Mesa 7i96s with 7i74 and additional pwmgen
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28 May 2026 19:02 #346710
by Lennart
Mesa 7i96s with 7i74 and additional pwmgen was created by Lennart
Hi,
I am currently running a 7i96S with a 7i74 sserial card (7i96s_7i74d.bin), but I need a second hardware PWM generator (pwmgen.01) on Step 5 (or any available physical Step pin) to modulate my Raycus fiber laser with a variable duty cycle. Is it possible to configure the 7i96s like that ?
I am currently running a 7i96S with a 7i74 sserial card (7i96s_7i74d.bin), but I need a second hardware PWM generator (pwmgen.01) on Step 5 (or any available physical Step pin) to modulate my Raycus fiber laser with a variable duty cycle. Is it possible to configure the 7i96s like that ?
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28 May 2026 21:05 - 28 May 2026 23:14 #346713
by PCW
Replied by PCW on topic Mesa 7i96s with 7i74 and additional pwmgen
7I96S+7I74 firmware with Step4 (last stepgen of 0..4) replaced with PWM 1
(Dir 4 is just GPIO)
(Dir 4 is just GPIO)
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Last edit: 28 May 2026 23:14 by PCW.
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29 May 2026 10:39 #346727
by Lennart
Replied by Lennart on topic Mesa 7i96s with 7i74 and additional pwmgen
Great! Thank you very much!
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02 Jun 2026 17:21 #346854
by Lennart
Replied by Lennart on topic Mesa 7i96s with 7i74 and additional pwmgen
Hello again,Somehow I'm struggling to flash the configuration:returns a success message, but runningafterwards shows absolutely no change.I've tried it with my newly generated bin file (), but also with various other configurations. I made sure to executeand also did several hard power cycles (power resets). I checked the board status using, and it looks like fallback is not active.Does anyone have an idea what could be blocking the update, or what I might be missing?
I attached my terminal outputs.Thanks in advance!
mesaflash --write--readhmid7i96s2p_7i74d.bin--reload--verboseI attached my terminal outputs.Thanks in advance!
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02 Jun 2026 17:40 #346856
by PCW
Replied by PCW on topic Mesa 7i96s with 7i74 and additional pwmgen
Not sure, works for me:
mesaflash --device 7i96s --addr 10.10.10.10 --write 7i96s2p_7i74d.bin --reload
md5sum 7i96s2p_7i74d.bin
b77b9faf82730e3acf82c2cdcba6e022 7i96s2p_7i74d.bin
mesaflash --device 7i96s --addr 10.10.10.10 --readhmid > 7i96s2p_7i74d.txt
gives me:
mesaflash --device 7i96s --addr 10.10.10.10 --write 7i96s2p_7i74d.bin --reload
md5sum 7i96s2p_7i74d.bin
b77b9faf82730e3acf82c2cdcba6e022 7i96s2p_7i74d.bin
mesaflash --device 7i96s --addr 10.10.10.10 --readhmid > 7i96s2p_7i74d.txt
gives me:
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