USBHOST lib for STM
Dependents: door-access-controller-dev
USBHostMSD.h
00001 /* mbed USBHost Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00017 #ifndef USBHOSTMSD_H 00018 #define USBHOSTMSD_H 00019 00020 #include "USBHostConf.h" 00021 00022 #if USBHOST_MSD 00023 00024 #include "USBHost.h" 00025 #include "FATFileSystem.h" 00026 #include "BlockDevice.h" 00027 00028 /** 00029 * A class to communicate a USB flash disk 00030 */ 00031 class USBHostMSD : public IUSBEnumerator, public BlockDevice 00032 { 00033 public: 00034 /** 00035 * Constructor 00036 * 00037 * @param rootdir mount name 00038 */ 00039 USBHostMSD(); 00040 00041 /** 00042 * Check if a MSD device is connected 00043 * 00044 * @return true if a MSD device is connected 00045 */ 00046 bool connected(); 00047 00048 /** 00049 * Try to connect to a MSD device 00050 * 00051 * @return true if connection was successful 00052 */ 00053 bool connect(); 00054 virtual int init(); 00055 virtual int deinit() 00056 { 00057 return BD_ERROR_OK; 00058 }; 00059 virtual int read(void *buffer, bd_addr_t addr, bd_size_t size); 00060 virtual int program(const void *buffer, bd_addr_t addr, bd_size_t size); 00061 virtual int erase(bd_addr_t addr, bd_size_t size); 00062 virtual bd_size_t get_read_size() const; 00063 virtual bd_size_t get_program_size() const; 00064 virtual bd_size_t get_erase_size() const; 00065 virtual bd_size_t size() const; 00066 00067 00068 00069 protected: 00070 //From IUSBEnumerator 00071 virtual void setVidPid(uint16_t vid, uint16_t pid); 00072 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 00073 virtual bool useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir); //Must return true if the endpoint will be used 00074 00075 00076 private: 00077 USBHost * host; 00078 USBDeviceConnected * dev; 00079 bool dev_connected; 00080 USBEndpoint * bulk_in; 00081 USBEndpoint * bulk_out; 00082 uint8_t nb_ep; 00083 00084 // Bulk-only CBW 00085 typedef struct { 00086 uint32_t Signature; 00087 uint32_t Tag; 00088 uint32_t DataLength; 00089 uint8_t Flags; 00090 uint8_t LUN; 00091 uint8_t CBLength; 00092 uint8_t CB[16]; 00093 } PACKED CBW; 00094 00095 // Bulk-only CSW 00096 typedef struct { 00097 uint32_t Signature; 00098 uint32_t Tag; 00099 uint32_t DataResidue; 00100 uint8_t Status; 00101 } PACKED CSW; 00102 00103 CBW cbw; 00104 CSW csw; 00105 00106 int SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len); 00107 int testUnitReady(); 00108 int readCapacity(); 00109 int inquiry(uint8_t lun, uint8_t page_code); 00110 int SCSIRequestSense(); 00111 int dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction); 00112 int checkResult(uint8_t res, USBEndpoint * ep); 00113 int getMaxLun(); 00114 00115 int blockSize; 00116 uint32_t blockCount; 00117 00118 int msd_intf; 00119 bool msd_device_found; 00120 bool disk_init; 00121 00122 void init_usb(); 00123 00124 }; 00125 00126 #endif 00127 00128 #endif
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