIL ;
+ MSC_HandleTypeDef *MSC_Handle;
+
+ interface = USBH_FindInterface(phost, phost->pActiveClass->ClassCode, MSC_TRANSPARENT, MSC_BOT);
+
+ if(interface == 0xFF) /* Not Valid Interface */
+ {
+ USBH_DbgLog ("Cannot Find the interface for %s class.", phost->pActiveClass->Name);
+ status = USBH_FAIL;
+ }
+ else
+ {
+ USBH_SelectInterface (phost, interface);
+
+ phost->pActiveClass->pData = (MSC_HandleTypeDef *)USBH_malloc (sizeof(MSC_HandleTypeDef));
+ MSC_Handle = phost->pActiveClass->pData;
+
+ if(phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].bEndpointAddress & 0x80)
+ {
+ MSC_Handle->InEp = (phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].bEndpointAddress);
+ MSC_Handle->InEpSize = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].wMaxPacketSize;
+ }
+ else
+ {
+ MSC_Handle->OutEp = (phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].bEndpointAddress);
+ MSC_Handle->OutEpSize = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[0].wMaxPacketSize;
+ }
+
+ if(phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[1].bEndpointAddress & 0x80)
+ {
+ MSC_Handle->InEp = (phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[1].bEndpointAddress);
+ MSC_Handle->InEpSize = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[1].wMaxPacketSize;
+ }
+ else
+ {
+ MSC_Handle->OutEp = (phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[1].bEndpointAddress);
+ MSC_Handle->OutEpSize = phost->device.CfgDesc.Itf_Desc[phost->device.current_interface].Ep_Desc[1].wMaxPacketSize;
+ }
+
+ MSC_Handle->current_lun = 0;
+ MSC_Handle->rw_lun = 0;
+ MSC_Handle->state = MSC_INIT;
+ MSC_Handle->error = MSC_OK;
+ MSC_Handle->req_state = MSC_REQ_IDLE;
+ MSC_Handle->OutPipe = USBH_AllocPipe(phost, MSC_Handle->OutEp);
+ MSC_Handle->InPipe = USBH_AllocPipe(phost, MSC_Handle->InEp);
+
+ USBH_MSC_BOT_Init(phost);
+
+ /* De-Initialize LUNs information */
+ USBH_memset(MSC_Handle->unit, 0, sizeof(MSC_Handle->unit));
+
+ /* Open the new channels */
+ USBH_OpenPipe (phost,
+ MSC_Handle->OutPipe,
+ MSC_Handle->OutEp,
+ phost->device.address,
+ phost->device.speed,
+ USB_EP_TYPE_BULK,
+ MSC_Handle->OutEpSize);
+
+ USBH_OpenPipe (phost,
+ MSC_Handle->InPipe,
+ MSC_Handle->InEp,
+ phost->device.address,
+ phost->device.speed,
+ USB_EP_TYPE_BULK,
+ MSC_Handle->InEpSize);
+
+
+ USBH_LL_SetToggle (phost, MSC_Handle->InPipe,0);
+ USBH_LL_SetToggle (phost, MSC_Handle->OutPipe,0);
+ status = USBH_OK;
+ }
+ return status;
+}
+
+/**
+ * @brief USBH_MSC_InterfaceDeInit
+ * The function DeInit the Pipes used for the MSC class.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_MSC_InterfaceDeInit (USBH_HandleTypeDef *phost)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+
+ if ( MSC_Handle->OutPipe)
+ {
+ USBH_ClosePipe(phost, MSC_Handle->OutPipe);
+ USBH_FreePipe (phost, MSC_Handle->OutPipe);
+ MSC_Handle->OutPipe = 0; /* Reset the Channel as Free */
+ }
+
+ if ( MSC_Handle->InPipe)
+ {
+ USBH_ClosePipe(phost, MSC_Handle->InPipe);
+ USBH_FreePipe (phost, MSC_Handle->InPipe);
+ MSC_Handle->InPipe = 0; /* Reset the Channel as Free */
+ }
+
+ if(phost->pActiveClass->pData)
+ {
+ USBH_free (phost->pActiveClass->pData);
+ phost->pActiveClass->pData = 0;
+ }
+
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_MSC_ClassRequest
+ * The function is responsible for handling Standard requests
+ * for MSC class.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+static USBH_StatusTypeDef USBH_MSC_ClassRequest(USBH_HandleTypeDef *phost)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+ USBH_StatusTypeDef status = USBH_BUSY;
+ uint8_t i;
+
+ /* Switch MSC REQ state machine */
+ switch (MSC_Handle->req_state)
+ {
+ case MSC_REQ_IDLE:
+ case MSC_REQ_GET_MAX_LUN:
+ /* Issue GetMaxLUN request */
+ if(USBH_MSC_BOT_REQ_GetMaxLUN(phost, (uint8_t *)&MSC_Handle->max_lun) == USBH_OK )
+ {
+ MSC_Handle->max_lun = (uint8_t )(MSC_Handle->max_lun) + 1;
+ USBH_UsrLog ("Number of supported LUN: %lu", (int32_t)(MSC_Handle->max_lun));
+
+ for(i = 0; i < MSC_Handle->max_lun; i++)
+ {
+ MSC_Handle->unit[i].prev_ready_state = USBH_FAIL;
+ MSC_Handle->unit[i].state_changed = 0;
+ }
+ status = USBH_OK;
+ }
+ break;
+
+ case MSC_REQ_ERROR :
+ /* a Clear Feature should be issued here */
+ if(USBH_ClrFeature(phost, 0x00) == USBH_OK)
+ {
+ MSC_Handle->req_state = MSC_Handle->prev_req_state;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return status;
+}
+
+/**
+ * @brief USBH_MSC_Process
+ * The function is for managing state machine for MSC data transfers
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+static USBH_StatusTypeDef USBH_MSC_Process(USBH_HandleTypeDef *phost)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+ USBH_StatusTypeDef error = USBH_BUSY ;
+ USBH_StatusTypeDef scsi_status = USBH_BUSY ;
+ USBH_StatusTypeDef ready_status = USBH_BUSY ;
+
+ switch (MSC_Handle->state)
+ {
+ case MSC_INIT:
+
+ if(MSC_Handle->current_lun < MSC_Handle->max_lun)
+ {
+
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_NOT_READY;
+ /* Switch MSC REQ state machine */
+ switch (MSC_Handle->unit[MSC_Handle->current_lun].state)
+ {
+ case MSC_INIT:
+ USBH_UsrLog ("LUN #%d: ", MSC_Handle->current_lun);
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_READ_INQUIRY;
+ MSC_Handle->timer = phost->Timer + 10000;
+
+ case MSC_READ_INQUIRY:
+ scsi_status = USBH_MSC_SCSI_Inquiry(phost, MSC_Handle->current_lun, &MSC_Handle->unit[MSC_Handle->current_lun].inquiry);
+
+ if( scsi_status == USBH_OK)
+ {
+ USBH_UsrLog ("Inquiry Vendor : %s", MSC_Handle->unit[MSC_Handle->current_lun].inquiry.vendor_id);
+ USBH_UsrLog ("Inquiry Product : %s", MSC_Handle->unit[MSC_Handle->current_lun].inquiry.product_id);
+ USBH_UsrLog ("Inquiry Version : %s", MSC_Handle->unit[MSC_Handle->current_lun].inquiry.revision_id);
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_TEST_UNIT_READY;
+ }
+ if( scsi_status == USBH_FAIL)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_REQUEST_SENSE;
+ }
+ else if(scsi_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_IDLE;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_ERROR;
+ }
+ break;
+
+ case MSC_TEST_UNIT_READY:
+ ready_status = USBH_MSC_SCSI_TestUnitReady(phost, MSC_Handle->current_lun);
+
+ if( ready_status == USBH_OK)
+ {
+ if( MSC_Handle->unit[MSC_Handle->current_lun].prev_ready_state != USBH_OK)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state_changed = 1;
+ USBH_UsrLog ("Mass Storage Device ready");
+ }
+ else
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state_changed = 0;
+ }
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_READ_CAPACITY10;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_OK;
+ MSC_Handle->unit[MSC_Handle->current_lun].prev_ready_state = USBH_OK;
+ }
+ if( ready_status == USBH_FAIL)
+ {
+ /* Media not ready, so try to check again during 10s */
