Angel David Yaguana Hernandez
ok
Revision 0:8db2bcdf4574, committed 2012-08-24
- Comitter:
- sherckuith
- Date:
- Fri Aug 24 02:01:52 2012 +0000
- Commit message:
- [mbed] converted /USB_CDC_MSD_Hello/USBCDCMSC
Changed in this revision
| USBCDCMSC.cpp | Show annotated file Show diff for this revision Revisions of this file |
| USBCDCMSC.h | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/USBCDCMSC.cpp Fri Aug 24 02:01:52 2012 +0000
@@ -0,0 +1,881 @@
+/* Copyright (c) 2010-2011 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 "stdint.h"
+#include "USBCDCMSC.h"
+#include "USBBusInterface.h"
+
+static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
+
+#define DEFAULT_CONFIGURATION (1)
+
+#define CDC_SET_LINE_CODING 0x20
+#define CDC_GET_LINE_CODING 0x21
+#define CDC_SET_CONTROL_LINE_STATE 0x22
+#define CDC_SEND_BREAK 0x23
+
+#define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
+
+
+
+#define DISK_OK 0x00
+#define NO_INIT 0x01
+#define NO_DISK 0x02
+#define WRITE_PROTECT 0x04
+
+#define CBW_Signature 0x43425355
+#define CSW_Signature 0x53425355
+
+// SCSI Commands
+#define TEST_UNIT_READY 0x00
+#define REQUEST_SENSE 0x03
+#define FORMAT_UNIT 0x04
+#define INQUIRY 0x12
+#define MODE_SELECT6 0x15
+#define MODE_SENSE6 0x1A
+#define START_STOP_UNIT 0x1B
+#define MEDIA_REMOVAL 0x1E
+#define READ_FORMAT_CAPACITIES 0x23
+#define READ_CAPACITY 0x25
+#define READ10 0x28
+#define WRITE10 0x2A
+#define VERIFY10 0x2F
+#define READ12 0xA8
+#define WRITE12 0xAA
+#define MODE_SELECT10 0x55
+#define MODE_SENSE10 0x5A
+
+// MSC class specific requests
+#define MSC_REQUEST_RESET 0xFF
+#define MSC_REQUEST_GET_MAX_LUN 0xFE
+
+#define DEFAULT_CONFIGURATION (1)
+
+// max packet size
+#define MAX_PACKET MAX_PACKET_SIZE_EPBULK
+
+// CSW Status
+enum Status {
+ CSW_PASSED,
+ CSW_FAILED,
+ CSW_ERROR,
+};
+
+
+USBCDCMSC::USBCDCMSC(SDFileSystem *sd, uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release), cdcbuf(128), _sd(sd) {
+ cdcbreak = 0;
+ _status = NO_INIT;
+ connect();
+// USBDevice::connect();
+ USBHAL::connect();
+}
+
+bool USBCDCMSC::USBCallback_request(void) {
+ /* Called in ISR context */
+
+ bool success = false;
+ CONTROL_TRANSFER * transfer = getTransferPtr();
+ static uint8_t maxLUN[1] = {0};
+
+ /* Process class-specific requests */
+
+ if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
+ switch (transfer->setup.bRequest) {
+ case CDC_GET_LINE_CODING:
+ transfer->remaining = 7;
+ transfer->ptr = cdc_line_coding;
+ transfer->direction = DEVICE_TO_HOST;
+ success = true;
+ break;
+ case CDC_SET_LINE_CODING:
+ transfer->remaining = 7;
+ success = true;
+ break;
+ case CDC_SET_CONTROL_LINE_STATE:
+ success = true;
+ break;
+ case CDC_SEND_BREAK:
+ cdcbreak = 1;
+ success = true;
+ break;
+ case MSC_REQUEST_RESET:
+ reset();
+ success = true;
+ break;
+ case MSC_REQUEST_GET_MAX_LUN:
+ transfer->remaining = 1;
+ transfer->ptr = maxLUN;
+ transfer->direction = DEVICE_TO_HOST;
+ success = true;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return success;
+}
+
+
+// Called in ISR context
+// Set configuration. Return false if the
+// configuration is not supported.
