[fpc-pascal] USB Human Interface Devices

Thu Aug 29 18:21:34 CEST 2019

libusb has a debug verbosity level which currently is set to 3 (i.e., very
verbose) in the device open function.
There is a define in libusbx.pas that you can change to shut off debug
messages.

On Thu, Aug 29, 2019 at 12:03 PM James Richters <
james at productionautomation.net> wrote:

> Now I have a new strange issue.   I've been working with my sample program
> here: https://github.com/Zaaphod/libusbxhid/blob/WHB04B-4/whb04b.pas
>
> And it's been working just fine for me.. just some minor little tweaks and
> adding new functionality.. etc..  I was just about to start to merge this
> into my large project when I sent the sample program to my dad... on his
> system he just gets a screen full of errors... but on mine, it's nice and
> clean.  I don't understand what is happening.. I reduced my test program
> down to the most basic sample that demonstrates the issue here:
> https://github.com/Zaaphod/libusbxhid/blob/System_Specific_Bug/bugtest.pas
>
> All this program does is checks to see if a specific device exists.. this
> program works perfectly on 4 computers and has no issue, but on one of my
> dad's computers I get the following errors:
>
> libusb: error [init_device] device
> 'USB\VID_2109&PID_2812&ASMEDIAUSBD_HUB\00000830' is no longer connected!
> libusb: error [init_device] device 'USB\VID_1778&PID_0224\40000030' is no
> longer connected!
> libusb: info [cache_config_descriptors] could not access configuration
> descriptor 0 (dummy) for 'USB\VID_2109&PID_2811\5&34472DFD&0&4': [31] A
> device attached to the system is not functioning.
> libusb: error [init_device] device
> 'USB\VID_1058&PID_10B8\57583631413934354E345939' is no longer connected!
>
>
> I don't know why Libusb is reporting this, no one tried to open anything
> so who cares if some devices are not  connected, and how does it know they
> were connected at one time... this is not even an error..  if it's not
> connected, just ignore it, nobody cares about that device anyway.
> So I have two questions:
> 1. any idea why these errors are being generated and how to fix it?
> 2. Is there a way to turn off libusb errors, info and warnings?
>
> All systems are windows 10 Pro 64 bit, program was compiled for windows
> 64bit as well.
>
> Here is the complete output with debug info:
>
> K:\ProAuto>bugtest.exe
> libusb: error [init_device] device
> 'USB\VID_2109&PID_2812&ASMEDIAUSBD_HUB\00000830' is no longer connected!
> libusb: error [init_device] device 'USB\VID_1778&PID_0224\40000030' is no
> longer connected!
> libusb: info [cache_config_descriptors] could not access configuration
> descriptor 0 (dummy) for 'USB\VID_2109&PID_2811\5&34472DFD&0&4': [31] A
> device attached to the system is not functioning.
> libusb: error [init_device] device
> 'USB\VID_1058&PID_10B8\57583631413934354E345939' is no longer connected!
> Looking for $10CE, $EB93: DEBUG Found 20 devices attached
> DEBUG 1038:1310, bus: 7, address: 6
> DEBUG 1002:4399, bus: 10, address: 0
> DEBUG 1B21:1142, bus: 3, address: 0
> DEBUG 046D:C31C, bus: 7, address: 3
> DEBUG 1B21:1142, bus: 1, address: 0
> DEBUG 2109:0812, bus: 1, address: 1
> DEBUG 2109:2812, bus: 7, address: 2
> DEBUG 1002:4397, bus: 6, address: 0
> DEBUG 1002:4397, bus: 5, address: 0
> DEBUG 0A12:0001, bus: 5, address: 1
> DEBUG 2109:2811, bus: 7, address: 9
> DEBUG 1002:4397, bus: 9, address: 0
> DEBUG 0C45:7403, bus: 7, address: 4
> DEBUG 1002:4396, bus: 8, address: 0
> DEBUG 1002:4396, bus: 7, address: 0
> DEBUG 0E50:0002, bus: 7, address: 7
> DEBUG 1B21:1142, bus: 2, address: 0
> DEBUG 1002:4396, bus: 4, address: 0
> DEBUG 1A40:0101, bus: 7, address: 1
> DEBUG 2109:2812, bus: 7, address: 5
> DEBUG Index of device 4302:60307=-1
> DEBUG Freeing device list with 20 devices
> DEBUG USB device list freed. good boy!