+ if( MSC_Handle->unit[MSC_Handle->current_lun].prev_ready_state != USBH_FAIL)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state_changed = 1;
+ USBH_UsrLog ("Mass Storage Device NOT ready");
+ }
+ else
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state_changed = 0;
+ }
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_REQUEST_SENSE;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_NOT_READY;
+ MSC_Handle->unit[MSC_Handle->current_lun].prev_ready_state = USBH_FAIL;
+ }
+ else if(ready_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_IDLE;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_ERROR;
+ }
+ break;
+
+ case MSC_READ_CAPACITY10:
+ scsi_status = USBH_MSC_SCSI_ReadCapacity(phost,MSC_Handle->current_lun, &MSC_Handle->unit[MSC_Handle->current_lun].capacity) ;
+
+ if(scsi_status == USBH_OK)
+ {
+ if(MSC_Handle->unit[MSC_Handle->current_lun].state_changed == 1)
+ {
+ USBH_UsrLog ("Mass Storage Device capacity : %lu MB", \
+ (int32_t)((MSC_Handle->unit[MSC_Handle->current_lun].capacity.block_nbr * MSC_Handle->unit[MSC_Handle->current_lun].capacity.block_size)/1024/1024));
+ USBH_UsrLog ("Block number : %lu", (int32_t)(MSC_Handle->unit[MSC_Handle->current_lun].capacity.block_nbr));
+ USBH_UsrLog ("Block Size : %lu", (int32_t)(MSC_Handle->unit[MSC_Handle->current_lun].capacity.block_size));
+ }
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_IDLE;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_OK;
+ MSC_Handle->current_lun++;
+ }
+ else if( scsi_status == USBH_FAIL)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_REQUEST_SENSE;
+ }
+ else if(scsi_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_IDLE;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_ERROR;
+ }
+ break;
+
+ case MSC_REQUEST_SENSE:
+ scsi_status = USBH_MSC_SCSI_RequestSense(phost, MSC_Handle->current_lun, &MSC_Handle->unit[MSC_Handle->current_lun].sense);
+
+ if( scsi_status == USBH_OK)
+ {
+ if((MSC_Handle->unit[MSC_Handle->current_lun].sense.key == SCSI_SENSE_KEY_UNIT_ATTENTION) ||
+ (MSC_Handle->unit[MSC_Handle->current_lun].sense.key == SCSI_SENSE_KEY_NOT_READY) )
+ {
+
+ if(phost->Timer <= MSC_Handle->timer)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_TEST_UNIT_READY;
+ break;
+ }
+ }
+
+ USBH_UsrLog ("Sense Key : %x", MSC_Handle->unit[MSC_Handle->current_lun].sense.key);
+ USBH_UsrLog ("Additional Sense Code : %x", MSC_Handle->unit[MSC_Handle->current_lun].sense.asc);
+ USBH_UsrLog ("Additional Sense Code Qualifier: %x", MSC_Handle->unit[MSC_Handle->current_lun].sense.ascq);
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_IDLE;
+ MSC_Handle->current_lun++;
+ }
+ if( scsi_status == USBH_FAIL)
+ {
+ USBH_UsrLog ("Mass Storage Device NOT ready");
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_UNRECOVERED_ERROR;
+ }
+ else if(scsi_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[MSC_Handle->current_lun].state = MSC_IDLE;
+ MSC_Handle->unit[MSC_Handle->current_lun].error = MSC_ERROR;
+ }
+ break;
+
+ case MSC_UNRECOVERED_ERROR:
+ MSC_Handle->current_lun++;
+ break;
+
+ default:
+ break;
+ }
+
+#if (USBH_USE_OS == 1)
+ osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
+#endif
+ }
+ else
+ {
+ MSC_Handle->current_lun = 0;
+ MSC_Handle->state = MSC_IDLE;
+#if (USBH_USE_OS == 1)
+ osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
+#endif