+bool USBCDCMSC::USBCallback_setConfiguration(uint8_t configuration) {
+ if (configuration != DEFAULT_CONFIGURATION) {
+ return false;
+ }
+
+ // Configure endpoints > 0
+ addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
+ addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
+ addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+
+ // Configure endpoints > 0
+ addEndpoint(MSDBULK_IN, MAX_PACKET_SIZE_MSDBULK);
+ addEndpoint(MSDBULK_OUT, MAX_PACKET_SIZE_MSDBULK);
+
+ // We activate the endpoint to be able to recceive data
+ readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+
+ //activate readings
+ readStart(MSDBULK_OUT, MAX_PACKET_SIZE_MSDBULK);
+ return true;
+}
+
+bool USBCDCMSC::send(uint8_t * buffer, uint16_t size) {
+ return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE);
+}
+
+bool USBCDCMSC::readEP(uint8_t * buffer, uint16_t * size) {
+ if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
+ return false;
+ if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
+ return false;
+ return true;
+}
+
+bool USBCDCMSC::readEP_NB(uint8_t * buffer, uint16_t * size) {
+ if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
+ return false;
+ if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
+ return false;
+ return true;
+}
+
+
+uint8_t * USBCDCMSC::deviceDesc() {
+ static uint8_t deviceDescriptor[] = {
+ 18, // bLength
+ 1, // bDescriptorType
+ 0x10, 0x01, // bcdUSB
+ 0xef, // bDeviceClass
+ 0x02, // bDeviceSubClass
+ 0x01, // bDeviceProtocol
+ MAX_PACKET_SIZE_EP0, // bMaxPacketSize0
+ LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
+ LSB(PRODUCT_ID), MSB(PRODUCT_ID),// idProduct
+ 0x00, 0x01, // bcdDevice
+ 1, // iManufacturer
+ 2, // iProduct
+ 3, // iSerialNumber
+ 1 // bNumConfigurations
+ };
+ return deviceDescriptor;
+}
+
+uint8_t * USBCDCMSC::stringIinterfaceDesc() {
+ static uint8_t stringIinterfaceDescriptor[] = {
+ 0x0e,
+ STRING_DESCRIPTOR,
+ 'C',0,'D',0,'C',0,'M',0,'S',0,'C',0,
+ };
+ return stringIinterfaceDescriptor;
+}
+
+uint8_t * USBCDCMSC::stringIproductDesc() {
+ static uint8_t stringIproductDescriptor[] = {
+ 0x1c,
+ STRING_DESCRIPTOR,
+ 'C',0,'D',0,'C',0,'M',0,'S',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0
+ };
+ return stringIproductDescriptor;
+}
+
+
+uint8_t * USBCDCMSC::configurationDesc() {
+ static uint8_t configDescriptor[] = {
+ 9, // bLength;
+ 2, // bDescriptorType;
+ LSB(0x62), // wTotalLength
+ MSB(0x62),
+ 3, // bNumInterfaces
+ 1, // bConfigurationValue
+ 0, // iConfiguration
+ 0xc0, // bmAttributes
+ 50, // bMaxPower
+
+ // IAD
+// 0x08, 0x0B, 0x00, 0x02, 0x02, 0x00, 0x00, 0x00,
+ 0x08, 0x0B, 0x00, 0x02, 0x02, 0x02, 0x01, 0x00,
+
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ 0, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 1, // bNumEndpoints
+ 0x02, // bInterfaceClass
+ 0x02, // bInterfaceSubClass
+ 0x01, // bInterfaceProtocol
+ 0, // iInterface
+
+ // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x00, // bDescriptorSubtype
