STemWin
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Outline
Includes
#include "k_storage.h"
Private typedef
_aAttrib
Private variables
USBDISK_FatFs
USBDISK_Drive
hUSB_Host
StorageEvent
dir
acAttrib
acExt
StorageStatus
Private function prototypes
k_StorageInit()
StorageThread(const void *)
k_StorageGetStatus(uint8_t)
k_StorageGetCapacity(uint8_t)
k_StorageGetFree(uint8_t)
USBH_UserProcess(USBH_HandleTypeDef *, uint8_t)
GetExt(char *, char *)
k_GetExtOnly(char *, char *)
k_GetData(CHOOSEFILE_INFO *)
Files
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SourceVuSTM32 Libraries and SamplesSTemWinCore/Src/k_storage.c
 
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/** ****************************************************************************** * @file k_storage.c * @author MCD Application Team * @brief This file provides the kernel storage functions ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /* Includes ------------------------------------------------------------------*/ #include "k_storage.h" /** @addtogroup CORE * @{ *//* ... */ /** @defgroup KERNEL_STORAGE * @brief Kernel storage routines * @{ *//* ... */ Includes /* External variables --------------------------------------------------------*/ /* Private typedef -----------------------------------------------------------*/ static struct { U32 Mask; char c; ...} _aAttrib[] = { { AM_RDO, 'R' }, { AM_HID, 'H' }, { AM_SYS, 'S' }, { AM_DIR, 'D' }, { AM_ARC, 'A' }, ...};Private typedef /* Private defines -----------------------------------------------------------*/ /* Private macros ------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ FATFS USBDISK_FatFs; /* File system object for USB disk logical drive */ char USBDISK_Drive[4]; /* USB Host logical drive number */ USBH_HandleTypeDef hUSB_Host; osMessageQId StorageEvent; DIR dir; static char acAttrib[10]; static char acExt[FILEMGR_MAX_EXT_SIZE]; static uint32_t StorageStatus[NUM_DISK_UNITS];Private variables /* Private function prototypes -----------------------------------------------*/ static void StorageThread(void const * argument); static void USBH_UserProcess (USBH_HandleTypeDef *phost, uint8_t id); static void GetExt(char * pFile, char * pExt);Private function prototypes /* Private functions ---------------------------------------------------------*/ /** * @brief Storage drives initialization * @param None * @retval None *//* ... */ void k_StorageInit(void) { /* Link the USB Host disk I/O driver */ FATFS_LinkDriver(&USBH_Driver, USBDISK_Drive); /* Create USB background task */ osThreadDef(STORAGE_Thread, StorageThread, osPriorityLow, 0, 64); osThreadCreate (osThread(STORAGE_Thread), NULL); /* Create Storage Message Queue */ osMessageQDef(osqueue, 10, uint16_t); StorageEvent = osMessageCreate (osMessageQ(osqueue), NULL); /* Init Host Library */ USBH_Init(&hUSB_Host, USBH_UserProcess, 0); /* Add Supported Class */ USBH_RegisterClass(&hUSB_Host, USBH_MSC_CLASS); /* Start Host Process */ USBH_Start(&hUSB_Host); }{ ... } /** * @brief Storage Thread * @param argument: pointer that is passed to the thread function as start argument. * @retval None *//* ... */ static void StorageThread(void const * argument) { osEvent