+ phost->pUser(phost, HOST_USER_CLASS_ACTIVE);
+ }
+ break;
+
+ case MSC_IDLE:
+ error = USBH_OK;
+ break;
+
+ default:
+ break;
+ }
+ return error;
+}
+
+
+/**
+ * @brief USBH_MSC_SOFProcess
+ * The function is for SOF state
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+static USBH_StatusTypeDef USBH_MSC_SOFProcess(USBH_HandleTypeDef *phost)
+{
+
+ return USBH_OK;
+}
+/**
+ * @brief USBH_MSC_RdWrProcess
+ * The function is for managing state machine for MSC I/O Process
+ * @param phost: Host handle
+ * @param lun: logical Unit Number
+ * @retval USBH Status
+ */
+static USBH_StatusTypeDef USBH_MSC_RdWrProcess(USBH_HandleTypeDef *phost, uint8_t lun)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+ USBH_StatusTypeDef error = USBH_BUSY ;
+ USBH_StatusTypeDef scsi_status = USBH_BUSY ;
+
+ /* Switch MSC REQ state machine */
+ switch (MSC_Handle->unit[lun].state)
+ {
+
+ case MSC_READ:
+ scsi_status = USBH_MSC_SCSI_Read(phost,lun, 0, NULL, 0) ;
+
+ if(scsi_status == USBH_OK)
+ {
+ MSC_Handle->unit[lun].state = MSC_IDLE;
+ error = USBH_OK;
+ }
+ else if( scsi_status == USBH_FAIL)
+ {
+ MSC_Handle->unit[lun].state = MSC_REQUEST_SENSE;
+ }
+ else if(scsi_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[lun].state = MSC_UNRECOVERED_ERROR;
+ error = USBH_FAIL;
+ }
+#if (USBH_USE_OS == 1)
+ osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
+#endif
+ break;
+
+ case MSC_WRITE:
+ scsi_status = USBH_MSC_SCSI_Write(phost,lun, 0, NULL, 0) ;
+
+ if(scsi_status == USBH_OK)
+ {
+ MSC_Handle->unit[lun].state = MSC_IDLE;
+ error = USBH_OK;
+ }
+ else if( scsi_status == USBH_FAIL)
+ {
+ MSC_Handle->unit[lun].state = MSC_REQUEST_SENSE;
+ }
+ else if(scsi_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[lun].state = MSC_UNRECOVERED_ERROR;
+ error = USBH_FAIL;
+ }
+#if (USBH_USE_OS == 1)
+ osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
+#endif
+ break;
+
+ case MSC_REQUEST_SENSE:
+ scsi_status = USBH_MSC_SCSI_RequestSense(phost, lun, &MSC_Handle->unit[lun].sense);
+
+ if( scsi_status == USBH_OK)
+ {
+ USBH_UsrLog ("Sense Key : %x", MSC_Handle->unit[lun].sense.key);
+ USBH_UsrLog ("Additional Sense Code : %x", MSC_Handle->unit[lun].sense.asc);
+ USBH_UsrLog ("Additional Sense Code Qualifier: %x", MSC_Handle->unit[lun].sense.ascq);
+ MSC_Handle->unit[lun].state = MSC_IDLE;
+ MSC_Handle->unit[lun].error = MSC_ERROR;
+
+ error = USBH_FAIL;
+ }
+ if( scsi_status == USBH_FAIL)
+ {
+ USBH_UsrLog ("Mass Storage Device NOT ready");
+ }
+ else if(scsi_status == USBH_UNRECOVERED_ERROR)
+ {
+ MSC_Handle->unit[lun].state = MSC_UNRECOVERED_ERROR;
+ error = USBH_FAIL;
+ }
+#if (USBH_USE_OS == 1)
+ osMessagePut ( phost->os_event, USBH_CLASS_EVENT, 0);
+#endif
+ break;
+
+ default:
+ break;
+
+ }
+ return error;
+}
+
+/**
+ * @brief USBH_MSC_IsReady
+ * The function check if the MSC function is ready
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+uint8_t USBH_MSC_IsReady (USBH_HandleTypeDef *phost)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+
+ if(phost->gState == HOST_CLASS)
+ {
+ return (MSC_Handle->state == MSC_IDLE);
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+/**
+ * @brief USBH_MSC_GetMaxLUN
+ * The function return the Max LUN supported
+ * @param phost: Host handle
+ * @retval logical Unit Number supported
+ */
+int8_t USBH_MSC_GetMaxLUN (USBH_HandleTypeDef *phost)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+
