From 05c2df1237d9539808cb2dd8eda0d445485f2812 Mon Sep 17 00:00:00 2001
From: tmk <hasu@tmk-kbd.com>
Date: Wed, 8 Apr 2020 17:48:20 +0900
Subject: [PATCH] sun_usb: Update README and rename to .md

---
 converter/sun_usb/{README => README.md} | 67 +++++++++++++++----------
 1 file changed, 40 insertions(+), 27 deletions(-)
 rename converter/sun_usb/{README => README.md} (59%)

diff --git a/converter/sun_usb/README b/converter/sun_usb/README.md
similarity index 59%
rename from converter/sun_usb/README
rename to converter/sun_usb/README.md
index 405a86ba..e65e2bcd 100644
--- a/converter/sun_usb/README
+++ b/converter/sun_usb/README.md
@@ -1,30 +1,31 @@
 Sun to USB keyboard protocol converter
 ======================================
-Target MCU is ATMega32u4 but other USB capable AVR will also work.
+Target MCU is ATMega32u2/4 but other USB capable AVR will also work.
 
 This converter will work with Sun Type 2-5 Keyboards.
 
 
-Tested on:
-Sun Type 3 Keyboard: http://blog.daveastels.com.s3-website-us-west-2.amazonaws.com/2014/12/27/type-3-keyboard.html
-CTCSP SHORT TYPE KEYBOARD(Type 5): http://imgur.com/a/QIv6p
+Check wiki pages for other information about TMK keyobard firware.
 
+https://github.com/tmk/tmk_keyboard/wiki
 
-Keymap of Type 3(keymap_sun3.c) were impoted from dastels's repository.
-https://github.com/dastels/tmk_keyboard/tree/master/converter/sun3_usb
 
+Update
+------
+2020-04-08 Added unimap support
 
 
 Connector
 ---------
-  8Pin mini DIN
-     ___ ___
-    /  |_|  \
-   / 8  7  6 \
-  | 5    4  3 |
-   \_ 2   1 _/
-     \_____/  
-   (receptacle)
+Modern Type 4 and 5 keyboards uses 8Pin mini DIN.
+
+       ___ ___
+      /  |_|  \
+     / 8  7  6 \
+    | 5    4  3 |
+     \_ 2   1 _/
+       \_____/  
+     (receptacle)
 
     Wiring:
     Pin mini DIN        MCU
@@ -42,18 +43,19 @@ Connector
 Protocol
 --------
 Signal: Asynchronous, Negative logic, 1200baud, No Flow control
+
 Frame format: 1-Start bit, 8-Data bits, No-Parity, 1-Stop bit
 
-    AVR USART engine expects positive logic while Sun keyboard signal is negative.
-    To use AVR UART engine you need external inverter in front of RX and TX pin.
-    Otherwise you can software serial routine to communicate the keyboard.
+AVR USART engine expects positive logic while Sun keyboard signal is negative.
+To use AVR UART engine you need external inverter in front of RX and TX pin.
+Otherwise you can use software serial to communicate the keyboard.
+
+This firmware uses software serial by default, so you don't need any inverter.
+It can be still built with 'make HARDWARE_SERIAL=y' to enable hardware serial if you have inverter. You can use 74LS04 for example.
 
-This converter uses software method by default, so you don't need any inverter part.  But
-it can also be built with 'make HARDWARE_SERIAL=y' to enable hardware serial if there
-is an inverter present.  Good results have been obtained using a 74LS04 and hardware serial.
 
+### Commands From System To Keyboard
 
-Commands From System To Keyboard
     0x01 Reset
             Keyboard responds with following byte sequence:
             Success: 0xFF 0x04 0x7F
@@ -69,27 +71,29 @@ Commands From System To Keyboard
     0x0F Layout
             Keyboard responds with 'Layout Response' 0xFE 0xXX
 
-Commands From Keyboard To System
+### Commands From Keyboard To System
     0x7F Idle
             means no keys pressed.
     0xFE Layout Response
     0xFF Reset Response(followed by 0x04)
      
-Reference
-    http://kentie.net/article/sunkbd/page2.htm
-    http://kentie.net/article/sunkbd/KBD.pdf
+### Reference
+- http://kentie.net/article/sunkbd/page2.htm
+- http://kentie.net/article/sunkbd/KBD.pdf
 
 
 Build Firmware
 --------------
 Just use 'make'
+
     $ cd sun_usb
     $ make
+
 Then, load the binary to MCU with your favorite programmer.
 
 
-Sun commands
-------------
+Keyboard Control
+----------------
 You can send Sun protocol commands with TMK `Magic` key combo. By default `Magic` key is `LShift` + `RShift`, `LAlt` + `RAlt' or `LMeta` + `RMeta`.
 https://github.com/tmk/tmk_keyboard#magic-commands
 
@@ -106,3 +110,12 @@ PgDown: LED all On
 Insert: Layout
 Delete: Reset
 ```
+
+
+Tested on
+---------
+### Type 3
+http://blog.daveastels.com.s3-website-us-west-2.amazonaws.com/2014/12/27/type-3-keyboard.html
+
+### CTCSP SHORT TYPE KEYBOARD(Type 5)
+http://imgur.com/a/QIv6p
-- 
2.46.2