Add support for LFKeyboard products: LFK78, LFK87 and SMK65

keyboards/lfkeyboards/lfk87/rules.mk

@@ -0,0 +1,31 @@
+# Set the LFK87 hardware version.
+#
+# A - Green PCB. at90usb1286 Only 3 exist
+# B - We don't talk about RevB
+# C-D - Black PCB. at90usb646 First public release
+#
+LFK_REV = C
+
+ifeq ($(LFK_REV), A)
+	MCU = at90usb1286
+	OPT_DEFS += -DBOOTLOADER_SIZE=8192
+else
+	MCU = at90usb646
+	OPT_DEFS += -DBOOTLOADER_SIZE=4096
+endif
+OPT_DEFS += -DLFK_TKL_REV_$(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