what's the differences between 3288 and 3399 usb device which influence the rockusb?

[54shady]

I write myself a tool which copy from the rkflashtool with python using libusb1 see my github for the source code (branch setup or standlone) https://github.com/54shady/flashtool

Now, the tool is supoort rk3288 nicely, but when I try to use it on rk3399, i got the error below? can't figure out why the urb submit error happen?

Found devices 0x2207:0x330c EP_IN:129 EP_OUT:1 libusb: error [submit_bulk_transfer] submiturb failed error -1 errno=2 Traceback (most recent call last): File "/usr/local/bin/flashtool", line 9, in load_entry_point('flashtool==1.0.0', 'console_scripts', 'flashtool')() File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/init.py", line 10, in main sys.exit(app.main(sys.argv[1:])) File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/main.py", line 149, in main with self.get_operation() as op: File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/main.py", line 244, in get_operation with self.get_rkoperation() as op: File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/main.py", line 265, in get_rkoperation return RkOperation(self.logger, self.bus_id, self.dev_id, self.chk_rw) File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/vendor/rkusb.py", line 255, in init self.init_device() File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/vendor/rkusb.py", line 273, in init_device self.rk_device_init() File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/vendor/rkusb.py", line 265, in rk_device_init self.send_cbw(bulk_cb_wrap("TEST_UNIT_READY")) File "/home/zeroway/.local/lib/python2.7/site-packages/flashtool/vendor/rkusb.py", line 348, in send_cbw self.dev_handle.bulkWrite(self.EP_OUT, cbw) File "/home/zeroway/.local/lib/python2.7/site-packages/usb1/init.py", line 1537, in bulkWrite return self._bulkTransfer(endpoint, data, sizeof(data), timeout) File "/home/zeroway/.local/lib/python2.7/site-packages/usb1/init.py", line 1509, in _bulkTransfer self.handle, endpoint, data, length, byref(transferred), timeout, File "/home/zeroway/.local/lib/python2.7/site-packages/usb1/init.py", line 133, in mayRaiseUSBError raiseUSBError(value) File "/home/zeroway/.local/lib/python2.7/site-packages/usb1/init.py", line 125, in raiseUSBError raise STATUS_TO_EXCEPTION_DICT.get(value, __USBError)(value) usb1.USBErrorIO: LIBUSB_ERROR_IO [-1]

currently don't konw why, and what happend about the "usb1.USBErrorIO: LIBUSB_ERROR_IO"

anyone can give me some suggest?

[keveryang]

Maybe you should decode the endpoint info from device configuration instead of hard code for it.

[bubbadestroy]

Maybe you should decode the endpoint info from device configuration instead of hard code for it.

bubba destroy!