Almost identical to USBHostShell; reads all endpoint descriptors
Dependents: myBlueUSB mbed_TANK_Kinect myBlueUSB_ros myBlueUSB_localfix
MassStorage.h@3:58c785c2b381, 2011-07-01 (annotated)
- Committer:
- networker
- Date:
- Fri Jul 01 09:13:39 2011 +0000
- Revision:
- 3:58c785c2b381
revised massStorage to cope with different endpoint addresses
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
networker | 3:58c785c2b381 | 1 | #ifndef MASSSTORAGE_H |
networker | 3:58c785c2b381 | 2 | #define MASSSTORAGE_H |
networker | 3:58c785c2b381 | 3 | |
networker | 3:58c785c2b381 | 4 | #include "Utils.h" |
networker | 3:58c785c2b381 | 5 | #include "USBHost.h" |
networker | 3:58c785c2b381 | 6 | |
networker | 3:58c785c2b381 | 7 | |
networker | 3:58c785c2b381 | 8 | #define ERR_BAD_CSW_SIGNATURE -200 |
networker | 3:58c785c2b381 | 9 | |
networker | 3:58c785c2b381 | 10 | #define CBW_SIGNATURE 0x43425355 |
networker | 3:58c785c2b381 | 11 | #define CSW_SIGNATURE 0x53425355 |
networker | 3:58c785c2b381 | 12 | |
networker | 3:58c785c2b381 | 13 | #define BULK_ENDPOINT_IN 0x81 |
networker | 3:58c785c2b381 | 14 | #define BULK_ENDPOINT_OUT 0x02 |
networker | 3:58c785c2b381 | 15 | |
networker | 3:58c785c2b381 | 16 | // Command Block |
networker | 3:58c785c2b381 | 17 | typedef struct { |
networker | 3:58c785c2b381 | 18 | u32 Signature; |
networker | 3:58c785c2b381 | 19 | u32 Tag; |
networker | 3:58c785c2b381 | 20 | u32 TransferLength; |
networker | 3:58c785c2b381 | 21 | u8 Flags; |
networker | 3:58c785c2b381 | 22 | u8 LUN; |
networker | 3:58c785c2b381 | 23 | u8 CBLength; |
networker | 3:58c785c2b381 | 24 | u8 CB[16]; // only 6 really |
networker | 3:58c785c2b381 | 25 | } CBW; |
networker | 3:58c785c2b381 | 26 | |
networker | 3:58c785c2b381 | 27 | // Status block |
networker | 3:58c785c2b381 | 28 | typedef struct { |
networker | 3:58c785c2b381 | 29 | u32 Signature; |
networker | 3:58c785c2b381 | 30 | u32 Tag; |
networker | 3:58c785c2b381 | 31 | u32 DataResidue; |
networker | 3:58c785c2b381 | 32 | u8 Status; |
networker | 3:58c785c2b381 | 33 | } CSW; |
networker | 3:58c785c2b381 | 34 | |
networker | 3:58c785c2b381 | 35 | class USBSCSI { |
networker | 3:58c785c2b381 | 36 | protected: |
networker | 3:58c785c2b381 | 37 | int _device; |
networker | 3:58c785c2b381 | 38 | unsigned char epin, epout; |
networker | 3:58c785c2b381 | 39 | public: |
networker | 3:58c785c2b381 | 40 | USBSCSI() : _device(0) {} |
networker | 3:58c785c2b381 | 41 | |
networker | 3:58c785c2b381 | 42 | void SetDevice(int device, unsigned char in, unsigned char out) |
networker | 3:58c785c2b381 | 43 | { |
networker | 3:58c785c2b381 | 44 | _device = device; |
networker | 3:58c785c2b381 | 45 | epin = in; |
networker | 3:58c785c2b381 | 46 | epout = out; |
networker | 3:58c785c2b381 | 47 | } |
networker | 3:58c785c2b381 | 48 | protected: |
networker | 3:58c785c2b381 | 49 | int DoSCSI(const u8* cmd, int cmdLen, int flags, u8* data, u32 transferLen) { |
