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Detach kernel driver before doing anything with device.

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Initialization of the device must be done after device is detached from
kernel, otherwise exception will be thrown about device is busy message.
This commit is contained in:
gryf
2021-07-07 17:34:11 +02:00
parent aa5aecb205
commit e9ea91f2c3
1 changed files with 4 additions and 4 deletions
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8
linak_ctrl.py
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@@ -112,6 +112,10 @@ class LinakDevice:
self._dev = usb.core.find(idVendor=LinakDevice.VEND, self._dev = usb.core.find(idVendor=LinakDevice.VEND,
idProduct=LinakDevice.PROD) idProduct=LinakDevice.PROD)
# detach kernel driver, if attached
if self._dev.is_kernel_driver_active(0):
self._dev.detach_kernel_driver(0)
# init device # init device
buf = [0 for _ in range(BUF_LEN)] buf = [0 for _ in range(BUF_LEN)]
buf[0] = MODE_OF_OPERATION # 0x03 Feature report ID = 3 buf[0] = MODE_OF_OPERATION # 0x03 Feature report ID = 3
@@ -123,10 +127,6 @@ class LinakDevice:
# hold a little bit, to make it effect. # hold a little bit, to make it effect.
time.sleep(0.5) time.sleep(0.5)
# detach kernel driver, if attached
if self._dev.is_kernel_driver_active(0):
self._dev.detach_kernel_driver(0)
def get_position(self, args): def get_position(self, args):
try: try:
while True: while True: