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Code to control a Traxster robot using a Wimote and Android app
Fork of BlueUSB by
Diff: MassStorage.cpp
- Revision:
- 1:accdaa84fe8d
- Parent:
- 0:606b230e5b4a
--- a/MassStorage.cpp Sat Apr 10 00:30:24 2010 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,180 +0,0 @@ - -/* -Copyright (c) 2010 Peter Barrett - -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 "stdlib.h" -#include "stdio.h" -#include "string.h" - -#include "Utils.h" -#include "USBHost.h" - - -int MassStorage_ReadCapacity(int device, u32* blockCount, u32* blockSize); -int MassStorage_ReadBlock(int device, u32 block, u8* dst); -int MassStorage_WriteBlock(int device, u32 block, const u8* dst); - - -#define ERR_BAD_CSW_SIGNATURE -200 - -#define CBW_SIGNATURE 0x43425355 -#define CSW_SIGNATURE 0x53425355 - -// Command Block -typedef struct -{ - u32 Signature; - u32 Tag; - u32 TransferLength; - u8 Flags; - u8 LUN; - u8 CBLength; - u8 CB[16]; // only 6 really -} CBW; - -// Status block -typedef struct -{ - u32 Signature; - u32 Tag; - u32 DataResidue; - u8 Status; -} CSW; - -int SCSIRequestSense(int device); - -int DoSCSI(int device, const u8* cmd, int cmdLen, int flags, u8* data, u32 transferLen) -{ - CBW cbw; - cbw.Signature = CBW_SIGNATURE; - cbw.Tag = 0; - cbw.TransferLength = transferLen; - cbw.Flags = flags; - cbw.LUN = 0; - cbw.CBLength = cmdLen; - memset(cbw.CB,0,sizeof(cbw.CB)); - memcpy(cbw.CB,cmd,cmdLen); - - int r; - r = USBBulkTransfer(device,0x01,(u8*)&cbw,31); // Send the command - if (r < 0) - return r; - - if (data) - { - r = USBBulkTransfer(device,flags | 1,data,transferLen); - if (r < 0) - return r; - } - - CSW csw; - csw.Signature = 0; - r = USBBulkTransfer(device,0x81,(u8*)&csw,13); - if (r < 0) - return r; - - if (csw.Signature != CSW_SIGNATURE) - return ERR_BAD_CSW_SIGNATURE; - - // ModeSense? - if (csw.Status == 1 && cmd[0] != 3) - return SCSIRequestSense(device); - - return csw.Status; -} - -int SCSITestUnitReady(int device) -{ - u8 cmd[6]; - memset(cmd,0,6); - return DoSCSI(device,cmd,6,DEVICE_TO_HOST,0,0); -} - -int SCSIRequestSense(int device) -{ - u8 cmd[6] = {0x03,0,0,0,18,0}; - u8 result[18]; - int r = DoSCSI(device,cmd,6,DEVICE_TO_HOST,result,18); - return r; -} - -int SCSIInquiry(int device) -{ - u8 cmd[6] = {0x12,0,0,0,36,0}; - u8 result[36+2]; - result[36] = '\n'; - result[37] = 0; - int r = DoSCSI(device,cmd,6,DEVICE_TO_HOST,result,36); - if (r == 0) - printf((const char*)result + 8); - return r; -} - -int SCSIReadCapacity(int device, u32* blockCount, u32* blockSize) -{ - u8 cmd[10] = {0x25,0,0,0,8,0,0,0,0,0}; - u8 result[8]; - *blockSize = 0; - *blockCount = 0; - int r = DoSCSI(device,cmd,10,DEVICE_TO_HOST,result,8); - if (r == 0) - { - *blockCount = BE32(result); - *blockSize = BE32(result+4); - } - return r; -} - -int SCSITransfer(int device, u32 blockAddr, u32 blockCount, u8* dst, u32 blockSize, int direction) -{ - // USB hardware will only do 4k per transfer - while (blockCount*blockSize > 4096) - { - int count = 4096/blockSize; - int r = SCSITransfer(device,blockAddr,count,dst,blockSize,direction); - dst += count*blockSize; - blockAddr += count; - blockCount -= count; - } - - u8 cmd[10]; - memset(cmd,0,10); - cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A; - BE32(blockAddr,cmd+2); - BE16(blockCount,cmd+7); - return DoSCSI(device,cmd,10,direction,dst,blockSize*blockCount); -} - -int MassStorage_ReadCapacity(int device, u32* blockCount, u32* blockSize) -{ - return SCSIReadCapacity(device,blockCount,blockSize); -} - -int MassStorage_Read(int device, u32 blockAddr, u32 blockCount, u8* dst, u32 blockSize = 512) -{ - return SCSITransfer(device,blockAddr,blockCount,dst,blockSize,DEVICE_TO_HOST); -} - -int MassStorage_Write(int device, u32 blockAddr, u32 blockCount, u8* dst, u32 blockSize = 512) -{ - return SCSITransfer(device,blockAddr,blockCount,dst,blockSize,HOST_TO_DEVICE); -}