Adaptation of the official mbed USBHost repository to work with the LPC4088 Display Module
Dependents: DMSupport DMSupport DMSupport DMSupport
Fork of DM_USBHost by
USBHostMSD/USBHostMSD.cpp
- Committer:
- samux
- Date:
- 2013-03-12
- Revision:
- 4:b320d68e98e7
- Parent:
- 0:a554658735bf
- Child:
- 5:e48791a1ef18
File content as of revision 4:b320d68e98e7:
/* Copyright (c) 2010-2012 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "USBHostMSD.h" #if USBHOST_MSD #include "dbg.h" #define CBW_SIGNATURE 0x43425355 #define CSW_SIGNATURE 0x53425355 #define DEVICE_TO_HOST 0x80 #define HOST_TO_DEVICE 0x00 #define GET_MAX_LUN (0xFE) #define BO_MASS_STORAGE_RESET (0xFF) USBHostMSD::USBHostMSD(const char * rootdir) : FATFileSystem(rootdir) { host = USBHost::getHostInst(); init(); } void USBHostMSD::init() { dev_connected = false; dev = NULL; bulk_in = NULL; bulk_out = NULL; dev_connected = false; blockSize = 0; blockCount = 0; msd_intf = -1; msd_device_found = false; disk_init = false; dev_connected = false; nb_ep = 0; } bool USBHostMSD::connected() { return dev_connected; } bool USBHostMSD::connect() { U8 i; if (dev_connected) { return true; } for (i = 0; i < MAX_DEVICE_CONNECTED; i++) { if ((dev = host->getDevice(i)) != NULL) { USB_DBG("Trying to connect MSD device\r\n"); if(host->enumerate(dev, this)) break; if (msd_device_found) { bulk_in = dev->getEndpoint(msd_intf, BULK_ENDPOINT, IN); bulk_out = dev->getEndpoint(msd_intf, BULK_ENDPOINT, OUT); if (!bulk_in || !bulk_out) continue; USB_INFO("New MSD device: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, msd_intf); dev->setName("MSD", msd_intf); host->registerDriver(dev, msd_intf, this, &USBHostMSD::init); dev_connected = true; return true; } } //if() } //for() init(); return false; } /*virtual*/ void USBHostMSD::setVidPid(uint16_t vid, uint16_t pid) { // we don't check VID/PID for MSD driver } /*virtual*/ bool USBHostMSD::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 { if ((msd_intf == -1) && (intf_class == MSD_CLASS) && (intf_subclass == 0x06) && (intf_protocol == 0x50)) { msd_intf = intf_nb; return true; } return false; } /*virtual*/ bool USBHostMSD::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used { if (intf_nb == msd_intf) { if (type == BULK_ENDPOINT) { nb_ep++; if (nb_ep == 2) msd_device_found = true; return true; } } return false; } int USBHostMSD::testUnitReady() { USB_DBG("Test unit ready"); return SCSITransfer(NULL, 6, DEVICE_TO_HOST, 0, 0); } int USBHostMSD::readCapacity() { USB_DBG("Read capacity"); uint8_t cmd[10] = {0x25,0,0,0,0,0,0,0,0,0}; uint8_t result[8]; int status = SCSITransfer(cmd, 10, DEVICE_TO_HOST, result, 8); if (status == 0) { blockCount = (result[0] << 24) | (result[1] << 16) | (result[2] << 8) | result[3]; blockSize = (result[4] << 24) | (result[5] << 16) | (result[6] << 8) | result[7]; USB_INFO("MSD [dev: %p] - blockCount: %lld, blockSize: %d, Capacity: %lld\r\n", dev, blockCount, blockSize, blockCount*blockSize); } return status; } int USBHostMSD::SCSIRequestSense() { USB_DBG("Request sense"); uint8_t cmd[6] = {0x03,0,0,0,18,0}; uint8_t result[18]; int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 18); return status; } int USBHostMSD::inquiry(uint8_t lun, uint8_t page_code) { USB_DBG("Inquiry"); uint8_t evpd = (page_code == 0) ? 