Diff: USBHostMSD/USBHostMSD.h

Revision:

0:dae1ac0c0a7b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostMSD/USBHostMSD.h	Wed Aug 07 05:33:53 2019 +0000
@@ -0,0 +1,129 @@
+/* mbed USBHost Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.
+ */
+
+#ifndef USBHOSTMSD_H
+#define USBHOSTMSD_H
+
+#include "USBHostConf.h"
+
+#if USBHOST_MSD
+
+#include "USBHost.h"
+#include "FATFileSystem.h"
+#include "BlockDevice.h"
+
+/**
+ * A class to communicate a USB flash disk
+ */
+class USBHostMSD : public IUSBEnumerator, public BlockDevice
+{
+public:
+    /**
+     * Constructor
+     *
+     * @param rootdir mount name
+     */
+    USBHostMSD();
+
+    /**
+     * Check if a MSD device is connected
+     *
+     * @return true if a MSD device is connected
+     */
+    bool connected();
+
+    /**
+     * Try to connect to a MSD device
+     *
+     * @return true if connection was successful
+     */
+    bool connect();
+    virtual int init();
+    virtual int deinit()
+    {
+        return BD_ERROR_OK;
+    };
+    virtual int read(void *buffer, bd_addr_t addr, bd_size_t size);
+    virtual int program(const void *buffer, bd_addr_t addr, bd_size_t size);
+    virtual int erase(bd_addr_t addr, bd_size_t size);
+    virtual bd_size_t get_read_size() const;
+    virtual bd_size_t get_program_size() const;
+    virtual bd_size_t get_erase_size() const;
+    virtual bd_size_t size() const;
+    virtual const char *get_type() const;
+
+
+
+protected:
+    //From IUSBEnumerator
+    virtual void setVidPid(uint16_t vid, uint16_t pid);
+    virtual bool parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol); //Must return true if the interface should be parsed
+    virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used
+
+
+private:
+    USBHost * host;
+    USBDeviceConnected * dev;
+    bool dev_connected;
+    USBEndpoint * bulk_in;
+    USBEndpoint * bulk_out;
+    uint8_t nb_ep;
+
+    // Bulk-only CBW
+    typedef struct {
+        uint32_t Signature;
+        uint32_t Tag;
+        uint32_t DataLength;
+        uint8_t  Flags;
+        uint8_t  LUN;
+        uint8_t  CBLength;
+        uint8_t  CB[16];
+    } PACKED CBW;
+
+    // Bulk-only CSW
+    typedef struct {
+        uint32_t Signature;
+        uint32_t Tag;
+        uint32_t DataResidue;
+        uint8_t  Status;
+    } PACKED CSW;
+
+    CBW cbw;
+    CSW csw;
+
+    int SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len);
+    int testUnitReady();
+    int readCapacity();
+    int inquiry(uint8_t lun, uint8_t page_code);
+    int SCSIRequestSense();
+    int dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction);
+    int checkResult(uint8_t res, USBEndpoint * ep);
+    int getMaxLun();
+
+    int blockSize;
+    uint32_t blockCount;
+
+    int msd_intf;
+    bool msd_device_found;
+    bool disk_init;
+
+    void init_usb();
+
+};
+
+#endif
+
+#endif