mcuee
commented
1 year ago 1) Interrupt OUT Endpoint Speed when bInterval = 1 (125us).
PS C:\libusbK-dev-kit_release> .\kBench.exe list notestselect mode=async write
device-count=1
1. EZ-USB (USB\VID_04B4&PID_1004\6&8694159&0&3) [WinUSB]
Select device (1-1) :1
opened EZ-USB (USB\VID_04B4&PID_1004\6&8694159&0&3)..
Write Test Information
Driver : WinUSB
Vid / Pid : 04B4h / 1004h
DevicePath : \\?\usb#vid_04b4&pid_1004#6&8694159&0&3#{b89f58fd-b8d4-d215-4d39-0cbd5fc94c6c}
Device Speed : High
Interface # : 00h
Alt Interface # : 00h
Num Endpoints : 2
Priority : 0
Read Size : 4096
Write Size : 4096
Buffer Count : 1
Display Refresh : 1000 (ms)
Transfer Timeout: 5000 (ms)
Retry Count : 0
Verify Data : Off
Interrupt Write (Ep02h) Maximum Packet Size: 3072
While the test is running:
Press 'Q' to quit
Press 'T' for test details
Press 'I' for status information
Press 'R' to reset averages
Press 'Q' to exit, any other key to begin..
Avg. Bytes/s: 6506834.65 Transfers: 1614 Bytes/s: 6506834.65
Avg. Bytes/s: 6584888.89 Transfers: 3241 Bytes/s: 6664192.00
Avg. Bytes/s: 6933050.40 Transfers: 5105 Bytes/s: 7634944.00
Avg. Bytes/s: 7441338.65 Transfers: 7296 Bytes/s: 8974336.00
Avg. Bytes/s: 8138105.26 Transfers: 9966 Bytes/s: 10936320.00
Avg. Bytes/s: 7910127.66 Transfers: 11618 Bytes/s: 6766592.00
Avg. Bytes/s: 7738183.47 Transfers: 13283 Bytes/s: 6719054.19
Avg. Bytes/s: 7595949.79 Transfers: 14923 Bytes/s: 6611653.54
Avg. Bytes/s: 7735631.26 Transfers: 17086 Bytes/s: 8859648.00
Avg. Bytes/s: 7819376.93 Transfers: 19180 Bytes/s: 8577024.00
Avg. Bytes/s: 7744005.79 Transfers: 20916 Bytes/s: 6998677.17
Avg. Bytes/s: 7701619.47 Transfers: 22710 Bytes/s: 7239629.56
Avg. Bytes/s: 7640766.13 Transfers: 24368 Bytes/s: 6894586.80
Avg. Bytes/s: 7861771.27 Transfers: 27021 Bytes/s: 10706096.55
Avg. Bytes/s: 7854605.65 Transfers: 28914 Bytes/s: 7753728.00
Avg. Bytes/s: 7878138.08 Transfers: 30924 Bytes/s: 8232960.00
stopped Ep02h thread. ExitCode=0
Write Test Information
Driver : WinUSB
Vid / Pid : 04B4h / 1004h
DevicePath : \\?\usb#vid_04b4&pid_1004#6&8694159&0&3#{b89f58fd-b8d4-d215-4d39-0cbd5fc94c6c}
Device Speed : High
Interface # : 00h
Alt Interface # : 00h
Num Endpoints : 2
Priority : 0
Read Size : 4096
Write Size : 4096
Buffer Count : 1
Display Refresh : 1000 (ms)
Transfer Timeout: 5000 (ms)
Retry Count : 0
Verify Data : Off
Interrupt Write (Ep02h) Maximum Packet Size: 3072
Total Bytes : 135417856
Total Transfers : 33061
Avg. Bytes/sec : 7921952.50
Elapsed Time : 17.09 seconds
Press any key to exit..Cypress CyStream Utility
Higher Speed for the OUT endpoint: 24000 KB/sec is the expected when bInterval = 1
2) Interrupt IN Endpoint Speed when bInterval = 1 (125us)
PS C:\libusbK-dev-kit_release> .\kBench.exe list notestselect mode=async read
device-count=1
1. EZ-USB (USB\VID_04B4&PID_1004\6&8694159&0&3) [WinUSB]
Select device (1-1) :1
opened EZ-USB (USB\VID_04B4&PID_1004\6&8694159&0&3)..
