Re: Multiple PicoScopes on one PC using API

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timyin
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Joined: Fri Oct 26, 2018 3:43 pm

Re: Multiple PicoScopes on one PC using API

Post by timyin »

Hi All,

Now in the lab have i only two 3403D devices with the Ubuntu PC available. So i have download the SDK and test a autoScope Programm. The Problem is status["GetValues"] 37 not 0. :cry:

Code: Select all

/usr/bin/python3.6 /home/timyin/Desktop/FA/picosdk-python-wrappers-master/ps3000aExamples/autoScope.py
b'GO7680079'
b'GO7680025'
{'openunit': 0} c_short(1)
{'openunit': 0}
{'openunit': 0} c_short(2)
{'openunit': 0}
the threshold of Trigger D in 3000.000000 mV is to ADC 9754
the threshold of Trigger D2 in 3000.000000 mV is to ADC 9754
the time, that the scope will spend collecting samples in (c_int(1003)) ms
the time, that the scope2 will spend collecting samples in (c_int(1003)) ms
{'openunit': 0, 'setChA': 0, 'setChB': 0, 'setChC': 0, 'setChD': 0, 'maximumValue': 0, 'triggerD': 0, 'GetTimebase': 0, 'runblock': 0, 'SetDataBuffers': 0, 'isReady': 0, 'GetValues': 37} {'openunit': 0, 'setChA': 0, 'setChB': 0, 'setChC': 0, 'setChD': 0, 'maximumValue': 0, 'triggerD': 0, 'GetTimebase': 0, 'runblock': 0, 'SetDataBuffers': 0, 'isReady': 0}
Traceback (most recent call last):
  File "/home/timyin/Desktop/FA/picosdk-python-wrappers-master/ps3000aExamples/autoScope.py", line 464, in 
    runScope()
  File "/home/timyin/Desktop/FA/picosdk-python-wrappers-master/ps3000aExamples/autoScope.py", line 342, in runScope
    assert_pico_ok(status["GetValues"])
  File "/home/timyin/Desktop/FA/picosdk-python-wrappers-master/picosdk/functions.py", line 146, in assert_pico_ok
    raise BaseException("Pico_OK not returned")
BaseException: Pico_OK not returned

Process finished with exit code 1
Here is a part of my autoScope Code

Code: Select all

 # Checks data collection to finish the capture
    ready = c_int16(0)
    check = c_int16(0)
    ready2 = c_int16(0)
    check2 = c_int16(0)
    while ready.value == check.value and ready2.value == check2.value:
        status["isReady"] = ps.ps3000aIsReady(chandle, byref(ready))
        status2["isReady"] = ps.ps3000aIsReady(chandle2, byref(ready2))


    # Handle = chandle
    # start index = 0
    # noOfSamples = byref(cmaxSamples)
    # DownSampleRatio = 0
    # DownSampleRatioMode = 0
    # SegmentIndex = 0
    # Overflow = byref(overflow)

    status["GetValues"] = ps.ps3000aGetValues(chandle, 0, byref(cmaxSamples), 0, 0, 0, byref(overflow))
    print(status, status2)
    assert_pico_ok(status["GetValues"])

    status2["GetValues"] = ps.ps3000aGetValues(chandle2, 0, byref(cmaxSamples2), 0, 0, 0, byref(overflow2))
    print(status, status2)
    assert_pico_ok(status2["GetValues"])
Thanks for any help :lol:

Hitesh

Re: Multiple PicoScopes on one PC using API

Post by Hitesh »

Hi timyin,

The status code indicates that no samples are available.

Please check to see if the respective devices are ready before you attempt to retrieve the data from them.

Regards,

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