0 : 1; uint8_t cmd[6] = {0x12, (lun << 5) | evpd, page_code, 0, 36, 0}; uint8_t result[36]; int status = SCSITransfer(cmd, 6, DEVICE_TO_HOST, result, 36); if (status == 0) { char vid_pid[17]; memcpy(vid_pid, &result[8], 8); vid_pid[8] = 0; USB_INFO("MSD [dev: %p] - Vendor ID: %s", dev, vid_pid); memcpy(vid_pid, &result[16], 16); vid_pid[16] = 0; USB_INFO("MSD [dev: %p] - Product ID: %s", dev, vid_pid); memcpy(vid_pid, &result[32], 4); vid_pid[4] = 0; USB_INFO("MSD [dev: %p] - Product rev: %s", dev, vid_pid); } return status; } int USBHostMSD::checkResult(uint8_t res, USBEndpoint * ep) { // if ep stalled: send clear feature if (res == USB_TYPE_STALL_ERROR) { res = host->controlWrite( dev, USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD, CLEAR_FEATURE, 0, ep->getAddress(), NULL, 0); // set state to IDLE if clear feature successful if (res == USB_TYPE_OK) { ep->setState(USB_TYPE_IDLE); } } if (res != USB_TYPE_OK) return -1; return 0; } int USBHostMSD::SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len) { int res = 0; cbw.Signature = CBW_SIGNATURE; cbw.Tag = 0; cbw.DataLength = transfer_len; cbw.Flags = flags; cbw.LUN = 0; cbw.CBLength = cmd_len; memset(cbw.CB,0,sizeof(cbw.CB)); if (cmd) { memcpy(cbw.CB,cmd,cmd_len); } // send the cbw USB_DBG("Send CBW"); res = host->bulkWrite(dev, bulk_out,(uint8_t *)&cbw, 31); if (checkResult(res, bulk_out)) return -1; // data stage if needed if (data) { USB_DBG("data stage"); if (flags == HOST_TO_DEVICE) { res = host->bulkWrite(dev, bulk_out, data, transfer_len); if (checkResult(res, bulk_out)) return -1; } else if (flags == DEVICE_TO_HOST) { res = host->bulkRead(dev, bulk_in, data, transfer_len); if (checkResult(res, bulk_in)) return -1; } } // status stage csw.Signature = 0; USB_DBG("Read CSW"); res = host->bulkRead(dev, bulk_in,(uint8_t *)&csw, 13); if (checkResult(res, bulk_in)) return -1; if (csw.Signature != CSW_SIGNATURE) { return -1; } USB_DBG("recv csw: status: %d", csw.Status); // ModeSense? if ((csw.Status == 1) && (cmd[0] != 0x03)) { USB_DBG("request mode sense"); return SCSIRequestSense(); } // perform reset recovery if ((csw.Status == 2) && (cmd[0] != 0x03)) { // send Bulk-Only Mass Storage Reset request res = host->controlWrite( dev, USB_RECIPIENT_INTERFACE | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS, BO_MASS_STORAGE_RESET, 0, msd_intf, NULL, 0); // unstall both endpoints res = host->controlWrite( dev, USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD, CLEAR_FEATURE, 0, bulk_in->getAddress(), NULL, 0); res = host->controlWrite( dev, USB_RECIPIENT_ENDPOINT | USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_STANDARD, CLEAR_FEATURE, 0, bulk_out->getAddress(), NULL, 0); } return csw.Status; } int USBHostMSD::dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction) { uint8_t cmd[10]; memset(cmd,0,10); cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A; cmd[2] = (block >> 24) & 0xff; cmd[3] = (block >> 16) & 0xff; cmd[4] = (block >> 8) & 0xff; cmd[5] = block & 0xff; cmd[7] = (nbBlock >> 8) & 0xff; cmd[8] = nbBlock & 0xff; return SCSITransfer(cmd, 10, direction, buf, blockSize*nbBlock); } int USBHostMSD::getMaxLun() { uint8_t buf[1], res; res = host->controlRead( dev, USB_RECIPIENT_INTERFACE | USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS, 0xfe, 0, msd_intf, buf, 1); USB_DBG("max lun: %d", buf[0]); return res; } int USBHostMSD::disk_initialize() { USB_DBG("FILESYSTEM: init"); U16 i, timeout = 10; getMaxLun(); for (i = 0; i < timeout; i++) { Thread::wait(100); if (!testUnitReady()) break; } if (i == timeout) { disk_init = false; return -1; } inquiry(0, 0); disk_init = 1; return readCapacity(); } int USBHostMSD::disk_write(const uint8_t *buffer, uint64_t block_number) { USB_DBG("FILESYSTEM: write block: %lld", block_number); if (!disk_init) { disk_initialize(); } if (!disk_init) return -1; return dataTransfer((uint8_t *)buffer, block_number, 1, HOST_TO_DEVICE); } int USBHostMSD::disk_read(uint8_t * buffer, uint64_t block_number) { USB_DBG("FILESYSTEM: read block %lld", block_number); if (!disk_init) { disk_initialize(); } if (!disk_init) return -1; return dataTransfer((uint8_t *)buffer, block_number, 1, DEVICE_TO_HOST); } uint64_t USBHostMSD::disk_sectors() { USB_DBG("FILESYSTEM: sectors"); if (!disk_init) { disk_initialize(); } if (!disk_init) return 0; return blockCount; } #endif