+ 0x10, 0x01, // bcdCDC
+
+ // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x01, // bDescriptorSubtype
+ 0x03, // bmCapabilities
+ 1, // bDataInterface
+
+ // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
+ 4, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x02, // bDescriptorSubtype
+ 0x06, // bmCapabilities
+
+ // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x06, // bDescriptorSubtype
+ 0, // bMasterInterface
+ 1, // bSlaveInterface0
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ ENDPOINT_DESCRIPTOR_LENGTH, // bLength
+ ENDPOINT_DESCRIPTOR, // bDescriptorType
+ PHY_TO_DESC(EPINT_IN), // bEndpointAddress
+ E_INTERRUPT, // bmAttributes (0x03=intr)
+ LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
+ 16, // bInterval
+
+
+
+
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ 1, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 2, // bNumEndpoints
+ 0x0A, // bInterfaceClass
+ 0x00, // bInterfaceSubClass
+ 0x00, // bInterfaceProtocol
+ 0, // iInterface
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ PHY_TO_DESC(EPBULK_IN), // bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB)
+ 0, // bInterval
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ PHY_TO_DESC(EPBULK_OUT),// bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB)
+ 0, // bInterval
+
+ // Interface 2, Alternate Setting 0, MSC Class
+ 9, // bLength
+ 4, // bDescriptorType
+ 0x02, // bInterfaceNumber
+ 0x00, // bAlternateSetting
+ 0x02, // bNumEndpoints
+ 0x08, // bInterfaceClass
+ 0x06, // bInterfaceSubClass
+ 0x50, // bInterfaceProtocol
+ 0x04, // iInterface
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ PHY_TO_DESC(MSDBULK_IN), // bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
+ 0, // bInterval
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ PHY_TO_DESC(MSDBULK_OUT), // bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
+ 0 // bInterval
+ };
+ return configDescriptor;
+}
+
+int USBCDCMSC::_putc(int c) {
+ send((uint8_t *)&c, 1);
+ return 1;
+}
+
+int USBCDCMSC::_getc() {
+ uint8_t c;
+ while (cdcbuf.isEmpty());
+ cdcbuf.dequeue(&c);
+ return c;
+}
+
+
+bool USBCDCMSC::writeBlock(uint8_t * buf, uint16_t size) {
+ if(size > MAX_PACKET_SIZE_EPBULK) {
+ return false;
+ }
+ if(!send(buf, size)) {
+ return false;
+ }
+ return true;
+}
+
+
+
+bool USBCDCMSC::EP2_OUT_callback() {
+ uint8_t c[65];
+ uint16_t size = 0;
+
+ //we read the packet received and put it on the circular buffer
+ readEP(c, &size);
+ for (int i = 0; i < size; i++) {
+ cdcbuf.queue(c[i]);
+ }
+
+ //call a potential handler
+ rx.call();
+
+ // We reactivate the endpoint to receive next characters
+ readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+ return true;
+}
+
+uint8_t USBCDCMSC::available() {
+ return cdcbuf.available();
+}
+
+
+bool USBCDCMSC::connect() {
+
+ //disk initialization
+ if (disk_status() & NO_INIT) {
+ if (disk_initialize()) {
