mesa datapainter
25 Jul 2018 04:00 #114791
by vre
mesa datapainter was created by vre
I have installed xilinx ise 14.7 and i know how to build mesa firmware
but i don't know how to build a firmware that has datapainter module for rf laser.
rf laser needs tickle signal (5khz 1us pulse width for synrad 48-2 series tubes for preionization of the laser.Without this signal laser tube will damaged according to manual) and modulation for example is done by 5khz pwm 0%-99% duty cycle.
I want datapainter module for raster engaving at constant speed.
Can someone help me how to do this setup (build firmware & linuxcnc configuration)
I have 7i80hd and i want 3 pwm generators, 3 encoder readers, 1 step-dir, datapainter and the rest GPIO
but i don't know how to build a firmware that has datapainter module for rf laser.
rf laser needs tickle signal (5khz 1us pulse width for synrad 48-2 series tubes for preionization of the laser.Without this signal laser tube will damaged according to manual) and modulation for example is done by 5khz pwm 0%-99% duty cycle.
I want datapainter module for raster engaving at constant speed.
Can someone help me how to do this setup (build firmware & linuxcnc configuration)
I have 7i80hd and i want 3 pwm generators, 3 encoder readers, 1 step-dir, datapainter and the rest GPIO
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27 Jul 2018 17:29 - 27 Jul 2018 17:30 #114968
by andypugh
Replied by andypugh on topic mesa datapainter
It's probably easier to see if PCW has a firmware.
Then you need to work on driver support.
Luckily there are lots of example drivers.
Look at led.c as the simplest one
github.com/LinuxCNC/linuxcnc/blob/master.../mesa-hostmot2/led.c
You need entries in hostmot2.c
github.com/LinuxCNC/linuxcnc/blob/master...mot2/hostmot2.c#L273
including a new GTAG type
Then the Mesa firmware "regmap" file contains the rest of the information required, ie what the register-level interface of the FPGA looks like.
However I can't see the data painter module in the regmap.
Then you need to work on driver support.
Luckily there are lots of example drivers.
Look at led.c as the simplest one
github.com/LinuxCNC/linuxcnc/blob/master.../mesa-hostmot2/led.c
You need entries in hostmot2.c
github.com/LinuxCNC/linuxcnc/blob/master...mot2/hostmot2.c#L273
including a new GTAG type
Then the Mesa firmware "regmap" file contains the rest of the information required, ie what the register-level interface of the FPGA looks like.
However I can't see the data painter module in the regmap.
Last edit: 27 Jul 2018 17:30 by andypugh.
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27 Jul 2018 18:26 - 27 Jul 2018 23:43 #114975
by PCW
Replied by PCW on topic mesa datapainter
You would need the regmap file from a recent hostmot2 firmware source zipfile:
Edit: added real time PWM scaling ( RT_scale * FIFO_PWMVAL ) for velocity dependent
modulation of pattern intensity and idle (data gate off) PWM value
Edit: added real time PWM scaling ( RT_scale * FIFO_PWMVAL ) for velocity dependent
modulation of pattern intensity and idle (data gate off) PWM value
Last edit: 27 Jul 2018 23:43 by PCW.
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30 Jul 2018 12:01 #115118
by andypugh
Replied by andypugh on topic mesa datapainter
Thanks PCW
vre: Is the way forward fairly clear? If not, just ask. I have written a few drivers now.
(My very first bit of work on LinuxCNC, and the first time I had used C, was adding the led driver to Hostmot2. As a precursor to adding the 3-phase PWM)
Seb made a good job of covering for future expansion when he wrote the hostmot2 driver.
vre: Is the way forward fairly clear? If not, just ask. I have written a few drivers now.
(My very first bit of work on LinuxCNC, and the first time I had used C, was adding the led driver to Hostmot2. As a precursor to adding the 3-phase PWM)
Seb made a good job of covering for future expansion when he wrote the hostmot2 driver.
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30 Jul 2018 19:51 #115167
by vre
Replied by vre on topic mesa datapainter
I have good java knowledge but very little at c.
I must read pointers/memory allocation/release/data structures in c before any modification.
Code seems to be near asm i had forgotten that exists goto in c.
I must read pointers/memory allocation/release/data structures in c before any modification.
Code seems to be near asm i had forgotten that exists goto in c.
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