+ if ((phost->gState != HOST_CLASS) && (MSC_Handle->state == MSC_IDLE))
+ {
+ return MSC_Handle->max_lun;
+ }
+ return 0xFF;
+}
+
+/**
+ * @brief USBH_MSC_UnitIsReady
+ * The function check whether a LUN is ready
+ * @param phost: Host handle
+ * @param lun: logical Unit Number
+ * @retval Lun status (0: not ready / 1: ready)
+ */
+uint8_t USBH_MSC_UnitIsReady (USBH_HandleTypeDef *phost, uint8_t lun)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+
+ if(phost->gState == HOST_CLASS)
+ {
+ return (MSC_Handle->unit[lun].error == MSC_OK);
+ }
+ else
+ {
+ return 0;
+ }
+}
+
+/**
+ * @brief USBH_MSC_GetLUNInfo
+ * The function return a LUN information
+ * @param phost: Host handle
+ * @param lun: logical Unit Number
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_MSC_GetLUNInfo(USBH_HandleTypeDef *phost, uint8_t lun, MSC_LUNTypeDef *info)
+{
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+ if(phost->gState == HOST_CLASS)
+ {
+ USBH_memcpy(info,&MSC_Handle->unit[lun], sizeof(MSC_LUNTypeDef));
+ return USBH_OK;
+ }
+ else
+ {
+ return USBH_FAIL;
+ }
+}
+
+/**
+ * @brief USBH_MSC_Read
+ * The function performs a Read operation
+ * @param phost: Host handle
+ * @param lun: logical Unit Number
+ * @param address: sector address
+ * @param pbuf: pointer to data
+ * @param length: number of sector to read
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_MSC_Read(USBH_HandleTypeDef *phost,
+ uint8_t lun,
+ uint32_t address,
+ uint8_t *pbuf,
+ uint32_t length)
+{
+ uint32_t timeout;
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+
+ if ((phost->device.is_connected == 0) ||
+ (phost->gState != HOST_CLASS) ||
+ (MSC_Handle->unit[lun].state != MSC_IDLE))
+ {
+ return USBH_FAIL;
+ }
+ MSC_Handle->state = MSC_READ;
+ MSC_Handle->unit[lun].state = MSC_READ;
+ MSC_Handle->rw_lun = lun;
+ USBH_MSC_SCSI_Read(phost,
+ lun,
+ address,
+ pbuf,
+ length);
+
+ timeout = phost->Timer + (10000 * length);
+ while (USBH_MSC_RdWrProcess(phost, lun) == USBH_BUSY)
+ {
+ if((phost->Timer > timeout) || (phost->device.is_connected == 0))
+ {
+ MSC_Handle->state = MSC_IDLE;
+ return USBH_FAIL;
+ }
+ }
+ MSC_Handle->state = MSC_IDLE;
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_MSC_Write
+ * The function performs a Write operation
+ * @param phost: Host handle
+ * @param lun: logical Unit Number
+ * @param address: sector address
+ * @param pbuf: pointer to data
+ * @param length: number of sector to write
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_MSC_Write(USBH_HandleTypeDef *phost,
+ uint8_t lun,
+ uint32_t address,
+ uint8_t *pbuf,
+ uint32_t length)
+{
+ uint32_t timeout;
+ MSC_HandleTypeDef *MSC_Handle = phost->pActiveClass->pData;
+
+ if ((phost->device.is_connected == 0) ||
+ (phost->gState != HOST_CLASS) ||
+ (MSC_Handle->unit[lun].state != MSC_IDLE))
+ {
+ return USBH_FAIL;
+ }
+ MSC_Handle->state = MSC_WRITE;
+ MSC_Handle->unit[lun].state = MSC_WRITE;
+ MSC_Handle->rw_lun = lun;
+ USBH_MSC_SCSI_Write(phost,
+ lun,
+ address,
+ pbuf,
+ length);
+
+ timeout = phost->Timer + (10000 * length);
+ while (USBH_MSC_RdWrProcess(phost, lun) == USBH_BUSY)
+ {
+ if((phost->Timer > timeout) || (phost->device.is_connected == 0))
+ {
+ MSC_Handle->state = MSC_IDLE;
+ return USBH_FAIL;
+ }
+ }
+ MSC_Handle->state = MSC_IDLE;
+ return USBH_OK;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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