Diff: USBHostMSD.h

Revision:

1:c072d9e580b0

Child:

2:0cdac6bcc534

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHostMSD.h	Tue Jan 21 08:59:28 2014 +0000
@@ -0,0 +1,191 @@
+/* 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
+
+#if 0
+#define USB_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0);
+#else
+#define USB_DBG(...)  while(0);
+#endif
+
+#define USB_DBG2(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0);
+
+#if 1
+#define USB_INFO(...) do{fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");}while(0);
+#else
+#define USB_INFO(...)  while(0);
+#endif
+
+//#include "USBHostConf.h"
+enum USB_TYPE {
+    USB_TYPE_OK = 0,
+    // completion code
+    USB_TYPE_STALL_ERROR = 4,
+    // general usb state
+    USB_TYPE_IDLE = 16,
+    USB_TYPE_ERROR = 18,
+};
+
+//  ----------- Control RequestType Fields  ----------- 
+#define  USB_DEVICE_TO_HOST         0x80
+#define  USB_HOST_TO_DEVICE         0x00
+#define  USB_REQUEST_TYPE_CLASS     0x20
+#define  USB_REQUEST_TYPE_STANDARD  0x00
+#define  USB_RECIPIENT_DEVICE       0x00
+#define  USB_RECIPIENT_INTERFACE    0x01
+#define  USB_RECIPIENT_ENDPOINT     0x02
+
+// -------------- USB Standard Requests  --------------
+#define  CLEAR_FEATURE              0x01
+
+#include "USBHost.h"
+#include "FATFileSystem.h"
+
+class USBDeviceConnected { //dummy
+};
+
+struct USBEndpoint { // dummy
+    void setState(uint8_t st){};
+    uint8_t getAddress(){ return 0; };
+};
+
+/** 
+ * A class to communicate a USB flash disk
+ */
+class USBHostMSD : public FATFileSystem {
+public:
+    /**
+    * Constructor
+    *
+    * @param rootdir mount name
+    */
+    USBHostMSD(const char * rootdir);
+
+    /**
+    * 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();
+
+protected:
+
+    // From FATFileSystem
+    virtual int disk_initialize();
+    virtual int disk_status() {return 0;};
+    virtual int disk_read(uint8_t * buffer, uint64_t sector);
+    virtual int disk_write(const uint8_t * buffer, uint64_t sector);
+    virtual int disk_sync() {return 0;};
+    virtual uint64_t disk_sectors();
+
+private:
+    USBHost * host;
+    USBDeviceConnected * dev;
+    bool dev_connected;
+    USBEndpoint * bulk_in;
+    USBEndpoint * bulk_out;
+    uint8_t nb_ep;
+
+    // Bulk-only CBW
+    typedef __packed struct {
+        uint32_t Signature;
+        uint32_t Tag;
+        uint32_t DataLength;
+        uint8_t  Flags;
+        uint8_t  LUN;
+        uint8_t  CBLength;
+        uint8_t  CB[16];
+    } CBW;
+
+    // Bulk-only CSW
+    typedef __packed struct {
+        uint32_t Signature;
+        uint32_t Tag;
+        uint32_t DataResidue;
+        uint8_t  Status;
+    } 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;
+    uint64_t blockCount;
+
+    int msd_intf;
+    bool msd_device_found;
+    bool disk_init;
+    
+    void init();
+
+    // KL46Z-USBHost interface
+    USB_TYPE controlRead(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
+        SETUP_PACKET setup = {requestType, request, value, index};
+        int result = host->ControlRead(&setup, buf, len);
+        USB_DBG2("result=%d %02x", result, host->LastStatus);
+        return (result >= 0) ? USB_TYPE_OK : USB_TYPE_ERROR;
+    }
+
+    USB_TYPE controlWrite(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
+        SETUP_PACKET setup = {requestType, request, value, index};
+        int result = host->ControlWrite(&setup, buf, len);
+        USB_DBG2("result=%d %02x", result, host->LastStatus);
+        return (result >= 0) ? USB_TYPE_OK : USB_TYPE_ERROR;
+    }
+    
+    USB_TYPE bulkRead(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking = true) {
+        for(int retry = 2; retry > 0; retry--) {
+            int result = host->BulkRead(buf, len);
+            if (result >= 0) {
+                return USB_TYPE_OK;
+            }
+            USB_DBG2("result=%d %02x", result, host->LastStatus);
+            if (host->LastStatus != Bus_Timeout) {
+                break;
+            }
+            wait_ms(10);
+        }
+        return USB_TYPE_ERROR;
+    }
+    
+    USB_TYPE bulkWrite(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking = true) {
+        int result = host->BulkWrite(buf, len);
+        if (result >= 0) {
+            return USB_TYPE_OK;
+        }
+        USB_DBG2("result=%d %02x", result, host->LastStatus);
+        return USB_TYPE_ERROR;
+    }
+};
+
+#endif