networker | 3:58c785c2b381 | 50 | CBW cbw; |
networker | 3:58c785c2b381 | 51 | cbw.Signature = CBW_SIGNATURE; |
networker | 3:58c785c2b381 | 52 | cbw.Tag = 0; |
networker | 3:58c785c2b381 | 53 | cbw.TransferLength = transferLen; |
networker | 3:58c785c2b381 | 54 | cbw.Flags = flags; |
networker | 3:58c785c2b381 | 55 | cbw.LUN = 0; |
networker | 3:58c785c2b381 | 56 | cbw.CBLength = cmdLen; |
networker | 3:58c785c2b381 | 57 | memset(cbw.CB,0,sizeof(cbw.CB)); |
networker | 3:58c785c2b381 | 58 | memcpy(cbw.CB,cmd,cmdLen); |
networker | 3:58c785c2b381 | 59 | |
networker | 3:58c785c2b381 | 60 | int r; |
networker | 3:58c785c2b381 | 61 | //r = USBBulkTransfer(device,0x01,(u8*)&cbw,31); // Send the command |
networker | 3:58c785c2b381 | 62 | r = USBBulkTransfer(_device,epout,(u8*)&cbw,31); // Send the command |
networker | 3:58c785c2b381 | 63 | if (r < 0) { |
networker | 3:58c785c2b381 | 64 | printf("first transfer returns %d\n", r); |
networker | 3:58c785c2b381 | 65 | return r; |
networker | 3:58c785c2b381 | 66 | } |
networker | 3:58c785c2b381 | 67 | if (data) { |
networker | 3:58c785c2b381 | 68 | //r = USBBulkTransfer(device,flags | 1,data,transferLen); |
networker | 3:58c785c2b381 | 69 | r = USBBulkTransfer(_device,flags ? epin : epout,data,transferLen); |
networker | 3:58c785c2b381 | 70 | if (r < 0) { |
networker | 3:58c785c2b381 | 71 | printf("second transfer returns %d (flags=%02xH)\n", r, flags); |
networker | 3:58c785c2b381 | 72 | return r; |
networker | 3:58c785c2b381 | 73 | } |
networker | 3:58c785c2b381 | 74 | } |
networker | 3:58c785c2b381 | 75 | |
networker | 3:58c785c2b381 | 76 | CSW csw; |
networker | 3:58c785c2b381 | 77 | csw.Signature = 0; |
networker | 3:58c785c2b381 | 78 | //r = USBBulkTransfer(device,0x81,(u8*)&csw,13); |
networker | 3:58c785c2b381 | 79 | r = USBBulkTransfer(_device,epin,(u8*)&csw,13); |
networker | 3:58c785c2b381 | 80 | if (r < 0) { |
networker | 3:58c785c2b381 | 81 | printf("third transfer returns %d\n", r); |
networker | 3:58c785c2b381 | 82 | return r; |
networker | 3:58c785c2b381 | 83 | } |
networker | 3:58c785c2b381 | 84 | if (csw.Signature != CSW_SIGNATURE) |
networker | 3:58c785c2b381 | 85 | return ERR_BAD_CSW_SIGNATURE; |
networker | 3:58c785c2b381 | 86 | |
networker | 3:58c785c2b381 | 87 | // ModeSense? |
networker | 3:58c785c2b381 | 88 | if (csw.Status == 1 && cmd[0] != 3) |
networker | 3:58c785c2b381 | 89 | return SCSIRequestSense(); |
networker | 3:58c785c2b381 | 90 | |
networker | 3:58c785c2b381 | 91 | return csw.Status; |
networker | 3:58c785c2b381 | 92 | } |
networker | 3:58c785c2b381 | 93 | |
networker | 3:58c785c2b381 | 94 | int SCSITestUnitReady() { |
networker | 3:58c785c2b381 | 95 | u8 cmd[6]; |
networker | 3:58c785c2b381 | 96 | memset(cmd,0,6); |
networker | 3:58c785c2b381 | 97 | return DoSCSI(cmd,6,DEVICE_TO_HOST,0,0); |
networker | 3:58c785c2b381 | 98 | } |
networker | 3:58c785c2b381 | 99 | |
networker | 3:58c785c2b381 | 100 | int SCSIRequestSense() { |