+ return false;
+ }
+ }
+
+ // get number of blocks
+ BlockCount = disk_sectors();
+
+ // get memory size
+ MemorySize = disk_size();
+
+ if (BlockCount >= 0) {
+ BlockSize = MemorySize / BlockCount;
+ if (BlockSize != 0) {
+ page = (uint8_t *)malloc(BlockSize * sizeof(uint8_t));
+ if (page == NULL)
+ return false;
+ }
+ } else {
+ return false;
+ }
+
+ //connect the device
+// USBDevice::connect();
+ return true;
+}
+
+
+void USBCDCMSC::reset() {
+ stage = READ_CBW;
+}
+
+
+// Called in ISR context called when a data is received
+bool USBCDCMSC::EP5_OUT_callback() {
+ uint16_t size = 0;
+ uint8_t buf[MAX_PACKET_SIZE_EPBULK];
+ USBDevice::readEP(MSDBULK_OUT, buf, &size, MAX_PACKET_SIZE_EPBULK);
+ switch (stage) {
+ // the device has to decode the CBW received
+ case READ_CBW:
+ CBWDecode(buf, size);
+ break;
+
+ // the device has to receive data from the host
+ case PROCESS_CBW:
+ switch (cbw.CB[0]) {
+ case WRITE10:
+ case WRITE12:
+ memoryWrite(buf, size);
+ break;
+ case VERIFY10:
+ memoryVerify(buf, size);
+ break;
+ }
+ break;
+
+ // an error has occured: stall endpoint and send CSW
+ default:
+ stallEndpoint(MSDBULK_OUT);
+ csw.Status = CSW_ERROR;
+ sendCSW();
+ break;
+ }
+
+ //reactivate readings on the OUT bulk endpoint
+ readStart(MSDBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+ return true;
+}
+
+// Called in ISR context when a data has been transferred
+bool USBCDCMSC::EP5_IN_callback() {
+ switch (stage) {
+
+ // the device has to send data to the host
+ case PROCESS_CBW:
+ switch (cbw.CB[0]) {
+ case READ10:
+ case READ12:
+ memoryRead();
+ break;
+ }
+ break;
+
+ //the device has to send a CSW
+ case SEND_CSW:
+ sendCSW();
+ break;
+
+ // an error has occured
+ case ERROR:
+ stallEndpoint(MSDBULK_IN);
+ sendCSW();
+ break;
+
+ // the host has received the CSW -> we wait a CBW
+ case WAIT_CSW:
+ stage = READ_CBW;
+ break;
+ }
+ return true;
+}
+
+
+void USBCDCMSC::memoryWrite (uint8_t * buf, uint16_t size) {
+
+ if ((addr + size) > MemorySize) {
+ size = MemorySize - addr;
+ stage = ERROR;
+ stallEndpoint(MSDBULK_OUT);
+ }
+
+ // we fill an array in RAM of 1 block before writing it in memory
+ for (int i = 0; i < size; i++)
+ page[addr%BlockSize + i] = buf[i];
+
+ // if the array is filled, write it in memory
+ if (!((addr + size)%BlockSize)) {
+ if (!(disk_status() & WRITE_PROTECT)) {
+ disk_write((const char *)page, addr/BlockSize);
+ }
+ }
+
+ addr += size;
+ length -= size;
+ csw.DataResidue -= size;
+
+ if ((!length) || (stage != PROCESS_CBW)) {
+ csw.Status = (stage == ERROR) ? CSW_FAILED : CSW_PASSED;
+ sendCSW();
+ }
+}
+
+void USBCDCMSC::memoryVerify (uint8_t * buf, uint16_t size) {
+ uint32_t n;
+
+ if ((addr + size) > MemorySize) {
+ size = MemorySize - addr;
+ stage = ERROR;
+ stallEndpoint(MSDBULK_OUT);
+ }
+
+ // beginning of a new block -> load a whole block in RAM
+ if (!(addr%BlockSize))
+ disk_read((char *)page, addr/BlockSize);
+
