USBHost custom library.
Dependents: GR-PEACH_HVC-P2_sample_client mbed-os-storage-access GR-PEACH_Digital_Signage GR-PEACH_Audio_Playback_Sample ... more
Fork of USBHost by
USBHostMSD/USBHostMSD.h
- Committer:
- dkato
- Date:
- 2017-03-17
- Revision:
- 40:cdc0d2ab4678
- Parent:
- 39:4a7c5479dc23
File content as of revision 40:cdc0d2ab4678:
/* 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 "BlockDevice.h" /** * A class to communicate a USB flash disk */ class USBHostMSD : public IUSBEnumerator, public BlockDevice { public: /** * Constructor * * @param rootdir mount name */ USBHostMSD(); virtual ~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(); /** Initialize a block device * * @return 0 on success or a negative error code on failure */ virtual int init(); /** Deinitialize a block device * * @return 0 on success or a negative error code on failure */ virtual int deinit(); /** Read blocks from a block device * * @param buffer Buffer to write blocks to * @param addr Address of block to begin reading from * @param size Size to read in bytes, must be a multiple of read block size * @return 0 on success, negative error code on failure */ virtual int read(void *buffer, bd_addr_t addr, bd_size_t size); /** Program blocks to a block device * * The blocks must have been erased prior to being programmed * * @param buffer Buffer of data to write to blocks * @param addr Address of block to begin writing to * @param size Size to write in bytes, must be a multiple of program block size * @return 0 on success, negative error code on failure */ virtual int program(const void *buffer, bd_addr_t addr, bd_size_t size); /** Erase blocks on a block device * * The state of an erased block is undefined until it has been programmed * * @param addr Address of block to begin erasing * @param size Size to erase in bytes, must be a multiple of erase block size * @return 0 on success, negative error code on failure */ virtual int erase(bd_addr_t addr, bd_size_t size); /** Get the size of a readable block * * @return Size of a readable block in bytes */ virtual bd_size_t get_read_size() const; /** Get the size of a programable block * * @return Size of a programable block in bytes * @note Must be a multiple of the read size */ virtual bd_size_t get_program_size() const; /** Get the size of a eraseable block * * @return Size of a eraseable block in bytes * @note Must be a multiple of the program size */ virtual bd_size_t get_erase_size() const; /** Get the total size of the underlying device * * @return Size of the underlying device in bytes */ virtual bd_size_t size() const; /** Enable or disable debugging * * @param State of debugging */ virtual void debug(bool dbg); 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; Mutex _lock; 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 _is_initialized; void msd_init(); }; #endif #endif