> FALSE
> libusb: error [init_device] device
> 'USB\VID_2109&PID_2812&ASMEDIAUSBD_HUB\00000830' is no longer connected!
> libusb: error [init_device] device 'USB\VID_1778&PID_0224\40000030' is no
> longer connected!
> libusb: info [cache_config_descriptors] could not access configuration
> descriptor 0 (dummy) for 'USB\VID_2109&PID_2811\5&34472DFD&0&4': [31] A
> device attached to the system is not functioning.
> libusb: error [init_device] device
> 'USB\VID_1058&PID_10B8\57583631413934354E345939' is no longer connected!
> Looking for $10CE, $EB93: DEBUG Found 20 devices attached
> DEBUG 1038:1310, bus: 7, address: 6
> DEBUG 1002:4399, bus: 10, address: 0
> DEBUG 1B21:1142, bus: 3, address: 0
> DEBUG 046D:C31C, bus: 7, address: 3
> DEBUG 1B21:1142, bus: 1, address: 0
> DEBUG 2109:0812, bus: 1, address: 1
> DEBUG 2109:2812, bus: 7, address: 2
> DEBUG 1002:4397, bus: 6, address: 0
> DEBUG 1002:4397, bus: 5, address: 0
> DEBUG 0A12:0001, bus: 5, address: 1
> DEBUG 2109:2811, bus: 7, address: 9
> DEBUG 1002:4397, bus: 9, address: 0
> DEBUG 0C45:7403, bus: 7, address: 4
> DEBUG 1002:4396, bus: 8, address: 0
> DEBUG 1002:4396, bus: 7, address: 0
> DEBUG 0E50:0002, bus: 7, address: 7
> DEBUG 1B21:1142, bus: 2, address: 0
> DEBUG 1002:4396, bus: 4, address: 0
> DEBUG 1A40:0101, bus: 7, address: 1
> DEBUG 2109:2812, bus: 7, address: 5
> DEBUG Index of device 4302:60307=-1
> DEBUG Freeing device list with 20 devices
> DEBUG USB device list freed. good boy!
> FALSE
> libusb: error [init_device] device
> 'USB\VID_2109&PID_2812&ASMEDIAUSBD_HUB\00000830' is no longer connected!
> libusb: error [init_device] device 'USB\VID_1778&PID_0224\40000030' is no
> longer connected!
> libusb: info [cache_config_descriptors] could not access configuration
> descriptor 0 (dummy) for 'USB\VID_2109&PID_2811\5&34472DFD&0&4': [31] A
> device attached to the system is not functioning.
> libusb: error [init_device] device
> 'USB\VID_1058&PID_10B8\57583631413934354E345939' is no longer connected!
> Looking for $10CE, $EB93: DEBUG Found 20 devices attached
> DEBUG 1038:1310, bus: 7, address: 6
> DEBUG 1002:4399, bus: 10, address: 0
> DEBUG 1B21:1142, bus: 3, address: 0
> DEBUG 046D:C31C, bus: 7, address: 3
> DEBUG 1B21:1142, bus: 1, address: 0
> DEBUG 2109:0812, bus: 1, address: 1
> DEBUG 2109:2812, bus: 7, address: 2
> DEBUG 1002:4397, bus: 6, address: 0
> DEBUG 1002:4397, bus: 5, address: 0
> DEBUG 0A12:0001, bus: 5, address: 1
> DEBUG 2109:2811, bus: 7, address: 9
> DEBUG 1002:4397, bus: 9, address: 0
> DEBUG 0C45:7403, bus: 7, address: 4
> DEBUG 1002:4396, bus: 8, address: 0
> DEBUG 1002:4396, bus: 7, address: 0
> DEBUG 0E50:0002, bus: 7, address: 7
> DEBUG 1B21:1142, bus: 2, address: 0
> DEBUG 1002:4396, bus: 4, address: 0
> DEBUG 1A40:0101, bus: 7, address: 1
> DEBUG 2109:2812, bus: 7, address: 5
> DEBUG Index of device 4302:60307=-1
> DEBUG Freeing device list with 20 devices
> DEBUG USB device list freed. good boy!
