{"id":149,"date":"2023-11-01T21:21:56","date_gmt":"2023-11-01T12:21:56","guid":{"rendered":"http:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/?p=149"},"modified":"2023-11-02T13:30:48","modified_gmt":"2023-11-02T04:30:48","slug":"using-sun-type-5-mouse-in-modern-linux","status":"publish","type":"post","link":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/?p=149","title":{"rendered":"Using Sun Type 5 Mouse in Modern Linux"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

Back Story<\/h2>\n\n\n\n

In 2022 Osaka Japan, I found sun type 5 mechanical mouse in secondhand PC shop. I heard that in early 2000s, there were tons of sun’s and other (non IBM PC) computer peripherals available at very low price. It was good days, though I do not know about such era. Now, after 20 years, it is rare to see these kind of old PC parts in the store. The Price? It’s only 500 yen ( about 3 USD) ! I got it!! ….wait, how can I hook this up to my computer? <\/p>\n\n\n\n

\"\"
“Bus and Tag” A long-established secondhand computer store in Osaka, Japan. There are many old computer parts including NEC PC-9801 series that you can hard to see even in Akihabara, Tokyo.<\/figcaption><\/figure>\n\n\n\n

Connector <\/h2>\n\n\n\n

It is mini-DIN 8pin connector, but only 3 of them exists. Pin 2 is GND, Pin4 is RX, Pin 3 is 5V Vcc.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Protocol<\/h2>\n\n\n\n

Basicaly, it is normal TTL-UART serial style mouse. Asynchronous, 1200bps, no parity, 1 start bit,8 data bit, 1 stopbit.<\/p>\n\n\n\n

But, It is NEGATIVE LOGIC<\/strong> and 5V<\/strong> , unlike normal ttl-uart uses positive logic and 3V signals.<\/p>\n\n\n\n

I don’t describe more detail specification because there is no need to you know much about protocol if you are using Linux.(See below)<\/p>\n\n\n\n

Driver<\/h2>\n\n\n\n

Sun Type 5 mouse was used for SPARC station, and it runs Solaris, Solaris is kind of UNIX, and Linux is clone of UNIX, it naturally have mouse driver in its kernel. Therefore I need no micro controllers and no coding for firmware. Easy!<\/p>\n\n\n\n

Converter<\/h2>\n\n\n\n

So, all I had to do is 1. Invert the logic, 2. connect to TTL-USB adapter, 3.Connect to the computer and enable drivers.<\/p>\n\n\n\n

You need, 2x 1k\u03a9 Resister and 1 NPN-transistor , mini DIN 8pin socket and TTL-USB adapter<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Enabling Serial Mouse Driver<\/h2>\n\n\n\n
Bash<\/span><\/path><\/path><\/svg><\/span>
sudo<\/span> <\/span>inputattach<\/span> <\/span>--mousesystems<\/span> <\/span>--daemon<\/span> <\/span>\/dev\/ttyUSB0<\/span>  <\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Seeing inputattach help, there are two possible driver, –sunmouse and –mousesystems. Sunmouse is the sub set of MouseSystem    protocol, and type 5 mouse is actually sends MouseSystems Protocols, so I chose one.<\/p>\n\n\n\n
Xorg.conf should have responsibility to handle pointer devices, but I can not set up xorg.conf to enable serial mouse in start up. And Udev can run above comand when ttyUSB attached, unfortunately I could not make it work properly ,so I wrote a script and registered to xfce4 startups.<\/p>\n\n\n\n
Append<\/h2>\n\n\n\n
I wrote udev not working propely, but it is my fault.  Arch Linux Wiki says, <\/a>udev dose not spawn long running process such as inputattach daemon, so I fount correct way to auto starting.<\/p>\n\n\n\n
First, create systemd service, like \/etc\/systemd\/system\/sun-mouse-inputattach@.service<\/p>\n\n\n\n
\/etc\/systemd\/system\/sun-mouse-inputattach@.service<\/span><\/path><\/path><\/svg><\/span>
[<\/span>Unit<\/span>]<\/span><\/span>\nDescription<\/span>=<\/span>inputattach<\/span> <\/span>for<\/span> <\/span>sun<\/span> <\/span>serial<\/span> <\/span>mouse<\/span><\/span>\n<\/span>\n[<\/span>Service<\/span>]<\/span><\/span>\nType<\/span>=<\/span>simple<\/span><\/span>\nExecStart<\/span>=<\/span>\/usr\/bin\/inputattach<\/span> <\/span>--sunmouse<\/span> <\/span>\/dev\/%I<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Second, create udev rules<\/p>\n\n\n\n
\/etc\/udev\/rules.d\/100-serial-sun-mouse.rules<\/span><\/path><\/path><\/svg><\/span>
ACTION<\/span>=<\/span>=<\/span>"<\/span>add|change<\/span>"<\/span>,<\/span>  <\/span>KERNEL<\/span>=<\/span>=<\/span>"<\/span>ttyUSB[0-9]*<\/span>"<\/span>,<\/span> <\/span>TAG<\/span>+=<\/span>"<\/span>systemd<\/span>"<\/span>,<\/span> <\/span>ENV<\/span>{SYSTEMD_WANTS}<\/span>+<\/span>=<\/span>"sun-mouse-inputattach@%k.service"<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Finally, run <\/p>\n\n\n\n
Bash<\/span><\/path><\/path><\/svg><\/span>
udevadm<\/span> <\/span>control<\/span> <\/span>--reload<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n
Then, It works!<\/p>\n\n\n\n
However, almost all usb-ttl adapter has same chips, id, name, manufacture, so there are no way to distinguish them. This method will not work properly if you connect more than 2 usb-ttl adapters.<\/p>\n\n\n\n
<\/p>\n\n\n\n
Resources<\/h2>\n\n\n\n
Sun Keyboard Protocol<\/a><\/p>\n\n\n\n
PS\/2 to Sun mouse Converter<\/a><\/p>\n\n\n\n
Wacom Serial devices and inputattach in a systemd world<\/a><\/p>\n\n\n\n
Proper(-ish) way to start long-running systemd service on udev event (device hotplug)<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Back Story In 2022 Osaka Japan, I found sun type 5 mechanical mouse in secondhand PC shop. I heard that in ear […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"_links":{"self":[{"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/149"}],"collection":[{"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=149"}],"version-history":[{"count":5,"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/149\/revisions"}],"predecessor-version":[{"id":160,"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/149\/revisions\/160"}],"wp:attachment":[{"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/arei1126.ddns.net\/mozihakkou\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}