再读BULK IN却无法读到fpga取反回传的数据

2万 · 2018-8-16 10:00

上位机先读BULK IN，报超时退出->上位机写BULK OUT->上位机再读BULK IN则可以读到fpga取反回传的数据；
而上位机直接写BULK OUT->上位机再读BULK IN却无法读到fpga取反回传的数据，限时超时。

1万 · 2018-8-16 10:04

貌似碰到过这个问题，想想啊我

2万 · 2018-8-16 10:07

嗯，68013A与FPGA对接，68013A配置为异步Slave FIFO模式。

1万 · 2018-8-16 10:12

时间太久了，楼主还有其他信息吗

2万 · 2018-8-16 10:15

windows驱动基于EZusb老驱动开发，USB驱动读写过程增加了超时退出机制。

Bus hound抓取结果
  Phase  - Phase Type
         CTL USB control transfer
         IN Data in transfer
         OUT Data out transfer
         URB USB request block
  Data - Hex dump of the data transferred
  Descr  - Description of the phase
  Cmd... - Position in the captured data

Device  Phase  Data                   Description    Cmd.Phase.Ofs(rep)
------  -----  ------------------------  ----------------  ------------------
  21.0  CTL 40 b3 00 00  00 00 0a 00  VENDOR                1.1.0    1.上位机先读BULK IN，超时
  21.0  OUT 00 00 00 00  78 f8 12 00  ....x...                1.2.0
            42 18                   B.                      1.2.8
  21.0  URB 50 00 08 00  00 00 00 00  CONTROL TRANSFER       1.3.0
            98 53 44 82  20 00 00 00                         1.3.8
            b0 53 44 82  0a 00 00 00                         1.3.16
            0a 00 00 00  00 00 00 00                         1.3.24
  21.6  URB 48 00 09 00  00 00 01 c0  BULK/INT XFER          2.1.0
            98 53 44 82  20 00 00 00                         2.1.8
            f4 27 30 82  03 00 00 00                         2.1.16
            00 00 00 00  00 00 00 00                         2.1.24

  21.0  CTL 40 b3 00 00  00 00 0a 00  VENDOR                3.1.0    2.上位机写0X5555(BULK OUT)
  21.0  OUT 02 00 00 00  50 fe 12 00  ....P...                3.2.0
            bc 29                   .)                      3.2.8
  21.0  URB 50 00 08 00  00 00 00 00  CONTROL TRANSFER       3.3.0
            98 53 44 82  20 00 00 00                         3.3.8
            b0 53 44 82  0a 00 00 00                         3.3.16
            0a 00 00 00  00 00 00 00                         3.3.24
  21.2  OUT 55 55                   UU                      4.1.0
  21.2  URB 48 00 09 00  00 00 00 00  BULK/INT XFER          4.2.0
            98 53 44 82  20 00 00 00                         4.2.8
            d4 27 30 82  02 00 00 00                         4.2.16
            02 00 00 00  00 00 00 00                         4.2.24

  21.0  CTL 40 b3 00 00  00 00 0a 00  VENDOR                5.1.0    3.再读(BULK IN)，FPGA取反0xaaaa，读取ok
  21.0  OUT 00 00 00 00  78 f8 12 00  ....x...                5.2.0
            42 18                   B.                      5.2.8
  21.0  URB 50 00 08 00  00 00 00 00  CONTROL TRANSFER       5.3.0
            98 53 44 82  20 00 00 00                         5.3.8
            b0 53 44 82  0a 00 00 00                         5.3.16
            0a 00 00 00  00 00 00 00                         5.3.24
  21.6  IN    aa aa                   ..                      6.1.0
  21.6  URB 48 00 09 00  00 00 00 00  BULK/INT XFER          6.2.0
            98 53 44 82  20 00 00 00                         6.2.8
            f4 27 30 82  03 00 00 00                         6.2.16
            02 00 00 00  00 00 00 00                         6.2.24



  21.0  CTL 40 b3 00 00  00 00 0a 00  VENDOR                7.1.0    1.上位机直接写0X1111(BULK OUT)
  21.0  OUT 02 00 00 00  50 fe 12 00  ....P...                7.2.0
            bc 29                   .)                      7.2.8
  21.0  URB 50 00 08 00  00 00 00 00  CONTROL TRANSFER       7.3.0
            98 53 44 82  20 00 00 00                         7.3.8
            b0 53 44 82  0a 00 00 00                         7.3.16
            0a 00 00 00  00 00 00 00                         7.3.24
  21.2  OUT 11 11                   ..                      8.1.0
  21.2  URB 48 00 09 00  00 00 00 00  BULK/INT XFER          8.2.0
            98 53 44 82  20 00 00 00                         8.2.8
            d4 27 30 82  02 00 00 00                         8.2.16
            02 00 00 00  00 00 00 00                         8.2.24

  21.0  CTL 40 b3 00 00  00 00 0a 00  VENDOR                9.1.0    2.再读(BULK IN)，超时退出 error
  21.0  OUT 00 00 00 00  78 f8 12 00  ....x...                9.2.0
            42 18                   B.                      9.2.8
  21.0  URB 50 00 08 00  00 00 00 00  CONTROL TRANSFER       9.3.0
            98 53 44 82  20 00 00 00                         9.3.8
            b0 53 44 82  0a 00 00 00                         9.3.16
            0a 00 00 00  00 00 00 00                         9.3.24
  21.6  URB 48 00 09 00  00 00 01 c0  BULK/INT XFER          10.1.0
            98 53 44 82  20 00 00 00                         10.1.8
            f4 27 30 82  03 00 00 00                         10.1.16
            00 00 00 00  00 00 00 00                         10.1.24

2万 · 2018-8-16 10:18

驱动ezusb.sys已经很老了，难免会有一些问题的，建议楼主使用Cyusb.sys试试。

2万 · 2018-8-16 10:21

其实还是不大明白，我再琢磨琢磨吧，多谢了哈，结贴了先