Re: [Bitpim-devel] Timeouts on SCP-5500

[Roger B. <ro...@ro...>]

> I'll do something.  If I can keep the hack limited to com_sanyo5500, I
> may check it in.

Ideally I would like a generic solution that can work for all phones.
So far I don't have a solution that works for ANY phone!

> How do I get the bulk limit?  When I was trying the Sanyo 4900 using
> libusb, things would seem to happen in 64 byte chunks.  It also always
> eventually timed out on me.

It is wMaxPacketSize in an endpoint descriptor.  This is from an AudioVox
8900.

      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               none
        wMaxPacketSize         64
        bInterval               0


>   File "./commport.py", line 267, in readuntil
>     self.ser.flushInput()
> AttributeError: _usbdevicewrapper instance has no attribute 'flushInput'

Mmmm, that code is somewhat dodgy anyway since it flushes the input
buffer, which would throw away any data in it.  However we just
timed out on the read meaning there is no data to flush.  The win32
pySerial code does a fair job of resetting/kicking the input.

I added a flushInput method to the usbdevicewrapper.  It has a call to 
native.usb.USBFile.resetep.  You can see commented out code in that 
that actually clears halts and does and endpoint reset at the USB 
level.  That had no effect on the VX4400 USB issues as there wasn't 
actually a halt, nor did resetep actually have any effect.  You can 
try uncommenting all that to see if it makes a difference.

Roger