+ // info are in RAM -> no need to re-read memory
+ for (n = 0; n < size; n++) {
+ if (page[addr%BlockSize + n] != buf[n]) {
+ memOK = false;
+ break;
+ }
+ }
+
+ addr += size;
+ length -= size;
+ csw.DataResidue -= size;
+
+ if ( !length || (stage != PROCESS_CBW)) {
+ csw.Status = (memOK && (stage == PROCESS_CBW)) ? CSW_PASSED : CSW_FAILED;
+ sendCSW();
+ }
+}
+
+
+bool USBCDCMSC::inquiryRequest (void) {
+ uint8_t inquiry[] = { 0x00, 0x80, 0x00, 0x01,
+ 36 - 4, 0x80, 0x00, 0x00,
+ 'M', 'B', 'E', 'D', '.', 'O', 'R', 'G',
+ 'M', 'B', 'E', 'D', ' ', 'U', 'S', 'B', ' ', 'D', 'I', 'S', 'K', ' ', ' ', ' ',
+ '1', '.', '0', ' ',
+ };
+ if (!msd_write(inquiry, sizeof(inquiry))) {
+ return false;
+ }
+ return true;
+}
+
+
+bool USBCDCMSC::readFormatCapacity() {
+ uint8_t capacity[] = { 0x00, 0x00, 0x00, 0x08,
+ (BlockCount >> 24) & 0xff,
+ (BlockCount >> 16) & 0xff,
+ (BlockCount >> 8) & 0xff,
+ (BlockCount >> 0) & 0xff,
+
+ 0x02,
+ (BlockSize >> 16) & 0xff,
+ (BlockSize >> 8) & 0xff,
+ (BlockSize >> 0) & 0xff,
+ };
+ if (!msd_write(capacity, sizeof(capacity))) {
+ return false;
+ }
+ return true;
+}
+
+
+bool USBCDCMSC::readCapacity (void) {
+ uint8_t capacity[] = {
+ ((BlockCount - 1) >> 24) & 0xff,
+ ((BlockCount - 1) >> 16) & 0xff,
+ ((BlockCount - 1) >> 8) & 0xff,
+ ((BlockCount - 1) >> 0) & 0xff,
+
+ (BlockSize >> 24) & 0xff,
+ (BlockSize >> 16) & 0xff,
+ (BlockSize >> 8) & 0xff,
+ (BlockSize >> 0) & 0xff,
+ };
+ if (!msd_write(capacity, sizeof(capacity))) {
+ return false;
+ }
+ return true;
+}
+
+bool USBCDCMSC::msd_write (uint8_t * buf, uint16_t size) {
+
+ if (size >= cbw.DataLength) {
+ size = cbw.DataLength;
+ }
+ stage = SEND_CSW;
+
+ if (!writeNB(MSDBULK_IN, buf, size, MAX_PACKET_SIZE_EPBULK)) {
+ return false;
+ }
+
+ csw.DataResidue -= size;
+ csw.Status = CSW_PASSED;
+ return true;
+}
+
+
+bool USBCDCMSC::modeSense6 (void) {
+ uint8_t sense6[] = { 0x03, 0x00, 0x00, 0x00 };
+ if (!msd_write(sense6, sizeof(sense6))) {
+ return false;
+ }
+ return true;
+}
+
+void USBCDCMSC::sendCSW() {
+ csw.Signature = CSW_Signature;
+ writeNB(MSDBULK_IN, (uint8_t *)&csw, sizeof(CSW), MAX_PACKET_SIZE_EPBULK);
+ stage = WAIT_CSW;
+}
+
+bool USBCDCMSC::requestSense (void) {
+ uint8_t request_sense[] = {
+ 0x70,
+ 0x00,
+ 0x05, // Sense Key: illegal request
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x0A,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x30,
+ 0x01,
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x00,
+ };
+
+ if (!msd_write(request_sense, sizeof(request_sense))) {
+ return false;
+ }
+
+ return true;
+}
+
+void USBCDCMSC::fail() {
+ csw.Status = CSW_FAILED;
+ sendCSW();
+}
+
+
+void USBCDCMSC::CBWDecode(uint8_t * buf, uint16_t size) {
+ if (size == sizeof(cbw)) {
+ memcpy((uint8_t *)&cbw, buf, size);
+ if (cbw.Signature == CBW_Signature) {
+ csw.Tag = cbw.Tag;
+ csw.DataResidue = cbw.DataLength;
+ if ((cbw.CBLength < 1) || (cbw.CBLength > 16) ) {
+ fail();
+ } else {
+ switch (cbw.CB[0]) {
