Meira updates for bluetooth and audio (#2731)

* Add audio output

* Update Miera to fix bluetooth issues, bootloader definition.

* Added keymap with audio example

* Cleanup Meira audio code

keyboards/meira/rules.mk

@@ -4,19 +4,6 @@ SRC += matrix.c TWIlib.c issi.c lighting.c
 #MCU = at90usb1286
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
 
 #
 # LUFA specific
@@ -37,6 +24,12 @@ 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.
+BOOTLOADER = caterina
+
 # Interrupt driven control endpoint task(+60)
 OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
 
@@ -54,10 +47,10 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
 #   change yes to no to disable
 #
 BOOTMAGIC_ENABLE = no      # Virtual DIP switch configuration(+1000)
-MOUSEKEY_ENABLE = yes       # Mouse keys(+4700)
+MOUSEKEY_ENABLE = no       # 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
+CONSOLE_ENABLE = no        # Console for debug(+400)
+COMMAND_ENABLE = no        # Commands for debug and configuration
 # Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
 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
@@ -74,13 +67,13 @@ ISSI_ENABLE = yes			# If the I2C pullup resistors aren't install this must be di
 
 CUSTOM_MATRIX = yes
 
-ifeq ($(strip $(ISSI_ENABLE)), yes)
-    TMK_COMMON_DEFS += -DISSI_ENABLE
-endif
-
-ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
-    TMK_COMMON_DEFS += -DWATCHDOG_ENABLE
-endif
+#ifeq ($(strip $(ISSI_ENABLE)), yes)
+#    TMK_COMMON_DEFS += -DISSI_ENABLE
+#endif
+#
+#ifeq ($(strip $(WATCHDOG_ENABLE)), yes)
+#    TMK_COMMON_DEFS += -DWATCHDOG_ENABLE
+#endif
 
 DEFAULT_FOLDER = meira/promicro
 LAYOUTS = ortho_4x12