> FALSE
> Heap dump by heaptrc unit of K:\ProAuto\bugtest.exe
> 685 memory blocks allocated : 33042/37272
> 685 memory blocks freed     : 33042/37272
> 0 unfreed memory blocks : 0
> True heap size : 163840 (128 used in System startup)
> True free heap : 163712
>
> When I run it on any other computer I get:
> I:\Programming\Gcode\bug>bugtest.exe
> Looking for $10CE, $EB93: DEBUG Found 17 devices attached
> DEBUG 8086:A36D, bus: 1, address: 0
> DEBUG 8087:0AAA, bus: 1, address: 8
> DEBUG 05E3:0612, bus: 1, address: 18
> DEBUG 0424:2734, bus: 1, address: 42
> DEBUG 1D50:6015, bus: 1, address: 14
> DEBUG 05E3:0743, bus: 1, address: 22
> DEBUG 1B1C:0C15, bus: 1, address: 9
> DEBUG 05E3:0610, bus: 1, address: 21
> DEBUG 05E3:0610, bus: 1, address: 6
> DEBUG 04E8:61F5, bus: 1, address: 1
> DEBUG 1B1C:0C10, bus: 1, address: 7
> DEBUG 0424:274C, bus: 1, address: 43
> DEBUG 1B1C:1B4F, bus: 1, address: 41
> DEBUG 1A40:0101, bus: 1, address: 2
> DEBUG 0C45:7403, bus: 1, address: 26
> DEBUG 0E50:0002, bus: 1, address: 60
> DEBUG 10C4:EA60, bus: 1, address: 4
> DEBUG Index of device 4302:60307=-1
> DEBUG Freeing device list with 17 devices
> DEBUG USB device list freed. good boy!
> FALSE
> Looking for $10CE, $EB93: DEBUG Found 17 devices attached
> DEBUG 8086:A36D, bus: 1, address: 0
> DEBUG 8087:0AAA, bus: 1, address: 8
> DEBUG 05E3:0612, bus: 1, address: 18
> DEBUG 0424:2734, bus: 1, address: 42
> DEBUG 1D50:6015, bus: 1, address: 14
> DEBUG 05E3:0743, bus: 1, address: 22
> DEBUG 1B1C:0C15, bus: 1, address: 9
> DEBUG 05E3:0610, bus: 1, address: 21
> DEBUG 05E3:0610, bus: 1, address: 6
> DEBUG 04E8:61F5, bus: 1, address: 1
> DEBUG 1B1C:0C10, bus: 1, address: 7
> DEBUG 0424:274C, bus: 1, address: 43
> DEBUG 1B1C:1B4F, bus: 1, address: 41
> DEBUG 1A40:0101, bus: 1, address: 2
> DEBUG 0C45:7403, bus: 1, address: 26
> DEBUG 0E50:0002, bus: 1, address: 60
> DEBUG 10C4:EA60, bus: 1, address: 4
> DEBUG Index of device 4302:60307=-1
> DEBUG Freeing device list with 17 devices
> DEBUG USB device list freed. good boy!
> FALSE
> Looking for $10CE, $EB93: DEBUG Found 17 devices attached
> DEBUG 8086:A36D, bus: 1, address: 0
> DEBUG 8087:0AAA, bus: 1, address: 8
> DEBUG 05E3:0612, bus: 1, address: 18
> DEBUG 0424:2734, bus: 1, address: 42
> DEBUG 1D50:6015, bus: 1, address: 14
> DEBUG 05E3:0743, bus: 1, address: 22
> DEBUG 1B1C:0C15, bus: 1, address: 9
> DEBUG 05E3:0610, bus: 1, address: 21
> DEBUG 05E3:0610, bus: 1, address: 6
> DEBUG 04E8:61F5, bus: 1, address: 1
> DEBUG 1B1C:0C10, bus: 1, address: 7
> DEBUG 0424:274C, bus: 1, address: 43
> DEBUG 1B1C:1B4F, bus: 1, address: 41
> DEBUG 1A40:0101, bus: 1, address: 2
> DEBUG 0C45:7403, bus: 1, address: 26
> DEBUG 0E50:0002, bus: 1, address: 60
> DEBUG 10C4:EA60, bus: 1, address: 4
> DEBUG Index of device 4302:60307=-1
> DEBUG Freeing device list with 17 devices
> DEBUG USB device list freed. good boy!
> FALSE
> Heap dump by heaptrc unit of I:\Programming\Gcode\bug\bugtest.exe
> 595 memory blocks allocated : 28731/32376
> 595 memory blocks freed     : 28731/32376
> 0 unfreed memory blocks : 0
> True heap size : 163840 (160 used in System startup)
> True free heap : 163680
>
> James
> _______________________________________________
> fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
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>
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