+ case TEST_UNIT_READY:
+ testUnitReady();
+ break;
+ case REQUEST_SENSE:
+ requestSense();
+ break;
+ case INQUIRY:
+ inquiryRequest();
+ break;
+ case MODE_SENSE6:
+ modeSense6();
+ break;
+ case READ_FORMAT_CAPACITIES:
+ readFormatCapacity();
+ break;
+ case READ_CAPACITY:
+ readCapacity();
+ break;
+ case READ10:
+ case READ12:
+ if (infoTransfer()) {
+ if ((cbw.Flags & 0x80)) {
+ stage = PROCESS_CBW;
+ memoryRead();
+ } else {
+ stallEndpoint(MSDBULK_OUT);
+ csw.Status = CSW_ERROR;
+ sendCSW();
+ }
+ }
+ break;
+ case WRITE10:
+ case WRITE12:
+ if (infoTransfer()) {
+ if (!(cbw.Flags & 0x80)) {
+ stage = PROCESS_CBW;
+ } else {
+ stallEndpoint(MSDBULK_IN);
+ csw.Status = CSW_ERROR;
+ sendCSW();
+ }
+ }
+ break;
+ case VERIFY10:
+ if (!(cbw.CB[1] & 0x02)) {
+ csw.Status = CSW_PASSED;
+ sendCSW();
+ break;
+ }
+ if (infoTransfer()) {
+ if (!(cbw.Flags & 0x80)) {
+ stage = PROCESS_CBW;
+ memOK = true;
+ } else {
+ stallEndpoint(MSDBULK_IN);
+ csw.Status = CSW_ERROR;
+ sendCSW();
+ }
+ }
+ break;
+ default:
+ fail();
+ break;
+ }
+ }
+ }
+ }
+}
+
+void USBCDCMSC::testUnitReady (void) {
+
+ if (cbw.DataLength != 0) {
+ if ((cbw.Flags & 0x80) != 0) {
+ stallEndpoint(MSDBULK_IN);
+ } else {
+ stallEndpoint(MSDBULK_OUT);
+ }
+ }
+
+ csw.Status = CSW_PASSED;
+ sendCSW();
+}
+
+
+void USBCDCMSC::memoryRead (void) {
+ uint32_t n;
+
+ n = (length > MAX_PACKET) ? MAX_PACKET : length;
+
+ if ((addr + n) > MemorySize) {
+ n = MemorySize - addr;
+ stage = ERROR;
+ }
+
+ // we read an entire block
+ if (!(addr%BlockSize))
+ disk_read((char *)page, addr/BlockSize);
+
+ // write data which are in RAM
+ writeNB(MSDBULK_IN, &page[addr%BlockSize], n, MAX_PACKET_SIZE_EPBULK);
+
+ addr += n;
+ length -= n;
+
+ csw.DataResidue -= n;
+
+ if ( !length || (stage != PROCESS_CBW)) {
+ csw.Status = (stage == PROCESS_CBW) ? CSW_PASSED : CSW_FAILED;
+ stage = (stage == PROCESS_CBW) ? SEND_CSW : stage;
+ }
+}
+
+
+bool USBCDCMSC::infoTransfer (void) {
+ uint32_t n;
+
+ // Logical Block Address of First Block
+ n = (cbw.CB[2] << 24) | (cbw.CB[3] << 16) | (cbw.CB[4] << 8) | (cbw.CB[5] << 0);
+
+ addr = n * BlockSize;
+
+ // Number of Blocks to transfer
+ switch (cbw.CB[0]) {
+ case READ10:
+ case WRITE10:
+ case VERIFY10:
+ n = (cbw.CB[7] << 8) | (cbw.CB[8] << 0);
+ break;
+
+ case READ12:
+ case WRITE12:
+ n = (cbw.CB[6] << 24) | (cbw.CB[7] << 16) | (cbw.CB[8] << 8) | (cbw.CB[9] << 0);
+ break;
+ }
+
+ length = n * BlockSize;
+
+ if (!cbw.DataLength) { // host requests no data
+ csw.Status = CSW_FAILED;
+ sendCSW();
+ return false;
+ }
+
+ if (cbw.DataLength != length) {
+ if ((cbw.Flags & 0x80) != 0) {
+ stallEndpoint(MSDBULK_IN);
+ } else {
+ stallEndpoint(MSDBULK_OUT);
+ }
+
+ csw.Status = CSW_FAILED;
+ sendCSW();
+ return false;
+ }
+
+ return true;
+}
+
+int USBCDCMSC::isBreak () {
+ int ret = cdcbreak;
+ cdcbreak = 0;
+ return ret;
+}
+
+int USBCDCMSC::disk_initialize() {
+ if (_sd->disk_initialize()) {
+ _status |= NO_DISK;
+ return 1;
