search

bitcraze / crazyflie-lib-python

Python library to communicate with Crazyflie
Other
250 stars 889 forks source link

Why it reminded me "Could not add Measurement log config, bad configuration"，when I added a new log variable ? #412

Closed czyv587 closed 1 year ago

czyv587 commented 1 year ago

I added the 3d tof driver in the crazyflie-firmware, I can see the log option on the crazy client, and I can also draw the curve, but adding the 3d tof log variable in crazyflie-lib-python\examples\multiranger\multiranger_pointcloud.py reminds me "Could not add Measurement log config, bad configuration". What is the reason? How should I modify it?Here is my code： `lmeas = LogConfig(name='Meas', period_in_ms=100)

lmeas.add_variable('range.front')

    # lmeas.add_variable('range.back')
    # lmeas.add_variable('range.up')
    # lmeas.add_variable('range.left')
    # lmeas.add_variable('range.right')
    # lmeas.add_variable('range.zrange')
    lmeas.add_variable('stabilizer.roll')
    lmeas.add_variable('stabilizer.pitch')
    lmeas.add_variable('stabilizer.yaw')
    lmeas.add_variable('tof.distance0', 'float')
    lmeas.add_variable('tof.distance2', 'float')
    lmeas.add_variable('tof.distance5', 'float')
    lmeas.add_variable('tof.distance6', 'float')
    lmeas.add_variable('tof.distance16', 'float')
    lmeas.add_variable('tof.distance32', 'float')
    lmeas.add_variable('tof.distance48', 'float')
    lmeas.add_variable('tof.distance57', 'float')
    lmeas.add_variable('tof.distance59', 'float')
    lmeas.add_variable('tof.distance61', 'float')
    lmeas.add_variable('tof.distance63', 'float')
    lmeas.add_variable('tof.distance47', 'float')
    lmeas.add_variable('tof.distance31', 'float')
    lmeas.add_variable('tof.distance15', 'float')

    try:
        self.cf.log.add_config(lmeas)
        lmeas.data_received_cb.add_callback(self.meas_data)
        lmeas.start()
    except KeyError as e:
        print('Could not start log configuration,'
              '{} not found in TOC'.format(str(e)))
    except AttributeError:
        print('Could not add Measurement log config, bad configuration.')`

efb0c2cffcbaee3d3c14665d7681993 96cd76f6c2225dd8434712f3899be5d 33661c0ea9626ee1d77275be8b4da1b

knmcguire commented 1 year ago

Hi! You are probably adding too many floats to the log config. As you already noticed in the cfclient, there is a limit on how many you can add, which are 26 bytes: https://www.bitcraze.io/documentation/repository/crazyflie-lib-python/master/user-guides/python_api/#variables-and-logging

czyv587 commented 1 year ago

Hi! You are probably adding too many floats to the log config. As you already noticed in the cfclient, there is a limit on how many you can add, which are 26 bytes: https://www.bitcraze.io/documentation/repository/crazyflie-lib-python/master/user-guides/python_api/#variables-and-logging

Thank you very much！！ your answer helped me to solve the problem！！