I blocked a message to this thread due to the attached doc size. I did
it because some people subscribed in this mailing list might have slow
internet connection. Please, upload the file to a remote site and send
a message with the link to download.
2015-06-01 16:52 GMT-03:00 Caleb Mayfield <caleb.mayfi...@gmail.com>:
> SUCCESS!!
> I found my error. Apparently I need to claim the device by this program that
> I'm running. The new code is as follows (with some new declarations);
>
> import sys
> import usb.core
> import usb.util
>
>
> dev = usb.core.find(idVendor=0x130c, idProduct=0x0001)
> interface = 5
> endpoint = dev[0][(0,0)][0]
>
> if dev.is_kernel_driver_active(interface) is True:
> # tell the kernel to detach
> dev.detach_kernel_driver(interface)
> # claim the device
> usb.util.claim_interface(dev, interface)
>
> #if dev is None:
> # raise ValueError('Device not found')
>
> dev.set_configuration()
> print "Connected to " + str(dev)
>
> QS="\x51\x53\x0D" #Call for Serial number
> BLON="\x42\x4C\x4F\x4E\x0D" #Backlight ON
> BLOFF="\x42\x4C\x4F\x46\x46\x0D" #Backlight OFF
>
>
> dev.write(0x02,QS,0,0)
>
> ret = dev.read(0x82,endpoint.wMaxPacketSize)
> sret=''.join([chr(x) for x in ret])
> print "Return Raw: ",ret
> print "Return : ", sret
>
> # release the device
> #usb.util.release_interface(dev, interface)
> # reattach the device to the OS kernel
> #dev.attach_kernel_driver(interface)
>
> I did get an error the first time when I did not have the last line
> commented out. I need to work on that one, but it does work now! I can call
> the serial number and turn the back light on and off so the train is
> rolling.
>
> Thanks!
>
>
>
> On Mon, Jun 1, 2015 at 8:44 AM, Caleb Mayfield <caleb.mayfi...@gmail.com>
> wrote:
>>
>> Attached is the manual that was sent to me. One thing to note from the
>> person who sent it to me, this was in development and was never completed.
>> There is no Appendix C with an example code in it. I'm still learning about
>> this level of programming. My experience thus far has been a moderate level
>> of Arduino work and some beginner level shell scripting and java. I feel
>> like I'm missing something that's right in front of my face, so any help is
>> appreciated.
>>
>> Below is the lsusb -v output for this device. I'm currently working on a
>> Pi2 running the 2015-05-05 Raspbian release using Python 2.7.3 for coding.
>>
>> Bus 001 Device 004: ID 130c:0001
>> Device Descriptor:
>> bLength 18
>> bDescriptorType 1
>> bcdUSB 1.01
>> bDeviceClass 255 Vendor Specific Class
>> bDeviceSubClass 255 Vendor Specific Subclass
>> bDeviceProtocol 255 Vendor Specific Protocol
>> bMaxPacketSize0 64
>> idVendor 0x130c
>> idProduct 0x0001
>> bcdDevice 1.00
>> iManufacturer 1 Quest Technologies, Inc.
>> iProduct 2 Quest Technologies SoundPro SLM
>> iSerial 6 BJL060022
>> bNumConfigurations 1
>> Configuration Descriptor:
>> bLength 9
>> bDescriptorType 2
>> wTotalLength 32
>> bNumInterfaces 1
>> bConfigurationValue 1
>> iConfiguration 3 Quest Technologies Device
>> bmAttributes 0xc0
>> Self Powered
>> MaxPower 0mA
>> Interface Descriptor:
>> bLength 9
>> bDescriptorType 4
>> bInterfaceNumber 0
>> bAlternateSetting 0
>> bNumEndpoints 2
>> bInterfaceClass 255 Vendor Specific Class
>> bInterfaceSubClass 255 Vendor Specific Subclass
>> bInterfaceProtocol 255 Vendor Specific Protocol
>> iInterface 5 Virtual COM
>> Endpoint Descriptor:
>> bLength 7
>> bDescriptorType 5
>> bEndpointAddress 0x02 EP 2 OUT
>> bmAttributes 2
>> Transfer Type Bulk
>> Synch Type None
>> Usage Type Data
>> wMaxPacketSize 0x0040 1x 64 bytes
>> bInterval 0
>> Endpoint Descriptor:
>> bLength 7
>> bDescriptorType 5
>> bEndpointAddress 0x82 EP 2 IN
>> bmAttributes 2
>> Transfer Type Bulk
>> Synch Type None
>> Usage Type Data
>> wMaxPacketSize 0x0040 1x 64 bytes
>> bInterval 0
>> Device Status: 0x0001
>> Self Powered
>>
>>
>> On Sat, May 30, 2015 at 5:05 AM, Karl Palsson <ka...@tweak.net.au> wrote:
>>>
>>>
>>> I'm pretty sure you're not actually sending the request that the manual
>>> says.
>>>
>>> Caleb Mayfield <caleb.mayfi...@gmail.com> wrote:
>>> > I am new to using Python and PyUSB. I am trying to write a program to
>>> > communicate with a 3M Quest SoundPro sound meter. Because I'm new, I'm
>>> > starting simple. The vendor was gracious enough to send me the manual
>>> > they
>>> > have on the commands for the unit. Right now all I'm trying to do is
>>> > request the serial number and read the response. I just need to get
>>> > communication between a Raspberry Pi and the device working. I have
>>> > used
>>> > the software on a Windows 7 machine along with a USB sniffer to verify
>>> > the
>>> > commands and endpoint address were correct.
>>> >
>>> > This is the program;
>>> >
>>> > import usb.core
>>> >
>>> > import usb.util
>>> >
>>> > import sys
>>> >
>>> > dev = usb.core.find(idVendor=0x130c, idProduct=0x0001)
>>> >
>>> > if dev is None:
>>> >
>>> > raise ValueError('Device not found')
>>> >
>>> > dev.set_configuration()
>>> >
>>> > print "Connected to " + str(dev)
>>> >
>>> > QS = '0x51,0x53,0x0D' #Call for Serial number
>>> >
>>> > dev.write(0x02,QS,0,0)
>>>
>>> I don't believe this is really right, you're probably meant to send the
>>> three bytes, 0x51, 0x53, 0xd, not the 14 bytes, 0, x,5,1,,,0,x,5,3.....
>>>
>>> You probably just want to do something like...
>>>
>>> dev.write(0x02, "QS\r", 0, 0)
>>>
>>>
>>> If you can share the manual, You can probably get more correct help than
>>> my asumptions. :)
>>>
>>> Cheers,
>>> Karl P
>>>
>>>
>>> ------------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> pyusb-users mailing list
>>> pyusb-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>>>
>>
>>
>>
>> --
>> Caleb Mayfield
>>
>> James 1:19-20
>
>
>
>
> --
> Caleb Mayfield
>
> James 1:19-20
>
> ------------------------------------------------------------------------------
>
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> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
--
Best Regards,
Wander Lairson Costa
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