def _get_installed_device_attribute_vi_int32(self, handle, index,
attribute_id):
attribute_value_ctype = ctypes_types.ViInt32_ctype(0)
error_code = self.library.niModInst_GetInstalledDeviceAttributeViInt32(
handle, index, attribute_id, ctypes.pointer(attribute_value_ctype))
errors._handle_error(self, error_code)
return attribute_value_ctype.value
def get_extended_error_info(self, error_info_buffer_size):
error_info_ctype = ctypes_types.ViChar_ctype(
0) # TODO(marcoskirsch): allocate a buffer
error_code = self.library.niModInst_GetExtendedErrorInfo(
error_info_buffer_size, ctypes.pointer(error_info_ctype))
errors._handle_error(self, error_code)
return error_info_ctype.value.decode("ascii")
def _open_installed_devices_session(self, driver):
handle_ctype = ctypes_types.ViSession_ctype(0)
item_count_ctype = ctypes_types.ViInt32_ctype(0)
error_code = self.library.niModInst_OpenInstalledDevicesSession(
driver.encode('ascii'), ctypes.pointer(handle_ctype),
ctypes.pointer(item_count_ctype))
errors._handle_error(self, error_code)
return handle_ctype.value, item_count_ctype.value
def _get_installed_device_attribute_vi_string(self, handle, index,
attribute_id,
attribute_value_buffer_size):
attribute_value_ctype = ctypes_types.ViChar_ctype(
0) # TODO(marcoskirsch): allocate a buffer
error_code = self.library.niModInst_GetInstalledDeviceAttributeViString(
handle, index, attribute_id, attribute_value_buffer_size,
ctypes.pointer(attribute_value_ctype))
errors._handle_error(self, error_code)
return attribute_value_ctype.value.decode("ascii")
def get_extended_error_info(self):
error_info_buffer_size = 0
error_info_ctype = ctypes.cast(
ctypes.create_string_buffer(error_info_buffer_size),
ctypes_types.ViString_ctype)
error_code = self.library.niModInst_GetExtendedErrorInfo(
error_info_buffer_size, error_info_ctype)
# Don't use _handle_error, because positive value in error_code means size, not warning.
if (errors._is_error(error_code)):
raise errors.Error(self.library, self.vi, error_code)
error_info_buffer_size = error_code
error_info_ctype = ctypes.cast(
ctypes.create_string_buffer(error_info_buffer_size),
ctypes_types.ViString_ctype)
error_code = self.library.niModInst_GetExtendedErrorInfo(
error_info_buffer_size, error_info_ctype)
errors._handle_error(self, error_code)
return error_info_ctype.value.decode("ascii")
def _get_installed_device_attribute_vi_string(self, index,
attribute_id): # noqa: F811
# Do the IVI dance
# Don't use _handle_error, because positive value in error_code means size, not warning.
buffer_size = 0
value_ctype = ctypes.create_string_buffer(buffer_size)
error_code = self.library.niModInst_GetInstalledDeviceAttributeViString(
self.handle, index, attribute_id, buffer_size,
ctypes.cast(value_ctype,
ctypes.POINTER(ctypes_types.ViChar_ctype)))
if (errors._is_error(error_code)):
raise errors.Error(self, error_code)
buffer_size = error_code
value_ctype = ctypes.create_string_buffer(buffer_size)
error_code = self.library.niModInst_GetInstalledDeviceAttributeViString(
self.handle, index, attribute_id, buffer_size,
ctypes.cast(value_ctype,
ctypes.POINTER(ctypes_types.ViChar_ctype)))
errors._handle_error(self, error_code)
return value_ctype.value.decode("ascii")
def _get_installed_device_attribute_vi_string(self, handle, index,
attribute_id):
attribute_value_buffer_size = 0
attribute_value_ctype = ctypes.cast(
ctypes.create_string_buffer(attribute_value_buffer_size),
ctypes_types.ViString_ctype)
error_code = self.library.niModInst_GetInstalledDeviceAttributeViString(
self.handle, index, attribute_id, attribute_value_buffer_size,
attribute_value_ctype)
# Don't use _handle_error, because positive value in error_code means size, not warning.
if (errors._is_error(error_code)):
raise errors.Error(self.library, self.vi, error_code)
attribute_value_buffer_size = error_code
attribute_value_ctype = ctypes.cast(
ctypes.create_string_buffer(attribute_value_buffer_size),
ctypes_types.ViString_ctype)
error_code = self.library.niModInst_GetInstalledDeviceAttributeViString(
self.handle, index, attribute_id, attribute_value_buffer_size,
attribute_value_ctype)
errors._handle_error(self, error_code)
return attribute_value_ctype.value.decode("ascii")
def _close_installed_devices_session(self, handle):
error_code = self.library.niModInst_CloseInstalledDevicesSession(
handle)
errors._handle_error(self, error_code)
return