Hi, >> How the UDC driver know when the request is really complete? > > An OUT request is really complete when either: > > The total number of bytes copied into req.buffer (i.e., > req.actual) is equal to req.length, or > > The number of bytes received in the last packet is smaller > than ep.maxpacket. I made some changes regarding req.actual. Now the UDC driver still cannot process SCSI_WRITE_10 command. Please see the attached UDC driver log when i try to write to a text file. There should be three SCSI commands in the log: SCSI_REQUEST_SENSE, SCSI_TEST_UNIT_READY and SCSI_WRITE_10. SCSI_WRITE_10 is not received properly. Thanks, victor
g_file_storage gadget: bulk-out, length 31: 00000000: 55 53 42 43 0d 01 00 00 12 00 00 00 80 00 06 03 00000010: 00 00 00 12 00 00 00 00 00 00 00 00 c3 63 4a g_file_storage gadget: SCSI command: REQUEST SENSE; Dc=6, Di=18; Hc=6, Hi=18 g_file_storage gadget: bulk-in, length 18: 00000000: 70 00 06 00 00 00 00 0a 00 00 00 00 29 00 00 00 00000010: 00 00 [start_transfer] 60070 a000000 ept1 in queue len 0x12, buffer 0xc1344000 0: 0x60070 4: 0xa000000 8: 0x0 c: 0x29 bulk_in_complete --> 0, 18/18 g_file_storage gadget: bulk-in, length 13: 00000000: 55 53 42 53 0d 01 00 00 00 00 00 00 00 [start_transfer] 53425355 10d ept1 in queue len 0xd, buffer 0xc1304000 0: 0x53425355 4: 0x10d 8: 0x0 bulk_in_complete --> 0, 13/13 EP1 OUT IRQ 0x28 ep1_out: RX DMA done : NULL REQ on OUT EP-1 [start_transfer] 60070 a000000 ept1 out queue len 0x200, buffer 0xc1344000 g_file_storage gadget: bulk-out, length 31: 00000000: 55 53 42 43 0e 01 00 00 00 00 00 00 00 00 06 00 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 c3 63 4a g_file_storage gadget: SCSI command: TEST UNIT READY; Dc=6, Dn=0; Hc=6, Hn=0 g_file_storage gadget: bulk-in, length 13: 00000000: 55 53 42 53 0e 01 00 00 00 00 00 00 00 [start_transfer] 53425355 10e ept1 in queue len 0xd, buffer 0xc1344000 0: 0x53425355 4: 0x10e 8: 0x0 bulk_in_complete --> 0, 13/13 EP1 OUT IRQ 0x28 ep1_out: RX DMA done : NULL REQ on OUT EP-1 [start_transfer] 53425355 10d ept1 out queue len 0x200, buffer 0xc1304000 g_file_storage gadget: bulk-out, length 31: EP1 OUT IRQ 0x28 epnum 1 in 0 len 0 512 0 g_file_storage gadget: bulk-out, length 0: g_file_storage gadget: bulk_out_complete --> 0, 0/31 g_file_storage gadget: bulk_out_complete --> 0, 0/31 g_file_storage gadget: invalid CBW: len 0 sig 0x43425355 g_file_storage gadget: bulk-in set wedge g_file_storage gadget: get_next_command [start_transfer] 43425355 10f ept1 out queue len 0x200, buffer 0xc1304000
