diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-08-08 14:42:07 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-08-08 14:42:07 +0300 |
| commit | a6163888f3c56123b1db313743c6147ba498732c (patch) | |
| tree | ff7d15d991d1d09ba6cbc0cec80924f57445bfdd /third_party/fatfs/port/fat_usbmsc.c | |
| parent | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (diff) | |
Add third_party libs
Diffstat (limited to 'third_party/fatfs/port/fat_usbmsc.c')
| -rw-r--r-- | third_party/fatfs/port/fat_usbmsc.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/third_party/fatfs/port/fat_usbmsc.c b/third_party/fatfs/port/fat_usbmsc.c new file mode 100644 index 0000000..a49e439 --- /dev/null +++ b/third_party/fatfs/port/fat_usbmsc.c @@ -0,0 +1,151 @@ +/*-----------------------------------------------------------------------*/
+/*-----------------------------------------------------------------------*/
+/* TivaWare USB MSC module */
+/*-----------------------------------------------------------------------*/
+/*-----------------------------------------------------------------------*/
+
+/*
+ * This file was modified from a sample available from the FatFs
+ * web site. It was modified to work with the TivaWare USB Library.
+ */
+#include <stdint.h>
+#include <stdbool.h>
+#include "inc/hw_types.h"
+#include "driverlib/sysctl.h"
+#include "usblib/usblib.h"
+#include "usblib/usbmsc.h"
+#include "usblib/host/usbhost.h"
+#include "usblib/host/usbhmsc.h"
+#include "fatfs/src/diskio.h"
+#include "fatfs/src/ff.h"
+
+extern tUSBHMSCInstance *g_psMSCInstance;
+
+static volatile
+DSTATUS USBStat = STA_NOINIT; /* Disk status */
+
+/*-----------------------------------------------------------------------*/
+/* Initialize Disk Drive */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS
+disk_initialize(
+ BYTE bValue) /* Physical drive number (0) */
+{
+ /* Set the not initialized flag again. If all goes well and the disk is */
+ /* present, this will be cleared at the end of the function. */
+ USBStat |= STA_NOINIT;
+
+ /* Find out if drive is ready yet. */
+ if (USBHMSCDriveReady(g_psMSCInstance)) return(FR_NOT_READY);
+
+ /* Clear the not init flag. */
+ USBStat &= ~STA_NOINIT;
+
+ return 0;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* Returns the current status of a drive */
+/*-----------------------------------------------------------------------*/
+
+DSTATUS disk_status (
+ BYTE drv) /* Physical drive number (0) */
+{
+ if (drv) return STA_NOINIT; /* Supports only single drive */
+ return USBStat;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* This function reads sector(s) from the disk drive */
+/*-----------------------------------------------------------------------*/
+
+DRESULT disk_read (
+ BYTE drv, /* Physical drive number (0) */
+ BYTE* buff, /* Pointer to the data buffer to store read data */
+ DWORD sector, /* Physical drive nmuber (0) */
+ BYTE count) /* Sector count (1..255) */
+{
+ if(USBStat & STA_NOINIT)
+ {
+ return(RES_NOTRDY);
+ }
+
+ /* READ BLOCK */
+ if (USBHMSCBlockRead(g_psMSCInstance, sector, buff, count) == 0)
+ return RES_OK;
+
+ return RES_ERROR;
+}
+
+
+
+/*-----------------------------------------------------------------------*/
+/* This function writes sector(s) to the disk drive */
+/*-----------------------------------------------------------------------*/
+
+#if _READONLY == 0
+DRESULT disk_write (
+ BYTE ucDrive, /* Physical drive number (0) */
+ const BYTE* buff, /* Pointer to the data to be written */
+ DWORD sector, /* Start sector number (LBA) */
+ BYTE count) /* Sector count (1..255) */
+{
+ if (ucDrive || !count) return RES_PARERR;
+ if (USBStat & STA_NOINIT) return RES_NOTRDY;
+ if (USBStat & STA_PROTECT) return RES_WRPRT;
+
+ /* WRITE BLOCK */
+ if(USBHMSCBlockWrite(g_psMSCInstance, sector, (unsigned char *)buff,
+ count) == 0)
+ return RES_OK;
+
+ return RES_ERROR;
+}
+#endif /* _READONLY */
+
+/*-----------------------------------------------------------------------*/
+/* Miscellaneous Functions */
+/*-----------------------------------------------------------------------*/
+
+DRESULT disk_ioctl (
+ BYTE drv, /* Physical drive number (0) */
+ BYTE ctrl, /* Control code */
+ void *buff) /* Buffer to send/receive control data */
+{
+ if(USBStat & STA_NOINIT)
+ {
+ return(RES_NOTRDY);
+ }
+
+ switch(ctrl)
+ {
+ case CTRL_SYNC:
+ return(RES_OK);
+
+ default:
+ return(RES_PARERR);
+ }
+}
+
+/*---------------------------------------------------------*/
+/* User Provided Timer Function for FatFs module */
+/*---------------------------------------------------------*/
+/* This is a real time clock service to be called from */
+/* FatFs module. Any valid time must be returned even if */
+/* the system does not support a real time clock. */
+
+DWORD get_fattime (void)
+{
+ return ((2007UL-1980) << 25) // Year = 2007
+ | (6UL << 21) // Month = June
+ | (5UL << 16) // Day = 5
+ | (11U << 11) // Hour = 11
+ | (38U << 5) // Min = 38
+ | (0U >> 1) // Sec = 0
+ ;
+}
|