Revision 0:f19563caba14, committed 2020-04-08

Comitter:

MPPT51

Date:

Wed Apr 08 01:17:45 2020 +0000

Commit message:

20200408_MSC_kikkawa

Changed in this revision

diff -r 000000000000 -r f19563caba14 MSCFileSystem.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MSCFileSystem.cpp	Wed Apr 08 01:17:45 2020 +0000
@@ -0,0 +1,113 @@
+/* USB Mass Storage device file system
+ * Copyrigh (c) 2010, Igor Skochinsky
+ * based on SDFileStorage
+ * Copyright (c) 2008-2009, sford
+ */
+ 
+/* Introduction
+ * ------------
+ * TODO: write one
+ * we're basically using NXP's USBHotLite sample code, just plugging in our own FAT library
+ */
+ 
+#include "MSCFileSystem.h"
+#include "usbhost_inc.h"
+
+MSCFileSystem::MSCFileSystem(const char* name) :
+  FATFileSystem(name)
+{
+}
+
+void print_inquiry(USB_INT08U *inqReply)
+{
+    // see USB Mass Storage Class – UFI Command Specification,
+    // 4.2 INQUIRY Command
+    printf("Inquiry reply:\n");
+    uint8_t tmp = inqReply[0]&0x1F;
+    printf("Peripheral device type: %02Xh\n", tmp);
+    if ( tmp == 0 )
+        printf("\t- Direct access (floppy)\n");
+    else if ( tmp == 0x1F )
+        printf("\t- none (no FDD connected)\n");
+    else
+        printf("\t- unknown type\n");
+    tmp = inqReply[1] >> 7;
+    printf("Removable Media Bit: %d\n", tmp);
+    tmp = inqReply[2] & 3;
+    printf("ANSI Version: %02Xh\n", tmp);
+    if ( tmp != 0 )
+        printf("\t- warning! must be 0\n");
+    tmp = (inqReply[2]>>3) & 3;
+    printf("ECMA Version: %02Xh\n", tmp);
+    if ( tmp != 0 )
+        printf("\t- warning! should be 0\n");
+    tmp = inqReply[2]>>6;
+    printf("ISO Version: %02Xh\n", tmp);
+    if ( tmp != 0 )
+        printf("\t- warning! should be 0\n");
+    tmp = inqReply[3] & 0xF;
+    printf("Response Data Format: %02Xh\n", tmp);
+    if ( tmp != 1 )
+        printf("\t- warning! should be 1\n");
+    tmp = inqReply[4];
+    printf("Additional length: %02Xh\n", tmp);
+    if ( tmp != 0x1F )
+        printf("\t- warning! should be 1Fh\n");
+    printf("Vendor Information: '%.8s'\n", &inqReply[8]);
+    printf("Product Identification: '%.16s'\n", &inqReply[16]);
+    printf("Product Revision: '%.4s'\n", &inqReply[32]);        
+}
+
+int MSCFileSystem::initialise_msc()
+{
+    USB_INT32S  rc;
+    USB_INT08U  inquiryResult[INQUIRY_LENGTH];
+    
+    //print_clock();
+    Host_Init();               /* Initialize the  host controller                                    */
+    rc = Host_EnumDev();       /* Enumerate the device connected                                            */
+    if (rc != OK)
+    {
+        fprintf(stderr, "Could not enumerate device: %d\n", rc);
+        return rc;
+    }
+        
+    
+    /* Initialize the mass storage and scsi interfaces */
+    rc = MS_Init( &_blkSize, &_numBlks, inquiryResult );
+    if (rc != OK)
+    {
+        fprintf(stderr, "Could not initialize mass storage interface: %d\n", rc);
+        return rc;
+    }
+    printf("Successfully initialized mass storage interface; %d blocks of size %d\n", _numBlks, _blkSize);
+    print_inquiry(inquiryResult);
+    // FATFileSystem supports only 512-byte blocks
+    return _blkSize == 512 ? OK : 1;
+}
+
+int MSCFileSystem::disk_initialize()
+{
+    if ( initialise_msc() != OK )
+        return 1;
+        
+    return 0;
+}
+
+int MSCFileSystem::disk_write(const char *buffer, int block_number)
+{
+    if ( OK == MS_BulkSend(block_number, 1, (USB_INT08U *)buffer) )
+        return 0;
+    return 1;
+}
+
+int MSCFileSystem::disk_read(char *buffer, int block_number)
+{
+    if ( OK == MS_BulkRecv(block_number, 1, (USB_INT08U *)buffer) )
+        return 0;
+    return 1;
+}
+
+int MSCFileSystem::disk_status() { return 0; }
+int MSCFileSystem::disk_sync() { return 0; }
+int MSCFileSystem::disk_sectors() { return _numBlks; }

diff -r 000000000000 -r f19563caba14 MSCFileSystem.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MSCFileSystem.h	Wed Apr 08 01:17:45 2020 +0000
@@ -0,0 +1,49 @@
+/* USB Mass Storage device file system
+ * Copyrigh (c) 2010, Igor Skochinsky
+ * based on SDFileStorage
+ * Copyright (c) 2008-2009, sford
+ */
+ 
+#ifndef MSCFILESYSTEM_H
+#define MSCFILESYSTEM_H
+
+#include "mbed.h"
+#include "FATFileSystem.h"
+
+/* Class: MSCFileSystem
+ *  Access the filesystem on an attached USB mass storage device (e.g. a memory stick)
+ *
+ * Example:
+ * > MSCFileSystem msc("msc");
+ * > 
+ * > int main() {
+ * >     FILE *fp = fopen("/msc/myfile.txt", "w");
+ * >     fprintf(fp, "Hello World!\n");
+ * >     fclose(fp);
+ * > }
+ */
+class MSCFileSystem : public FATFileSystem {
+public:
+
+    /* Constructor: MSCFileSystem
+     *  Create the File System for accessing a USB mass storage device
+     *
+     * Parameters:
+     *  name - The name used to access the filesystem
+     */
+    MSCFileSystem(const char* name);
+    virtual int disk_initialize();
+    virtual int disk_write(const char *buffer, int block_number);
+    virtual int disk_read(char *buffer, int block_number);    
+    virtual int disk_status();
+    virtual int disk_sync();
+    virtual int disk_sectors();
+
+protected:
+
+    int initialise_msc();
+    uint32_t _numBlks;
+    uint32_t _blkSize;
+};
+
+#endif