networker | 3:58c785c2b381 | 101 | u8 cmd[6] = {0x03,0,0,0,18,0}; |
networker | 3:58c785c2b381 | 102 | u8 result[18]; |
networker | 3:58c785c2b381 | 103 | int r = DoSCSI(cmd,6,DEVICE_TO_HOST,result,18); |
networker | 3:58c785c2b381 | 104 | return r; |
networker | 3:58c785c2b381 | 105 | } |
networker | 3:58c785c2b381 | 106 | |
networker | 3:58c785c2b381 | 107 | int SCSIInquiry() { |
networker | 3:58c785c2b381 | 108 | u8 cmd[6] = {0x12,0,0,0,36,0}; |
networker | 3:58c785c2b381 | 109 | u8 result[36+2]; |
networker | 3:58c785c2b381 | 110 | result[36] = '\n'; |
networker | 3:58c785c2b381 | 111 | result[37] = 0; |
networker | 3:58c785c2b381 | 112 | int r = DoSCSI(cmd,6,DEVICE_TO_HOST,result,36); |
networker | 3:58c785c2b381 | 113 | if (r == 0) |
networker | 3:58c785c2b381 | 114 | printf((const char*)result + 8); |
networker | 3:58c785c2b381 | 115 | return r; |
networker | 3:58c785c2b381 | 116 | } |
networker | 3:58c785c2b381 | 117 | |
networker | 3:58c785c2b381 | 118 | int SCSIReadCapacity(u32* blockCount, u32* blockSize) { |
networker | 3:58c785c2b381 | 119 | u8 cmd[10] = {0x25,0,0,0,8,0,0,0,0,0}; |
networker | 3:58c785c2b381 | 120 | u8 result[8]; |
networker | 3:58c785c2b381 | 121 | *blockSize = 0; |
networker | 3:58c785c2b381 | 122 | *blockCount = 0; |
networker | 3:58c785c2b381 | 123 | int r = DoSCSI(cmd,10,DEVICE_TO_HOST,result,8); |
networker | 3:58c785c2b381 | 124 | if (r == 0) { |
networker | 3:58c785c2b381 | 125 | *blockCount = BE32(result); |
networker | 3:58c785c2b381 | 126 | *blockSize = BE32(result+4); |
networker | 3:58c785c2b381 | 127 | } |
networker | 3:58c785c2b381 | 128 | return r; |
networker | 3:58c785c2b381 | 129 | } |
networker | 3:58c785c2b381 | 130 | |
networker | 3:58c785c2b381 | 131 | int SCSITransfer(u32 blockAddr, u32 blockCount, u8* dst, u32 blockSize, int direction) { |
networker | 3:58c785c2b381 | 132 | // USB hardware will only do 4k per transfer |
networker | 3:58c785c2b381 | 133 | while (blockCount*blockSize > 4096) { |
networker | 3:58c785c2b381 | 134 | int count = 4096/blockSize; |
networker | 3:58c785c2b381 | 135 | int r = SCSITransfer(blockAddr,count,dst,blockSize,direction); |
networker | 3:58c785c2b381 | 136 | dst += count*blockSize; |
networker | 3:58c785c2b381 | 137 | blockAddr += count; |
networker | 3:58c785c2b381 | 138 | blockCount -= count; |
networker | 3:58c785c2b381 | 139 | } |
networker | 3:58c785c2b381 | 140 | |
networker | 3:58c785c2b381 | 141 | u8 cmd[10]; |
networker | 3:58c785c2b381 | 142 | memset(cmd,0,10); |
networker | 3:58c785c2b381 | 143 | cmd[0] = (direction == DEVICE_TO_HOST) ? 0x28 : 0x2A; |
networker | 3:58c785c2b381 | 144 | BE32(blockAddr,cmd+2); |
networker | 3:58c785c2b381 | 145 | BE16(blockCount,cmd+7); |
networker | 3:58c785c2b381 | 146 | return DoSCSI(cmd,10,direction,dst,blockSize*blockCount); |
networker | 3:58c785c2b381 | 147 | } |
networker | 3:58c785c2b381 | 148 | }; |
networker | 3:58c785c2b381 | 149 | #endif |