Atreus rules.mk and readme (#5678)

* Update rules and readme to reflect new make usage.

* Minor edit.

* Minor edit.

2 files changed, 54 insertions, 44 deletions

diff --git a/keyboards/atreus/readme.md b/keyboards/atreus/readme.md
index 50901ee32..5cd797da9 100644
--- a/keyboards/atreus/readme.md
+++ b/keyboards/atreus/readme.md
@@ -1,21 +1,24 @@
 Atreus
-===
+======
 
 A small mechanical keyboard that is based around the shape of the human hand.
 
-These configuration files are specifically for the Atreus keyboards created by Phil Hagelberg (@technomancy). This keyboard is available in two variants: one powered by a Teensy 2, (usually hand-wired) one powered by an A-Star. (usually using a PCB) This repository currently assumes that you have an A-Star powered Atreus. If you are using a Teensy2, specify that by adding `TEENSY2=yes` to your `make` commands.
-
 Keyboard Maintainer: [Phil Hagelberg](https://github.com/technomancy)  
 Hardware Supported: Atreus, PCB-based or hand-wired  
 Hardware Availability: https://atreus.technomancy.us
 
-Make example for this keyboard (after setting up your build environment):
+These configuration files are specifically for the Atreus keyboards created by Phil Hagelberg (@technomancy). This keyboard is available in two variants: one powered by a Teensy 2 (usually hand-wired), one powered by an A-Star (usually using a PCB). You will need to use different `make` commands depending on the variant you have; see examples below.
+
+A-Star:\
+`make atreus:default:avrdude`
 
-    make atreus:default:avrdude
+Teensy:\
+`make TEENSY2=yes atreus:default:teensy`
+ 
+If your keyboard layout is a mirror image of what you expected (i.e. you do not get QWERTY on the left but YTREWQ on the right), then you have an A-Star powered Atreus (older than March 2016) with PCB labels facing *down* instead of up. Specify that by adding `PCBDOWN=yes` to your `make` commands, e.g.
 
-Unlike the TMK firmware, this command should be run from the root of
-the repository, not the directory containing this readme.
+`make PCBDOWN=yes atreus:default:avrdude`
 
-If your keyboard layout is a mirror image of what you expected (i.e. you do not get QWERTY on the left but YTREWQ on the right), then you have an A-Star powered Atreus (older than March 2016) with PCB labels facing *down* instead of up. Specify that by adding `PCBDOWN=yes` to your `make` commands.
+*Unlike the TMK firmware, these commands should be run from the root of the repository, not the directory containing this readme.*
 
-See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
+See [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools), then the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information.
diff --git a/keyboards/atreus/rules.mk b/keyboards/atreus/rules.mk
index 2488fd5e8..eda77404a 100644
--- a/keyboards/atreus/rules.mk
+++ b/keyboards/atreus/rules.mk
@@ -1,19 +1,4 @@
-
-
-ifdef TEENSY2
-    OPT_DEFS += -DATREUS_TEENSY2
-    ATREUS_UPLOAD_COMMAND = teensy_loader_cli -w -mmcu=$(MCU) $(TARGET).hex
-else
-    OPT_DEFS += -DATREUS_ASTAR
-ifdef PCBDOWN
-    OPT_DEFS += -DPCBDOWN
-endif
-    ATREUS_UPLOAD_COMMAND = while [ ! -r $(USB) ]; do sleep 1; done; \
-                            avrdude -p $(MCU) -c avr109 -U flash:w:$(TARGET).hex -P $(USB)
-endif
-
 # MCU name
-#MCU = at90usb1287
 MCU = atmega32u4
 
 # Processor frequency.
@@ -48,34 +33,56 @@ ARCH = AVR8
 #     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
 F_USB = $(F_CPU)
 
-# Bootloader
-#     This definition is optional, and if your keyboard supports multiple bootloaders of
-#     different sizes, comment this out, and the correct address will be loaded 
-#     automatically (+60). See bootloader.mk for all options.
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+
+# Bootloader selection
+#   Teensy       halfkay
+#   Pro Micro    caterina
+#   Atmel DFU    atmel-dfu
+#   LUFA DFU     lufa-dfu
+#   QMK DFU      qmk-dfu
+#   atmega32a    bootloadHID
 ifdef TEENSY2
     BOOTLOADER = halfkay
+    OPT_DEFS += -DATREUS_TEENSY2
 else
     BOOTLOADER = caterina
+    OPT_DEFS += -DATREUS_ASTAR
+    ifdef PCBDOWN
+        OPT_DEFS += -DPCBDOWN
+    endif
 endif
 
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+# If you don't know the bootloader type, then you can specify the
+# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
+#   Teensy halfKay      512
+#   Teensy++ halfKay    1024
+#   Atmel DFU loader    4096
+#   LUFA bootloader     4096
+#   USBaspLoader        2048
+# OPT_DEFS += -DBOOTLOADER_SIZE=4096
 
 
 # Build Options
-#   comment out to disable the options.
+#   change yes to no to disable
 #
-#BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE = yes	# Mouse keys(+4700)
-EXTRAKEY_ENABLE = yes	# Audio control and System control(+450)
-CONSOLE_ENABLE = yes	# Console for debug(+400)
-COMMAND_ENABLE = yes    # Commands for debug and configuration
+BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = yes        # Console for debug(+400)
+COMMAND_ENABLE = yes        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
-# SLEEP_LED_ENABLE = yes  # Breathing sleep LED during USB suspend
-NKRO_ENABLE = yes		# USB Nkey Rollover - not yet supported in LUFA
-# BACKLIGHT_ENABLE = yes  # Enable keyboard backlight functionality
-# MIDI_ENABLE = YES 		# MIDI controls
-UNICODE_ENABLE = YES 		# Unicode
-# BLUETOOTH_ENABLE = yes # Enable Bluetooth with the Adafruit EZ-Key HID
-
-USB = /dev/cu.usbmodem1411
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes            # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+MIDI_ENABLE = no            # MIDI support (+2400 to 4200, depending on config)
+UNICODE_ENABLE = yes         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no           # Audio output on port C6
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no 		# Enable support for HD44780 based LCDs (+400)