+ } else {
+ _status = DISK_OK;
+ return 0;
+ }
+}
+
+int USBCDCMSC::disk_write(const char *buffer, int block_number) {
+ return _sd->disk_write(buffer, block_number);
+}
+
+int USBCDCMSC::disk_read(char *buffer, int block_number) {
+ return _sd->disk_read(buffer, block_number);
+}
+
+int USBCDCMSC::disk_status() {
+ return _status;
+}
+
+int USBCDCMSC::disk_sectors() {
+ return _sd->disk_sectors();
+}
+int USBCDCMSC::disk_size() {
+ return _sd->disk_sectors() * 512;
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/USBCDCMSC.h Fri Aug 24 02:01:52 2012 +0000
@@ -0,0 +1,279 @@
+/* Copyright (c) 2010-2011 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.
+*/
+
+#ifndef USBCDCMSC_H
+#define USBCDCMSC_H
+
+/* These headers are included for child class. */
+#include "USBEndpoints.h"
+#include "USBDescriptor.h"
+#include "USBDevice_Types.h"
+
+#include "USBDevice.h"
+
+#include "Stream.h"
+#include "CircBuffer.h"
+
+#include "SDFileSystem.h"
+
+
+class USBCDCMSC: public USBDevice, public Stream {
+public:
+
+ /*
+ * Constructor
+ *
+ * @param vendor_id Your vendor_id
+ * @param product_id Your product_id
+ * @param product_release Your preoduct_release
+ */
+ USBCDCMSC(SDFileSystem *sd, uint16_t vendor_id = 0x1f00, uint16_t product_id = 0x2012, uint16_t product_release = 0x0001);
+
+ /**
+ * Send a character. You can use puts, printf.
+ *
+ * @param c character to be sent
+ * @returns true if there is no error, false otherwise
+ */
+ virtual int _putc(int c);
+
+ /**
+ * Read a character: blocking
+ *
+ * @returns character read
+ */
+ virtual int _getc();
+
+ /**
+ * Check the number of bytes available.
+ *
+ * @returns the number of bytes available
+ */
+ uint8_t available();
+
+ /**
+ * Write a block of data.
+ *
+ * For more efficiency, a block of size 64 (maximum size of a bulk endpoint) has to be written.
+ *
+ * @param buf pointer on data which will be written
+ * @param size size of the buffer. The maximum size of a block is limited by the size of the endpoint (64 bytes)
+ *
+ * @returns true if successfull
+ */
+ bool writeBlock(uint8_t * buf, uint16_t size);
+
+ /**
+ * Attach a member function to call when a packet is received.
+ *
+ * @param tptr pointer to the object to call the member function on
+ * @param mptr pointer to the member function to be called
+ */
+ template<typename T>
+ void attach(T* tptr, void (T::*mptr)(void)) {
+ if((mptr != NULL) && (tptr != NULL)) {
+ rx.attach(tptr, mptr);
+ }
+ }
+
+ /**
+ * Attach a callback called when a packet is received
+ *
+ * @param fptr function pointer
+ */
+ void attach(void (*fn)(void)) {
+ if(fn != NULL) {
+ rx.attach(fn);
+ }
+ }
+
+
+ /**
+ * Connect the USB MSD device. Establish disk initialization before really connect the device.
+ *
+ * @returns true if successful
+ */
+ bool connect();
+
+protected:
+
+ /*
+ * Get device descriptor. Warning: this method has to store the length of the report descriptor in reportLength.