event; for( ;; ) { event = osMessageGet( StorageEvent, osWaitForever ); if( event.status == osEventMessage ) { switch(event.value.v) { case USBDISK_CONNECTION_EVENT: f_mount(&USBDISK_FatFs,USBDISK_Drive, 0); StorageStatus[USB_DISK_UNIT] = 1; break; case USBDISK_CONNECTION_EVENT: case USBDISK_DISCONNECTION_EVENT: f_mount(0, USBDISK_Drive, 0); StorageStatus[USB_DISK_UNIT] = 0; break; case USBDISK_DISCONNECTION_EVENT: }switch (event.value.v) { ... } }if (event.status == osEventMessage) { ... } }for (;;) { ... } }{ ... } /** * @brief Storage get status * @param unit: logical storage unit index. * @retval int *//* ... */ uint8_t k_StorageGetStatus (uint8_t unit) { return StorageStatus[unit]; }{ ... } /** * @brief Storage get capacity * @param unit: logical storage unit index. * @retval int *//* ... */ uint32_t k_StorageGetCapacity (uint8_t unit) { uint32_t tot_sect = 0; FATFS *fs; if(unit == 0) { fs = &USBDISK_FatFs; tot_sect = (fs->n_fatent - 2) * fs->csize; }if (unit == 0) { ... } return (tot_sect); }{ ... } /** * @brief Storage get free space * @param unit: logical storage unit index. * @retval int *//* ... */ uint32_t k_StorageGetFree (uint8_t unit) { uint32_t fre_clust = 0; FATFS *fs; FRESULT res = FR_INT_ERR; if(unit == 0) { fs = &USBDISK_FatFs; res = f_getfree("0:", (DWORD *)&fre_clust, &fs); }if (unit == 0) { ... } if(res == FR_OK) { return (fre_clust * fs->csize); }if (res == FR_OK) { ... } else { return 0; }else { ... } }{ ... } /** * @brief User Process * @param phost: Host handle * @param id: Host Library user message ID * @retval None *//* ... */ static void USBH_UserProcess (USBH_HandleTypeDef *phost, uint8_t id) { switch (id) { case HOST_USER_SELECT_CONFIGURATION: break; case HOST_USER_SELECT_CONFIGURATION: case HOST_USER_DISCONNECTION: osMessagePut ( StorageEvent, USBDISK_DISCONNECTION_EVENT, 0); break; case HOST_USER_DISCONNECTION: case HOST_USER_CLASS_ACTIVE: osMessagePut ( StorageEvent, USBDISK_CONNECTION_EVENT, 0); break;case HOST_USER_CLASS_ACTIVE: }switch (id) { ... } }{ ... } /** * @brief Callback function of the File Control page * @param pFile: pointer to the file. * @param pExt: pointer to the file extension * @retval None *//* ... */ static void GetExt(char * pFile, char * pExt) { int Len; int i; int j; /* Search beginning of extension */ Len = strlen(pFile); for (i = Len; i > 0; i--) { if (*(pFile + i) == '.') { *(pFile + i) = '\0'; /* Cut extension from filename */ break; }if (*(pFile + i) == '.') { ... } }for (i = Len; i > 0; i--) { ... } /* Copy extension */ j = 0; while (*(pFile + ++i) != '\0') { *(pExt + j) = *(pFile + i); j++; }while (*(pFile + ++i) != '\0') { ... } *(pExt + j) = '\0'; /* Set end of string */ }{ ... } /** * @brief Return the extension Only * @param pFile: pointer to the file name. * @param pExt: pointer to the file extension * @retval None *//* ... */ void k_GetExtOnly(char * pFile, char * pExt) { int Len; int i; int j; /* Search beginning of extension */ Len = strlen(pFile); for (i = Len; i > 0; i--) { if (*(pFile + i) == '.') { break; }if (*(pFile + i) == '.') { ... } }for (i = Len; i > 0; i--) { ... } /* Copy extension */ j = 0; while (*(pFile + ++i) != '\0') { *(pExt + j) = *(pFile + i); j++; }while (*(pFile + ++i) != '\0') { ... } *(pExt + j) = '\0'; /* Set end of string */ }{ ... } /** * @brief This function is responsible to pass information about the requested file * @param pInfo: Pointer to structure which contains all details of the requested file. * @retval None *//* ... */ int k_GetData(CHOOSEFILE_INFO * pInfo) { char c; int i = 0; char tmp[CHOOSEFILE_MAXLEN]; static char fn[CHOOSEFILE_MAXLEN]; FRESULT res = FR_INT_ERR; FILINFO fno; switch (pInfo->Cmd) { case CHOOSEFILE_FINDFIRST: f_closedir(&dir); /* reformat path */ memset(tmp, 0, CHOOSEFILE_MAXLEN); strcpy(tmp, pInfo->pRoot); for(i= CHOOSEFILE_MAXLEN; i > 0; i--) { if(tmp[i] == '/') { tmp[i] = 0; break; }if (tmp[i] == '/') { ... } }for (i= CHOOSEFILE_MAXLEN; i > 0; i--) { ... } res = f_opendir(&dir, tmp); if (res == FR_OK) { res = f_readdir(&dir, &fno); }if (res == FR_OK) { ... } break; case CHOOSEFILE_FINDFIRST: case CHOOSEFILE_FINDNEXT: res = f_readdir(&dir, &fno); break;case CHOOSEFILE_FINDNEXT: }switch (pInfo->Cmd) { ... } if (res == FR_OK) { strcpy(fn, fno.fname); while (((fno.fattrib & AM_DIR) == 0) && (res == FR_OK)) { if((strstr(pInfo->pMask, ".img"))) { if((strstr(fn, ".bmp")) || (strstr(fn, ".jpg")) || (strstr(fn, ".BMP")) || (strstr(fn, ".JPG"))) { break; }if ((strstr(fn, ".bmp")) || (strstr(fn, ".jpg")) || (strstr(fn, ".BMP")) || (strstr(fn, ".JPG"))) { ... } else { res = f_readdir(&dir, &fno); if (res != FR_OK || fno.fname[0] == 0) { f_closedir(&dir); return 1; }if (res != FR_OK || fno.fname[0] == 0) { ... } else { strcpy(fn, fno.fname); }else { ... } }else { ... } }if ((strstr(pInfo->pMask, ".img"))) { ... } else if((strstr(pInfo->pMask, ".video"))) { if((strstr(fn, ".emf")) || (strstr(fn, ".EMF"))) { break; }if ((strstr(fn, ".emf")) || (strstr(fn, ".EMF"))) { ... } else { res = f_readdir(&dir, &fno); if (res != FR_OK || fno.fname[0] == 0) { f_closedir(&dir); return 1; }if (res != FR_OK || fno.fname[0] == 0) { ... } else { strcpy(fn, fno.fname); }else { ... } }else { ... } }else if ((strstr(pInfo->pMask, ".video"))) { ... } else if(strstr(fn, pInfo->pMask) == NULL) { res = f_readdir(&dir, &fno); if (res != FR_OK || fno.fname[0] == 0) { f_closedir(&dir); return 1; }if (res != FR_OK || fno.fname[0] == 0) { ... } else { strcpy(fn, fno.fname); }else { ... } }else if (strstr(fn, pInfo->pMask) == NULL) { ... } else { break; }else { ... } }while (((fno.fattrib & AM_DIR) == 0) && (res == FR_OK)) { ... } if(fn[0] == 0) { f_closedir(&dir); return 1; }if (fn[0] == 0) { ... } pInfo->Flags = ((fno.fattrib & AM_DIR) == AM_DIR) ? CHOOSEFILE_FLAG_DIRECTORY : 0; for (i = 0; i < GUI_COUNTOF(_aAttrib); i++) { if (fno.fattrib & _aAttrib[i].Mask) { c = _aAttrib[i].c; }if (fno.fattrib & _aAttrib[i].Mask) { ... } else { c = '-'; }else { ... } acAttrib[i] = c; }for (i = 0; i < GUI_COUNTOF(_aAttrib); i++) { ... } if((fno.fattrib & AM_DIR) == AM_DIR) { acExt[0] = 0; }if ((fno.fattrib & AM_DIR) == AM_DIR) { ... } else { GetExt(fn, acExt); }else { ... } pInfo->pAttrib = acAttrib; pInfo->pName = fn; pInfo->pExt = acExt; pInfo->SizeL = fno.fsize; pInfo->SizeH = 0; }if (res == FR_OK) { ... } return res; }{ ... } /** * @} *//* ... */ /** * @} *//* ... */
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