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Support for 837-15275 (stock touch slider) #11

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dogtopus opened this issue Jun 11, 2019 · 0 comments
Open

Support for 837-15275 (stock touch slider) #11

dogtopus opened this issue Jun 11, 2019 · 0 comments
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enhancement New feature or request
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@dogtopus
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dogtopus commented Jun 11, 2019

Protocol is documented here (Japanese): http://ryun.halfmoon.jp/touchslider/slider_protocol.html

Logic analyzer captures found on the previous page (converted to sigrok format): slider_cap.zip

Seems to be another SEGA hardware that uses JVS-esque protocol but with 0xff, 0xfd as the sync and escape word instead of the regular 0xe0, 0xd0. This is probably an attempt to avoid protocol overhead caused by frequently escaping bytes in the touch/LED reports.

The signaling is RS232. An RS232-UART adapter would be required.

The protocol itself is simple enough, although ensure proper timing might still be a challenge (takes ~8.7 ms for the host to push out a complete LED report, which would stall the scanning task badly if using naive timing).

@dogtopus dogtopus added the enhancement New feature or request label Jun 11, 2019
@dogtopus dogtopus added this to the 9999 milestone Jun 25, 2019
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