Seweee

Hey @Fausto, I am using Ubuntu 22.04 LTS and libuldaq-1.2.1. However, my Ubuntu OS is running as a VirtualBox VM, which has not caused any problems with my other MCC devices.

Hey @Fausto, I am using Ubuntu 22.04 LTS and libuldaq-1.2.1. However, my Ubuntu OS is running as a VirtualBox VM, which has not caused any problems with my other MCC devices..

Hey, I have a rather interesting problem when trying to use a_in_scan with my USB-1608GX-2AO device. I am using the python uldaq library and have written a small script to test the a_in_scan function as I need it for a larger application: import numpy as np from icecream import ic from uldaq import (get_daq_device_inventory, DaqDevice, InterfaceType, AiInputMode, Range, AInFlag, AInScanFlag, create_float_buffer, ScanOption) # Get a list of available DAQ devices ic("Start") devices = get_daq_device_inventory(InterfaceType.USB) # Create a DaqDevice Object and connect to the device daq_device = DaqDevice(devices[0]) daq_device.connect() ic("Connected") # Get AiDevice and AiInfo objects for the analog input subsystem ai_device = daq_device.get_ai_device() # Sample acquisition rate in Hz rate = 200 # Number samples per channel. samples_per_channel = 200 # Number of channels, must agree with specification of low_channel and # high_channel below num_channels = 1 low_channel = 0 high_channel = 0 buffer = create_float_buffer(num_channels, samples_per_channel) actual_scan_rate = ai_device.a_in_scan( low_channel=low_channel, high_channel=high_channel, input_mode=AiInputMode.DIFFERENTIAL, analog_range=Range.BIP5VOLTS, samples_per_channel=samples_per_channel, rate=rate, options=ScanOption.DEFAULTIO, flags=AInScanFlag.DEFAULT, data=buffer) data = np.array(buffer[:]).reshape( (samples_per_channel, num_channels)).transpose() ic(data) ai_device.scan_stop() daq_device.disconnect() daq_device.release() The first time I run the script after physically connecting the device, it runs fine and returns the expected input value. However, when I try to run the script multiple times, it either immediately fails to connect to the device and returns the following error: uldaq.ul_exception.ULException: 8: Device no longer responding during the daq_device.connect() command in line 8. Or it returns an input value of 0 and the same error occurs in one of the following executions. After the error occurs, I have to physically reconnect the device. When trying other functions such as a_in() with this device, they work as intended, so I don't think my device itself is broken. I have also tried running the AInScan.c example provided by libuldaq, where the device shows exactly the same behaviour. The first time I run the example script everything is fine until I terminate the process and try to run it again where it gives the same error code I get with my own script. I have another MCC device, USB-2408-2AO, and have tried both my script and the AInScan.c example on this device. Both worked fine, so I am not really sure how to solve this problem. Is this a specific problem with the USB-1608GX device or am I missing something really basic here? Thanks in advance.