From 65a1e01aa62b01af2f9e311981991df9080c63fb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bruno=20Ryb=C3=A1rsky?= Date: Fri, 4 Apr 2025 04:46:26 +0200 Subject: [PATCH] Init --- .idea/.gitignore | 8 + .idea/.name | 1 + .idea/avrtest.iml | 2 + .idea/discord.xml | 7 + .idea/misc.xml | 8 + .idea/modules.xml | 8 + CMakeLists.txt | 144 ++++++++++++++ generic-gcc-avr.cmake | 423 ++++++++++++++++++++++++++++++++++++++++++ main.c | 10 + 9 files changed, 611 insertions(+) create mode 100644 .idea/.gitignore create mode 100644 .idea/.name create mode 100644 .idea/avrtest.iml create mode 100644 .idea/discord.xml create mode 100644 .idea/misc.xml create mode 100644 .idea/modules.xml create mode 100644 CMakeLists.txt create mode 100644 generic-gcc-avr.cmake create mode 100644 main.c diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..13566b8 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,8 @@ +# Default ignored files +/shelf/ +/workspace.xml +# Editor-based HTTP Client requests +/httpRequests/ +# Datasource local storage ignored files +/dataSources/ +/dataSources.local.xml diff --git a/.idea/.name b/.idea/.name new file mode 100644 index 0000000..bb3ff17 --- /dev/null +++ b/.idea/.name @@ -0,0 +1 @@ +avrtest \ No newline at end of file diff --git a/.idea/avrtest.iml b/.idea/avrtest.iml new file mode 100644 index 0000000..f08604b --- /dev/null +++ b/.idea/avrtest.iml @@ -0,0 +1,2 @@ + + \ No newline at end of file diff --git a/.idea/discord.xml b/.idea/discord.xml new file mode 100644 index 0000000..d8e9561 --- /dev/null +++ b/.idea/discord.xml @@ -0,0 +1,7 @@ + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..e479d63 --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,8 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/modules.xml b/.idea/modules.xml new file mode 100644 index 0000000..6a24f5b --- /dev/null +++ b/.idea/modules.xml @@ -0,0 +1,8 @@ + + + + + + + + \ No newline at end of file diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..4a976e7 --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,144 @@ +########################################################################## +# "THE ANY BEVERAGE-WARE LICENSE" (Revision 42 - based on beer-ware +# license): +# wrote this file. As long as you retain this notice +# you can do whatever you want with this stuff. If we meet some day, and +# you think this stuff is worth it, you can buy me a be(ve)er(age) in +# return. (I don't like beer much.) +# +# Matthias Kleemann +########################################################################## + +cmake_minimum_required(VERSION 3.5) + +### TOOLCHAIN SETUP AREA ################################################# +# Set any variables used in the toolchain prior project() call. In that +# case they are already set and used. +########################################################################## + +########################################################################## +# tools to beused for programming the AVR +########################################################################## +set(AVR_UPLOADTOOL avrdude) +set(AVR_PROGRAMMER usbasp-clone) +set(AVR_UPLOADTOOL_PORT usb) + +########################################################################## +# AVR and fuses needs to be set +########################################################################## +set(AVR_MCU atmega32) +set(AVR_H_FUSE 0x99) +set(AVR_L_FUSE 0xF1) +set(AVR_LOCK_FUSE 0xFF) + +### END TOOLCHAIN SETUP AREA ############################################# + +# Intentionally left blank, due to a different approach of using the +# toolchain file via -DCMAKE_TOOLCHAIN_FILE=path/to/generic-gcc-avr.cmake +# at the cmake command line call +# +include(generic-gcc-avr.cmake) + +########################################################################## +# name your project +########################################################################## +project(avrtest) + +########################################################################## +# status messages +########################################################################## +message(STATUS "Current uploadtool is: ${AVR_UPLOADTOOL}") +message(STATUS "Current programmer is: ${AVR_PROGRAMMER}") +message(STATUS "Current upload port is: ${AVR_UPLOADTOOL_PORT}") +message(STATUS "Current uploadtool options are: ${AVR_UPLOADTOOL_OPTIONS}") +message(STATUS "Current MCU is set to: ${AVR_MCU}") +message(STATUS "Current H_FUSE is set to: ${AVR_H_FUSE}") +message(STATUS "Current L_FUSE is set to: ${AVR_L_FUSE}") +message(STATUS "Current E_FUSE is set to: ${AVR_E_FUSE}") + +########################################################################## +# set build type +########################################################################## +if(NOT CMAKE_BUILD_TYPE) + set(CMAKE_BUILD_TYPE Release) +endif(NOT CMAKE_BUILD_TYPE) + +########################################################################## +# needs to be defined for AVR toolchain +########################################################################## +set(MCU_SPEED "8000000UL") + +########################################################################## +# some cmake cross-compile necessities +########################################################################## +if(DEFINED ENV{AVR_FIND_ROOT_PATH}) + set(CMAKE_FIND_ROOT_PATH $ENV{AVR_FIND_ROOT_PATH}) +else(DEFINED ENV{AVR_FIND_ROOT_PATH}) + if(EXISTS "/opt/local/avr") + set(CMAKE_FIND_ROOT_PATH "/opt/local/avr") + elseif(EXISTS "/usr/avr") + set(CMAKE_FIND_ROOT_PATH "/usr/avr") + elseif(EXISTS "/usr/lib/avr") + set(CMAKE_FIND_ROOT_PATH "/usr/lib/avr") + elseif(EXISTS "/usr/local/CrossPack-AVR") + set(CMAKE_FIND_ROOT_PATH "/usr/local/CrossPack-AVR") + else(EXISTS "/opt/local/avr") + message(FATAL_ERROR "Please set AVR_FIND_ROOT_PATH in your environment.") + endif(EXISTS "/opt/local/avr") +endif(DEFINED ENV{AVR_FIND_ROOT_PATH}) +set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) +set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) +set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) +# not added automatically, since CMAKE_SYSTEM_NAME is "generic" +set(CMAKE_SYSTEM_INCLUDE_PATH "${CMAKE_FIND_ROOT_PATH}/include") +set(CMAKE_SYSTEM_LIBRARY_PATH "${CMAKE_FIND_ROOT_PATH}/lib") + +########################################################################## +# status messages for generating +########################################################################## +message(STATUS "Set CMAKE_FIND_ROOT_PATH to ${CMAKE_FIND_ROOT_PATH}") +message(STATUS "Set CMAKE_SYSTEM_INCLUDE_PATH to ${CMAKE_SYSTEM_INCLUDE_PATH}") +message(STATUS "Set CMAKE_SYSTEM_LIBRARY_PATH to ${CMAKE_SYSTEM_LIBRARY_PATH}") + +########################################################################## +# set compiler options for build types +########################################################################## +if(CMAKE_BUILD_TYPE MATCHES Release) + set(CMAKE_C_FLAGS_RELEASE "-Os") + set(CMAKE_CXX_FLAGS_RELEASE "-Os") +endif(CMAKE_BUILD_TYPE MATCHES Release) + +if(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo) + set(CMAKE_C_FLAGS_RELWITHDEBINFO "-Os -save-temps -g -gdwarf-3 -gstrict-dwarf") + set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-Os -save-temps -g -gdwarf-3 -gstrict-dwarf") +endif(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo) + +if(CMAKE_BUILD_TYPE MATCHES Debug) + set(CMAKE_C_FLAGS_DEBUG "-O0 -save-temps -g -gdwarf-3 -gstrict-dwarf") + set(CMAKE_CXX_FLAGS_DEBUG "-O0 -save-temps -g -gdwarf-3 -gstrict-dwarf") +endif(CMAKE_BUILD_TYPE MATCHES Debug) + +########################################################################## +# compiler options for all build types +########################################################################## +add_definitions("-DF_CPU=${MCU_SPEED}") +add_definitions("-fpack-struct") +add_definitions("-fshort-enums") +add_definitions("-Wall") +add_definitions("-Werror") +add_definitions("-pedantic") +add_definitions("-pedantic-errors") +add_definitions("-funsigned-char") +add_definitions("-funsigned-bitfields") +add_definitions("-ffunction-sections") +add_definitions("-c") +add_definitions("-std=gnu99") +########################################################################## +# testing functions w/o source files - gets FATAL_ERROR +########################################################################## +# add_avr_library(mytestlib_breaks_generation) + +add_avr_executable( + avrtest + main.c +) \ No newline at end of file diff --git a/generic-gcc-avr.cmake b/generic-gcc-avr.cmake new file mode 100644 index 0000000..41ff783 --- /dev/null +++ b/generic-gcc-avr.cmake @@ -0,0 +1,423 @@ +########################################################################## +# "THE ANY BEVERAGE-WARE LICENSE" (Revision 42 - based on beer-ware +# license): +# wrote this file. As long as you retain this notice +# you can do whatever you want with this stuff. If we meet some day, and +# you think this stuff is worth it, you can buy me a be(ve)er(age) in +# return. (I don't like beer much.) +# +# Matthias Kleemann +########################################################################## + +########################################################################## +# The toolchain requires some variables set. +# +# AVR_MCU (default: atmega8) +# the type of AVR the application is built for +# AVR_L_FUSE (NO DEFAULT) +# the LOW fuse value for the MCU used +# AVR_H_FUSE (NO DEFAULT) +# the HIGH fuse value for the MCU used +# AVR_UPLOADTOOL (default: avrdude) +# the application used to upload to the MCU +# NOTE: The toolchain is currently quite specific about +# the commands used, so it needs tweaking. +# AVR_UPLOADTOOL_PORT (default: usb) +# the port used for the upload tool, e.g. usb +# AVR_PROGRAMMER (default: avrispmkII) +# the programmer hardware used, e.g. avrispmkII +########################################################################## + +########################################################################## +# options +########################################################################## +option(WITH_MCU "Add the mCU type to the target file name." ON) + +########################################################################## +# executables in use +########################################################################## +find_program(AVR_CC avr-gcc REQUIRED) +find_program(AVR_CXX avr-g++ REQUIRED) +find_program(AVR_OBJCOPY avr-objcopy REQUIRED) +find_program(AVR_SIZE_TOOL avr-size REQUIRED) +find_program(AVR_OBJDUMP avr-objdump REQUIRED) + +########################################################################## +# toolchain starts with defining mandatory variables +########################################################################## +set(CMAKE_SYSTEM_NAME Generic) +set(CMAKE_SYSTEM_PROCESSOR avr) +set(CMAKE_C_COMPILER ${AVR_CC}) +set(CMAKE_CXX_COMPILER ${AVR_CXX}) + +########################################################################## +# Identification +########################################################################## +set(AVR 1) + +########################################################################## +# some necessary tools and variables for AVR