Read Test Information
Driver : WinUSB
Vid / Pid : 04B4h / 1004h
DevicePath : \\?\usb#vid_04b4&pid_1004#6&8694159&0&3#{b89f58fd-b8d4-d215-4d39-0cbd5fc94c6c}
Device Speed : High
Interface # : 00h
Alt Interface # : 00h
Num Endpoints : 2
Priority : 0
Read Size : 4096
Write Size : 4096
Buffer Count : 1
Display Refresh : 1000 (ms)
Transfer Timeout: 5000 (ms)
Retry Count : 0
Verify Data : Off
Interrupt Read (Ep86h) Maximum Packet Size: 3072
While the test is running:
Press 'Q' to quit
Press 'T' for test details
Press 'I' for status information
Press 'R' to reset averages
Press 'Q' to exit, any other key to begin..
Avg. Bytes/s: 4118373.98 Transfers: 7915 Bytes/s: 4118373.98
Avg. Bytes/s: 3969969.23 Transfers: 15624 Bytes/s: 3828329.78
Avg. Bytes/s: 4007185.41 Transfers: 23597 Bytes/s: 4082176.00
Avg. Bytes/s: 4016298.88 Transfers: 31495 Bytes/s: 4043776.00
Avg. Bytes/s: 3968992.25 Transfers: 39000 Bytes/s: 3782047.24
Avg. Bytes/s: 3844572.94 Transfers: 45399 Bytes/s: 3227869.95
Avg. Bytes/s: 3821397.67 Transfers: 52589 Bytes/s: 3681280.00
Avg. Bytes/s: 3808437.48 Transfers: 59849 Bytes/s: 3717120.00
Avg. Bytes/s: 3812322.79 Transfers: 67356 Bytes/s: 3843584.00
Avg. Bytes/s: 3774002.78 Transfers: 74168 Bytes/s: 3432818.90
Avg. Bytes/s: 3770480.56 Transfers: 81463 Bytes/s: 3735040.00
Avg. Bytes/s: 3744026.53 Transfers: 88204 Bytes/s: 3451392.00
Avg. Bytes/s: 3680739.86 Transfers: 93902 Bytes/s: 2917376.00
Avg. Bytes/s: 3660643.44 Transfers: 100539 Bytes/s: 3398144.00
Avg. Bytes/s: 3586682.58 Transfers: 105625 Bytes/s: 2563023.62
Avg. Bytes/s: 3589318.07 Transfers: 112713 Bytes/s: 3629056.00
stopped Ep86h thread. ExitCode=0
Read Test Information
Driver : WinUSB
Vid / Pid : 04B4h / 1004h
DevicePath : \\?\usb#vid_04b4&pid_1004#6&8694159&0&3#{b89f58fd-b8d4-d215-4d39-0cbd5fc94c6c}
Device Speed : High
Interface # : 00h
Alt Interface # : 00h
Num Endpoints : 2
Priority : 0
Read Size : 4096
Write Size : 4096
Buffer Count : 1
Display Refresh : 1000 (ms)
Transfer Timeout: 5000 (ms)
Retry Count : 0
Verify Data : Off
Interrupt Read (Ep86h) Maximum Packet Size: 3072
Total Bytes : 60808704
Total Transfers : 118767
Avg. Bytes/sec : 3557520.86
Elapsed Time : 17.09 seconds
Press any key to exit..Same not good speed for the IN endpoint, even with bInterval = 1.
Int_src_3072_mod1.zip
Int_src_3072_mod.zip
Speed from libusbK.
Idealy the speed should be 12MB/sec for the high bandwidth high speed Interrupt IN/OUT endpoint when bInterval = 2 (250us).
3072 B / 250 us = 120,288 Bytes/sec.
FW source codes -- minor modifiction from Cypress BulkSrcSink to use Interrupt Endpoint.
Take note WIndows will not be able to enumerate the device if bInterval = 1 for both Interrupt IN/OUT endpoint in this case.
Int_src_3072.zip