cmake_minimum_required(VERSION 2.8.3)


SET(BOARD "atmega328p" CACHE STRING "AVR CPU to build for")
SET(CLOCK "16000000" CACHE STRING "CPU clock")

SET(FLASH_FLAGS "-patmega328p" "-carduino" "-P/dev/ttyUSB0" "-b57600" CACHE STRING "avrdude flags")


find_program(AVR_GCC avr-gcc)
find_program(AVRDUDE avrdude)

SET(CMAKE_SYSTEM_NAME Generic)


SET(CMAKE_C_COMPILER ${AVR_GCC})

project(ARDKBD C)

set(CMAKE_MODULE_PATH ${ARDKDB_SOURCE_DIR})


add_executable(kbd.elf
  kbd.c
)
set_target_properties(kbd.elf PROPERTIES
  COMPILE_FLAGS "-Wall -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -mmcu=${BOARD}"
  LINK_FLAGS "-Wall -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -mmcu=${BOARD}"
  COMPILE_DEFINITIONS "F_CPU=${CLOCK}"
)

add_custom_command(OUTPUT kbd.hex COMMAND ${CMAKE_OBJCOPY} -O ihex -R .eeprom kbd.elf kbd.hex DEPENDS kbd.elf)
add_custom_target(kbd ALL DEPENDS kbd.hex)

add_custom_target(flash COMMAND ${AVRDUDE} ${FLASH_FLAGS} -D -Uflash:w:kbd.hex:i DEPENDS kbd)