builds, which may not +# defined yet +# - AVR_UPLOADTOOL +# - AVR_UPLOADTOOL_PORT +# - AVR_PROGRAMMER +# - AVR_MCU +# - AVR_SIZE_ARGS +########################################################################## + +# default upload tool +if (NOT AVR_UPLOADTOOL) + set( + AVR_UPLOADTOOL avrdude + CACHE STRING "Set default upload tool: avrdude" + ) + find_program(AVR_UPLOADTOOL avrdude) +endif (NOT AVR_UPLOADTOOL) + +# default upload tool port +if (NOT AVR_UPLOADTOOL_PORT) + set( + AVR_UPLOADTOOL_PORT usb + CACHE STRING "Set default upload tool port: usb" + ) +endif (NOT AVR_UPLOADTOOL_PORT) + +# default programmer (hardware) +if (NOT AVR_PROGRAMMER) + set( + AVR_PROGRAMMER avrispmkII + CACHE STRING "Set default programmer hardware model: avrispmkII" + ) +endif (NOT AVR_PROGRAMMER) + +# default MCU (chip) +if (NOT AVR_MCU) + set( + AVR_MCU atmega8 + CACHE STRING "Set default MCU: atmega8 (see 'avr-gcc --target-help' for valid values)" + ) +endif (NOT AVR_MCU) + +#default avr-size args +if (NOT AVR_SIZE_ARGS) + if (APPLE) + set(AVR_SIZE_ARGS -B) + else (APPLE) + set(AVR_SIZE_ARGS -C;--mcu=${AVR_MCU}) + endif (APPLE) +endif (NOT AVR_SIZE_ARGS) + +# prepare base flags for upload tool +set(AVR_UPLOADTOOL_BASE_OPTIONS -p ${AVR_MCU} -c ${AVR_PROGRAMMER}) + +# use AVR_UPLOADTOOL_BAUDRATE as baudrate for upload tool (if defined) +if (AVR_UPLOADTOOL_BAUDRATE) + set(AVR_UPLOADTOOL_BASE_OPTIONS ${AVR_UPLOADTOOL_BASE_OPTIONS} -b ${AVR_UPLOADTOOL_BAUDRATE}) +endif () + +########################################################################## +# check build types: +# - Debug +# - Release +# - RelWithDebInfo +# +# Release is chosen, because of some optimized functions in the +# AVR toolchain, e.g. _delay_ms(). +########################################################################## +if (NOT ((CMAKE_BUILD_TYPE MATCHES Release) OR +(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo) OR +(CMAKE_BUILD_TYPE MATCHES Debug) OR +(CMAKE_BUILD_TYPE MATCHES MinSizeRel))) + set( + CMAKE_BUILD_TYPE Release + CACHE STRING "Choose cmake build type: Debug Release RelWithDebInfo MinSizeRel" + FORCE + ) +endif (NOT ((CMAKE_BUILD_TYPE MATCHES Release) OR +(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo) OR +(CMAKE_BUILD_TYPE MATCHES Debug) OR +(CMAKE_BUILD_TYPE MATCHES MinSizeRel))) + + +########################################################################## + +########################################################################## +# target file name add-on +########################################################################## +if (WITH_MCU) + set(MCU_TYPE_FOR_FILENAME "-${AVR_MCU}") +else (WITH_MCU) + set(MCU_TYPE_FOR_FILENAME "") +endif (WITH_MCU) + +########################################################################## +# add_avr_executable +# - IN_VAR: EXECUTABLE_NAME +# +# Creates targets and dependencies for AVR toolchain, building an +# executable. Calls add_executable with ELF file as target name, so +# any link dependencies need to be using that target, e.g. for +# target_link_libraries(-${AVR_MCU}.elf ...). +########################################################################## +function(add_avr_executable EXECUTABLE_NAME) + + if (NOT ARGN) + message(FATAL_ERROR "No source files given for ${EXECUTABLE_NAME}.") + endif (NOT ARGN) + + # set file names + set(elf_file ${EXECUTABLE_NAME}${MCU_TYPE_FOR_FILENAME}.elf) + set(hex_file ${EXECUTABLE_NAME}${MCU_TYPE_FOR_FILENAME}.hex) + set(lst_file ${EXECUTABLE_NAME}${MCU_TYPE_FOR_FILENAME}.lst) + set(map_file ${EXECUTABLE_NAME}${MCU_TYPE_FOR_FILENAME}.map) + set(eeprom_image ${EXECUTABLE_NAME}${MCU_TYPE_FOR_FILENAME}-eeprom.hex) + + set(${EXECUTABLE_NAME}_ELF_TARGET ${elf_file} PARENT_SCOPE) + set(${EXECUTABLE_NAME}_HEX_TARGET ${hex_file} PARENT_SCOPE) + set(${EXECUTABLE_NAME}_LST_TARGET ${lst_file} PARENT_SCOPE) + set(${EXECUTABLE_NAME}_MAP_TARGET ${map_file} PARENT_SCOPE) + set(${EXECUTABLE_NAME}_EEPROM_TARGET ${eeprom_file} PARENT_SCOPE) + # elf file + add_executable(${elf_file} EXCLUDE_FROM_ALL ${ARGN}) + + set_target_properties( + ${elf_file} + PROPERTIES + COMPILE_FLAGS "-mmcu=${AVR_MCU}" + LINK_FLAGS "-mmcu=${AVR_MCU} -Wl,--gc-sections -mrelax -Wl,-Map,${map_file}" + ) + + add_custom_command( + OUTPUT ${hex_file} + COMMAND + ${AVR_OBJCOPY} -j .text -j .data -O ihex ${elf_file} ${hex_file} + COMMAND + ${AVR_SIZE_TOOL} ${AVR_SIZE_ARGS} ${elf_file} + DEPENDS ${elf_file} + ) + + add_custom_command( + OUTPUT ${lst_file} + COMMAND + ${AVR_OBJDUMP} -d ${elf_file} > ${lst_file} + DEPENDS ${elf_file} + ) + + # eeprom + add_custom_command( + OUTPUT ${eeprom_image} + COMMAND + ${AVR_OBJCOPY} -j .eeprom --set-section-flags=.eeprom=alloc,load + --change-section-lma .eeprom=0 --no-change-warnings + -O ihex ${elf_file} ${eeprom_image} + DEPENDS ${elf_file} + ) + + add_custom_target( + ${EXECUTABLE_NAME} + ALL + DEPENDS ${hex_file} ${lst_file} ${eeprom_image} + ) + + set_target_properties( + ${EXECUTABLE_NAME} + PROPERTIES + OUTPUT_NAME "${elf_file}" + ) + + # clean + get_directory_property(clean_files ADDITIONAL_MAKE_CLEAN_FILES) + set_directory_properties( + PROPERTIES + ADDITIONAL_MAKE_CLEAN_FILES "${map_file}" + ) + + # upload - with avrdude + add_custom_target( + upload_${EXECUTABLE_NAME} + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} ${AVR_UPLOADTOOL_OPTIONS} + -U flash:w:${hex_file} + -P ${AVR_UPLOADTOOL_PORT} + DEPENDS ${hex_file} + COMMENT "Uploading ${hex_file} to ${AVR_MCU} using ${AVR_PROGRAMMER}" + ) + + # upload eeprom only - with avrdude + # see also bug http://savannah.nongnu.org/bugs/?40142 + add_custom_target( + upload_${EXECUTABLE_NAME}_eeprom + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} ${AVR_UPLOADTOOL_OPTIONS} + -U eeprom:w:${eeprom_image} + -P ${AVR_UPLOADTOOL_PORT} + DEPENDS ${eeprom_image} + COMMENT "Uploading ${eeprom_image} to ${AVR_MCU} using ${AVR_PROGRAMMER}" + ) + + # disassemble + add_custom_target( + disassemble_${EXECUTABLE_NAME} + ${AVR_OBJDUMP} -h -S ${elf_file} > ${EXECUTABLE_NAME}.lst + DEPENDS ${elf_file} + ) +endfunction(add_avr_executable) + + +########################################################################## +# add_avr_library +# - IN_VAR: LIBRARY_NAME +# +# Calls add_library with an optionally concatenated name +# ${MCU_TYPE_FOR_FILENAME}. +# This needs to be used for linking against the library, e.g. calling +# target_link_libraries(...). +########################################################################## +function(add_avr_library LIBRARY_NAME) + if (NOT ARGN) + message(FATAL_ERROR "No source files given for ${LIBRARY_NAME}.") + endif (NOT ARGN) + + set(lib_file ${LIBRARY_NAME}${MCU_TYPE_FOR_FILENAME}) + set(${LIBRARY_NAME}_LIB_TARGET ${elf_file} PARENT_SCOPE) + + add_library(${lib_file} STATIC ${ARGN}) + + set_target_properties( + ${lib_file} + PROPERTIES + COMPILE_FLAGS "-mmcu=${AVR_MCU}" + OUTPUT_NAME "${lib_file}" + ) + + if (NOT TARGET ${LIBRARY_NAME}) + add_custom_target( + ${LIBRARY_NAME} + ALL + DEPENDS ${lib_file} + ) + + set_target_properties( + ${LIBRARY_NAME} + PROPERTIES + OUTPUT_NAME "${lib_file}" + ) + endif (NOT TARGET ${LIBRARY_NAME}) + +endfunction(add_avr_library) + +########################################################################## +# avr_target_link_libraries +# - IN_VAR: EXECUTABLE_TARGET +# - ARGN : targets and files to link to +# +# Calls target_link_libraries with AVR target names (concatenation, +# extensions and so