Hi All, New to the Casper toolflow and hardware so please bear with us. We are trying to get up and running with the SNAP board by going through the tutorials from the 2018 workshop <https://github.com/casper-astro/tutorials_devel/tree/workshop2018>. We can compile and run tutorial 1 successfully, indicating that the toolflow and software versions are okay (hopefully).
Unfortunately, we are hitting a problem for* Tutorial 3 (Wideband Spectrometer)* After supplying a 10Mhz ref at 8dBm, we power up the snap and try to run the Python script with the precompiled .fpg file <https://github.com/casper-astro/tutorials_devel/tree/workshop2018/vivado/snap/tut_spec> : python snap_tut_spec.py '192.168.0.2' -b snap_tut_spec.fpg We hit an error when the script attempts: adc.init(samplingRate=sample_rate, numChannel=1, resolution=8) During this function call, we notice that the *Ethernet connection between the RPi and PC drops for a few seconds* and then we get this error (extended error message at the end): KatcpRequestFail: Request write on host 192.168.0.2 failed. Request: ?write adc16_controller 0 \0\0 Reply: !write fail We tried extending the timeout period but this doesn't seem to help. We first tried using casperfpga libraries from casper-astro github (pointed to from the casper-astro/tutorials_devel <https://github.com/casper-astro/tutorials_devel/tree/workshop2018>) We then tried using casperfpga libraries from ska-sa github (master <https://github.com/ska-sa/casperfpga>), but got the same errors. *which casperfpga should we be using?* We also tried compiling the given snap_tut_spec.slx but still get the same errors when adc.init() is invoked. Right now, we cannot isolate the problem. We are not sure whether it's coming from the Linux PC, the RPi or the snap board running snap_tut_spec.fpg. But the errors indicate some sort of *katcp problem when reading/writing to adc chips*. Any suggestions will be great! HARDWARE: - SNAP ver2.1.1 - Raspberry Pi 3 model B - Laptop SOFTWARE: - Ubuntu 16.04 xenial 64bit - Raspberry Pi 3 image from https://casper.ssl.berkeley.edu/wiki/SNAP_Bringup#Configuring_a_SNAP_Raspberry_Pi - https://github.com/casper-astro/tutorials_devel/tree/workshop2018 - https://github.com/casper-astro/casperfpga (commit* ee9c43f*) - also tried https://github.com/ska-sa/casperfpga (commit * 284a4ba*) ERROR MESSAGES: brad (workshop2018 *) tut_spec $ python snap_tut_spec.py '192.168.0.2' -b snap_tut_spec.fpg Connecting to server 192.168.0.2 on port 7147... ok ------------------------ Programming FPGA with snap_tut_spec.fpg... done Attempting to initialize ADC chips... attempt number 0 *<-- added print statement to script here* Traceback (most recent call last): File "snap_tut_spec.py", line 109, in <module> if adc.init(samplingRate=800, numChannel=1, resolution=8) == 0: File "build/bdist.linux-x86_64/egg/casperfpga/snapadc.py", line 139, in init File "build/bdist.linux-x86_64/egg/casperfpga/adc.py", line 147, in init File "build/bdist.linux-x86_64/egg/casperfpga/adc.py", line 398, in reset File "build/bdist.linux-x86_64/egg/casperfpga/adc.py", line 180, in write File "build/bdist.linux-x86_64/egg/casperfpga/adc.py", line 173, in _wordCtrl File "build/bdist.linux-x86_64/egg/casperfpga/adc.py", line 163, in _bitCtrl File "build/bdist.linux-x86_64/egg/casperfpga/wishbonedevice.py", line 8, in _write File "build/bdist.linux-x86_64/egg/casperfpga/casperfpga.py", line 404, in write_int File "build/bdist.linux-x86_64/egg/casperfpga/casperfpga.py", line 151, in blindwrite File "build/bdist.linux-x86_64/egg/casperfpga/transport_katcp.py", line 290, in blindwrite File "build/bdist.linux-x86_64/egg/casperfpga/transport_katcp.py", line 175, in katcprequest casperfpga.transport_katcp.KatcpRequestFail: Request write on host 192.168.0.2 failed. Request: ?write adc16_controller 0 \0\0 Reply: !write fail Request\_write\_timed\_out\_after\_10.005977\_seconds. *Running script without clock source* brad (workshop2018 *) tut_spec $ python snap_tut_spec.py '192.168.0.2' -b snap_tut_spec.fpg Connecting to server 192.168.0.2 on port 7147... ok ------------------------ Programming FPGA with snap_tut_spec.fpg... done Attempting to initialize ADC chips... attempt number 0 ERROR:root:LMX2581 not locked attempt number 1 ERROR:root:LMX2581 not locked attempt number 2 ERROR:root:LMX2581 not locked done (took 3 attempts) Failed to calibrate after 3 attempts Traceback (most recent call last): File "snap_tut_spec.py", line 115, in <module> exit_clean() NameError: name 'exit_clean' is not defined -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected].
