CMAKE_MINIMUM_REQUIRED(VERSION 2.8.4)
SET(CMAKE_SYSTEM_NAME Generic)

#============================================================================================
PROJECT(BlinkExample NONE)              # <-- Prjektname

SET(FILES main.c)           # <-- Quelldatei(en)

SET(DEVICE atmega328p)          # <-- MCU
SET(FREQ 16000000)          # <-- MCU-Frequenz

set(AVR_H_FUSE 0xDB)

SET(AVRBIN /usr/bin)        # <-- Toolchain
SET(AVROBJCOPY avr-objcopy)     # <--     ""
SET(AVRSIZE avr-size)           # <--     ""
SET(AVRDUDE avrdude)            # <--     ""

SET(PROGRAMMER usbasp)      # <-- Programmertype
SET(PORT usb)                   # <-- USB bzw. Schnittstelle z.B. /dev/cu.usbserial....
# SET(BAUD 57600)               # <-- Übertragungsrate

SET(EEPROM NO)                      # <-- soll eine x.eep Datei erstellt werden?
SET(FLASH YES)                  # <-- soll Geflasht werden?

#============================================================================================

SET(CMAKE_C_COMPILER ${AVRBIN}/avr-gcc)
SET(CMAKE_CXX_COMPILER ${AVRBIN}/avr-g++)

SET(CMAKE_C_FLAGS  "-Os -mmcu=${DEVICE} -DF_CPU=${FREQ}UL -std=gnu99 -Wl,--gc-sections")
SET(CMAKE_CXX_FLAGS "-Os -mmcu=${DEVICE} -DF_CPU=${FREQ}UL -Wl,--gc-sections")

set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/bin")
set(CMAKE_PREFIX_PATH /opt/local/avr)
set(CMAKE_EXECUTABLE_SUFFIX ".elf")

include_directories( /opt/local/avr/include)

SET(SOURCE_FILES ${FILES})

#============================================================================================

ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} main.c)

ADD_CUSTOM_COMMAND(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD COMMAND ${AVRBIN}/${AVROBJCOPY} -O ihex -R .eeprom ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${CMAKE_PROJECT_NAME}.elf ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${CMAKE_PROJECT_NAME}.hex)

if(EEPROM)
    ADD_CUSTOM_COMMAND(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD COMMAND ${AVRBIN}/${AVROBJCOPY} -O ihex -j .eeprom --set-section-flags=.eeprom="alloc,load"  --change-section-lma .eeprom=0 ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${CMAKE_PROJECT_NAME}.elf ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${CMAKE_PROJECT_NAME}.eep)
endif(EEPROM)

ADD_CUSTOM_COMMAND(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD COMMAND ${AVRBIN}/${AVRSIZE} --target=ihex ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${CMAKE_PROJECT_NAME}.hex)

if(FLASH)
    ADD_CUSTOM_COMMAND(TARGET ${CMAKE_PROJECT_NAME} POST_BUILD COMMAND ${AVRBIN}/${AVRDUDE} -p${DEVICE} -c${PROGRAMMER} -P${PORT} -b${BAUD} -U flash:w:${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/${CMAKE_PROJECT_NAME}.hex)
endif(FLASH)