on. +########################################################################## +function(avr_target_link_libraries EXECUTABLE_TARGET) + if (NOT ARGN) + message(FATAL_ERROR "Nothing to link to ${EXECUTABLE_TARGET}.") + endif (NOT ARGN) + + get_target_property(TARGET_LIST ${EXECUTABLE_TARGET} OUTPUT_NAME) + + foreach (TGT ${ARGN}) + if (TARGET ${TGT}) + get_target_property(ARG_NAME ${TGT} OUTPUT_NAME) + list(APPEND NON_TARGET_LIST ${ARG_NAME}) + else (TARGET ${TGT}) + list(APPEND NON_TARGET_LIST ${TGT}) + endif (TARGET ${TGT}) + endforeach (TGT ${ARGN}) + + target_link_libraries(${TARGET_LIST} ${NON_TARGET_LIST}) +endfunction(avr_target_link_libraries EXECUTABLE_TARGET) + +########################################################################## +# avr_target_include_directories +# +# Calls target_include_directories with AVR target names +########################################################################## + +function(avr_target_include_directories EXECUTABLE_TARGET) + if (NOT ARGN) + message(FATAL_ERROR "No include directories to add to ${EXECUTABLE_TARGET}.") + endif () + + get_target_property(TARGET_LIST ${EXECUTABLE_TARGET} OUTPUT_NAME) + set(extra_args ${ARGN}) + + target_include_directories(${TARGET_LIST} ${extra_args}) +endfunction() + +########################################################################## +# avr_target_compile_definitions +# +# Calls target_compile_definitions with AVR target names +########################################################################## + +function(avr_target_compile_definitions EXECUTABLE_TARGET) + if (NOT ARGN) + message(FATAL_ERROR "No compile definitions to add to ${EXECUTABLE_TARGET}.") + endif () + + get_target_property(TARGET_LIST ${EXECUTABLE_TARGET} OUTPUT_NAME) + set(extra_args ${ARGN}) + + target_compile_definitions(${TARGET_LIST} ${extra_args}) +endfunction() + +function(avr_generate_fixed_targets) + # get status + add_custom_target( + get_status + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} -n -v + COMMENT "Get status from ${AVR_MCU}" + ) + + # get fuses + add_custom_target( + get_fuses + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} -n + -U lfuse:r:-:b + -U hfuse:r:-:b + -U lock:r:-:b + COMMENT "Get fuses from ${AVR_MCU}" + ) + + # set fuses + add_custom_target( + set_fuses + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} + -U lfuse:w:${AVR_L_FUSE}:m + -U hfuse:w:${AVR_H_FUSE}:m + -U lock:w:${AVR_LOCK_FUSE}:m + COMMENT "Setup: High Fuse: ${AVR_H_FUSE} Low Fuse: ${AVR_L_FUSE}" + ) + + # get oscillator calibration + add_custom_target( + get_calibration + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} + -U calibration:r:${AVR_MCU}_calib.tmp:r + COMMENT "Write calibration status of internal oscillator to ${AVR_MCU}_calib.tmp." + ) + + # set oscillator calibration + add_custom_target( + set_calibration + ${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} + -U calibration:w:${AVR_MCU}_calib.hex + COMMENT "Program calibration status of internal oscillator from ${AVR_MCU}_calib.hex." + ) +endfunction() + +########################################################################## +# Bypass the link step in CMake's "compiler sanity test" check +# +# CMake throws in a try_compile() target test in some generators, but does +# not know that this is a cross compiler so the executable can't link. +# Change the target type: +# +# https://stackoverflow.com/q/53633705 +########################################################################## + +set(CMAKE_TRY_COMPILE_TARGET_TYPE "STATIC_LIBRARY") diff --git a/main.c b/main.c new file mode 100644 index 0000000..db12065 --- /dev/null +++ b/main.c @@ -0,0 +1,10 @@ +#include +#include + +int main(void) { + DDRA = (1 << 7); + while(1) { + PORTA ^= (1 << 7); + _delay_ms(1000); + } +}