The ODrive Tool is the accompanying PC program for the ODrive. It’s main purpose is to provide an interactive shell to control the device manually, as well as some supporting functions like firmware update.
Refer to the Getting Started guide.
odrivetool --help to see what features are available.
odrivetool will connect to any ODrive it finds. If this is not what you want, you can select a specific ODrive.
To find the serial number of your ODrive, run
odrivetool, connect exactly one ODrive and power it up. You should see this:
Connected to ODrive 306A396A3235 as odrv0 In :
306A396A3235 is the serial number of this particular ODrive. If you want ODrive Tool to ignore all other devices you would close it and then run
odrivetool --serial-number 306A396A3235.
Yes, the serial number is part of the USB descriptors.
In Linux you can find it by running:
$ (sudo lsusb -d 1209:0d32 -v; sudo lsusb -d 0483:df11 -v) 2>/dev/null | grep iSerial iSerial 3 385F324D3037 iSerial 3 306A396A3235
Here, two ODrives are connected.
You can use ODrive Tool to back up and restore device configurations or transfer the configuration of one ODrive to another one.
odrivetool backup-config my_config.json.
odrivetool restore-config my_config.json.
To update the ODrive to the newest firmware release, simply open up a terminal and run the following command:
~ $ odrivetool dfu ODrive control utility v0.3.7.dev Waiting for ODrive... Found ODrive 308039673235 (v3.5-24V) with firmware v0.3.7-dev Checking online for newest firmware... found v0.3.7 Downloading firmware... Putting device 308039673235 into DFU mode... Erasing... done Flashing... done Verifying... done
Note that this command will connect to GitHub servers to retrieve the latest firmware.
If you have a non-default configuration saved on the device, ODrive Tool will try to carry over the configuration across the firmware update. If any of the settings are removed or renamed, you will get warning messages.
If you want to flash a specific firmware file instead of automatically downloading one, you can run
odrivetool dfu path/to/firmware/file.hex
You can download one of the officially released firmware files from here. You will need one of the .hex files (not the .elf file). Make sure you select the file that matches your board version.
To compile firmware from source, refer to the developer guide.
If the DFU script can’t find the device, try forcing it into DFU mode.
Flick the DIP switch that “DFU, RUN” to “DFU” and power cycle the board. After you’re done, put the switch back into the “RUN” position and power cycle the board again.
Connect the pin “BOOT0” to “3.3V” and power cycle the board. If that alone doesn’t work, also connect the pin “GPIO1” to “GND”. After you’re done, remove the wires and power cycle the board again.
Some people have had issues using the python dfu tool, so below is a guide on how to manually use a different tool.
Before starting the below steps, you need to get firmware binary. You can download one of the officially released firmware files from here. Make sure you select the file that matches your board version, and that you get the .hex file (not the .elf file).
To compile firmware from source, refer to the developer guide.
You can use the DfuSe app from ST.
DfuFileMgr.exewhich probably got added to the start menu as “Dfu file manager”.
ODriveFirmware.hexfile you built or downloaded.
ODriveFirmware.dfu. Note that the success message has a warning sign for some reason…
DfuSeDemo.exewhich probably got added to the start menu as “DfuSeDemo”.
ODriveFirmware.dfuwe made before.
This section needs more detail. Please consider adding detail if you got it to work. You may be able to use dfu-util to upgrade the firmware. You will need to convert the .hex file to a .dfu file. You may be able to do it with the python script dfu-convert or the c program hex2dfu.
You probably need to force DFU mode, as per the instructions above.
This procedure is only necessary for ODrive v3.4 or earlier. You will need an STLink/v2 or compatible programmer. You should have received one with your ODrive.
sudo apt-get install openocd
brew install openocd
ODriveFirmware_v3.4-24V.elfwith the name of your firmware file):
openocd -f interface/stlink-v2.cfg -f target/stm32f4x.cfg -c init -c "reset halt" -c "flash write_image erase ODriveFirmware_v3.4-24V.elf" -c "reset run" -c exit
If everything worked correctly, you should see something similar to this towards the end of the printout:
wrote 262144 bytes from file ODriveFirmware_v3.4-24V.elf in 10.194110s (25.113 KiB/s)
If something doesn’t work, make sure
openocd is in your
PATH variable, check that the wires are connected properly and try with elevated privileges.
Liveplotter is used for the graphical plotting of odrive parameters (i.e. position) in real time. To start liveplotter, close any other instances of liveplotter and run
odrivetool liveplotter from a new anaconda prompt window. By defult two parameters are plotted on startup; the encoder positon of axis 1 and axis 2. In the below example the motors are running in
closed_loop_control while they are being forced off position by hand.
To change what parameters are plotted open odrivetool (located in Anaconda3\Scripts or ODrive-master\tools) with a text editor and modify the liveplotter function:
# If you want to plot different values, change them here. # You can plot any number of values concurrently. cancellation_token = start_liveplotter(lambda: [ my_odrive.axis0.encoder.pos_estimate, my_odrive.axis1.encoder.pos_estimate, ])
For example, to plot the approximate motor torque [N.cm] and the velocity [RPM] of axis1 with a 150KV motor and an 8192 count per rotation econder you would modify the function to read:
# If you want to plot different values, change them here. # You can plot any number of values concurrently. cancellation_token = start_liveplotter(lambda: [ (((my_odrive.axis0.encoder.pll_vel)/8192)*60), # 8192 CPR encoder ((8.27*my_odrive.axis0.motor.current_control.Iq_setpoint/150) * 100), # Torque [N.cm] = (8.27 * Current [A] / KV) * 100 ])
In the example below the motor is forced off axis by hand and held there. In response the motor controller increases the torque (orange line) to counteract this disturbance up to a peak of 500 N.cm at which point the motor current limit is reached. When the motor is released it returns back to its commanded position very quickly as can be seen by the spike in the motor velocity (blue line).
To change the scale and sample rate of the plot modify the following parameters located at the beginning of utils.py (located in Anaconda3\Lib\site-packages\odrive):
data_rate = 100 plot_rate = 10 num_samples = 1000
For more examples on how to interact with the plotting functinality refer to the Matplotlib examples.
You can also run
start_liveplotter(...) directly from the interactive odrivetool prompt. This is useful if you want to issue commands or otherwise keep interacting with the odrive while plotting.
For example you can type the following directly into the interactive prompt:
start_liveplotter(lambda: [odrv0.axis0.encoder.pos_estimate]). Just like the examples above, you can list several parameters to plot separated by comma in the square brackets.
In general, you can plot any variable that you are able to read like normal in odrivetool.