+ *
+ * @returns pointer to the device descriptor
+ */
+ virtual uint8_t * deviceDesc();
+
+ /*
+ * Get string product descriptor
+ *
+ * @returns pointer to the string product descriptor
+ */
+ virtual uint8_t * stringIproductDesc();
+
+ /*
+ * Get string interface descriptor
+ *
+ * @returns pointer to the string interface descriptor
+ */
+ virtual uint8_t * stringIinterfaceDesc();
+
+ /*
+ * Get configuration descriptor
+ *
+ * @returns pointer to the configuration descriptor
+ */
+ virtual uint8_t * configurationDesc();
+
+ /*
+ * Send a buffer
+ *
+ * @param endpoint endpoint which will be sent the buffer
+ * @param buffer buffer to be sent
+ * @param size length of the buffer
+ * @returns true if successful
+ */
+ bool send(uint8_t * buffer, uint16_t size);
+
+ /*
+ * Read a buffer from a certain endpoint. Warning: blocking
+ *
+ * @param endpoint endpoint to read
+ * @param buffer buffer where will be stored bytes
+ * @param size the number of bytes read will be stored in *size
+ * @param maxSize the maximum length that can be read
+ * @returns true if successful
+ */
+ bool readEP(uint8_t * buffer, uint16_t * size);
+
+ /*
+ * Read a buffer from a certain endpoint. Warning: non blocking
+ *
+ * @param endpoint endpoint to read
+ * @param buffer buffer where will be stored bytes
+ * @param size the number of bytes read will be stored in *size
+ * @param maxSize the maximum length that can be read
+ * @returns true if successful
+ */
+ bool readEP_NB(uint8_t * buffer, uint16_t * size);
+
+ virtual bool USBCallback_request();
+ virtual bool USBCallback_setConfiguration(uint8_t configuration);
+
+ virtual bool EP2_OUT_callback();
+
+ /*
+ * Callback called when a packet is received
+ */
+ virtual bool EP5_OUT_callback();
+
+ /*
+ * Callback called when a packet has been sent
+ */
+ virtual bool EP5_IN_callback();
+
+private:
+
+ FunctionPointer rx;
+ CircBuffer<uint8_t> cdcbuf;
+ int cdcbreak;
+
+ // MSC Bulk-only Stage
+ enum Stage {
+ READ_CBW, // wait a CBW
+ ERROR, // error
+ PROCESS_CBW, // process a CBW request
+ SEND_CSW, // send a CSW
+ WAIT_CSW, // wait that a CSW has been effectively sent
+ };
+
+ // 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;
+
+ //state of the bulk-only state machine
+ Stage stage;
+
+ // current CBW
+ CBW cbw;
+
+ // CSW which will be sent
+ CSW csw;
+
+ // addr where will be read or written data
+ uint32_t addr;
+
+ // length of a reading or writing
+ uint32_t length;
+
+ // memory OK (after a memoryVerify)
+ bool memOK;
+
+ // cache in RAM before writing in memory. Useful also to read a block.
+ uint8_t * page;
+
+ int BlockSize;
+ int MemorySize;
+ int BlockCount;
+
+ int _status;
+ SDFileSystem *_sd;
+
+ void CBWDecode(uint8_t * buf, uint16_t size);
+ void sendCSW (void);
+ bool inquiryRequest (void);
+ bool msd_write (uint8_t * buf, uint16_t size);
+ bool readFormatCapacity();
+ bool readCapacity (void);
+ bool infoTransfer (void);
+ void memoryRead (void);
+ bool modeSense6 (void);
+ void testUnitReady (void);
+ bool requestSense (void);
+ void memoryVerify (uint8_t * buf, uint16_t size);
+ void memoryWrite (uint8_t * buf, uint16_t size);
+ void reset();
+ void fail();
+
+ int isBreak();
+
+ int disk_initialize();
+ int disk_write(const char *buffer, int block_number);
+ int disk_read(char *buffer, int block_number);
+ int disk_status();
+ int disk_sectors();
+ int disk_size();
+
+};
+
+#endif