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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
* @{
*/
/* 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 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 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 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);
/* Init Host Library */
USBH_Init(&hUSB_Host, USBH_UserProcess, 0);
/* 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);
/* 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_DISCONNECTION_EVENT:
f_mount(0, USBDISK_Drive, 0);
StorageStatus[USB_DISK_UNIT] = 0;
break;
}
}
}
}
/**
* @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 == USB_DISK_UNIT)
{
fs = &USBDISK_FatFs;
tot_sect = (fs->n_fatent - 2) * fs->csize;
}
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 == USB_DISK_UNIT)
{
fs = &USBDISK_FatFs;
res = f_getfree("0:", (DWORD *)&fre_clust, &fs);
}
if(res == FR_OK)
{
return (fre_clust * fs->csize);
}
else
{
return 0;
}
}
/**
* @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_DISCONNECTION:
osMessagePut ( StorageEvent, USBDISK_DISCONNECTION_EVENT, 0);
break;
case HOST_USER_CLASS_ACTIVE:
osMessagePut ( StorageEvent, USBDISK_CONNECTION_EVENT, 0);
break;
}
}
/**
* @brief Return file extension and removed from file name.
* @param pFile: pointer to the file name.
* @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;
}
}
/* Copy extension */
j = 0;
while (*(pFile + ++i) != '\0') {
*(pExt + j) = *(pFile + i);
j++;
}
*(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;
}
}
/* Copy extension */
j = 0;
while (*(pFile + ++i) != '\0') {
*(pExt + j) = *(pFile + i);
j++;
}
*(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;
char tmp[CHOOSEFILE_MAXLEN];
FRESULT res = FR_INT_ERR;
char *fn;
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;
}
}
res = f_opendir(&dir, tmp);
if (res == FR_OK)
{
res = f_readdir(&dir, &fno);
}
break;
case CHOOSEFILE_FINDNEXT:
res = f_readdir(&dir, &fno);
break;
}
if (res == FR_OK)
{
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;
}
else
{
res = f_readdir(&dir, &fno);
if (res != FR_OK || fno.fname[0] == 0)
{
f_closedir(&dir);
return 1;
}
else
{
fn = fno.fname;
}
}
}
else if((strstr(pInfo->pMask, ".audio")))
{
if((strstr(fn, ".wav")) || (strstr(fn, ".WAV")))
{
break;
}
else
{
res = f_readdir(&dir, &fno);
if (res != FR_OK || fno.fname[0] == 0)
{
f_closedir(&dir);
return 1;
}
else
{
fn = fno.fname;
}
}
}
else if((strstr(pInfo->pMask, ".video")))
{
if((strstr(fn, ".emf")) || (strstr(fn, ".EMF")))
{
break;
}
else
{
res = f_readdir(&dir, &fno);
if (res != FR_OK || fno.fname[0] == 0)
{
f_closedir(&dir);
return 1;
}
else
{
fn = fno.fname;
}
}
}
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;
}
else
{
fn = fno.fname;
}
}
else
{
break;
}
}
if(fn[0] == 0)
{
f_closedir(&dir);
return 1;
}
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;
}
else
{
c = '-';
}
acAttrib[i] = c;
}
if((fno.fattrib & AM_DIR) == AM_DIR)
{
acExt[0] = 0;
}
else
{
GetExt(fn, acExt);
}
pInfo->pAttrib = acAttrib;
pInfo->pName = fn;
pInfo->pExt = acExt;
pInfo->SizeL = fno.fsize;
pInfo->SizeH = 0;
}
return res;
}
/**
* @}
*/
/**
* @}
*/