working on getting stepper signals out of mesa 6i24 board

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22 Apr 2020 01:42 #165027 by owhite
Hey people I loaded a custom bitfile into my 6i24 board with stepgens in the config file. I would like to do a test to create a bare bones stepper output on some of the pins. Let's go through some halcmds...

$ halcmd -kf

loadrt hostmot2
loadrt hm2_pci
loadrt threads name1=card_thread period1=1000000
addf hm2_5i24.0.read  card_thread
addf hm2_5i24.0.write card_thread
start

show pin hm2_5i24.0.stepgen.00
Component Pins:
Owner   Type  Dir         Value  Name
     9  bit   IN          FALSE  hm2_5i24.0.stepgen.00.control-type
     9  s32   OUT             0  hm2_5i24.0.stepgen.00.counts
     9  float OUT             0  hm2_5i24.0.stepgen.00.dbg_err_at_match
     9  float OUT             0  hm2_5i24.0.stepgen.00.dbg_ff_vel
     9  float OUT             0  hm2_5i24.0.stepgen.00.dbg_pos_minus_prev_cmd
     9  float OUT             0  hm2_5i24.0.stepgen.00.dbg_s_to_match
     9  s32   OUT             0  hm2_5i24.0.stepgen.00.dbg_step_rate
     9  float OUT             0  hm2_5i24.0.stepgen.00.dbg_vel_error
     9  bit   IN          FALSE  hm2_5i24.0.stepgen.00.enable
     9  float IN              0  hm2_5i24.0.stepgen.00.position-cmd
     9  float OUT             0  hm2_5i24.0.stepgen.00.position-fb
     9  float IN              0  hm2_5i24.0.stepgen.00.velocity-cmd
     9  float OUT             0  hm2_5i24.0.stepgen.00.velocity-fb

my question is what commands should I run to see look at step and direction using and oscilloscope? The following did not seem to work:
setp hm2_5i24.0.stepgen.00.step_type 0
setp hm2_5i24.0.stepgen.00.velocity-cmd 12.0
setp hm2_5i24.0.stepgen.00.enable true 

Any suggestions? THANKS!

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22 Apr 2020 01:57 #165028 by PCW
Try setting the step type to 1

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22 Apr 2020 02:12 #165031 by owhite
The line is just staying low. Other ideas?

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22 Apr 2020 02:28 #165032 by PCW
Sorry, not step type but rather control-type
The following user(s) said Thank You: owhite

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22 Apr 2020 02:32 #165033 by owhite
right again! Thank you.

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