Add support for LFKeyboard products: LFK78, LFK87 and SMK65

keyboards/lfkeyboards/lfk78/rules.mk

@@ -0,0 +1,34 @@
+# Set the LFK78 hardware version.
+#
+# B   - first public release, uses atmega32u4, has audio, ISSI matrix split between RGB and backlight
+# C-H - at90usb1286, no audio, ISSI device 0 is backlight, 4 is RGB
+# J   - at90usb646, C6 audio, ISSI device 0 is backlight, 4 is RGB
+LFK_REV = J
+
+ifeq ($(LFK_REV), B)
+    MCU = atmega32u4
+    OPT_DEFS += -DBOOTLOADER_SIZE=4096
+else ifeq ($(LFK_REV), J)
+    MCU = at90usb646
+    OPT_DEFS += -DBOOTLOADER_SIZE=4096
+else
+    MCU = at90usb1286
+    OPT_DEFS += -DBOOTLOADER_SIZE=8192
+endif
+OPT_DEFS += -DLFK_REV_$(LFK_REV)
+OPT_DEFS += -DLFK_REV_STRING=\"Rev$(LFK_REV)\"
+
+# Extra source files for IS3731 lighting
+SRC = TWIlib.c issi.c lighting.c
+
+# Processor frequency.
+F_CPU = 16000000
+
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT