[Libnifalcon-devel] using latest libnifalcon & latest libusb on OS X

[Stephen S. <rad...@gm...>]

Here's a log of using libnifalcon on OS X (10.4.11, PowerPC)
Had some success, though some weirdness with loading the firmware with libusb.
Just thought I'd post my results to compare with others.

This was with the Falcon directly plugged into the computer:

bin$ ./falcon_test_cli --libftdi --device_index 0 --nvent_firmware
--loop_time_test --force_firmware
Setting up libftdi device
Loading firmware
Can't set firmware mode! 0 0
Could not load firmware
Firmware loaded
Loop time (in seconds): 4.00813
Loop time (in seconds): 4.0051
Loop time (in seconds): 4.00602
Loop time (in seconds): 4.00405
^CQuitting

This was using a USB powered hub:

bin$ ./falcon_test_cli --libftdi --device_index 0 --nvent_firmware
--cube_test
Setting up libftdi device
Falcon not currently homed. Move control all the way out then push
straight all the way in.
Falcon homed. Move control all the way in or out to start simulation.
Starting cube simulation.
Loop time (in seconds): 3.88175
Loop time (in seconds): 3.84922
Loop time (in seconds): 3.89114
Loop time (in seconds): 3.89115
Loop time (in seconds): 3.89715
^CQuitting
bin$ ./falcon_test_cli --libusb --device_index 0 --nvent_firmware --cube_test
Setting up libusb device
Falcon not currently homed. Move control all the way out then push
straight all the way in.
Falcon homed. Move control all the way in or out to start simulation.
Starting cube simulation.
Loop time (in seconds): 1.00112
Loop time (in seconds): 1.01109
Loop time (in seconds): 1.00211
Loop time (in seconds): 0.998243
Loop time (in seconds): 1.00708
Loop time (in seconds): 1.00424
Loop time (in seconds): 0.998172
Loop time (in seconds): 1.00821
Loop time (in seconds): 1.00612
Loop time (in seconds): 1.00211
Loop time (in seconds): 1.0011
^CQuitting

Better!  However, after unplugging and plugging the device back into
the computer directly, it seemed to be impossible to load the firmware
using libusb.  After loading it using libftdi, I was able to use
libusb with the same performance as with a USB hub:


bin$ ./falcon_test_cli --libusb --device_index 0 --nvent_firmware --cube_test
Setting up libusb device
Loading firmware
Firmware loaded
No firmware loaded to device, cannot continue
bin$ ./falcon_test_cli --libusb --device_index 0 --nvent_firmware
--cube_test --force_firmware
Setting up libusb device
Loading firmware
Firmware loaded
No firmware loaded to device, cannot continue
bin$ ./falcon_test_cli --libusb --device_index 0 --nvent_firmware
--cube_test --force_firmware
Setting up libusb device
Loading firmware
Firmware loaded
No firmware loaded to device, cannot continue
bin$ ./falcon_test_cli --libftdi --device_index 0 --nvent_firmware
--cube_test --force_firmware
Setting up libftdi device
Loading firmware
Can't set firmware mode! 0 0
Could not load firmware
Firmware loaded
Falcon not currently homed. Move control all the way out then push
straight all the way in.
Falcon homed. Move control all the way in or out to start simulation.
Starting cube simulation.
Loop time (in seconds): 4.00316
Loop time (in seconds): 4.00115
Loop time (in seconds): 4.00615
Loop time (in seconds): 4.00517
^CQuitting
bin$ ./falcon_test_cli --libusb --device_index 0 --nvent_firmware --cube_test
Setting up libusb device
Falcon not currently homed. Move control all the way out then push
straight all the way in.
Falcon homed. Move control all the way in or out to start simulation.
Starting cube simulation.
Loop time (in seconds): 1.00007
Loop time (in seconds): 1.00008
Loop time (in seconds): 1.01008
Loop time (in seconds): 0.999119
Loop time (in seconds): 0.999082
Loop time (in seconds): 1.00211
Loop time (in seconds): 0.999155
Loop time (in seconds): 0.998947
Loop time (in seconds): 0.999088
Loop time (in seconds): 1.0041
Loop time (in seconds): 0.999079
Loop time (in seconds): 1.0001
Loop time (in seconds): 0.999097
Loop time (in seconds): 1.00311
Loop time (in seconds): 1.00411
Loop time (in seconds): 0.999104
Loop time (in seconds): 0.999112
Loop time (in seconds): 1.0021
Loop time (in seconds): 0.999008
Loop time (in seconds): 1.00109
Loop time (in seconds): 0.999105
Loop time (in seconds): 1.00209
Loop time (in seconds): 1.0021
Loop time (in seconds): 0.999194
Loop time (in seconds): 1.00506
Loop time (in seconds): 1.00209
^CQuitting